Navigation

RADIO
NAVIGATIONAL AIDS
PUB. 117
2005
IMPORTANT
THIS PUBLICATION SHOULD
BE CORRECTED EACH WEEK
FROM THE
NOTICE TO MARINERS
Prepared and published by the
NATIONAL GEOSPATIAL-INTELLIGENCE AGENCY
Bethesda, Maryland
© COPYRIGHT 2005 BY THE UNITED STATES GOVERNMENT

NO COPYRIGHT CLAIMED UNDER TITLE 17 U.S.C.
THE PRUDENT MARINER
a. Warning On Use Of Floating Aids To Navigation and on Aids to Navigation in General, to Fix a Navigational
Position.
The aids to navigation depicted on charts comprise a system consisting of fixed and floating aids with varying degrees of
reliability. Therefore, prudent mariners will not rely solely on any single aid to navigation, particularly a floating aid. An
aid to navigation also refers to any device or structure external to a craft, designed to assist in determination of position.
This includes celestial, terrestrial, and electronic means, such as Global Positioning System (GPS) and Differential GPS
(DGPS). Here, too, the prudent mariner will not rely soley on any single aid to navigation.
The buoy symbol is used to indicate the approximate position of the buoy body and the sinker which secures the buoy to
the seabed. The approximate position is used because of practical limitations in positioning and maintaining buoys and
their sinkers in precise geographical locations. These limitations include, but are not limited to, inherent imprecisions in
position fixing methods, prevailing atmospheric and sea conditions, the slope of and the material making up the seabed, the
fact that buoys are moored to sinkers by varying lengths of chain, and the fact that buoy and/or sinker positions are not
under continuous surveillance but are normally checked only during periodic maintenance visits which often occur more
than a year apart. The position of the buoy body can be expected to shift inside and outside the charting symbol due to the
forces of nature. The mariner is also cautioned that buoys are liable to be carried away, shifted, capsized, sunk, etc. Lighted
buoys may be extinguished or sound signals may not function as the result of ice or other natural causes, collisions, or other
accidents. Many of these factors also apply to articulated lights.
For the foregoing reasons, a prudent mariner must not rely completely upon the position or operation of floating aids to
navigation, but will also utilize bearings from fixed objects and aids to navigation on shore. Further, a vessel attempting to
pass close aboard always risks collision with a yawing buoy or with the obstruction the buoy marks.
b. Use of Foreign Charts.

1. In the interest of safe navigation, caution should be exercised in the use of foreign charts not maintained through U.S.
Notice to Mariners.
2. Foreign produced charts are occasionally mentioned in NGA Sailing Directions when such charts may be of a better
scale than U.S. produced charts. Mariners are advised that if or when such foreign charts are used for navigation it is their
responsibility to maintain those charts from the Notice to Mariners of the foreign country producing the charts.
3. The mariner is warned that the buoyage systems, shapes, colors, and light rhythms used by other countries often have
a different significance than the U.S. system.
4. Mariners are further warned about plotting positions, especially satellite-derived positions such as from GPS, onto
foreign charts where the datum is unknown or the conversion from WGS-84 is unknown.
c. Chart Notes Regarding Different Datums.

Particular caution should be exercised during a passage when transferring the navigational plot to an adjacent chart upon
a different geodetic datum or when transferring positions from one chart to another chart of the same area which is based
upon a different datum. The transfer of positions should be done by bearings and distances from common features.
Notes on charts should be read with care, as they give important information not graphically presented. Notes in
connection with the chart title include the horizontal geodetic datum which serves as a reference for the values of the
latitude and longitude of any point or object on the chart. The latitudes and longitudes of the same points or objects on a
second chart of the same area which is based upon a different datum will differ from those of the first chart. The difference
may be navigationally significant. Additionally, datum changes between chart editions could significantly affect the
positions of navigational aids found in the List of Lights and other NGA publications.
Positions obtained from satellite navigation systems, such as from GPS, are normally referred to the World Geodetic
System 1984 (WGS-84) Datum. The differences between GPS satellite-derived positions and positions on some foreign
charts cannot be determined: mariners are warned that these differences MAY BE SIGNIFICANT TO NAVIGATION and
are therefore advised to use alternative sources of positional information, particularly when closing the shore or navigating
in the vicinity of dangers.
(NGA/MISC)
PREFACE
The 2005 edition of Pub. 117, Radio Navigational Aids, is a (1) In kilohertz (kHz) up to and including 300 kHz.
list of selected worldwide stations which provide electronic (2) In megahertz (MHz) up to and including 300 MHz.
services to the mariner. This edition cancels all previous (3) In gigahertz (GHz) up to and including 300 GHz.
editions of Pub. 117. The listing is divided into chapters Note: In practice, kilohertz may be used up to 30,000 kHz.
according to the nature of the service performed by the Nothing in the manner of presentation or arrangement of
stations. The first numeral (hundreds digit) of section numbers information in this publication implies endorsement or
of text and the first numeral (thousands digit) of station acceptance by NGA in matters affecting the status and
numbers correspond to the chapter number. boundaries of states and territories.
Radiobeacons, the only category of radio navigational aids not This edition contains information available to the National
listed in this book, are grouped geographically and carried in the Geospatial-Intelligence Agency up to 27 November 2004,
NGA Lists of Lights, Pub. 110 - 116, and USCG Light Lists. including Notice to Mariners No. 48 of 2004. Corrections
References to publications produced or sold by NGA will be which have accumulated since that date will be in Section II of
followed by the stock number in parentheses. the Notice to Mariners which announces the issuance of this
Times quoted herein are, unless otherwise stated, in publication. Subsequent corrections are included weekly in
Coordinated Universal Time (UTC) and hours are reckoned Section II. All of these corrections should be applied in the
from 0000 to 2359. appropriate places and their insertion noted in the “Record of
All bearings are true and are measured in degrees Corrections” on the next page.
clockwise from 000˚ (true north) to 359˚. The sectors of radio Mariners and other users are requested to forward new or
direction finder stations are given as looking from the station corrective information useful in the correction of this
to seaward in accordance with international practice; it publication to:
should be noted that this is the reverse of the method used in
the light lists for expressing the sectors of lights. MARITIME DIVISION
Distances are reckoned in nautical miles unless otherwise ST D 44
stated. NATIONAL GEOSPATIAL-INTELLIGENCE AGENCY
When the term “plain language” is used in the description of 4600 SANGAMORE ROAD
the services rendered by a station, it signifies that the service is BETHESDA MD 20816-5003
in the language of the country controlling the station, unless
stated to be otherwise. CAUTION
The hertz is the unit for the operating frequencies of Plans for air defense of the United States may require
communications-electronics equipment. Frequencies will temporary suspension of the operations of certain electronic
normally be expressed as follows: aids to navigation with little or no advance notice.
I
CONTENTS
Preface ...........................................................................................................................................................................................I
Table of Symbols .......................................................................................................................................................................VI
CHAPTER 1
Radio Direction Finder and Radar Stations ...............................................................................................................................1-3
CHAPTER 2
Radio Time Signals....................................................................................................................................................................2-3
CHAPTER 3
Radio Navigational Warnings....................................................................................................................................................3-3
CHAPTER 4
Distress, Emergency, and Safety Traffic ...................................................................................................................................4-3
CHAPTER 5
Stations Transmitting Medical Advice ......................................................................................................................................5-3
CHAPTER 6
Long Range Navigational Aids..................................................................................................................................................6-3
CHAPTER 7
Amver.........................................................................................................................................................................................7-3
CHAPTER 8
Communication Instructions For U.S. Merchant Ships ............................................................................................................8-3
Index I—Radio Aids to Navigation by Country ........................................................................................................................ I-1

Index II—Radio Aids to Navigation by Station......................................................................................................................... I-5
Index III—Cross Reference—International vs. U.S. Radio Aids ............................................................................................ I-13
III
QUICK REFERENCE
Amver.................................................................................................................................................................................. 7-3
DISTRESS, SEARCH, AND RESCUE

Assistance by SAR Aircraft and Helicopters................................................................................................................... 4-14
Distress and Safety Communications Procedures ........................................................................................................... 4-7
Emergency Position Indicating Radiobeacons (EPIRBs) ................................................................................................ 4-18
Frequencies for Distress and Safety ................................................................................................................................ 4-3
Global Maritime Distress and Safety System (GMDSS) ................................................................................................ 4-28
Urgency and Safety Communications Procedures........................................................................................................... 4-11
ELECTRONIC NAVIGATION
LORAN-C........................................................................................................................................................................ 6-3
Satellite Navigation.......................................................................................................................................................... 6-10
EMERGENCY
U.S. Naval Cooperation and Guidance for Shipping (NCAGS)...................................................................................... 8-3
Contamination Prediction System for Merchant Ships at Sea and the MERWARN System .......................................... 8-9
Reports of Hostile Activities............................................................................................................................................ 4-15
Requests for U.S. Navy Assistance in Emergency Situations ......................................................................................... 4-94
NAVIGATIONAL WARNINGS
Coastal and Local, Long Range, and Worldwide Warnings ............................................................................................ 3-3
Ice Information ................................................................................................................................................................ 3-16
NAVTEX.......................................................................................................................................................................... 3-6
Reporting Navigational Safety Information to Shore Establishments............................................................................. 4-14
SPECIAL WARNINGS and Broadcast Stations ............................................................................................................. 3-6
The National Geospatial-Intelligence Agency’s Maritime Safety Information Website..................................................... V
IV
THE NATIONAL GEOSPATIAL-INTELLIGENCE AGENCY
MARITIME DIVISION WEBSITE
The National Geospatial-Intelligence Agency (NGA) Maritime Division Website provides worldwide remote
query access to extensive menus of maritime safety information 24 hours a day.
Databases made available for access, query and download include Chart Corrections, Publication Corrections, NGA
Hydrographic Catalog Corrections, Chart and Publication Reference Data (current edition number, dates, title, scale),
NGA List of Lights, USCG Light Lists, WorldWide Navigational Warning Service (WWNWS) Broadcast Warnings,
Maritime Administration (MARAD) Advisories, Department of State Special Warnings, Mobile Offshore Drilling Units
(MODUs), Anti-Shipping Activity Messages (ASAMs), World Port Index, and Radio Navigational Aids. Publications that
are also made available as PDF files include the U.S. Notice to Mariners, U.S. Chart No. 1, The American Practical
Navigator (Bowditch), International Code of Signals, Radio Navigational Aids, World Port Index, Distances Between
Ports, Sight Reduction Tables for Marine and Air Navigation, and the Radar Navigation and Maneuvering Board Manual.
The Maritime Division Website can be accessed via the NGA Homepage (http://www.nga.mil) or directly at
http://pollux.nss.nga.mil/. Any questions concerning the Maritime Division Website should be directed to:
MARITIME DIVISION
ATTN: NSS STAFF
ST D-44
NATIONAL GEOSPATIAL-INTELLIGENCE AGENCY
4600 SANGAMORE ROAD
BETHESDA MD 20816-5003
Telephone: (1) 301-227-3296 or DSN 287-3296

Fax: (1) 301-227-4211
E-mail: webmaster_nss@nga.mil
V
TABLE OF SYMBOLS
LEGEND
Example: A 1 A
(1) (2) (3)
(1) Type of modulation of the main carrier:

A Double sideband
F Frequency modulation
G Phase modulation
H Single sideband (full carrier)
J Single sideband (suppressed carrier)
N Emission of unmodulated carrier
R Single sideband (reduced or variable level carrier)
(2) Nature of signal(s) modulating the main carrier:
0 No modulating signal
1 Single channel containing quantized/digital information without modulating subcarrier, excluding time division
multiplex
2 Single channel containing quantized/digital information with modulating subcarrier, excluding time division
multiplex
3 Single channel containing analog information
9 Multiple channels, separately containing quantized/digital information and analog information
(3) Type of information to be transmitted. “Information” does not include information of a constant, unvarying nature, such as
provided by standard frequency emissions, continuous wave and pulse radars, etc.:
A Telegraphy (aural reception)
B Telegraphy (automatic reception)
C Facsimile
D Data transmission, telemetry, telecommand
Note: With 6 kHz, EDW operation in the bands below 30 MHz allocated exclusively for maritime mobile service
(FC, MO)
E Telephony (including sound broadcasting)
N No information transmitted
W Telegraphy and telephony
AMPLITUDE MODULATION
A1A Continuous wave telegraphy, Morse code

A2A Telegraphy by on/off keying of tone-modulated carrier, Morse code: double sideband
A3E Radiotelephony using amplitude modulation: double sideband
A3C Facsimile
A9W Composite emission of telegraphy and telephony: double sideband
G1D Data transmission
G3E Radiotelephony
H2A Telegraphy by on/off keying of tone-modulated carrier
H2B Selective calling using sequential single frequency code
H3E Radiotelephony: single sideband, full carrier
J3C Facsimile: single sideband, suppressed carrier
J3E Radiotelephony using amplitude modulation: single sideband, suppressed carrier
N0N Unmodulated continuous wave emission
R3E Radiotelephony
VI
FREQUENCY (or PHASE) MODULATION:
F1B Narrow band direct printing (NBDP); Radioteletype

F2A Telegraphy by on/off keying of tone-modulated carrier
F3C Facsimile
F3E Radiotelephony using frequency modulation
Pulse Modulation:
kHz = kilohertz
MHz = megahertz
GHz = gigahertz
TERMS AND ABBREVIATIONS
AOR-E Atlantic Ocean Region-East

AOR-W Atlantic Ocean Region-West
CES Coast Earth Station
DSC Digital Selective Calling
EPIRB Emergency position-indicating radio beacon
GEOLUT Local user terminal in a GEOSAR system
GEOSAR Geostationary satellite system for SAR
HF High Frequency
IOR Indian Ocean Region
LEOLUT Local user terminal in a LEOSAR system
LEOSAR Low Earth Orbit satellite system for SAR
LUT COSPAS-SARSAT Local User Terminal
MCC COSPAS-SARSAT Mission Control Center
MF Medium Frequency
MRCC Maritime Rescue Co-ordination Center
MRSC Maritime Rescue Sub-Center
NBDP Narrow band direct printing
NCS Network Coordinating Station
N.I. No Information
NM Nautical Miles
POR Pacific Ocean Region
RCC Rescue Coordination Center
Rx Receiver
SAR Search and rescue
Tx Transmitter
UTC Coordinated Universal Time
VII
CHAPTER 1
RADIO DIRECTION FINDER AND RADAR STATIONS
PART I RADIO DIRECTION FINDER STATIONS
100A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

100B. Accuracy of Bearings Furnished by Direction Finding Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
100C. Obligations of Administrations Operating Direction Finding Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
100D. Procedure to Obtain Radio Direction Finder Bearings and Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
100E. Plotting Radio Bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
100F. Radio Bearing Conversion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
100G. Direction Finding Station List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Station List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
PART II RADAR STATIONS
110A. Coast and Port Radar Station List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Station List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
1-1
CHAPTER 1
PART I RADIO DIRECTION FINDER STATIONS
100A. General SUNRISE, SUNSET, OR NIGHT EFFECTS: Bearings

obtained from about half an hour before sunset to about
Radio bearings may be employed for fixing a ship’s half an hour after sunrise are occasionally unreliable
position in the same manner as other lines of position if because of the polarization error introduced. Changes in
due regard is given to the facts that they, like other lines of the intensity of the signals received occur at sunset and
position, may not be absolutely accurate, and that the sunrise.
bearings are portions of great circles, not rhumb lines. CAUTION: When RDF stations use such words as
doubtful, approximate, second-class, or the equivalents in
Radio bearings are obtained using radio direction finder foreign languages, the bearings reported must be treated
sets installed on either shore stations or ships, and also by with suspicion as considerable error may exist.
certain special radiobeacons. DANGER FROM RECIPROCAL BEARINGS: When a
Radio direction finder (RDF)stations are equipped with single station furnishes a bearing, there is a possibility of
apparatus for determining the direction of radio signals an error of approximately 180˚, as the operator at the
transmitted by ships and other stations. station cannot always determine on which side of the
station the ship lies. Certain direction finder stations,
SECTOR OF CALIBRATION: The sector of calibration particularly those on islands or extended capes, are
of a direction finder station is the sector around the equipped to furnish two corrected true bearings for any
receiving coil in which the deviation of radio bearings is observation. Such bearings may differ by approximately
known. In this book, the sectors are measured clockwise 180˚ and whichever bearing is suitable should be used.
from 000˚ (true north) to 359˚ and are given from the
station to seaward. Bearings which do not fall within the CAUTION: Mariners receiving bearings which are
sector of calibration of the station should be considered evidently the approximate reciprocal of the correct
unreliable. bearings should never attempt to correct these bearings by
applying a correction of 180˚, as such a correction would
100B. Accuracy of Bearings Furnished by not include the proper correction for deviation at the
Direction Finding Stations direction finder station. An error as large as 30˚ may be
introduced by an arbitrary correction of 180˚. Ships
The bearings obtained by RDF stations and reported to receiving bearings requiring an approximate 180˚
ships are corrected for all determinable errors except the correction should request both bearings from the direction
difference between a great circle and a rhumb line (See sec. finder station.
100F.) and are normally accurate within 2˚ for distances
under 150 miles. However, this error may be increased by 100C. Obligations of Administrations Operating
various circumstances, some of which are: Direction Finding Stations
STRENGTH OF SIGNALS: The most accurate bearings The obligations of RDF station operators are given in
result from ships whose signals are steady, clear, and Article 35 of the manual for use by the Maritime Mobile
strong. If the signals are too weak, accurate bearings Satellite Services of the International Telecommunications
cannot be obtained. Union (1992). They include the following:
TRANSMITTER ADJUSTMENT: The transmitter of
the ship requesting bearings should be tuned carefully to – Effective and regular service should be maintained, but
the frequency of the station. If the tuning is off, it will be no responsibility is accepted for these services.
difficult for the station to obtain bearings sufficiently – Serviced stations shall be advised of doubtful or
accurate for navigational purposes. unreliable observations.
– RDF station operators shall make daily notification of
COASTAL REFRACTION (LAND EFFECT): Bearings any temporary modifications or irregularities in service.
which cut an intervening coastline at an oblique angle, or Permanent modifications shall be published as soon as
cross high intervening land, may produce errors of 4˚ to 5˚. possible in the relevant notices to mariners.
RDF stations normally know the sectors in which such – All RDF stations shall be able to take bearings on 410
refraction may be expected. Such sectors may not be kHz and 500 kHz.
included in the published sectors of calibration or may be – When RDF service is provided in authorized bands
marked “sectors of uncertain calibration.” between 1605 kHz and 2850 kHz, RDF stations
1-3
providing that service should be able to take bearings on – If the RDF station is mobile, its own position preceded
2182 kHz. by QTH.
– When RDF service is provided in the bands between 156
MHz and 174 MHz, the RDF station should be able to When the vessel has received this information, it should
take bearings on VHF 156.8 MHz and VHF digital repeat it back, if considered necessary for confirmation.
selective calling frequency 156.525 MHz. The RDF station should confirm or correct the information.
When the RDF station is sure the information has been
100D. Procedure to Obtain Radio Direction correctly received, it will transmit AR (end of
Finder Bearings and Positions transmission). The vessel will respond with AR.
TO OBTAIN A BEARING: The vessel should call the Unless otherwise indicated, the vessel may assume that
RDF station or the RDF control station on the designated the sense of the bearing was indicated. If not, the RDF
watch frequency. Depending on the type of information station should indicate this or report the bearing and its
wanted, the vessel should transmit the appropriate service reciprocal.
abbreviation(s):
CLASSSIFICATION OF BEARINGS: To estimate the
– QTE: What is the true bearing from you (or designated accuracy and determine the corresponding class of a
vessel)? bearing:
– QTH: Follows the above abbreviation when the request
is made to a mobile RDF station. – An operator should generally, and particularly in the
maritime mobile RDF service on frequencies below 3000
The vessel should also indicate the frequency it will use kHz, give the observational characteristics of bearings
to enable its bearing to be taken. shown in the table below.
– The RDF station, when facilities and time permit, may
The RDF station called should request the vessel to take into account the probability of error in the bearing.
transmit for the bearing by means of the service A bearing is considered as belonging to a particular class
abbreviation QTG (Will you send two dashes of ten if there is a probability of less than 1 in 20 that the
seconds each (or carrier) followed by your call sign bearing error would exceed the numerical values
(repeated __ times) on ___ kHz (or MHz)?). specified for that class in the table below. This
probability should be determined from an analysis of the
After shifting, if necessary, to the new transmitting five components that make up the total variance of the
frequency, the vessel should transmit as instructed by the bearing (instrumental, site, propagation, random
RDF station. sampling and observational components).
The RDF station should determine the direction, sense TO OBTAIN A POSITION (DETERMINED BY TWO
(if possible), and classification of the bearing and transmit OR MORE RDF STATIONS ORGANIZED AS A
to the vessel in the following order: GROUP): The vessel should call the RDF control station
and transmit QTF (Will you give me my position according
– QTE. to the bearings taken by the RDF stations you control?).
– Three digits indicating true bearing in degrees from the
RDF station. The control station shall reply and, when the RDF
– Class of bearing. stations are ready, request that the vessel transmit using the
– Time of observation. service abbreviation QTG.
Classification of Bearings
Class Bearing Error
(Degrees) Observational Characteristics
Signal Bearing Fading Interference Bearing Swing Duration of
Strength Indication (Degrees) Observation
A ±2˚ very good definite negligible negligible less than 3˚ adequate
or good (sharp null)
B ±5˚ fairly good blurred slight slight more than 3˚ short
less than 5˚
C ±10˚ weak severely severe strong more than 5˚ very short
blurred less than 10˚
D more than scarcely ill-defined very severe very strong more than 10˚ inadequate
±10˚ perceptible
1-4
When the position has been determined, the control plotted from the geographical position of the receiving
station should transmit to the vessel: antenna of the station. Bearings taken by a ship on a shore
– QTF. station must be plotted from the geographical position of
– The position in latitude and longitude, or in relation to a the station’s transmitting antenna.
known geographic point. CAUTION: These two positions are not the same for all
– Class of position. stations.
– Time of observation. SHIP’S PROBABLE POSITION: As radio bearings are
According to its estimate of the accuracy of the not absolutely accurate, lines should be drawn on both
observations, the control station shall classify the position sides of each radio bearing at an angular distance from the
in one of the four following classes: bearing equal to the estimated probable error. In the case of
– Class A - positions which the operator may reasonably intersecting radio bearings, the ship’s most probable
expect to be accurate to within 5 nautical miles. position is the area enclosed by these outer lines.
– Class B - positions which the operator may reasonably In figure 1 the broken lines are radio bearings obtained
expect to be accurate to within 20 nautical miles. on a ship by three radio stations. The solid lines are drawn
– Class C - positions which the operator may reasonably at angles of 2˚ from the bearings (it is assumed that all the
expect to be accurate to within 50 nautical miles. bearings are probably accurate within 2˚). The black
– Class D - positions which the operator may not expect to triangle in the illustration lies within the 2˚ error of all
be accurate to within 50 nautical miles. three bearings and is the most probable position of the
For frequencies above 3000 kHz, where the distance ship. However, with the possibility that one of the bearings
limits specified in the preceding subparagraph may not be may be off by more than 2˚, the areas shaded with parallel
appropriate, the control station may classify the position in lines give other possible positions. If one of the bearings is
accordance with current International Telecommunications suspected to be less accurate, the outer lines should be
Union-Radiocommunications Sector (ITU-R) offset from this bearing the same number of degrees as the
recommendations. estimated error, and the area or areas partially enclosed by
TO OBTAIN SIMULTANEOUS BEARINGS FROM these lines should be given less weight than the other areas.
TWO OR MORE RDF STATIONS ORGANIZED AS A In figure 2, a ship on course 000˚ obtains bearings of
GROUP: On a request for bearings, the control station of a 031˚ and 065˚ on a radio station. The lines drawn as long
group of RDF stations shall proceed as indicated above. It dashes show the bearings and the continuous lines are their
then should transmit the bearings observed by each station limits of accuracy. It is assumed that the bearings are both
of the group, each bearing being preceded by the call sign accurate within 2˚. The lines AB drawn with dashes and
of the station which observed it. dots are equal to the distance run between bearings. The
distance run is fitted to the lines showing the limits of
100E. Plotting Radio Bearings accuracy of the bearings. This can be done easily by means
of parallel rulers and dividers. The shaded quadrilateral
A fix by radio bearings is defined as follows: shows the ship’s probable position at the time of the second
– Three or more bearings taken simultaneously. bearings, if both bearings are accurate within 2˚.
– Two bearings and a sounding. Information on various kinds of land-based
– Two bearings and an LOP from a celestial body. radiobeacons, their accuracy, and use may be found in the
– Two bearings and a synchronized air or submarine NGA Lists of Lights (LLPUB110 - 116), Coast Guard
signal. Light Lists (COMDTM165021 - 165027), and “The
– Two bearings on the same station and the measure of American Practical Navigator” (Bowditch) (NVPUB9).
distance run (solve as if doubling the angle on the bow)
between bearings. 100F. Radio Bearing Conversion
Radio bearings are great circle azimuths (the bearing is
the angle between the meridian of the ship or station taking The table on pg. 1-7 may be used to convert radio or
the bearing and the great circle, not the rhumb line). They great circle bearings into Mercator bearings for plotting on
can be plotted directly upon gnomonic charts, but they a Mercator chart. The table should be used when the
cannot be plotted on a Mercator chart without first being distance between the ship and station is over 50 miles. The
corrected as described in sec. 100F. arguments used to find the correction are the middle
WEIGHT TO BE GIVEN TO RADIO BEARINGS: latitude (Lm) and the difference of longitude (DLo)
Before using a radio bearing for navigational purposes, the between the position of the radio station and the dead
mariner should consider the conditions under which it was reckoning (DR) position of the vessel.
taken and should compare the conditions with those given EXAMPLE: A vessel in DR position 56˚04'N, 142˚43'W
in sec. 100B on accuracy. takes a bearing on the radiobeacon at Cape Spencer Light
Land-based marine radiobeacon signals received by Station at 58˚12.0'N, 136˚38.3'W. The bearing observed is
ships may only provide a bearing accuracy relative to 057.5˚. Find the Mercator bearing.
vessel heading of ±3˚ - 10˚. This is not satisfactory for Lm (to nearest whole degree) = 57˚
navigation in restricted channels or harbors. DLo (to nearest half degree) = 6˚
TRANSMITTERS AND RECEIVERS: Bearings With Lm 57˚ and the DLo 6˚ enter the conversion table
reported by a direction finding station ashore must be and extract the correction 2.5˚. The receiver (ship) is in N
1-5
latitude; the transmitter (radiobeacon) is eastward. is in N latitude; the transmitter (ship) is eastward.
Following the rule given at the bottom of the table, the Following the rule given at the bottom of the table, the
correction is to be added: correction is to be added:
Great circle bearing . . . . . . . . . . . . . . . . . . . . . . . 057.5˚ Great circle bearing . . . . . . . . . . . . . . . . . . . . . . .081.0˚
Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.5˚ Correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+1.5˚
Mercator bearing . . . . . . . . . . . . . . . . . . . . . . . . . 060.0˚ Mercator bearing . . . . . . . . . . . . . . . . . . . . . . . . .082.5˚
To plot the bearing, add 180˚ to Mercator bearing, giving
240˚, the rhumb line bearing of the ship from the 100G. Direction Finding Station List
radiobeacon.
EXAMPLE: A vessel in DR position 42˚20'N, 66˚14'W The station list starting on pg. 1-8 shows the names,
requests a bearing from a direction finder station at positions, and characteristics of radio direction finding
42˚08'N, 70˚42'W. The bearing given is 081˚. Find the stations.The frequencies used are broken down as follows:
Mercator bearing. A–Frequency on which station (or control station) keeps
Lm (to nearest whole degree) = 42˚ watch.
DLo (to nearest half degree) = 4.5˚ B–Frequency for transmission of signals on which
With Lm 42˚ and DLo 4.5˚, enter the conversion table bearings are observed.
and extract the correction 1.5˚. The receiver (RDF station) C– Frequency on which results are transmitted.
Figure 1. Figure 2.
1-6
Radio Bearing Conversion Table

Mid Correction to be applied to radio bearing to convert to Mercator bearing Mid
Lat. Difference of Longitude Lat.
0.5˚ 1˚ 1.5˚ 2˚ 2.5˚ 3˚ 3.5˚ 4˚ 4.5˚ 5˚ 5.5˚ 6˚ 6.5˚ 7˚ 7.5˚
˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚ ˚
4 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.2 0.2 0.2 0.3 4
5 0.1 0.1 0.1 .1 .1 .2 .2 .2 .2 .2 .3 .3 .3 .3 5
6 .1 .1 .1 .1 .2 .2 .2 .2 .3 .3 .3 .3 .4 .4 6
7 .1 .1 .1 .2 .2 .2 .3 .3 .3 .3 .4 .4 .4 .5 7
8 .1 .1 .1 .2 .2 .2 .3 .3 .4 .4 .4 .5 .5 .5 8
9 .1 .1 .1 .2 .2 .2 .3 .3 .4 .4 .5 .5 .6 .6 9
10 .1 .1 .1 .2 .2 .3 .4 .4 .4 .5 .5 .6 .6 .6 10
11 .1 .1 .2 .2 .3 .3 .4 .4 .5 .5 .6 .6 .7 .7 11
12 0.1 .1 .1 .2 .3 .3 .4 .4 .5 .5 .6 .6 .7 .7 .8 12
13 .1 .1 .2 .2 .3 .3 .4 .4 .5 .6 .6 .7 .7 .8 .8 13
14 .1 .1 .2 .2 .3 .4 .4 .5 .6 .6 .7 .7 .8 .8 .9 14
15 .1 .1 .2 .3 .3 .4 .4 .5 .6 .6 .7 .8 .8 .9 1.0 15
16 .1 .1 .2 .3 .4 .4 .5 .6 .6 .7 .8 .8 .9 1.0 1.0 16
17 .1 .2 .2 .3 .4 .4 .5 .6 .6 .7 .8 .9 1.0 1.0 1.1 17
18 .1 .2 .2 .3 .4 .5 .5 .6 .7 .8 .8 .9 1.0 1.1 1.2 18
19 .1 .2 .2 .3 .4 .5 .6 .6 .7 .8 .9 1.0 1.1 1.1 1.2 19
20 .1 .2 .2 .3 .4 .5 .6 .7 .8 .8 .9 1.0 1.1 1.2 1.3 20
21 .1 .2 .3 .4 .5 .5 .6 .7 .8 .9 1.0 1.1 1.2 1.2 1.4 21
22 .1 .2 .3 .4 .5 .6 .6 .8 .8 .9 1.0 1.1 1.2 1.3 1.4 22
23 .1 .2 .3 .4 .5 .6 .7 .8 .9 1.0 1.1 1.2 1.3 1.4 1.5 23
24 .1 .2 .3 .4 .5 .6 .7 .8 .9 1.0 1.1 1.2 1.3 1.4 1.5 24
25 .1 .2 .3 .4 .5 .6 .7 .8 1.0 1.1 1.2 1.3 1.4 1.5 1.6 25
26 .1 .2 .3 .4 .6 .6 .8 .9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 26
27 .1 .2 .3 .4 .6 .7 .8 .9 1.0 1.1 1.2 1.4 1.5 1.6 1.7 27
28 .1 .2 .4 .5 .6 .7 .8 .9 1.1 1.2 1.3 1.4 1.5 1.6 1.8 28
29 .1 .2 .4 .5 .6 .7 .8 1.0 1.1 1.2 1.3 1.4 1.6 1.7 1.8 29
30 .1 .2 .4 .5 .6 .8 .9 1.0 1.1 1.2 1.4 1.5 1.6 1.8 1.9 30
31 .1 .2 .4 .5 .6 .8 .9 1.0 1.2 1.3 1.4 1.6 1.7 1.8 1.9 31
32 .1 .3 .4 .5 .7 .8 .9 1.1 1.2 1.3 1.4 1.6 1.7 1.8 2.0 32
33 .1 .3 .4 .6 .7 .8 1.0 1.1 1.2 1.4 1.5 1.6 1.8 1.9 2.0 33
34 .1 .3 .4 .6 .7 .8 1.0 1.1 1.2 1.4 1.5 1.7 1.8 2.0 2.1 34
35 .1 .3 .4 .6 .7 .9 1.0 1.2 1.3 1.4 1.6 1.7 1.9 2.0 2.2 35
36 .1 .3 .4 .6 .7 .9 1.0 1.2 1.3 1.5 1.6 1.8 1.9 2.1 2.2 36
37 .2 .3 .4 .6 .8 .9 1.1 1.2 1.4 1.5 1.6 1.8 2.0 2.1 2.2 37
38 .2 .3 .5 .6 .8 .9 1.1 1.2 1.4 1.5 1.7 1.8 2.0 2.2 2.3 38
39 .2 .3 .5 .6 .8 1.0 1.1 1.2 1.4 1.6 1.7 1.9 2.1 2.2 2.4 39
40 .2 .3 .5 .6 .8 1.0 1.1 1.3 1.4 1.6 1.8 1.9 2.1 2.2 2.4 40
41 .2 .3 .5 .6 .8 1.0 1.2 1.3 1.5 1.6 1.8 2.0 2.1 2.3 2.5 41
42 .2 .3 .5 .7 .8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2 2.3 2.5 42
43 .2 .3 .5 .7 .8 1.0 1.2 1.4 1.5 1.7 1.9 2.1 2.2 2.4 2.6 43
44 .2 .4 .5 .7 .9 1.1 1.2 1.4 1.6 1.7 1.9 2.1 2.2 2.4 2.6 44
45 .2 .4 .5 .7 .9 1.1 1.2 1.4 1.6 1.8 2.0 2.1 2.3 2.5 2.6 45
46 .2 .4 .5 .7 .9 1.1 1.3 1.4 1.6 1.8 2.0 2.2 2.3 2.5 2.7 46
47 .2 .4 .6 .7 .9 1.1 1.3 1.5 1.7 1.8 2.0 2.2 2.4 2.6 2.8 47
48 .2 .4 .6 .8 .9 1.1 1.3 1.5 1.7 1.8 2.1 2.2 2.4 2.6 2.8 48
49 .2 .4 .6 .8 1.0 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.6 2.8 49
50 .2 .4 .6 .8 1.0 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 50
51 .2 .4 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 2.1 2.3 2.5 2.7 2.9 51
52 .2 .4 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 52
53 .2 .4 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 53
54 .2 .4 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 54
55 .2 .4 .6 .8 1.0 1.2 1.4 1.6 1.8 2.1 2.2 2.4 2.7 2.9 3.1 55
56 .2 .4 .6 .8 1.0 1.2 1.4 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 56
57 .2 .4 .6 .8 1.1 1.2 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.2 57
58 .2 .4 .6 .8 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.6 2.8 3.0 3.2 58
59 .2 .4 .6 .8 1.1 1.3 1.5 1.7 1.9 2.2 2.4 2.6 2.8 3.0 3.2 59
60 .2 .4 .6 .9 1.1 1.3 1.5 1.7 2.0 2.2 2.4 2.6 2.8 3.0 3.2 60
0.5˚ 1˚ 1.5˚ 2˚ 2.5˚ 3˚ 3.5˚ 4˚ 4.5˚ 5˚ 5.5˚ 6˚ 6.5˚ 7˚ 7.5˚
Receiver Transmitter (direction Correction Receiver (latitude) Transmitter (direction Correction
(latitude) from receiver) Sign from receiver) Sign
North Eastward + South Eastward —
North Westward — South Westward +
1-7
(1) (2) (3) (4) (5) (6) (7) (8)

No. Name Type Position Frequency Range Procedure Remarks
Rx Tx
CANADA
The VHF direction finding stations of Canada are for emergency use only. All stations are remotely controlled by a Marine
Communications and Traffic Services Center (MCTS). The following details of operation are common to all of these stations:
A. Ch.16.
B. Ch.16 (distress only).
C. Ch.16 (distress only).
1001 Cap-aux-Meules. RDF 47 23 14 N MCTS Riviere-au-Renard (VCG).

61 51 40 W
1001.3 Fortune Head. RDF 47 03 54 N MCTS Placentia (VCP).

2-4326 55 51 04 W
1001.35 Grosses-Roches. RDF 48 54 51 N MCTS Les Escoumins (VCF).

2-4326 67 06 38 W
1001.45 Havre St.-Pierre. RDF 50 16 15 N MCTS Riviere-au-Renard (VCG).

2-4326 63 40 44 W
1001.6 Lac D'aigle (Sept RDF 50 17 21 N MCTS Les Escoumins (VCF).

2-4326 Iles). 66 18 43 W
1001.85 Mont-Louis. RDF 49 12 48 N MCTS Les Escoumins (VCF).

2-4326 65 46 27 W
1001.9 Montmagny. RDF 46 55 42 N MCTS Quebec (VCC).

2-4326 70 30 45 W
1001.95 Natashquan. RDF 50 08 40 N MCTS Riviere-au-Renard (VCG).

2-4326 61 48 00 W
1002 Newport. RDF 48 13 37 N MCTS Riviere-au-Renard (VCG).

2-4326 64 47 33 W
1002.1 Pointe Heath. RDF 49 05 05 N MCTS Riviere-au-Renard (VCG).

2-4326 61 42 09 W
1002.15 Riviere-au-Renard. RDF 49 00 29 N MCTS Riviere-au-Renard (VCG).

2-4326 64 24 00 W
1002.2 Riviere du Loup. RDF 47 45 26 N MCTS Quebec (VCC).

2-4326 69 36 14 W
1002.35 Twillingate. RDF 49 41 16 N MCTS St. Anthony (VCM).

2-4326 54 48 03 W
1002.36 Banks. RDF 44 28 30 N MCTS Thunder Bay (VBA).

80 20 56 W
Seasonal operation: April 1-December 31.
1002.37 Brougham. RDF 43 55 13 N MCTS Prescott (VBR).

79 06 51 W
1002.38 Cape Croker. RDF 44 57 30 N MCTS Thunder Bay (VBA).

80 57 53 W
1002.4 Cobourg. RDF 44 04 02 N MCTS Prescott (VBR).

78 12 38 W
1002.45 Pointe au Baril. RDF 45 33 50 N MCTS Thunder Bay (VBA).

80 19 18 W
1002.5 Tobermory. RDF 45 09 42 N MCTS Thunder Bay (VBA).

81 29 55 W
1-8
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
1002.55 Trafalgar. RDF 43 29 41 N MCTS Prescott (VBR).

79 43 47 W
1002.6 Barry Inlet. RDF 52 34 30 N MCTS Prince Rupert (VAJ).

2-3510 131 45 13 W
1002.65 Calvert Island. RDF 51 35 21 N MCTS Prince Rupert (VAJ).

2-3510 128 00 43 W
1002.7 Cumshewa. RDF 53 09 33 N MCTS Prince Rupert (VAJ).

2-3510 131 59 47 W
1002.75 Dundas Island. RDF 54 31 16 N MCTS Prince Rupert (VAJ).

2-3510 130 54 55 W
1002.8 Klemtu. RDF 52 34 45 N MCTS Prince Rupert (VAJ).

2-3510 128 33 45 W
1002.85 Mount Gil. RDF 53 15 46 N MCTS Prince Rupert (VAJ).

2-3510 129 11 42 W
1002.9 Mount Hays. RDF 54 17 12 N MCTS Prince Rupert (VAJ).

2-3510 130 18 49 W
1002.95 Naden Harbor. RDF 53 57 18 N MCTS Prince Rupert (VAJ).

2-3510 132 56 30 W
1003 Van Inlet. RDF 53 15 08 N MCTS Prince Rupert (VAJ).

2-3510 132 32 31 W
UNITED KINGDOM
The VHF direction finding stations of the United Kingdom are for emergency use only. Except for Guernsey and Jersey, all are
remotely controlled by a HM Coast Guard Maritime Rescue Coordination Center or Sub-Center (MRCC/MRSC). The following
details of operation are common to all of these stations:
A. Ch.16.
B. Ch.16 (distress only).
Ch.67. Ch.82 (Jersey
only).
C. Ch.16 (distress only).
Ch.67. Ch.82 (Jersey
only).
1055 Barra. RDF 57 00 49 N MRSC Stornoway.

2-0001 7 30 25 W
1060 Bawdsey. RDF 51 59 36 N MRSC Thames.

2-0001 1 25 00 E
1065 Berry Head. RDF 50 23 58 N MRSC Brixham.

2-0001 3 29 03 W
1066 Boniface. RDF 50 36 13 N MRSC Solent.

2-0001 1 12 02 W
1070 Compass Head. RDF 59 52 03 N MRSC Shetland.

2-0001 1 16 18 W
1072 Crosslaw. RDF 55 54 29 N MRSC Forth.

2-0001 2 12 19 W
1073 Cullercoats. RDF 55 04 00 N MRSC Humber.

2-0001 1 28 00 W
1075 Dunnet Head. RDF 58 40 19 N MRCC Aberdeen.

2-0001 3 22 31 W
1080 Easington. RDF 53 39 08 N MRSC Humber.

2-0001 0 05 54 E
1-9
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
1082 East Prawle. RDF 50 13 06 N MRSC Brixham.

2-0001 3 42 30 W
1086 Fairlight. RDF 50 52 11 N MRCC Dover.

2-0001 0 38 44 E
1087 Fife Ness. RDF 56 16 42 N MRSC Forth.

2-0001 2 35 18 W
1088 Flamborough. RDF 54 07 05 N MRSC Humber.

2-0001 0 05 13 W
1089 Great Ormes Head. RDF 53 19 58 N MRSC Holyhead.

2-0001 3 51 15 W
1090 Grove Point. RDF 50 32 56 N MRSC Portland.

2-0001 2 25 12 W
1090.5 Guernsey. RDF 49 26 16 N

2-0155 2 35 46 W
1091 Hartland. RDF 51 01 13 N MRCC Swansea.

2-0001 4 31 24 W
1091.2 Hartlepool. RDF 54 41 47 N MRSC Humber.

2-0001 1 10 34 W
1092 Hengistbury Head. RDF 50 42 57 N MRSC Portland.

2-0001 1 45 38 W
1093 Inverbervie. RDF 56 51 06 N MRSC Forth.

2-0001 2 15 39 W
1093.5 Jersey. RDF 49 10 51 N

2-0155 2 14 18 W
1094 Kilchiaran. RDF 55 45 54 N MRCC Clyde.

2-0001 6 27 11 W
1094.1 Lands End. RDF 50 08 08 N MRCC Falmouth.

2-0001 5 38 11 W
1094.2 Langdon Battery. RDF 51 07 58 N MRCC Dover.

2-0001 1 20 35 E
1094.5 Law Hill. RDF 55 41 46 N MRCC Clyde.

2-0001 4 50 28 W
1095 Lizard. RDF 49 57 36 N MRCC Falmouth.

2-0001 5 12 04 W
1095.5 Lowestoft. RDF 52 28 36 N MRCC Yarmouth.

2-0001 1 42 12 E
1096 Newhaven. RDF 50 46 56 N MRSC Solent.

2-0001 0 03 01 E
1097 Newton. RDF 55 31 01 N MRSC Humber.

2-0001 1 37 06 W
1098 North Foreland. RDF 51 22 32 N MRCC Dover.

2-0001 1 26 43 E
1098.2 Noss Head. RDF 58 28 48 N MRCC Aberdeen.

2-0001 3 03 00 W
1098.3 Portnaguran. RDF 58 14 49 N MRSC Stornoway.

2-0001 6 09 44 W
1 - 10
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
1098.5 Orlock Head. RDF 54 40 25 N MRSC Belfast.

2-0175 5 34 58 W
1105 Rame Head. RDF 50 19 02 N MRSC Brixham.

2-0001 4 13 12 W
1105.2 Rhiw. RDF 52 50 00 N MRSC Holyhead.

2-0001 4 37 49 W
1106 Rodel. RDF 57 44 54 N MRSC Stornoway.

2-0001 6 57 25 W
1108 St. Ann's Head. RDF 51 40 58 N MRSC Milford Haven.

2-0001 5 10 31 W
1109 St. Mary's, Isles of RDF 49 55 44 N MRCC Falmouth.

2-0001 Scilly. 6 18 15 W
1115 Selsey. RDF 50 43 48 N MRSC Solent.

2-0001 0 48 13 W
1116 Shoeburyness. RDF 51 31 23 N MRSC Thames.

2-0001 0 46 30 E
1117 Skegness. RDF 53 09 00 N MRCC Yarmouth.

2-0001 0 21 00 E
1120 Snaefell. RDF 54 15 50 N MRSC Liverpool.

2-0001 4 27 40 W
1150 Tiree. RDF 56 30 37 N MRCC Clyde.

2-0001 6 57 41 W
1155 Trevose Head. RDF 50 32 55 N MRCC Falmouth.

2-0001 5 01 59 W
1160 Trimingham. RDF 52 54 34 N MRCC Yarmouth.

2-0001 1 20 36 E
1165 Tynemouth. RDF 50 01 04 N MRSC Humber.

2-0001 1 24 59 W
1170 Walney Island. RDF 54 06 37 N MRSC Liverpool.

2-0001 3 16 00 W
1171 West Torr. RDF 55 11 42 N MRSC Belfast.

2-0175 6 05 12 W
1172 Whitby. RDF 54 29 24 N MRSC Humber.

2-0001 0 36 18 W
1175 Wideford Hill. RDF 58 59 17 N MRSC Shetland.

2-0001 3 01 24 W
1180 Windyhead. RDF 57 38 54 N MRCC Aberdeen.

2-0001 2 14 30 W
1 - 11
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
FRANCE
The VHF direction finding stations of France are for emergency use only. The following details of operation are common to all of
these stations:
CROSS Stations:
A. Ch.11, 16 (67 when 11
is in use for distress
traffic).
B. Ch.11, 16 (67).
C. Ch.11, 16 (67).
Signal and lookout
stations:
A. Ch.16 and 7 additional
frequencies (swept by
scanner) from Ch.1-29,
36, 39, 48, 50, 52, 55,
56, 60-88.
B. Ch.11, 16.
C. Ch.11, 16.
1182 Gris-Nez. RDF 50 52 12 N Controlled by CROSS.

2-0815 1 35 00 E
1182.1 Jobourg. RDF 49 41 06 N Controlled by CROSS.

2-0815 1 54 36 W
1182.2 Roches-Douvres. RDF 49 06 30 N Controlled by CROSS-Jobourg.

2-0815 2 48 48 W
1182.3 Dunkerque. RDF 51 03 24 N Controlled by signal station.

2-0815 2 20 24 E
1182.4 Boulogne. RDF 50 44 00 N Controlled by signal station. Day

2-0815 1 36 00 E service only.
1182.5 Ault. RDF 50 06 30 N Controlled by signal station. Day

1182.6 Dieppe. RDF 49 56 00 N Controlled by signal station. Day

1182.7 Fecamp. RDF 49 46 06 N Controlled by signal station.

2-0815 0 22 12 E
1182.8 La Heve. RDF 49 30 36 N Controlled by signal station.

2-0815 0 04 12 E
1182.9 Villerville. RDF 49 23 12 N Controlled by signal station. Day

1183 Port-en-Bessin. RDF 49 21 06 N Controlled by signal station.

2-0815 0 46 18 W
1183.05 Saint-Vaast. RDF 49 34 30 N Controlled by signal station. Day

2-0815 1 16 30 W service only from Jun. 1 to Sep. 30.
1183.1 Barfleur. RDF 49 41 54 N Controlled by signal station.

2-0815 1 15 54 W
1183.2 Homet. RDF 49 39 30 N Controlled by lookout station.

2-0815 1 37 54 W
1 - 12
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
1183.25 La Hague. RDF 49 43 36 N Controlled by signal station. Day

2-0815 1 56 18 W service only.
1183.3 Carteret. RDF 49 22 24 N Controlled by signal station.

2-0815 1 48 18 W
1183.35 Le Roc. RDF 48 50 06 N Controlled by signal station. Day

2-0815 1 36 54 W service.
1183.45 Le Grouin RDF 48 42 36 N Controlled by signal station. Day

2-0815 (Cancale). 1 50 36 W service only from Jun. 1 to Sep. 15.
1183.5 Saint-Cast. RDF 48 38 36 N Controlled by signal station. Day

1183.55 S. Quay Portrieux. RDF 48 39 18 N Controlled by signal station.

2-0815 2 49 30 W
1183.6 Brehat. RDF 48 51 18 N Controlled by signal station. Day

1183.65 Ploumanach. RDF 48 49 30 N Controlled by signal station.

2-0815 3 28 12 W
1183.7 Batz. RDF 48 44 48 N Controlled by signal station. Day

1183.75 Brignogan. RDF 48 40 36 N Controlled by signal station.

2-0815 4 19 42 W
1183.8 Le Stiff (Ile RDF 48 28 36 N Controlled by CROSS-Corsen.

2-0815 d'Ouessant). 5 03 06 W
1183.85 Saint-Mathieu. RDF 48 19 48 N Controlled by lookout station.

2-0815 4 46 12 W
1183.9 Toulinguet RDF 48 16 48 N Controlled by signal station. Day

2-0815 (Camaret). 4 37 30 W service only.
1183.95 Cap de la Chevre. RDF 48 10 12 N Controlled by signal station. Day

1184 Pointe du Raz. RDF 48 02 18 N Controlled by signal station.

2-0815 4 43 48 W
1184.05 Penmarc'h. RDF 47 47 54 N Controlled by signal station.

2-0815 4 22 24 W
1184.1 Beg-Meil. RDF 47 51 18 N Controlled by signal station. Day

1184.15 Etel. RDF 47 39 48 N Controlled by CROSS.

2-0815 3 12 00 W
1184.2 Beg Melen. RDF 47 39 12 N Controlled by signal station. Day

1 - 13
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
1184.3 Saint-Julien. RDF 47 29 42 N Controlled by signal station. Day

1184.4 Le Talut. RDF 47 17 42 N Controlled by signal station.

2-0815 3 13 00 W
1184.45 Piriac. RDF 47 22 30 N Controlled by signal station. Day

1184.5 Chemoulin. RDF 47 14 06 N Controlled by signal station.

2-0815 2 17 48 W
1184.55 Saint-Sauveur. RDF 46 41 42 N Controlled by signal station.

2-0815 2 18 48 W
1184.6 Les Baleines. RDF 46 14 36 N Controlled by signal station. Day

1184.65 Chassiron. RDF 46 02 48 N Controlled by signal station.

2-0815 1 24 30 W
1184.75 Pointe de Grave. RDF 45 34 18 N Controlled by signal station.

2-0815 1 03 54 W
1184.8 Cap Ferret. RDF 44 37 30 N Controlled by signal station.

2-0815 1 15 00 W
1184.82 Messanges. RDF 43 48 48 N Controlled by signal station. Day

1184.85 Socoa. RDF 43 23 42 N Controlled by signal station.

2-0815 1 41 06 W
1185.5 La Garde. RDF 43 06 18 N Controlled by CROSS.

2-1040 5 59 30 E
1185.6 Cap Bear. RDF 42 30 48 N Controlled by signal station.

2-1040 3 08 00 E
1185.7 Cap Leucate. RDF 42 55 06 N Controlled by signal station.

2-1040 3 03 42 E
1185.8 Sete. RDF 43 29 54 N Controlled by signal station.

2-1040 3 41 30 E
1185.9 L'Espiguette. RDF 43 23 54 N Controlled by signal station.

2-1040 3 41 36 E
1186 Cap Couronne. RDF 43 20 06 N Controlled by signal station.

2-1040 5 03 18 E
1186.2 Bec de L'Aigle. RDF 43 10 30 N Controlled by signal station. Day

1186.3 Cap Cepet. RDF 43 04 48 N Controlled by lookout station.

2-1040 5 56 30 E
1186.4 Porquerolles. RDF 43 00 00 N Controlled by signal station.

2-1040 6 13 42 E
1 - 14
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
1186.5 Cap Camarat. RDF 43 12 06 N Controlled by signal station.

2-1040 6 40 30 E
1186.6 Cap du Dramont. RDF 43 24 48 N Controlled by signal station. Day

1186.7 La Garoupe. RDF 43 34 00 N Controlled by signal station.

2-1040 7 08 12 E
1186.8 Cap Ferrat. RDF 43 41 12 N Controlled by signal station.

2-1040 7 19 30 E
1186.9 Cap Corse. RDF 43 00 18 N Controlled by signal station. Day

1187 Ile Rousse. RDF 42 37 54 N Controlled by signal station. Day

1187.1 La Parata. RDF 41 54 06 N Controlled by signal station. Day

1187.2 Pertusato. RDF 41 22 24 N Controlled by signal station.

2-1040 9 10 42 E
1187.3 La Chiappa. RDF 41 35 36 N Controlled by signal station.

2-1040 9 21 54 E
1187.4 Alistro. RDF 42 15 36 N Controlled by signal station.

2-1040 9 32 30 E
1187.5 Sagro. RDF 42 47 48 N Controlled by signal station.

2-1040 9 29 24 E
BULGARIA
1187.61 Nos Galata Lt. RDF 43 10 17 N 297.5 kHz, A2A. 5 On request to Hydrographic Transmits DG.
2-1282 27 56 49 E Service, Varna.
PAKISTAN
1188 Karachi (ASK). RDF 24 52 44 N 24 51 05 N A. 410, 500 kHz, A1A. CALIBRATED SECTOR: 360°.
2-2147 67 09 50 E 67 02 32 E B. 410, 500 kHz, A1A.
C. 410, 500 kHz, A1A,
A2A, 1.5 kW.
1 - 15
PART II RADAR STATIONS
110A. Coast and Port Radar Station List relieve the Master of his responsibility for the safe
navigation of his ship.
Details concerning shore-based radar stations rendering Mariners are warned that port radar stations may
navigational assistance to ships on request are given in the suspend operation without notice for varying periods
listings which follow. These stations are indicated on because of minor defects, maintenance work, etc.
charts by the abridged description: Ra. Many of these stations provide radar information in
conjunction with Vessel Traffic Service (VTS) operations.
These stations provide information of interest to the In many ports participation in VTS may be compulsory for
mariner. They have a limited range of transmission and certain classes of vessels. For further information on VTS
usually broadcast traffic, navigational, weather and other in specific ports, refer to National Ocean Service Coast
information concerning only their port limits and Pilots (NOSPBCP1 - 9), NGA Sailing Directions (SDPUB
approaches. The provision of such information does not or CDPUBSD 120 - 200), and other applicable guides.
1 - 16
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
RUSSIA
1190 Sankt-Peterburg. RA Ch.12. Call Sankt-Peterburg Radio-12. Vessels can obtain assistance
between sea buoy and heads of
Severnaya and Yuzhnaya Dambas.
1192 Novorossiysk. RA Ch.09,95. Call Novorossiysk 17. Continuous radar guidance is

compulsory for vessels over 200 GRT.
Covers area N of 44-37.7N, between
37-48.0E 37-52.9E.
1194 Nakhodka. RA Ch.12,16. Call Traffic Control Center Mandatory radar control of vessels N
(Kamenskiy 17). of line joining 42-44.0N 132-51.6E and
42-42.9N 132-59.9E.
1196 Murmansk. RA Ch.12,18,67. Call Coast Radar Station When visibility is less than 0.5M,
(Murmansk Radio 9). navigation will only be conducted
under radar control. Covers area S of
60-02.7N and should be requested 2
hrs. in advance.
LATVIA
1198 Ventspils. RA Ch.14,16. Call Radio 9. Compulsory when visibility is less than
2M or vessel is over 150m in length or
12000 DWT.
LITHUANIA
1199 Klaipeda. RA Ch.09. Call Radio 17. Compulsory when visibility is less than
0.5M or for ferries, tankers, vessels
with dangerous cargos and vessels
constrained by their draft.
POLAND
1200 Leba. RA Ch.12,16. Call Leba Port Radar. Covers area of port and roads.
1201 Darlowo. RA Ch.12,16; or Witowo Call Darlowo Port Radar

Radio (SPS) 2182kHz. Station.
1202 Kolobrzeg. RA Ch.12,16. Call Kolobrzeg Port Radar Covers area of port and roads.
Station.
SWEDEN
1203 Goteborg. RA Ch.09,13,16. Call Goteborg Trafik. Available on request for large tankers
and other vessels with defective radar
in poor visibility. Covers the area
seaward of Alvsborgsbron (57-41.5N
11-54.2E).
NORWAY
1204 Fedje. RA Ch.16,80. Compulsory for all vessels over 200

GRT or 24m. in length (including tows)
or carrying dangerous cargos.
Permission to navigate within the VTS
area should be obtained at least 1 hr.
before entering the area. Covers the
approaches of the Sture and
Mongstad oil terminals.
1 - 17
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Rx Tx
GERMANY
1205 Die Elbe. RA Cuxhaven Control: Call Cuxhaven Elbe Traffic on Radar information provided on
Elbe Approach West Ch.71,16; Brunsbuttel Elbe request. Vessels exempt from
Ch.65. Traffic on Ch.68,16; or the compulsory pilotage should use this
Elbe Approach East appropriate Control Area. service when visibility is less than
Ch.19. 2000m (on the Lower Elbe, W of
Scharhorn Ch.18. Seemannshoft, less than 3000m).
Neuwerk Ch.05.
Cuxhaven Ch.21.
Belum Ch.03.
Brunsbuttel Control:
Brunsbuttel I Ch.04. II
Ch.67.
S. Margarethen Ch.18.
Freiburg Ch.22
Rhinplatte Ch.05
Pagensand Ch.66
Hetlingen Ch.21
Wedel Ch.60.
1210 Hamburg. RA Light buoy No.123 to 129 Call Cuxhaven Elbe Traffic on Radar service provided on request.
Ch.19. Ch.71; Brunsbuttel Elbe Traffic Vessels exempt from compulsory
Light buoy No.129 to on Ch.68; or Hamburg Radar. pilotage should use this service when
Seemannshoft Ch.03. visibility is less than 2000m (W of
Seemannshoft to Seemannshoft, less than 3000m).
Vorhafen Ch.63.
Parkhafen to Kuhwerder
Vorhafen Ch.07.
Kuhwerder Vorhafen to
Norderelbbrucke Ch.05.
Kohlbrand to Harburger
harbors Ch.80.
1215 Die Weser. RA Alte Weser Ch.22. Call Bremerhaven Weser Radar information is provided on
Hohe Weg I,II Ch.02. Radar or Bremen Weser request or if instructed by the VTS
Robbenplate I,II Ch.04. Radar on Ch.16. Center (in German and English).
Blexen Ch.07. Radar service is provided when
Luneplate I Ch.05. II visibility is less than 3000m
Ch.82. (Bremerhaven Weser) or 2000m
Dedesdorf Ch.82. (Bremen Weser); when pilot vessel is
Sandstedt Ch.21. in a sheltered position; when light
Harriersand I Ch.21. II buoys are withdrawn due to ice; when
Ch.19. required by traffic situation or when
Elsflether Ch.19. requested by a vessel. VTS
Ronnebeck, compulsory for all vessels over 50m in
Ritzenbutteler, length and all vessels carrying
Schonebecker Ch.78. dangerous cargo.
Ochtumer, Seehausen,
Lankenau Ch.81.
All stations Ch.16.
1216 Die Jade. RA Jade I,II: Light buoy Call Jade Radar Ch.16. Radar information provided when
1b/Jade 1 to 33 Ch.63. visibility is less than 3000m; when pilot
Light buoy 33 to 60 Ch.20. vessel is in a sheltered position; when
light buoys are withdrawn due to ice;
when required by traffic situation or
when requested by a vessel. VTS
compulsory for vessels (including
tows) over 50m in length and all
vessels carrying dangerous cargo.
1217 Die Ems. RA Borkum: Light buoy No.1 Call Ems Traffic. Radar information is provided on
to 35 Ch.18. request or if instructed by the VTS
Knock: Light buoy No.35 Center (in German and English).
to 57 Ch.20. Radar service is provided when
Wybelsum: Light buoy visibility is less than 2000m; when pilot
No.57 to Emden harbor vessel is in a sheltered position; when
entrance Ch.21. light buoys are withdrawn due to ice;
when required by traffic situation or
when requested by a vessel. VTS
compulsory for all vessels over 40m in
length and all vessels carrying
dangerous cargo.
1 - 18
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Rx Tx
NETHERLANDS
1218 Eemshaven. RA Ch.19. Available on request of the Covers Lt buoy 31 or 35 to

pilot 1 hr. in advance to Eemshaven.
Verkeersdienst Eemsmonding
on Ch.14 or Delfzijl Pilot
Vessel on Ch.06,16. Call
Eemshaven Radar.
1218.5 Delfzijl. RA Ch.66. Requests should be made by When visibility falls below 2000m
the master of any sea going or within the jurisdiction of the Delfzijl
inland vessel through the VHF VTS area. Under special
Channel appropriate for the circumstances assistance can be
port. Call Delfzijl Radar. given when visibility is good, for
example if navigational aids are not
working correctly.
1219 Den Helder. RA Ch.12. Call Yerkeerscentrale, Den Vessels equipped with VHF are
Helder. requested to participate. Vessels
should make notification when
navigating in area or passing
Moormanbrug.
1220 Ijmuiden. RA West of Ijmuiden light Call Traffic Center Ijmuiden Radar information provided to vessels
buoy Ch.12. west of Ijmuiden light buoy; within 13M of Ijmuiden light buoy
Ijmuiden light buoy to call Ijmuiden Port Control from (52-28.7N 04-23.9E) which do not
North Sea Locks Ch.09. Ijmuiden light buoy to North have a pilot aboard.
Sea Locks.
1225 Scheveningen. RA Ch.21. 9.5 Call Radar Scheveningen. In reduced visibility vessels may
request information on their position
and traffic.
1226 Dordrecht. RA Ch.19. Call Post Dordrecht.
Nieuwe (Rotterdamsche) Waterweg is covered by the following five Radar Stations. The Traffic Management and Information
Service is compulsory for all vessels navigating in the area. Inbound vessels with draft 20.7m and over should make notification to
HCC Rotterdam through Scheveningen (PCH) 24 hrs. in advance. Vessels with draft 17.4m and over navigating Nieuwe
Waterweg should make notification to Traffic Center Hook through Scheveningen 6 hrs. in advance; vessels 250m and over 4 hrs.
in advance. Inbound vessels with dangerous cargo should report to Central Traffic Control (HCC) 24 hrs. in advance (1 hr. in
advance of unberthing). All other vessels should make notification to Hoek van Holland 3 hrs. in advance of arrival and notify their
area Radar Station 1 hr. in advance of unberthing.
1230 Hoek van Holland RA Ch.01,02,03,13,65, 66; Call Traffic Center Hoek van Covers Maas Traffic Separation
(VCH). 2182kHz. Holland. Schemes, Europoort and Nieuwe
Waterweg to Kilometer Post 1023.
1231 Botlek (VCB). RA Ch.13,61,80. Call Traffic Center Botlek. Covers Nieuwe Waterweg to Kilometer
Post 1011 Nieuwe Maas, 1005 Oude
Maas.
1232 Hartel (VPH). RA Ch.62. Call Traffic Center Hartel. Covers Oude Maas to Buoy O12 and
Hartelkanal.
1233 Stad (VCS). RA Ch.13,60,63. Call Traffic Center Stad. Covers Nieuwe Maas to Kilometer
Post 998.
1234 Maasboulevard RA Ch.21,81. Call Traffic Center Covers Nieuwe Maas to Kilometer
(VPM). Maasboulevard. Post 993.
1 - 19
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
UNITED KINGDOM
1237 Lerwick. RA Ch.12. Call Lerwick Harbour Radio. Vessels should report at N and S
Entrances. Covers N Entrance, S
Entrance and Inner Harbour.
1240 Sullom Voe RA Ch.14,16. Call Sullom Voe Harbour Vessels arriving should make
Harbour. Radio. notification 24 hrs. in advance. Covers
Yell Sound and Sullom Voe. VHF
reception is poor W and N of Yell
Sound.
1245 Tees. RA Ch.14,22. 10 Call Tees Harbour Radio. All vessels navigating when "Channel
Closed" signals are displayed or when
visibility is less than 1000m must
obtain prior permission from Harbour
Master; all vessels with dangerous
cargo must make 24 hr. advance
notification; all vessels over 20m must
make 6 hrs. advance notification.
Covers Tees Bay, Tees River to tidal
limits and Hartlepool.
1250 Medway. RA Ch.22. Call Medway Radio. All inbound vessels should contact
Medway Navigation Service 24 hrs. in
advance; outbound vessels should
make 1 hr. advance notification.
1254 Gravesend Radio. RA Thames seaward Call Port Control London or Inbound and outbound vessels should
approaches to Sea Gravesend Radio. make notification 24 hrs. in advance.
Reach No.4 light buoy Covers Thames R. from Erith to
Ch.13. seaward limits of the Port of London.
Sea Reach No.4 light
buoy to Crayford Ness
Ch.12.
Secondary Ch.09,16,
18,20.
1255 Woolwich Radio. RA Ch.14,16,22. Inbound and outbound vessels should

make notification 24 hrs. in advance.
Covers Thames R. from Crayford
Ness to Greenwich.
1262 Harwich. RA Ch.14,20. Inbound and outbound vessels should

1265 Southampton RA Ch.16(calling). Call Southampton VTS. Compulsory for vessels 20m or over.
Vessel Traffic Ch.18,20,22 (working). Inbound vessels should contact VTS
Services Centre. on Ch.12 when approaching the Nab
or the Needles. Covers the Solent and
Southampton waters.
1270 Liverpool. RA Ch.18,22. Call Mersey Radio. Vessels over 50 GRT carrying
Ch.19(tankers to or from dangerous cargo should make
Tranmere). notification 48 hrs. in advance of
arrival/departure. All other vessels
over 50 GRT should make notification
24 hrs. in advance of arrival and 4 hrs.
in advance of departure. Covers River
Mersey including Liverpool,
Birkenhead, Eastham and Garston.
1 - 20
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
FRANCE
1273 Dunkerque. RA Dunkerque Pilots: Call Dunkerque Pilots or Radar coverage of the pilot
Ch.16 (calling). Dunkerque Port. embarkation zone at the entrance to
Ch.72 (working). the Passe de l'Ouest is provided by
Dunkerque Port: the Pilot Station (50-59.2N 01-58.0E).
Ch.73. Radar coverage of the access
channels is provided by the port.
1274 Gris-Nez (CROSS). RA Ch.13,79. Call Gris-Nez Traffic. Radar assistance provided on request.
Two radar stations at Gris-Nez
(50-52.2N 01-35.1E) and Saint-Frieux
(50-36.6N 01-36.6E) provide coverage
extending approximately SW up to
00-30E and NE up to 30 miles from
Gris-Nez.
1275 Le Havre. RA Ch.12. Call Havre Port. Radar assistance provided on request
in poor visibility for Le Havre or Antifer.
The area of radar coverage is a
circular zone 12.5 miles radius
centered on 49-39.0N 00-08.0W
(approx.). Inbound vessels should
Outbound vessels should make
notification 24 hrs. in advance.
1280 La Seine. RA Ch.13,73. Call Honfleur Radar. Radar assistance provided in poor
visibility and on request. The area of
radar coverage extends to 20 miles W
of Radar Honfleur (49-25.7N
00-14.1E) up to 00-36.2E.
1285 Rouen. RA Ch.13,73. Call Radar Honfleur. Radar assistance provided in poor
visibility and on request. Coverage
area extends to 20 miles W of Radar
Honfleur (49-25.7N 00-14.1E) up to
00-36.2E.
1287 Corsen (CROSS). RA Ch.13,79. Call Ouessant Traffic. Coverage area is a circular zone up to
35 miles from Le Stiff Radar Tower
(48-28.6N 05-03.1W).
1288 La Loire. RA Ch.12. Call Saint-Nazaire Port. Radar assistance provided on request.
Coverage area from the pilot boarding
point (47-07.5N 02-21.5W) to
Saint-Nazaire Roads.
1290 La Gironde. RA Ch.16 (calling). Call Radar Verdon 3 hrs. in Covers La Gironde and approaches (a
Ch.12,14 (working). advance of ETA on Ch. 12. circular zone 34 miles radius centered
on (45-39.8N 01-07.2W). Radar
information is supplied on Ch. 12 or 14
for the area between BXA lightbuoy
and Le Verdon's roads. Notification of
arrival should be made 48 hrs. in
advance to Bordeaux Traffic through
agent, 24 hrs. and 12 hrs. in advance
direct to Bordeaux Traffic.
PORTUGAL
1295 Aveiro. RA Ch.14,16. Call Pilotosaveiro. In bad weather pilot vessel assists
vessel's approach to harbor entrance.
Arrival notification should be made 6
hrs. in advance.
1 - 21
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
SPAIN
1300 Strait of Gibraltar. RA Ch.10,16. 19 Call Tarifa Traffic. Tarifa Vessel Traffic Service is
compulsory for VHF-equipped vessels
which are Spanish flag, intend to enter
Spanish territorial seas, have
dangerous cargo or limitations to
maneuverability or navigation. Vessels
should call when within 21M of Tarifa
(36-01.1N 05-34.8W) or on leaving a
port within that area.
UKRAINE
1305 Odessa. RA Ch.14,16. Call Odessa Port Control.
1310 Yuzhnyy. RA Ch.16,74. Call Yuzhnyy Radio 5.
1315 Mariupol RA Ch.14,16. Call Zhdanov Radio 1. Provides radar assistance in restricted
(Zhdanov). visibility and in the absence of
navigational aids. Covers from
approach channel buoys 15 and 16 to
berths in Port Zhdanov.
MOROCCO
1320 Casablanca. RA Ch.12. Call CNP2. Vessels should send notification of

arrival to the Port Captain through
Casablanca (CNP) 24 hrs. in advance.
THAILAND
1480 Laem Chabang. RA 500kHz,A1A,A2A;2182 Pilotage is compulsory. ETA should be

kHz,A3E,H3E;Ch.13, sent 24 hrs. in advance.
14,16. Radar-equipped VTS station is located
at Laem Krabang Hill.
REPUBLIC OF KOREA
1520 Busan. RA Ch.12,14,16,20,22. Call Busan Port Control. Radar assistance is available during
limited visibility.
JAPAN
1530 Osaka. RA 2182,2130,2150, 8 Call Osaka Harbor Radar. Information on position, traffic and
2394.5kHz,H3E,J3E; weather provided for area within 4M of
Ch.14,16,22. Osaka Central Pier (within 8M for
vessels over 1000 GRT).
1540 Kanmon Kaikyo. RA 1651kHz,H3E;Ch.13, Call Kanmon MARTIS. All vessels should report on entering
14,16,22. the Radar Service Area. Covers
Kanmon Kaikyo, including W and E
approaches and area N and E of
Mutsure Shima.
1550 Bisan Seto. RA 1651kHz,H3E;Ch.13, Call Bisan MARTIS. All vessels should report on entering
14,16,22. the Radar Service Area. Covers all
traffic routes between 133-37.5E and
133-55E except Bisan Seto N traffic
route W of Takami Shima.
1555 Nagoya. RA 1665kHz,H3E;Ch.14, 11 Call Nagoya Harbor Radar. All vessels should report on entering
16,22. the Radar Service Area. Covers
Nagoya port, including its approaches.
1 - 22
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Rx Tx
1560 Tokyo Wan. RA 1665kHz,H3E;Ch.13, Call Tokyo MARTIS. All vessels over 100 GRT or carrying
14,16,22. more than 30 people should report
when entering the Radar Service
Area. Covers Tokyo Wan N of 35-10N.
1570 Kushiro. RA 2182,2150,2245, 10 Call Kushiro Harbor-Radar. Radar assistance provided within 2M
2394.5,2785.9kHz, of 42-58.0N 144-22.6E (within 10M for
H3E,J3E;Ch.14,16, 22. vessels over 1000 GRT).
NEW ZEALAND
1625 Auckland. RA 2182,2012kHz,H3E, J3E; 45 Provides vessel's range and bearing

Ch.12,16. from Signal Station (36-51S 174-49E)
in restricted visibility. Vessels over 100
NRT should make notification 24 hrs.
in advance of arrival.
1630 Otago Harbour. RA 2182,2012,2045,2129, 20 Call ZMH32 (Taiaroa Head). Provides range and bearing from
2162,4125,4417, Taiaroa Head Signal Station (0.1M S
6215,6224kHz,H3E, of lighthouse) in restricted visibility.
J3E;Ch.12,14,16. Vessels over 100 NRT should make
notification 72 hrs. in advance of
arrival, through Wellington (ZLW) or
Awarua (ZLB).
1635 Wanganui. RA 2012,2045,2162,2182, 20 Call Wanganui Harbour Radio Provides range and bearing from Pilot
4125,4417,6215, (ZMH211). Station (39-56.9S 174-59.5E).
6224kHz,H3E,J3E;
Ch.09,12,14,16,67, 69.
1640 Westport. RA 2012,2045,2162,2182, 15 Provides range and bearing from

4125,4417kHz,H3E, Signal Station (41-44.9S 171-35.7E) in
J3E;Ch.12,16. restricted visibility. Vessels should
make notification 12 hrs. in advance of
arrival.
AUSTRALIA
1665 Port Hedland. RA Ch.06,08,09,12,13, 16,67. 64 Provides range and bearing from
Control Tower (20-19.0S 118-34.5E).
All foreign vessels and Australian
vessels over 6500 GRT should make
notification 48 hrs. in advance of
arrival.
1675 Port Dampier. RA Ch.11,13,16,68,78, 79. Call Dampier Port Control. Provides range and bearing from Port
Ch.67(emergency). Control (20-37.2S 116-45.0E). All
vessels over 150 GRT should make
notification of arrival 72 hrs. in
advance (7 days for vessels arriving
from overseas.
1 - 23
(1) (2) (3) (4) (5) (6) (7) (8)

Rx Tx
UNITED STATES
United States VTS Vessel Movement Reporting System (VMRS) rules, VTS frequency monitoring requirements and General VTS
operating rules are mandatory for power-driven vessels 40 meters or more in length, vessels certificated to carry 50 or more
passengers for hire, and towing vessels 8 meters or more in length engaged in towing. VTS frequency monitoring requirements
and General VTS operating rules are mandatory for vessels covered by the Vessel Bridge-to-Bridge Radiotele- phone Act.
1720 New York, NY. RA Ch.11,12,13,14,16. Call New York Traffic. Vessels should make notification 15
mins. before navigating within the VTS
area and upon entering or getting
underway within the VTS area. Covers
the Upper New York Bay E to the
Brooklyn Bridge in the East River and
N to 40-43.7N and 74-01.6W in the
Hudson River, and includes the Kill
Van Kull S to the AK Railroad Bridge,
Newark Bay N to the Lehigh Valley
Draw Bridge, and portions of the
Lower New York Bay S to the entrance
buoys at Ambrose, Sandy Hook, and
Swash Channels.
1730 Berwick Bay, LA. RA Ch.11,13,16. Vessels should make notification 15

various Intracoastal Waterway Routes
converging at Berwick and Morgan
City.
1735 LOOP Deepwater RA Ch.10,16,74. Call LOOP Radar. Compulsory for all vessels; tankers
Port (Louisiana must report to COTP and Vessel
Offshore Oil Port). Traffic Supervisor 24 hrs. before
arrival. Covers vicinity of port
(28-53.2N 90-01.5W), anchorage and
safety fairway to SE and S.
NOTE: LOOP Deepwater Port is not a VTS.
1740 Houston-Galveston RA Ch.11,12,13,16. Call Houston Traffic. Vessels should make notification 15
, TX. mins. before navigating within the VTS
the Galveston Bay Channels and
Houston Ship Channel to the Houston
Turning Basin.
1750 San Francisco, CA. RA Ch.12,13,14,16. Call San Francisco Traffic. Vessels should make notification 15
the waters of San Francisco Bay and
its approaches S of 38N, E of
123-07W and N of 37-27N, and its
tributaries as far as Stockton and
Sacramento.
1760 Puget Sound, WA. RA Ch.05A,13,14,16. Call Seattle Traffic. Vessels should make notification 15
the Strait of Juan de Fuca E of
124-40W, Rosario Strait, the San Juan
Islands, Admiralty Inlet, and Puget
Sound.
NOTE: Puget Sound Vessel Traffic Service is one sector of a Cooperative Vessel Traffic Management System (CVTMS), which is a
joint U.S. and Canadian vessel traffic management effort. Canada administers the two remaining sectors of CVTMS.
1 - 24
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Rx Tx
1770 Prince William RA Ch.13,16. Call Valdez Traffic. Vessels should make notification 15
Sound, AK. mins. before navigating within the VTS
Prince William Sound North of Cape
Hinchinbrook, including Valdez Arm,
Valdez Narrows and Port Valdez.
COLOMBIA
1850 Puerto Covenas, RA Ch.10,13,16. Call FSU Covenas. Compulsory for all vessels. Vessels
Floating Storage should contact FSU 30M from terminal.
Unit.
CHILE
1895 Valparaiso. RA 2182,2738kHz,H3E, J3E; Call CBV 20 (Port Captain). Radar assistance provided on request
4143.6kHz,J3E; in fog.
Ch.09,14,16.
1900 Primera RA Ch.11,13,16,68. Eastbound vessels requiring Covers area between Banco Triton
Angostura. radar assistance should call and E approaches to the Strait of
Magallanes Zonal Radio Magellan.
(CBM), Ch.16, when abeam
Punta Arenas, or call CBM5
(Punta Delgada), Ch.68,11,13,
when 20M from Punta Baxa.
Westbound vessels should call
Magallanes 24 hrs. before
arrival at 52-35.0S 68-10.5W,
or call CBM71 (Punta
Dungeness), Ch.16, or CBM72
(Cabo Espiritu Santo), Ch.16,
when 20M from that point.
1 - 25
CHAPTER 2
RADIO TIME SIGNALS
200A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

200B. The United States System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
200C. The Old International (ONOGO) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
200D. The New International (Modified ONOGO) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
200E. The English System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
200F. The BBC System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
200G. Codes for the Transmission of UTC Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
200H. Shortwave Services Provided by the National Institute of Standards and
Technology WWV-WWVH Broadcasts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Station List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2-1
CHAPTER 2
RADIO TIME SIGNALS
200A. General except that there is no signal on the 29th second of any
minute, nor on certain seconds at the ends of the minutes,
The system of Coordinated Universal Time (UTC), as shown in the diagram.
described fully in “The American Practical Navigator” The dashes in the diagram indicate seconds on which
(Bowditch) (NVPUB9), came into use on 1 January 1972. signals are transmitted. The seconds marked “60” are the
Most countries have agreed to use the revised transmission zero seconds of the following minutes. The dash on the
procedures recommended by the the International beginning of the hour (shown as 59 minutes, 60 seconds) is
Telecommunications Union-Radiocommunications Sector much longer than the others.
(ITU-R). Users are advised that some stations not
specifically operating in the Standard Frequency and Time In all cases, the beginning of the dash indicates the
Signal Services may not be able to conform exactly to the beginning of the second; the end of the dash is without
current recommendations. significance.
Stations use various systems to broadcast time signals. Note that the number of dashes sounded in the group at
The more commonly used systems are described below the end of any minute indicates the number of minutes of
and referred to in the station listings at the end of this the signal yet to be sent.
chapter. Special systems are described under their
respective stations. 200C. The Old International (ONOGO) System
ACCURACY OF SIGNALS: The majority of radio time
signals are transmitted automatically and are referenced to The time signal is usually preceded by a preparatory
standards at the various national standards labs such as the signal, described where necessary in the station listings.
National Institute of Standards and Technology (NIST) in The signal itself is described in the following table. In
the U.S. Absolute reliance may be had in these signals; the transmission of the ONOGO signals, each dash (–) =1
they should be correct to 0.05 second. Some stations second and each dot (•) = 0.25 second.
transmit by a combination of manual and automatic
signals. Care should be exercised to differentiate between 200D. The New International (Modified ONOGO)
the two at the time of actual comparison to a chronometer. System
Other radio stations, however, have no automatic
transmission system installed. In this instance, the operator This is identical to the old system except that six dots are
is guided by the standard clock at the station. The clock is sent at the 55th through 60th seconds of each minute
checked by either astronomical observations or by reliable (instead of the old system of three 1 second dashes that
time signals. The hand transmission should be correct to commenced at the 55th, 57th, and 59th seconds), which
0.25 second. constitute the time signals.
STATIONS MUST AVOID INTERFERENCE: During
the transmission of time signals, stations are prohibited 200E. The English System
from making any transmissions which might interfere with
the reception of these signals. The time signal on the hour is preceded by 5 minutes of
HIGH PRECISION: For ordinary navigational purposes a preparatory signal consisting of a 0.1 second dot at each
no special precautions need be observed in receiving the second, 1 through 59, and a 0.4 second dash at each exact
signals other than to avoid those signals which are marked minute. The beginning of each dot or dash is the time
in the station schedule as unsatisfactory for navigational reference point.
purposes.
200F. The BBC System
200B. The United States System
The time signal on the hour is preceded by five 0.1
The transmission of signals begins at 55 minutes, 0 second dots sent at seconds 55 through 59. The hour
seconds of a given hour and continues for 5 minutes. marker is a 0.5 second dash. The beginning of each dot or
Signals are transmitted on every second during that time, dash is the time reference point.
2-3
RADIO TIME SIGNALS
The United States System

Minute Second
50 51 52 53 54 55 56 57 58 59 60
55 – – – – – –
56 – – – – – –
57 – – – – – –
58 – – – – – –
59 – —
Old International (ONOGO) System

Signal Times Morse Symbols
m. s. m. s.
Letter X sent once 57 00 to 57 49 –••– –••– –••– –••– –••–
every 10 seconds
Letter O 57 55 to 58 00 – – –
Letter N sent once 58 08 to 58 10 –• –• –• –• –•
every 10 seconds
Letter O 58 55 to 59 00 – – –
Letter G sent once 59 06 to 59 10 ––• ––• ––• ––• ––•
every 10 seconds
Letter O 59 55 to 60 00 – – –
New International (Modified ONOGO) System
Signal Times Morse Symbols

m. s. m. s.
Letter X sent once 57 00 to 57 49 –••– –••– –••– –••– –••–
every 10 seconds
Six dots 57 55 to 58 00 ••••••
Letter N sent once 58 08 to 58 10 –• –• –• –• –•
every 10 seconds
Six dots 58 55 to 59 00 ••••••
Letter G sent once 59 06 to 59 10 ––• ––• ––• ––• ––•
every 10 seconds
Six dots 59 55 to 60 00 ••••••
The English System

Seconds:
M. 1-59 60
55 • • • • • • • • • • • • • • • • • • • • • • • • • • • ••••••• • • • • • • • • • • • • • • • • • • • • • • • • • –
56 • • • • • • • • • • • • • • • • • • • • • • • • • • • ••••••• • • • • • • • • • • • • • • • • • • • • • • • • • –
57 • • • • • • • • • • • • • • • • • • • • • • • • • • • ••••••• • • • • • • • • • • • • • • • • • • • • • • • • • –
58 • • • • • • • • • • • • • • • • • • • • • • • • • • • ••••••• • • • • • • • • • • • • • • • • • • • • • • • • • –
59 • • • • • • • • • • • • • • • • • • • • • • • • • • • ••••••• • • • • • • • • • • • • • • • • • • • • • • • • • –
The BBC System

minute seconds 1-54 55 56 57 58 59 60
59 (silence) • • • • • –
2-4
RADIO TIME SIGNALS
200G. Codes for the Transmission of UTC Time signal emissions of Russia follow this system;
Adjustments additionally, they carry a similar coding of seconds 21 to
24 or 31 to 34. The extra coding indicates a further figure
Currently the rate of departure between UTC and (known as dUT1) to be added to the DUT1 value; the total
Greenwich mean time (UT1), used in celestial navigation, value of the UT1 - UTC corrections being DUT1 + dUT1.
is 2.5 milliseconds a day. However, it is planned that UTC Each emphasized second represents a dUT1 value of 0.02
will not normally deviate from UT1 by more than 0.9 second.
seconds. Provision has been made to maintain this
relativity by means of step adjustments to the time signals Positive values of dUT1 are indicated by emphasizing a
of exactly 1 second. These adjustments, known as leap number of consecutive second markers from seconds 21
seconds, will normally be effected at 2400 on 30 June or through 24.
31 December. (A positive leap second begins at 23 hours, Negative values of dUT1 are indicated by emphasizing a
59 minutes, 60 seconds, ending at 0 hours, 0 minutes, 0 number of consecutive second markers from seconds 31
seconds of the first day of the following month. For a through 34.
negative leap second, 23 hours, 59 minutes, 58 seconds A zero value of dUT1 is indicated by the absence of
will be followed one second later by 0 hours, 0 minutes, 0 emphasized second markers.
seconds of the first day of the following month.)
However, it is also quite possible that these dates may be Time signals originating from Russia will also include a
varied depending upon any unpredicted variations in the Morse code transmission of DUT1 + dUT1. The
earth’s rate of rotation. information is broadcast by means of a three digit group.
The difference between UTC and UT1 is known as D The first number indicates the sign of the difference (1
(for delta) UT1, the relationship being DUT1 = UT1 - means a positive value and 0 means a negative value). The
UTC. By means of a coding system incorporated in the two numbers following give the absolute value (e.g., 072 =
actual emissions, primary time signal sources will -0.72 second; 128 = +0.28 second). The numbers are
promulgate DUT1 in integral multiples of 0.1 second. transmitted with an interval corresponding to the length of
In most cases the coding will be in the form of a ITU-R three dashes (approximately 0.9 second).
code with emphasized second markers in the first 16 The information is repeated 10 to 15 times during 1
seconds following the minute marker. The emphasis of the minute, each group of three digits being separated from
second markers can take the form of lengthening, each other by a separation marker ( • – • ).
doubling, splitting or tone modulating of the normal DUT1 may also be given by voice announcement or in
second markers. Each emphasized second represents a Morse code. For example, U.S. Naval Radio Stations use
DUT1 value of 0.1 second, the total value of DUT1 being standard Morse code from seconds 56 through 59 each
indicated by the number of emphasized seconds. The sign minute (not used for time signals) to indicate the sign and
of DUT1 is determined by the position of the coded signals value in tenths of a second of DUT1.
within the 16 second period, positive values being Positive values will be indicated by the letter “A” and the
indicated by emphasis of the first 8 seconds and negative appropriate digit (e.g., • – • • • – – “A3”: add 0.3 second).
values being indicated by emphasis of seconds 9 to 16. Negative values will be indicated by the letter “S” and
A zero value of DUT1 will be indicated by the absence the appropriate digit (e.g., • • • – – – – • “S9”: subtract
of emphasized second markers. 0.9 second).
EXAMPLES:
2-5
RADIO TIME SIGNALS
EXAMPLES:
200H. Shortwave Services Provided by the announcement occurs first, at 15 seconds before the
National Institute of Standards and minute, while the WWV announcement occurs at 7.5
Technology WWV-WWVH Broadcasts seconds before the minute. Coordinated Universal Time is
used in these announcements.
SHORTWAVE SERVICES: NIST broadcasts time
signals continuously from the two high-frequency STANDARD TIME INTERVALS: The most frequent
(shortwave) radio stations WWV, near Fort Collins, sounds heard on WWV and WWVH are the pulses that
Colorado, and WWVH, Kekaha, Kauai, Hawaii on mark the seconds of each minute, except for the 29th and
frequencies of 2.5, 5, 10, and 15 MHz (also 20 MHz from 59th second pulses which are omitted completely. The first
Fort Collins only). All frequencies provide the same pulse of every hour is an 800-ms pulse of 1500 Hz. The
information. Services include time announcements, first pulse of every minute is an 800-ms pulse of 1000 Hz
standard time intervals, standard frequencies, UT1 time at WWV and 1200 Hz at WWVH. The remaining second
corrections, BCD time code, geophysical alerts, marine pulses are brief audio bursts (5-ms pulses of 1000 Hz at
storm warnings, and GPS navigation system status WWV and 1200 Hz at WWVH) that resemble the ticking
information. The accompanying diagrams give the hourly of a clock. Each pulse commences at the beginning of each
broadcast schedules of WWV and WWVH. Station second. They are given by means of double-sideband
locations, radiated power, and details of antennas and amplitude modulation.
modulation are given in the station listings which follow. Each second’s pulse is preceded by 10 ms of silence and
The NIST also broadcasts time and frequency signals from followed by 25 ms of silence to avoid interference which
its low frequency station, WWVB, also located at Fort might make it difficult or impossible to pick out the pulses.
Collins, Colorado, and from two geostationary GOES
satellites. STANDARD AUDIO FREQUENCIES: In alternate
The NIST Time and Frequency Division is internet minutes during most of each hour, 500 or 600 Hz audio
accessible through the World Wide Web at: tones are broadcast. A 440 Hz tone, the musical note A
http://www.boulder.nist.gov/timefreq/index.html above middle C, is broadcast once each hour. In addition to
ACCURACY AND STABILITY: The time and being a musical standard, the 440 Hz tone can be used to
frequency broadcasts are controlled by the NIST provide an hourly marker for chart recorders or other
Frequency Standard, which realizes the internationally automated devices.
defined cesium resonance frequency with an accuracy of 1
part in 1014. The frequencies as transmitted by WWV and “SILENT” PERIODS: These are periods with no tone
WWVH are accurate to about 1 part in 100 billion (1 x modulation. However, the carrier frequency, second pulses,
10-11) for frequency and about 0.01 millisecond (ms) for time announcements, and 100 Hz BCD time code continue.
timing. The day-to-day deviations are normally less than 1 The main silent periods extend from 43 to 46 and from 47
part in 1,000 billion (1 x 10-12). However, the received to 52 minutes after the hour on WWV and from 8 to 11 and
accuracy is far less due to various propagation effects from 14 to 20 minutes after the hour on WWVH. Minutes
(Doppler effect, diurnal shifts, etc.) that cause fluctuations 29 and 59 on WWV and minutes 00 and 30 on WWVH are
in the carrier frequencies. The usable received accuracy is also silent.
about 1 part in 10 million (1 x 10-7) for frequency and BCD TIME CODE: A modified IRIG-H time code
about 1 ms for timing. occurs continuously on a 100 Hz subcarrier. The format is
TIME ANNOUNCEMENTS: Once per minute, voice 1 pulse per second with a 1 minute time frame. It gives
announcements are made from WWV and WWVH. The year (2 digits), day of the year, hours, and minutes in
two stations are distinguished by a female voice from binary coded decimal form. Indicators for daylight saving
WWVH and a male voice from WWV. The WWVH time and leap seconds are also included in the code.
2-6
RADIO TIME SIGNALS
UT1 TIME CORRECTIONS: The UTC time scale Condition Range of A-index Typical K-indices
operates on atomic frequency, but by means of resets is
Quiet 0 ≤ A < 08 usually no K
made to approximate the astronomical UT1 scale. It may
indices > 2
disagree with UT1 by as much as 0.9 second before resets
Unsettled 08 ≤ A < 16 usually no K
in steps of exactly 1 second are made. For those who need
indices > 3
astronomical time more accurate than 0.9 second, a UTC
Active 16 ≤ A < 30 a few K indices of
correction is applied through the ITU-R code described
4
earlier, using double ticks as emphasized markers.
Minor storm 30 ≤ A < 50 K indices mostly 4
and 5
GEOPHYSICAL ALERTS: Current geophysical alerts
Major storm 50 ≤ A < 100 some K indices 6
(Geoalerts) are broadcast in voice at 18 minutes after the
or greater
hour (for WWV) and at 45 minutes after the hour (for
Severe storm 100 ≤ A some K indices 7
WWVH). The messages are less than 45 seconds in length
or greater
and are updated every three hours, i.e., 0000, 0300, 0600
UTC, etc. Part A of the message gives the solar-terrestrial Solar Flares are classified by their x-ray emission as:
indices for the day: specifically the 2000 UTC solar flux
from Penticton, B.C., Canada at 2800 MHz, the estimated Peak Flux Range (0.1 - 0.8 nm)
A-index for Boulder, CO and the current Boulder K-index.
Part B gives the solar-terrestrial conditions for the previous
24 hours. Part C gives optional information on current Class mks system (Wm-2) cgs system (erg cm-2s-1)
conditions that may exist (that is, major flares, proton or
A f < 10-7 f < 10-4
polar cap absorption [PCA] events, or stratwarm
conditions). Part D gives the expected conditions for the B 10-7 ≤ f < 10-6 10-4 ≤ f < 10-3
next 24 hours. For example:
C 10-6 ≤ f < 10-5 10-3 ≤ f < 10-2
A) Solar-terrestrial indices for 26 October follow:
Solar flux 173 and estimated Boulder A-index 20, M 10-5 ≤ f < 10-4 10-2 ≤ f < 10-1
repeat: Solar flux one-seven-three and estimated Boulder
A-index two-zero. X 10-4 ≤ f 10-1 ≤ f
The Boulder K-index at 1800 UTC on 26 October was
four, repeat: four. The letter designates the order of magnitude of the peak
B) Solar-terrestrial conditions for the last 24 hours value. Following the letter the measured peak value is
follow: given. For descriptive purposes, a number from 1.0 to 9.9
Solar activity was high. is appended to the letter designation. The number acts as a
Geomagnetic field was unsettled to active. multiplier. For example, a C3.2 event indicates an x-ray
C) A major flare occurred at 1648 UTC on 26 October. A burst with peak flux of 3.2 x 10-6 Wm-2.
satellite proton event and PCA are in progress. Forecasts are usually issued only in terms of the broad C,
D) The forecast for the next 24 hours follows: M, and X categories. Since x-ray bursts are observed as a
Solar activity will be moderate to high. The full-sun value, bursts below the x-ray background level are
geomagnetic field will be active. not discernible. The background drops to class A level
during solar minimum; only bursts that exceed B1.0 are
Solar activity is defined as transient perturbations of the classified as x-ray events. During solar maximum the
solar atmosphere as measured by enhanced x-ray emission, background is often at the class M level, and therefore
typically associated with flares. Five standard terms are class A, B, or C x-ray bursts cannot be seen. Data are from
used to describe solar activity: the NOAA GOES satellites, monitored in real time by the
Space Weather Operations (SWO) branch at the Space
- Very low: x-ray events less than C-class. Environment Center (SEC). Bursts greater than 1.2 x
- Low: C-class x-ray events. 10-3Wm-2 may saturate the GOES detectors. If saturation
- Moderate: isolated (one to four) M-class x-ray occurs, estimated peak flux values are reported.
events. The remainder of the report is as follows:
- High: several (five or more) M-class x-ray – MAJOR SOLAR FLARE: a flare which produces some
events, or isolated (one to four) M5 or geophysical effect; usually flares that have x-rays ≥ M5
greater x-ray events. class.
- Very High: several M5 or greater x-ray events. – PROTON FLARE: protons detected by satellite detectors
(or polar cap absorption by riometer) have been observed
The geomagnetic field experiences natural variations in time association with H-alpha flare
classified quantitatively into six standard categories – SATELLITE LEVEL PROTON EVENT: proton
depending upon the amplitude of the disturbance. The enhancement detected by Earth orbiting satellites with
Boulder K and estimated A indices determine the category measured particle flux of at least 10 protons cm-2s-1ster-1
according to the following table: at ≥ 10 MeV.
2-7
RADIO TIME SIGNALS
– SATELLITE LEVEL PROTON EVENT: proton “North Atlantic weather west of 35 West at 1700 UTC:
enhancement detected by Earth orbiting satellites with Hurricane Donna, intensifying, 24 North, 60 West, moving
measured particle flux of at least 10 protons cm-2s-1ster-1 northwest, 20 knots, winds 75 knots; storm, 65 North, 35
at ≥ 10 MeV. West, moving east, 10 knots; winds 50 knots, seas 15 feet.”
– POLAR CAP ABSORPTION: proton-induced Information regarding these announcements may be
absorption ≥2 dB during the daytime, 0.5 dB at night, as obtained from:
measured by a 30 MHz riometer located within the polar
ice cap. METEOROLOGICAL OPERATIONS DIVISION
– STRATWARM: reports of stratospheric warming in the MARINE FORECAST BRANCH
high latitude regions of the winter hemisphere of the NATIONAL METEOROLOGICAL CENTER
earth associated with gross distortions of the normal 5200 AUTH ROAD
circulation associated with the winter season. CAMP SPRINGS MD 20746
The Geophysical Alert messages are also available by
dialing: (1) 303-497-3235. or:
Inquiries regarding these messages should be addressed MARINE AND APPLIED SCIENCES BRANCH
to: NATIONAL WEATHER SERVICE
1325 EAST WEST HIGHWAY
SPACE WEATHER OPERATIONS SILVER SPRING MD 20910
NOAA
325 BROADWAY R/E/SE GLOBAL POSITIONING SYSTEM (GPS) STATUS
BOULDER CO 80303-3328 ANNOUNCEMENTS: Since March 1990 the U.S. Coast
Guard has sponsored two voice announcements each hour
Telephone: (1) 303-497-5127. on both WWV and WWVH. These give current
Fax: (1) 303-497-3137. information about GPS Satellites and related operations.
The announcements are at 14 through 15 minutes after the
The Space Environment Center (SEC) provides real-time hour on WWV and at 43 through 44 minutes after the hour
monitoring and forecasting of solar and geophysical on WWVH. For further information contact:
events, conducts research in solar-terrestrial physics, and
develops techniques for forecasting solar and geophysical COMMANDING OFFICER
disturbances. Information on SEC products and data is U.S. COAST GUARD NAVIGATION CENTER
internet accessible through the World Wide Web at: 7323 TELEGRAPH ROAD
http://www.sec.noaa.gov ALEXANDRIA VA 22315-3998
PROPAGATION FORECASTS: Users interested in Telephone: (1) 703-313-5900.

further reading material on the effect of solar and Fax: (1) 703-313-5920.
geophysical activity on radio propagation should consult
the latest edition of the Amateur Radio Handbook, The Navigation Information Service (NIS) is internet
published by the American Radio Relay League. accessible through the U.S. Coast Guard Navigation
MARINE STORM WARNINGS: Weather information Center Website at:
about major storms in the Atlantic and eastern North http://www.navcen.uscg.gov/
Pacific are broadcast in voice from WWV at 8 through 10 http://www.navcenter.org (Mirror site)
minutes after each hour. Similar storm warnings covering
the eastern and central North Pacific are given from WWVB: This station (located at 40˚40'28.3"N,
WWVH at 48 through 51 minutes after each hour. An 105˚02'39.5"W; radiated power 13 kW) broadcasts on 60
additional segment (at 11 minutes after the hour on WWV kHz. Its time scale is the same as for WWV and WWVH,
and at 52 minutes on WWVH) may be used when there are and its frequency accuracy and stability as transmitted are
unusually widespread storm conditions. The brief the same. Its entire format consists of a 1 pulse per second
messages are designed to tell mariners of storm threats in special binary time code giving minutes, hours, days, the
their areas. If there are no warnings in the designated areas, current year (two digits), and the correction between its
the broadcasts will so indicate. The ocean areas involved UTC time scale and UT1 astronomical time. Indicators for
are those for which the U.S. has warning responsibility daylight saving time, leap seconds, and leap year are also
under international agreement. The regular times of issue included. Identification of WWVB is made by its unique
by the National Weather Service are 0500, 1100, 1700, and time code and a 45˚ carrier phase shift which occurs for the
2300 UTC for WWV and 0000, 0600, 1200, and 1800 period between 10 minutes and 15 minutes after each hour.
UTC for WWVH. These broadcasts are updated effective The useful coverage area of WWVB is within the
with the next scheduled announcement following the time continental United States. Propagation fluctuations are
of issue. much less with WWVB than with high frequency
Mariners might expect to receive a broadcast similar to reception, permitting frequency comparisons to be made to
the following: a few parts in 1011per day.
2-8
RADIO TIME SIGNALS
2-9
The hourly broadcast schedules of WWV.

RADIO TIME SIGNALS
2 - 10
The hourly broadcast schedules of WWVH.

RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

No. Name Hours of Transmission System Frequency
UNITED STATES
The United States Frequency and Time Standard is maintained by the Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO.
Services include time announcements, standard time intervals, standard frequencies, geophysical alerts, marine storm warnings, Global Positioning System (GPS)
information, UT1 time corrections and BCD Time Codes.
2000 Fort Collins, CO (WWV). Continuous. U.S. 2.5 MHz, A9W, 2.5 kW;
5.0 MHz, A9W, 10.0 kW;
10.0 MHz, A9W, 10.0 kW;
15.0 MHz, A9W, 10.0 kW;
20.0 MHz, A9W, 2.5 kW.
2001 Kekaha, Kauai, HI (WWVH). Continuous. U.S. 2.5 MHz, A9W, 5.0 kW;
5.0 MHz, A9W, 10.0 kW;
10.0 MHz, A9W, 10.0 kW;
15.0 MHz, A9W, 10.0 kW.
ANTENNAS MODULATION: At both WWV and WWVH, double sideband amplitude modulation is employed with 50 percent modulation on steady tones, 25 percent for the
BCD Time Code, 100 percent for second pulses and 75 percent for voice. The broadcasts on 5, 10 and 15 MHz from WWVH are phased from vertical half-wave dipole arrays.
They are designed and oriented to radiate a cardioid pattern directing maximum gain in a westerly direction. The 2.5 MHz antenna at WWVH and all antennas at WWV are
half-wave dipoles that radiate omnidirectional patterns.
CANADA
2020 Ottawa, Ont. (CHU). Continuous. (See below) 3330 kHz, A2A, H3E, 3 kW;
7335 kHz, A2A, H3E, 10 kW;
14670 kHz, A2A, H3E, 3 kW.
DUT1: Marked seconds indicated by split pulses.

SYSTEM: 00s.: 500ms second marker. From 01s. to 28s.: Second markers of 300ms each. 29s.: Silence. From 30s. to 50s.: Second markers of 300ms each. From 51s. to
59s.: Station identification and time (+5R). At the beginning of the hour the first second marker lasts for 1s. and 500ms markers for seconds 01 to 09 are omitted. A binary
time code is included in second markers 31-39.
ANTENNAS: CHU broadcasts from 45-17-47N 75-45-22W using vertical antennas designed to give the best possible coverage for Canadian users.
MEXICO
2040 Chapultepec (XDD)(XDP). Weekdays: 0155-0200, 1555-1600, 1755-1800; U.S. XDP: 4800 kHz, A1A;
Sun. and holidays: 1755-1800. XDD: 13043 kHz, A1A.
SYSTEM: From 54m. to 55m.: “VVV DE” station call sign (“XPD” or “XDD”). From 55m. to 60m.: U.S. system, except that the second marker at 28s. is omitted each minute.
2041 Tacubaya (XBA). Weekdays: 0155-0200, 1555-1600, 1755-1800; U.S. 6976.74 kHz, A1A;
Sun. and holidays: 1755-1800. 13953.6 kHz, A1A.
SYSTEM: From 54m. to 55m.: “VVV DE XBA”. From 55m. to 60m.: U.S. system, except that the second marker at 28s. is omitted each minute.
VENEZUELA
2043 Observatorio Naval Caracas (YVTO). Continuous. U.S. 5000 kHz, A9W, 10 kW.
SYSTEM: From 01s. to 29s.: second markers of 100ms each. 30s.: silence. From 31s. to 40s.: second markers of 100ms each. From 40s. to 50s.: station identification, in
Spanish. 51s. and 52s.: second markers of 100ms each. From 52s. to 57s.: time announcement, in Spanish. 57s. and 59s.: second markers of 100ms each. 00s.: minute
marker of 500ms (800 Hz). Second markers are 1000 Hz tone.
BRAZIL
2050.5 Rio de Janeiro (PPEI). 0025-0030, 1125-1130, 1325-1330, 1925-1930, English 8721 kHz, A1A, 2 kW.
2325-2330.
DUT1: Marked seconds indicated by double pulse.
ECUADOR
2051 Guayaquil (HD210A). 0000-1200. (See below) 3810 kHz, A1A, A3E, 1 kW.
1200-1300. 5000 kHz, A1A, A3E, 1 kW.
1300-2400. 7600 kHz, A1A, A3E, 1 kW.
SYSTEM: 00s.: minute marker of 300ms. From 01s. to 28s.: second markers of 100ms each. 29s.: silence. From 30s. to 50s.: second markers of 100ms each. From 50s.
to 52s.: silence. From 52s. to 58s.: time announcement. 59s.: silence. Call sign transmitted on 3810 kHz, 7600 kHz from 59m.-15s. to 59m.-50s. of each hour. In addition to
time signals on 5000 kHz, a 600 Hz tone is transmitted 1200-1215 and a 400 Hz tone is transmitted 1215-1230.
2 - 11
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

ARGENTINA
2080 Buenos Aires (LOL). 0055-0100, 1255-1300, 2055-2100. (See below) 4856 kHz, A1A;
8030 kHz, A1A;
17180 kHz, A1A.
1100-1200, 1400-1500, 1700-1800, 2000-2100, 5000 kHz, A1A, A2A, A3E, 2 kW;
2300-2400. 10000 kHz, A1A, A2A, A3E, 2 kW;
15000 kHz, A1A, A2A, A3E, 2 kW.
A1A-ONLY FREQUENCIES:
SYSTEM: English. The marker at 29s. is omitted each minute.
OTHER FREQUENCIES:
DUT1: Marked seconds indicated by lengthened signal.
SYSTEM: From 01s. to 58s.: second markers of 5ms each. 59s.: silence. 00s.: minute marker of 5ms.
CARRIER MODULATION: From 00m. to 03m., 10m. to 13m., 20m. to 23m., 30m. to 33m., 40m. to 43m., 50m. to 53m.: 1000 Hz tone. From 03m. to 05m., 08m. to 10m.,
13m. to 15m., 18m. to 20m., 23m. to 25m., 28m. to 30m., 33m. to 35m., 38m. to 40m., 43m. to 45m., 48m. to 50m., 53m. to 55m., 58m. to 60m.: “LOL” in morse code, station
identification and time (+3P) in voice. From 05m. to 08m., 15m. to 18m., 25m. to 28m., 35m. to 38m., 45m. to 48m.: 440 Hz tone.
2081 Buenos Aires (LQB)(LQC). 2200-2205, 2345-2350. (See below) LQB9: 8167.5 kHz, A2A, A3E, 10 kW.
1000-1005, 1145-1150. LQC20: 17550 kHz, A2A, A3E, 10 kW.

SYSTEM: From 55m. to 00m./40m. to 45m.: “CQCQCQ DE” followed by call sign (“LQB” or “LQC”) repeated three times. From 00m. to 05m./45m. to 50m.: second markers
of 300ms each (except omitted on 59s. of each minute); minute markers of 500ms each. After 05m./50m., “OKOKOK” is broadcast if time signals were valid, “NVNVNV” if
invalid.
CZECH REPUBLIC
2091 Liblice (OMA). Continuous. (See below) 50 kHz, A1A, 7 kW.
50 kHz FREQUENCY:
SYSTEM: Carrier interruptions of 100ms each second, 500ms each minute.
TRANSMITTER: Backup transmitter, 0.05kW, used 0600-1200 first Wed. each month.
BELARUS
2150 Molodechno (RJH69). Daylight savings time in effect: (See below) 25 kHz, A1A, 300 kW.
0836-0855, 2136-2155;
Daylight savings time not in effect:
0736-0755, 1936-1955.
Not transmitted on 2nd, 12th, 22nd of each

month.
SYSTEM: From 36m. to 37m.: call sign. From 37m. to 40m.: carrier. From 40m. to 43m.: sub-second markers of 12.5ms every 25ms. From 43m. to 52m.: sub-second markers
of 25ms every 100ms; second markers of 100ms each; 10-second markers of 1s. each; minute markers of 10s. each. From 52m. to 55m.: sub-second markers of 12.5ms
every 25ms.
RUSSIA
2202 Moskva (RWM). Continuous. (See below) 4996 kHz, A1A, 5 kW;
9996 kHz, A1A, 5 kW;
14996 kHz, A1A, 8 kW.
DUT1 AND dUT1: Marked seconds indicated by double pulse with 100ms separation, between 10m.-20m. and 40m.-50m.
SYSTEM: From 00m. to 08m.: carrier. From 08m. to 09m.: silence. From 09m. to 10m.: call sign. From 10m. to 20m.: second markers of 100ms each, minute markers of
500ms each. From 20m. to 30m.: sub-second markers of 20ms every 100ms, second markers of 40ms each, minute markers of 500ms each. From 30m. to 38m.: carrier.
From 38m. to 39m.: silence. From 39m. to 40m.: call sign. From 40m. to 50m.: second markers of 100ms each, minute markers of 500ms each. From 50m. to 00m.: sub-
second markers of 20ms every 100ms, second markers of 40ms each, minute markers of 500ms each. Markers omitted between 56s. and 59s. at 14m., 19m., 24m., 29m.,
44m., 49m., 54m., 59m.
TRANSMITTERS: 4996 kHz off-air 0500-1300 first Wed. each quarter. 9996 kHz off-air 0500-1300 second Wed. each quarter. 14996 kHz off-air 0500-1300 third Wed. every
odd month.
2202.5 Moskva (RBU). January-June: 0252-0313, 0852-0913, (See below) 66.67 kHz, A1A, 10 kW.
1452-1513, 2052-2113;
July-December: 0852-0913, 2052-2113.
DUT1 AND dUT1: Marked seconds indicated by double pulse with 100ms separation, between 00m.-05m.
SYSTEM: From 52m. to 59m.: carrier. From 59m. to 00m.: sub-second markers of 20ms every 100ms, second markers of 40ms, minute markers of 500ms each. From 00m.
to 05m.: second markers of 100ms each, minute markers of 500ms each. From 05m. to 06m.: call sign. From 06m. to 13m.: carrier.
TRANSMITTER: Off-air 0500-1300 third Tues. each month.
2 - 12
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

2203 Gorky (RJH99). Daylight savings time in effect: (See below) 25 kHz, A1A, 300 kW.
0736-0755, 1436-1455, 1936-1955;
0536-0555, 1336-1355, 1836-1855.
Not transmitted on 8th, 18th, 28th of each month.
of 25ms every 100ms, second markers of 100ms each, 10-second markers of 1s. each, minute markers of 10s. each. From 52m. to 55m.: sub-second markers of 12.5ms
every 25ms.
2204 Novosibirsk (RTA). 0000-0530, 1400-2400. (See below) 10000 kHz, A1A, 5 kW.
0630-1330. 15000 kHz, A1A, 5 kW.
Transmission times 1 hr. later on both

frequencies when daylight savings time in effect.
SYSTEM: From 00m. to 10m.: second markers of 100ms each, minute markers of 500ms each. From 10m. to 20m.: sub-second markers of 20ms every 100ms, second
markers of 40ms each, minute markers of 500ms each. From 20m. to 28m.: carrier. From 28m. to 29m.: silence. From 29m. to 30m.: call sign. From 30m. to 40m.: second
markers of 100ms each, minute markers of 500ms each. From 40m. to 50m.: sub-second markers of 20ms every 100ms, second markers of 40ms each, minute markers of
500ms each. From 50m. to 58m.: carrier. From 58m. to 59m.: silence. From 59m. to 00m.: call sign. Markers omitted between 56s. and 59s. at 04m., 09m., 14m., 19m.,
34m., 39m., 44m., 49m.
TRANSMITTERS: Both frequencies off-air 0000-1000 first and third Thurs. each month.
2205 Irkutsk (RID). Continuous. (See below) 5004 kHz, A1A, 1 kW;
10004 kHz, A1A, 1 kW;
15004 kHz, A1A, 1 kW.
SYSTEM: From 00m. to 10m.: sub-second markers of 20ms every 100ms, second markers of 40ms each, minute markers of 500ms each. From 10m. to 18m.: carrier. From
18m. to 19m.: silence. From 19m. to 20m.: call sign. From 20m. to 30m.: second markers of 100ms each, minute markers of 500ms each. From 30m. to 40m.: sub-second
markers of 20ms every 100ms, second markers of 40ms each, minute markers of 500ms each. From 40m. to 48m.: carrier. From 48m. to 49m.: silence. From 49m. to 50m.:
call sign. From 50m. to 00m.: second markers of 100ms each, minute markers of 500ms each. Markers omitted between 56s. and 59s. at 04m., 09m., 24m., 29m., 34m.,
39m., 54m., 59m.
TRANSMITTERS: 5004, 15004 kHz off-air 0000-0800 second Tues. and third Sun. each month. 10004 kHz off-air 0000-0800 third Tues. and third Sun. each month.
2205.5 Irkutsk (RTZ). 0000-2100, 2200-2400. (See below) 50 kHz, A1A, 10 kW.
DUT1 AND dUT1: Marked seconds indicated by double pulse with 100ms separation, between 00m.-05m.
SYSTEM: From 00m. to 05m.: second markers of 100ms each, minute markers of 500ms each. From 05m. to 06m.: call sign. From 06m. to 59m.: carrier. From 59m. to
00m.: sub-second markers of 20ms every 100ms, second markers of 40ms each, minute markers of 500ms each.
TRANSMITTER: Transmitter off-air 0000-0800 first, third, fourth Mon. each month.
2206 Khabarovsk (UQC3). Daylight savings time in effect: (See below) 25 kHz, A1A, 300 kW.
0236-0255, 0636-0655, 1836-1855;
0036-0055, 0636-0655, 1736-1755.
Not transmitted on 10th, 20th, 30th of each

month.
every 25ms.
2209 Arkhangel'sk (RJH77). 0836-0855, 1136-1155; 1 hr. later when daylight (See below) 25 kHz, A1A, 300 kW.
savings time in effect.
every 25ms.
KYRGYZSTAN
2211 Frunze (RJH66). Daylight savings time in effect: (See below) 25 kHz, A1A, 300 kW.
0536-0555, 1136-1155, 2336-2355;
0436-0455, 0936-0955, 2136-2155.
every 25ms.
2 - 13
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

UZBEKISTAN
2212 Tashkent (ULW4). 0000-0400, 0500-2400. (See below) 2500 kHz, A1A, 1 kW.
0000-0400, 1400-2400. 5000 kHz, A1A, 1 kW.
0500-1330. 10000 kHz, A1A, 1 kW.
1 hr. later when daylight savings time in effect.
DUT1 AND dUT1: Marked seconds indicated by double pulses with 100ms separation, between 00m.-10m. and 30m.-40m.
SYSTEM: From 00m. to 10m.: second markers of 100ms each, minute markers of 500ms each. From 10m. to 20m.: sub-second markers of 20ms every 100ms, second
markers of 40ms each, minute markers of 500ms each. From 20m. to 28m.: carrier. From 28m. to 29m.: silence. From 29m. to 30m.: call sign. From 30m. to 40m.: second
markers of 100ms each, minute markers of 500ms each. From 40m. to 50m.: sub-second markers of 20ms every 100ms, second markers of 40ms each, minute markers of
500ms each. From 50m. to 58m.: carrier. From 58m. to 59m.: silence. From 59m. to 00m.: call sign. Markers between 56s. and 59s. omitted at 04m., 09m., 14m., 19m.,
34m., 39m., 44m., 49m.
TRANSMITTERS: All off-air 0100-1100 third Mon. each month.
GERMANY
2320 Mainflingen (DCF77). Continuous. (See below) 77.5 kHz, A1A, A3E, 38 kW.
SYSTEM: Carrier interruptions act as second markers. From 00s. to 19s.: second markers of 100ms each. 20s.: second marker of 200ms. From 21s. to 27s.: second markers
of 100ms or 200ms each; these markers are used to send binary time code information. 100ms marker—binary 0, 200ms marker—binary 1. 28s.: second marker of 100ms.
From 29s. to 34s.: binary second markers of 100ms or 200ms each. 35s.: second marker of 100ms. From 36s. to 57s.: binary second markers of 100ms or 200ms each.
58s.: second marker of 100ms. 59s.: uninterrupted carrier. Station call sign transmitted twice using audio modulation of the carrier at 19m., 39m., 59m.; second markers are
not interrupted.
ANTENNAS: When backup antenna is used, marker at 15s. is lengthened.
UNITED KINGDOM
2351 Rugby (MSF). Continuous. (See below) 60 kHz, A1A, 27 kW.
SYSTEM: National Physical Laboratory (NPL) Computer Time Service via Modem (NPL Truetime). NPL offers a service which allows a computer to set its clock to within
1/50th of a second by direct telephone connection to the National Time Scale at the NPL in Teddington, Middlesex. A call to the service, at any time of the day or night, allows
a computer equipped with a suitable modem and software to correct its clock. The service uses a premium-rate telephone number. For further information contact the Time
and Frequency Services, NPL at:
Inquiries telephone.....(011) 44-01819436880
NPL Truetime Telephone.....0891 516333 (UK only)
Fax.....(011) 44-01819436458
E-mail.....time@npl.co.uk
Internet.....http://www.npl.co.uk/npl/ctm/index.html
TRANSMITTER: Transmitter off-air 1000-1400 (1 hr. earlier when daylight savings time is in effect) first Tues. each month.
2360 BBC-Radio 1. Mon.-Fri.: 0700, 0800; (See below) 1053 kHz, A3E, 1-150 kW;
Sat.: 1300; 1089 kHz, A3E, 1-150 kW;
Sun.: Nil. 97.6-99.8 MHz, F3E (97.1 MHz for Channel
Islands).
1 hr. earlier when daylight savings time in effect.
SYSTEM: From 59m.-55s. to 59m.-59s.: second markers of 100ms each. 00m.-00s.: minute marker of 500ms.
2361 BBC-Radio 2. Mon.-Fri.: 0000, 0700, 0800, 1300, 1700; (See below) 88-90.2 MHz, F3E (89.6 MHz for Channel Islands).
Sat.: 0000, 0700, 0800;
Sun.: 0000, 0800, 0900, 1900.
SYSTEM: From 59m.-55s. to 59m.-59s.: second markers of 100ms each. 00m.-00s.:

minute marker of 500ms.
2362 BBC-Radio 3. Mon.-Fri.: 0700, 0800; (See below) 90.2-92.4 MHz, F3E (91.1 MHz for Channel
Sat.: 0600, 0700. Islands).
2 - 14
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

2363 BBC-Radio 4. Mon.-Fri.: 0600, 0700, 0800, 0900, 1000, 1100, (See Below) 198 kHz, A3E, 50-400 kW;
1200, 1300, 1400, 1500, 1600, 1700, 1900, Tyneside: 603 kHz, A3E, 2 kW;
2200; London: 720 kHz, A3E, 0.5.kW;
Sat.: 0700, 0800, 0900, 1000, 1100, 1300, 1400, N. Ireland: 720 kHz, A3E, 0.25-10 kW;
1600; Redruth: 756 kHz, A3E, 2 kW;
Sun.: 0600, 0700, 0800, 0900, 1300, 1700, 2100. Plymouth: 774 kHz, A3E, 1 kW;
Aberdeen: 1449 kHz, A3E, 2 kW;
Carlisle: 1485 kHz, A3E, 1 kW;
92.4-94.6 MHz, F3E (94.8 MHz for Channel
Islands).
2370 BBC-World Service. 0000, 0200, 0300, 0400, 0500. (See below) 198 kHz.
0000, 0200, 0300, 0600, 0700, 0800, 0900, 648 kHz.

1100, 1200, 1300, 1500, 1600, 1700, 1900,
2000, 2200, 2300.
0200, 0300, 0600, 2200, 2300. 1296 kHz.
0400, 0500, 0600. 3955 kHz.
0200, 0300, 0400, 0500, 0600, 0700, 1500, 6195 kHz.

1600, 1700, 1800, 1900, 2000, 2200.
0600, 0700, 0800. 7150 kHz.
0300, 0400. 7230 kHz.
0000, 0200, 0300, 0700, 0800, 0900, 2000, 7325 kHz.

2200, 2300.
0200, 0300, 0400, 0500, 0600, 0700, 0800, 9410 kHz.

0900, 1100, 1200, 1300, 1500, 1600, 1700,
1800, 1900, 2000, 2200, 2300.
0900, 1100, 1200, 1300, 1500. 9750 kHz.
0700, 0800, 0900, 1100, 1200, 1300, 1500, 9760 kHz.

1600.
0000, 0200, 0300, 2200, 2300. 9915 kHz.
0000, 0200, 0300, 0400, 0500, 0600, 0700, 12095 kHz.

0800, 0900, 1100, 1200, 1300, 1500, 1600,
1700, 1800, 1900, 2000, 2200, 2300.
0000, 0500, 0600, 0700, 0800, 0900, 1100, 15070 kHz.

1200, 1300, 1500, 1600, 1700, 1800, 1900,
2000, 2200, 2300.
2200, 2300. 15340 kHz.
0700, 0800, 0900, 1100, 1200, 1300, 1500. 17640 kHz.
0800, 0900, 1100, 1200, 1300, 1500, 1600. 17705 kHz.
NOTE: Not intended for precise use. Direct transmissions from United Kingdom will normally be received within 0.1s. of UTC, but signals from overseas relay stations may
have additional errors of up to 0.25s.
FRANCE
2380 France Inter (Allouis) (TDF). Continuous, except 0100-0500 each Tues. (See below) 162 kHz, A3E.
SYSTEM: From 00s. to 20s.: second markers of 100ms each. From 21s. to 58s.: time and date announcement. 59s.: emphasized second marker of 100ms. Other second
markers are emphasized to indicate the following: 13s. - the day preceding a holiday; 14s. - holiday; 17s. - local time is -2B; 18s. - local time is -1A.
SWITZERLAND
2400 Prangins (HBG). Continuous in the absence of telegraph traffic. (See below) 75 kHz, A1A, 20 kW.
SYSTEM: Carrier interruptions act as markers. From 01s. to 59s.: second markers of 100ms each. 00s.: minute marker of double pulse, 100ms each. 00m.-00s.: hour marker
of triple pulse, 100ms each. 12h./24h.-00m.-00s.: 12-hour marker of quadruple pulse, 100ms each.
2 - 15
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

ITALY
2410 Roma (IAM). Mon.-Sat.: 0730-0830, 1030-1130. (See below) 5000 kHz, A2A, A3E, 1 kW.

SYSTEM: From 01s. to 59s.: second markers of 5ms each. 00s.: minute marker of 20ms. At 00m., 15m., 30m., 45m.: station identification in morse code and Italian. At 05m.,
20m., 35m., 50m.: “IAM IAM IAM”, time in morse code.
2411 Torino (IBF). 0545-0600, 0645-0700, 0845-0900, 0945-1000, (See below) 5000 kHz, A2A, A3E, 5 kW.
1045-1100, 1145-1200, 1245-1300, 1345-1400,
1445-1500, 1545-1600, 1645-1700.
DUT1: Marked second indicated by double pulse.

SYSTEM: 45m.: station identification. From 45m. to 00m.: second markers of 5ms each, minute markers of septuple pulses of 5ms each. 50m.: “IBF IBF IBF”, time (-1A) in
morse code. 00m.: “IBF IBF IBF”, time (-1A) in morse code, station identification.
CHILE
2445 Valparaiso Playa Ancha Radiomaritima 0055-0100, 1155-1200, 1555-1600, 1955-2000. U.S. 4228 kHz, A2A;
(CBV). 8677 kHz, A2A.
PERU
2461 Peru National Radio. 0300, 1300, 1700, 2300. U.S. 609.5 kHz, A3E;
850 kHz, A3E;
103.9 MHz, F3E.
SYSTEM: The hour marker of 1s. commences at 59m.-59s.
2462 Radio Victoria. 0300, 1300, 1700, 2300. U.S. 780 kHz, J3E.
SYSTEM: The hour marker of 1s. commences at 59m.-59s.
INDIA
2476 New Delhi (ATA). 1230-0330. (See below) 5000 kHz, A1A, 8 kW.
Continuous. 10000 kHz, A1A, A3E, 8 kW.
0330-1230. 15000 kHz, A1A, 8 kW.
SYSTEM: 00m.: call sign and time in morse code. From 00m. to 04m.: second markers of 5ms 1000 Hz modulation each, minute markers of 100ms 1000 Hz modulation
each. From 04m. to 15m.: second markers of 5ms each, minute markers of 100ms each. 15m.: call sign and time in morse code. From 15m. to 19m.: second markers of
5ms 1000 Hz each, minute markers of 100ms 1000 Hz each. From 19m. to 30m.: second markers of 5ms each, minute markers of 100ms each. 30m.: call sign and time in
morse code. From 30m. to 34m.: second markers of 5ms 1000 Hz each, minute markers of 100ms 1000 Hz each. From 34m. to 45m.: second markers of 5ms each, minute
markers of 100ms each. 45m.: call sign and time in morse code. From 45m. to 49m.: second pulses of 5ms 1000 Hz each, minute markers of 100ms 1000 Hz each. From
49m. to 00m.: second markers of 5ms each, minute markers of 100ms each. All time signals are sent 50ms in advance of UTC.
SRI LANKA
2480 Colombo (4PB). 0555-0600, 1325-1330. English 482 kHz, A2A, 1 kW;
8473 kHz, A1A, 2.5 kW.
SYSTEM: From 53m./23m. to 55m./25m.: “CQ DE 4PB TIME SIGNALS AS”. From 55m./25m. to 00m./30m.: second markers of 100ms each, minute markers of 400ms each.
CHINA
2485.1 Shanghai (XSG). 0256-0856. (See below) 458 kHz, A1A, A2A;
4290 kHz, A1A;
6414.5 kHz, A1A;
6454 kHz, A1A;
8487 kHz, A1A;
8502 kHz, A1A;
12871.5 kHz, A1A;
12954 kHz, A1A;
17002.4 kHZ, A1A.
2 - 16
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

2490 Xian (BPM). 0730-0100. (See below) 2500 kHz, A1A, A3E.
Continuous. 5000 kHz, A1A, A3E.
Continuous. 10000 kHz, A1A, A3E.
0100-0900. 15000 kHz, A1A, A3E.
SYSTEM: From 00m. to 10m.: UTC second markers of 10ms each, UTC minute markers of 300ms each. From 10m. to 15m.: carrier. From 15m. to 25m.: UTC second
markers of 10ms each, UTC minute markers of 300ms each. From 25m. to 29m.: UT1 second markers of 100ms each, UT1 minute markers of 300ms each. From 29m.-00s.
to 29m.-40s.: “BPM” in morse code. From 29m.-40s. to 30m.-00s.: “BPM” and other station identification in Chinese. From 30m. to 40m.: UTC second markers of 10ms each,
UTC minute markers of 300ms each. From 40m. to 45m.: carrier. From 45m. to 55m.: UTC second markers of 10ms each, UTC minute markers of 300ms each. From 55m.
to 59m.: UT1 second markers of 100ms each, UT1 minute markers of 300ms each. From 59m.-00s. to 59m.-40s.: “BPM” in morse code. From 59m.-40s. to 00m.-00s.: “BPM”
and other station identification in Chinese. All UTC signals are broadcast 20ms in advance of UTC.
JAPAN
2500 Sanwa (JG2AS). Continuous in the absence of telegraph traffic. (See below) 40 kHz, A1A, 10 kW.
SYSTEM: From 00m.-01s. to 00m.-58s.: second markers of 500ms each. 00m.-59s.: second marker of 200ms. 01m.-00s.: minute marker of 500ms. At 15m. and 45m.:
“JG2AS JG2AS JG2AS” in morse code.
2501 Sanwa (JJY). Continuous. (See below) 2500 kHz, A9W, 2 kW;
5000 kHz, A9W, 2 kW;
8000 kHz, A9W, 2 kW;
10000 kHz, A9W, 2 kW;
15000 kHz, A9W, 2 kW.
DUT1: Marked seconds indicated by 45ms pulses.

SYSTEM: Second markers of 5ms 1600 Hz tone each are used. The second marker indicating the minute is preceded by an annunciatory marker: from 59.000s. to 59.005s.
a second marker of 5ms 1600 Hz tone; from 59.005s. to 59.045s. silence; from 59.045s. to 59.700s. annunciatory marker of 655ms 600 Hz; from 59.700s. to 00.000s. silence;
from 00.000s. to 00.005s. a second marker of 5ms 1600 Hz. The carrier is modulated by a 1000 Hz tone as well as the second markers during alternating 5m. periods. From
00m. to 05m.: second markers and 1000 Hz tone. From 05m. to 09m.: second markers only. From 09m. to 10m.: second markers; “JJY JJY” and time (-9I) in morse code
and then in voice; radio propagation warnings in morse code: “N” - normal, “U” - unstable, “W” - disturbed. This 10m. cycle is repeated throughout each hour except for 35m.
to 39m., which is a silent period.
REPUBLIC OF KOREA
2505 Taedok (HLA). Mon.-Fri.: 0100-0800. (See below) 5000 kHz.

SYSTEM: 00s.: minute marker of 500ms 1800 Hz tone. From 01s. to 28s.: second markers of 5ms 1800 Hz tone each. 29s.: silence. From 30s. to 52s.: second markers of
5ms 1800 Hz tone each. From 53s. to 58s.: time announcement by voice. 59s.: silence. 00m.: hour marker of 500ms 1500 Hz tone. A binary time code is transmitted
continuously on a 100 kHz subcarrier.
PHILIPPINES
2530 Manila (DUW21). Every even hour +55m. to +60m. U.S. 3650 kHz, A1A, 0.5 kW.
2 - 17
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

AUSTRALIA
2600 Radio Australia. 0700, 0800, 0900, 1000, 1100, 1200. (See below) 6020 kHz.
1500, 1700, 1800, 1900, 2000. 6060 kHz.
0700, 0800, 0900, 1000, 1100, 1200, 1500, 6080 kHz.

1700, 1800, 1900, 2000.
0900, 1000, 1100, 1200, 1300, 1400, 1500, 7240 kHz.

1600, 1700, 1800, 1900, 2000.
1500, 1600, 1700, 1800, 1900, 2000. 7260 kHz.
0900, 1000, 1100. 9510 kHz.
0900, 1000, 1100, 1200, 1300, 1400, 1500, 9580 kHz.

1600, 1700, 1800, 1900, 2000.
2100, 2200. 9645 kHz.
0700, 0800, 0900, 1000, 1100, 1200. 9710 kHz.
1500, 1600. 9770 kHz.
1500, 1600, 1700, 1800, 1900, 2000. 11660 kHz.
1500, 1600, 1700, 1800, 1900, 2000. 11695 kHz.
0000, 0100, 0200, 0300, 0700, 0800, 0900, 11720 kHz.

1000, 1100, 1900, 2000, 2100, 2200, 2300.
1300, 1400, 1500. 11800 kHz.
2100, 2200. 11855 kHz.
0000, 0100, 0200, 0300, 0700, 0800, 1700, 11880 kHz.

1800, 1900, 2000, 2200, 2300.
0700, 0800. 11910 kHz.
0000, 0900, 1000, 1100. 13605 kHz.
1300, 1400. 13755 kHz.
0900, 1000, 1100. 15170 kHz.
0000, 0100, 0200, 0300, 2300. 15240 kHz.
0000, 0100, 0200, 0300, 2100, 2200, 2300. 15320 kHz.
0000, 0700, 0800, 2100, 2200, 2300. 15365 kHz.
0100, 0200, 0300. 15510 kHz.
1200. 15530 kHz.
1200. 15565 kHz.
0700, 0800. 17695 kHz.
0100, 0200, 0300. 17715 kHz.
0000, 0100, 0200, 0300, 0700, 0800. 17750 kHz.
0000, 2200, 2300. 17795 kHz.
0000, 0100, 0200, 0300. 17880 kHz.
0700, 0800. 21525 kHz.
0100, 0200, 0300, 0700, 0800. 21595 kHz.
0900, 1000, 1100. 21725 kHz.
0000, 0400, 0500, 0600, 2200, 2300. 21740 kHz.
SYSTEM: From 59m.-55s. to 59m.-59s.: second markers of 100ms each. 00m.-00s.: minute marker of 500ms. In addition a warning signal consisting of a single dot is
transmitted 5s. before the first series of six dots (at ten seconds before the hour).
2 - 18
RADIO TIME SIGNALS
(1) (2) (3) (4) (5)

2601 Llandilo, Penrith (VNG). Continuous. (See below) 2500 kHz, H9W, 1 kW;
5000 kHz, B9W, 10 kW;
8638 kHz, A1A, 10 kW;
12984 kHz, A1A, 10 kW.
2200-1000. 16000 kHz, B9W, 5 kW.
DUT1: Marked seconds indicated by a double pulse.

SYSTEM: 00s.: minute marker of 500ms. From 01s. to 16s.: second markers of 50ms each, lengthened (as necessary) by 50ms of 900 Hz tone to indicate the current value
of DUT1. From 17s. to 19s.: second markers of 50ms each. 20s.: second marker of 200ms. From 21s. to 46s.: second markers of 100ms or 200ms each, indicating the time
of day and the day of the year in machine readable CCIR code. From 47s. to 49s.: second markers of 50ms each. From 50s. to 54s.: second markers of 5ms each. From
55s. to 58s.: second markers of 50ms each. 59s.: silent. Every 5th minute from 50s. to 58s.: second markers of 5ms each. Second markers of 1000 Hz tone are used. On
frequencies 2500, 5000 and 16000 kHz from 01s. to 03s. of each minute a female voice announces the time of day of the preceding minute marker. On frequencies 2500,
5000 and 16000 kHz from 21s. to 49s. on every 15th minute a male voice announces the details of the service. On frequencies 8638 and 12984 kHz for one minute following
14m.-00s., 29m.-00s., 44m.-00s. and 59m.-00s. the call sign VNG (which may be distorted) is transmitted in slow morse at an audio tone of about 400 Hz.
INDONESIA
2633 Jakarta (PKI)(PLC). 0055-0100. Modified ONOGO PKI: 8542 kHz, A1A, 1-3 kW;
PLC: 11440 kHz, A1A.
TAIWAN
2635 Chung-Li (BSF). Continuous. (See below) 5000 kHz, A1A, A2A;
15000 kHz, A1A, A2A.
DUT1: Marked seconds indicated by lengthened pulse.

SYSTEM: Second markers of 5ms each and minute markers of 300ms each are used. A 1000 Hz tone is transmitted constantly except from 40ms before to 40ms after each
marker during alternating 5m. periods. From 00m. to 05m.: markers with 1000 Hz tone. From 05m. to 10m.: markers without the 1000 Hz tone. This 10m. cycle is repeated
throughout the hour except for 35m. to 40m., which is a silent period.
2 - 19
CHAPTER 3
RADIO NAVIGATIONAL WARNINGS
300A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

300B. Coastal and Local Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
300C. Long Range Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
300D. Worldwide Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
300E. Worldwide Warnings Message Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
300F. Warning Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
300G. SPECIAL WARNINGS and Broadcast Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
300H. NAVTEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
300I. U.S. NAVTEX Transmitting Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
300J. Worldwide NAVTEX Transmitting Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
300K. Ice Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
300L. Navigational Warning Station List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
300M. WorldWide Navigational Warning Service NAVAREA Coordinators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-78
3-1
CHAPTER 3
300A. General The National Geospatial-Intelligence Agency (NGA)

acts as the NAVAREA IV and XII Coordinator and the
Radio navigational warning broadcasts are designed to United States Coast Guard (USCG) acts as the U.S.
provide the mariner with up-to-date marine information National Coordinator.
vital to safe navigation. These warnings are described as
follows: 300D. Worldwide Warnings
– Worldwide - Important worldwide marine information.
– Long Range - Important worldwide information issued The United States also maintains worldwide coverage
by geographic area. using the HYDROLANT/HYDROPAC Navigational
– Coastal and Local - Short-range marine information, Warning System outside of NAVAREAs IV and XII.
including items of interest to small craft. HYDROLANTs cover the eastern North Atlantic, South
Atlantic, North Sea, Baltic Sea, English Channel,
300B. Coastal and Local Warnings Mediterranean Sea, and contiguous areas. HYDROPACs
include the western North Pacific, South Pacific, South
These broadcasts are generally restricted to ports, China Sea, Indian Ocean, Red Sea, Persian Gulf, and
harbors, and coastal waters, and involve items of local contiguous areas. The combination of HYDROLANTs,
interest. Usually, local or short-range warnings are HYDROPACs, NAVAREA IVs and NAVAREA XIIs
broadcast from a single coastal station, frequently by voice provides worldwide notification of the more important
as well as radiotelegraph, to assist small craft operators in marine incidents and navigational changes.
the area. The information is often quite detailed. Foreign
area broadcasts are frequently in English as well as the 300E. Worldwide Warnings Message Content
native language. In the United States, short-range radio
navigational warnings are broadcast by the U.S. Coast NAVAREA IV, NAVAREA XII, HYDROLANT, and
Guard Districts via NAVTEX and subordinate coastal radio HYDROPAC Warnings normally include:
stations.
– Casualties to major and outermost aids to navigation
300C. Long Range Warnings such as primary lights, lightships, large navigational buoys
(LNBs), approach or sea buoys, etc. Mariners should
These warnings are intended primarily to assist mariners monitor local broadcasts for information concerning
on the high seas by promulgating navigational safety inshore, harbor and inland waterways, and aids which
information concerning port and harbor approaches, otherwise may not affect offshore navigation.
coastlines, and major ocean areas. Long-range radio – Establishment of new aids that could affect the safety of
navigational warnings are usually broadcast by means of offshore navigation. Alterations of an established aid
radiotelegraphy, and in many instances by where the change might be confusing are also broadcast.
radio-teletypewriter. – Floating dangers, such as those drifting in or near
The NAVAREA system of 16 navigational warning areas sea-lanes and large derelicts adrift on the high seas.
has been developed by a joint committee of the Following the end of the ice season, all reports of ice below
International Hydrographic Organization and the 52˚N which endanger the North Atlantic shipping lanes are
International Maritime Organization. The NAVAREA also broadcast. Trees, timbers, and drifting buoys do not
system provides worldwide coverage in English using normally constitute a danger for oceangoing ships and are
standard format and procedures. not broadcast on the long-range systems. They may be
Each NAVAREA is under the jurisdiction of an Area promulgated in local broadcasts.
Coordinator. The Area Coordinator assimilates – New or amended shoal depths, or other changes in
information from the coastal countries within the hydrography.
NAVAREA. Accountability is maintained through annual – Dangerous wrecks, obstructions, etc.
serialization and notification of cancellation. National – Selected exercises and hazardous operations conducted
Coordinators are charged with collecting warning by units of the armed forces are normally broadcast.
information from sources within their national boundaries. Specifically, these include the use of flares, searchlights or
National Coordinators often broadcast local or coastal pyrotechnics that may be mistaken for distress signals,
warnings. night firing exercises, darken-ship exercises, submarine
The United States participates as Area Coordinator for exercises, missile launches, space missions, and nuclear
both NAVAREA IV and NAVAREA XII. NAVAREA IV tests. Such warnings are purely cautionary and are not
includes the Western North Atlantic. NAVAREA XII intended to obstruct the right of innocent passage upon the
includes the Eastern North Pacific. high seas.
3-3
3-4
THE DELIMINATION OF SUCH AREAS IS NOT RELATED AND SHALL NOT PREJUDICE THE DELIMITATIONS OF ANY BOUNDARIES BETWEEN STATES
WORLDWIDE NAVIGATIONAL WARNING SERVICE (WWNWS) NAVAREAS
3-5
U.S. RADIO NAVIGATIONAL WARNING SYSTEMS

– Information regarding drifting mines and unexploded Section III of the Notice to Mariners includes a listing of
ordnance at depths of less than 100 fathoms is broadcast the serial numbers for all Radio Navigational Warnings in
when there is a clear danger to shipping. force. Each week, NGA promulgates a general Radio
– Vessels engaged in seismic operations, which often Navigation Warning message for each series which lists the
detonate explosives and tow extremely long cables. serial number of each message issued during the last six
– Malfunctions, scheduled off-air time for maintenance, weeks and in force at the time the message is compiled.
and other information concerning electronic aids to
navigation, including marine radiobeacon, LORAN-C, 300G. SPECIAL WARNINGS and Broadcast
GPS, DGPS service, and satellite navigation systems. Stations
– Establishment of offshore structures in or near shipping
lanes. SPECIAL WARNINGS are limited series broadcasts by
– The presence of large unwieldy tows in congested U.S. Navy and Coast Guard radio stations primarily for the
waters. dissemination of official government proclamations
– Notification of special changes or events such as affecting shipping.
alteration or suspension of mandatory traffic separation The texts of all SPECIAL WARNINGS in force are
schemes or activation of a new buoyage system. published in Notice to Mariners No. 1 each year. SPECIAL
WARNINGS may be broadcast throughout the year. NGA
In accordance with IMO guidelines (COMSAR/Circ.3, promulgates SPECIAL WARNINGS 24 hours, 48 hours
dated 19 April 1996), NGA no longer promulgates and for the next five Fridays after their initial release. Their
messages for distress, search and rescue, man overboard, text appears in the next published Notice to Mariners
overdue vessels, EPIRBs, etc., in NAVAREA IV and XII. following their broadcast. Each Notice to Mariners lists all
Rescue Coordination Centers (RCCs) are responsible for in-force SPECIAL WARNINGS.
promulgating messages concerning distress and search and Masters are urged to provide themselves with an
rescue as SafteyNET broadcasts via Inmarsat-C. Distress accurate list of all radio navigational warning messages
messages outside the limits of NAVAREA IV and XII will and SPECIAL WARNINGS prior to sailing.
continue to be promulgated as HYDROLANT and Radio Navigational Warnings issued by NGA are
HYDROPAC Warnings. broadcast by the following stations:
300F. Warning Message Format – HYDROLANT Warnings are transmitted from Boston,
MA (NMF).
Each of the four different types of Radio Navigational – NAVAREA IV Warnings are transmitted from Boston,
Warnings issued by NGA uses the same format. The first MA (NMF).
word of the heading identifies what series is involved: – HYDROPAC and NAVAREA XII warnings are
NAVAREA IV, NAVAREA XII, HYDROLANT, or transmitted from Port Reyes, CA (NMC), Honolulu, HI
HYDROPAC. Following the series title is the annual serial (NMO); Guam (NRV).
number, used for identification and record keeping
purposes. Following the serial number and year, and 300H. NAVTEX
enclosed by parentheses, are two more digits: the
geographic subregion locator. This is the same as the NAVTEX is an international automated direct printing
subregion system used for numbering charts. The limits of service for the promulgation of navigational and
the subregions appear on the inside back cover of each meteorological warnings and urgent information to ships.
Notice to Mariners. Last, a brief geographic description is It provides a low cost, simple means for the automatic
included. reception of Marine Safety Information (MSI) by narrow
The second line contains a chart number if the message band direct-printing telegraphy. NAVTEX is a component
concerns an aid to navigation. This chart is selected to of the WorldWide Navigational Warning Service
identify the aid. It is not necessarily the largest-scale chart (WWNWS) and is an essential element of the Global
of the area, but is usually the best for determining how the Maritime Distress and Safety System (GMDSS). Vessels
warning will affect the mariner. It is usually the chart the regulated by the Safety of Life at Sea (SOLAS)
mariner would select for navigation when approaching the Convention, as amended in 1988 (cargo vessels over 300
aid. tons and passenger vessels, on international voyages), and
Times are always expressed in Universal Time operating in areas where NAVTEX service is available,
Coordinated (UTC). have been required to carry NAVTEX receivers since 1
Navigation safety messages are canceled when no longer August 1993. The USCG discontinued broadcasts of safety
applicable. Messages are always canceled by specific information over MF Morse frequencies on that date. The
notification. A message pertaining to an exercise or event USCG voice broadcasts (Ch. 22A), often of more inshore
of known duration includes its own cancellation, usually and harbor information, will remain unaffected by
one hour after conclusion of the event. Warnings which are NAVTEX.
sufficiently permanent in nature to warrant promulgation in A NAVTEX user’s placard, which is intended to be
the Notice to Mariners are canceled no sooner than six laminated and either hung or posted near the NAVTEX
weeks after publication of that printed Notice. reciver, can be found on pgs. 3-9 and 3-10.
3-6
NAVTEX FEATURES: NAVTEX messages are A: Navigational warnings1

broadcast on a single frequency, 518 kHz, using the B*: Meteorological warnings1
English language. Nominated stations within each C: Ice reports
NAVAREA transmit on a time-sharing basis to eliminate D: Search and rescue information, and pirate
mutual interference. All necessary information is attack warnings1
contained in each transmission. The power of each E: Meteorological forecasts
transmitter is regulated in order to avoid the possibility of F*: Pilot service messages
interference between transmitters. G*: DECCA messages
A dedicated NAVTEX receiver has the ability to select H: LORAN messages
messages to be printed according to: J: SATNAV messages
– a technical code (B1B2B3B4) which appears in the K: Other electronic navaid messages
preamble of each message; and L: Navigational warnings (additional to A)2
– whether or not the particular message has already been V to Y: Special services (allocation by NAVTEX
printed. Panel)
By International agreement, certain essential classes of Z: No messages on hand
safety information such as navigational and meteorological
1
warnings and search and rescue information are Cannot be rejected by the receiver
2
non-rejectable to ensure that ships using NAVTEX always Should not be rejected by the receiver
receive the most vital information. *Normally not used in the United States
NAVTEX coordinators exercise control of messages
transmitted by each station according to the information NOTE: Since the National Weather Service normally
contained in each message and the geographical coverage includes meteorological warnings in forecast messages,
required. Therefore, the mariner may choose to accept meteorological warnings are broadcast using the subject
messages, as appropriate, either from the single transmitter indicator character E. U.S. Coast Guard District Broadcast
which serves the sea area around his position or from a Notices to Mariners affecting ships outside the line of
number of transmitters. demarcation, and inside the line of demarcation in areas
where deep draft vessels operate, use the subject indicator
MESSAGE PRIORITIES: Three message priorities are character A. Two subject indicator characters for non-MSI
used to dictate the timing of the first broadcast of a new messages in the United States were established 1 October
warning in the NAVTEX service. In descending order of 1995, but currently are not in use: V for Notice to
urgency they are: Fisherman and W for Environmental messages.
–VITAL–for immediate broadcast, subject to avoiding MESSAGE NUMBERING (B3B4): Each message within
interference of ongoing transmissions; a subject group is assigned a serial number, B3B4, between
–IMPORTANT– for broadcast at the next available period 01 and 99. This number will not necessarily relate to series
when the frequency is unused; numbering in other radio navigational warning systems.
–ROUTINE–for broadcast at the next scheduled On reaching 99, numbering should restart at 01 but avoid
transmission period. the use of message numbers still in force.
Both VITAL and IMPORTANT warnings will normally
need to be repeated, if still valid, at the next scheduled 300I. U.S. NAVTEX Transmitting Stations
transmission period.
TRANSMITTER IDENTIFICATION CHARACTER NAVTEX coverage is reasonably continuous off the U.S.
(B1): The transmitter identification character B1 is a single East, Gulf, and West Coasts, as well the area around Puerto
unique letter which is allocated to each transmitter. It is Rico, Kodiak Alaska, Hawaii and Guam. The U.S. has no
used to identify the broadcasts which are to be accepted or coverage in the Great Lakes, though coverage of much of
rejected by the receiver. Two stations having the same B1 the Lakes is provided by the Canadian Coast Guard. U.S.
character must have a sufficient geographical separation so Coast Guard NAVTEX broadcast stations are as follows:
as to minimize interference with one another. NAVTEX
transmissions have a designed range of about 400 nautical – Boston (NMF) (Station F)
miles. – Chesapeake (Portsmouth) (NMN) (Station N)
SUBJECT INDICATOR CHARACTERS (B2): – Savannah (NMN) (Station E)
Information in the NAVTEX broadcast is grouped by – Miami (NMA) (Station A)
subject. The subject indicator character B2 is used by the – Isabella (San Juan) (NMR) (Station R)
receiver to identify the different classes of messages listed – New Orleans (NMG) (Station G)
below. The indicator is also used to reject messages – Cambria (NMQ) (Station Q)
concerning certain optional subjects which are not required – Point Reyes (San Francisco) (NMC) (Station C)
by the ship (e.g., LORAN-C messages might be rejected – Astoria (NMW) (Station W)
by a ship which is not fitted with a LORAN-C receiver). – Kodiak (NOJ) (Station J)
Receivers also use the B2 character to identify messages, – Honolulu (NMO) (Station O)
which because of their importance, may not be rejected. – Guam (NRV) (Station V)
3-7
3-8
NAVTEX COVERAGE WITHIN NAVAREAS IV AND XII

PRACTICAL INSTRUCTIONS FOR THE USE OF A NAVTEX RECEIVER
The NAVTEX receiver is a Narrow Band Direct Printing (NBDP) device operating on the frequency 518 kHz (some
equipment can also operate on 490 and 4209.5 kHz), and is a vital part of the Global Maritime Distress and Safety
System (GMDSS).
It automatically receives Maritime Safety Information such as Radio Navigational Warnings, Storm/Gale Warnings,
Meteorological Forecasts, Piracy Warnings, Distress Alerts, etc. (full details of the system can be found in IMO
Publication IMO-951E - The NAVTEX Manual).
The information received is printed on the receiver’s own paper recorder roll. Each message begins with a start of
message function (ZCZC) followed by a space then four B characters. The first, (B1), identifies the station being
received, the second, (B2), identifies the subject i.e. Navigational Warning, Met Forecasts, etc., and the third and
fourth, (B3 + B4), form the consecutive number of the message from that station. This is followed by the text of the
message and ends with an end of message function (NNNN).
The NAVTEX system broadcasts COASTAL WARNINGS that cover the area from the Fairway Buoy out to about
250 nautical miles from the transmitter; the transmissions from some transmitters can be received out to 400
nautical miles and even further in unusual propagational conditions.
The practical advice on the other side of this card will help to ensure that you make the most efficient use of your
NAVTEX receiver, guaranteeing the reception of Maritime Safety Information within the respective coverage areas
of the NAVTEX stations being used.
3-9
NAVTEX RECEIVER CHECK-OFF LIST
For a NAVTEX receiver to function effectively, it is essential that the operator should have a sound knowledge of
how to programme and operate his particular receiver. This is not difficult provided the following practical steps are
followed:
1. Make sure that there are sufficient rolls of NAVTEX paper on board.
2. Check that there is paper in the receiver.
3. Turn the NAVTEX receiver on at least four hours before sailing, or better still, leaves it turned on permanently.
This avoids the chance of losing vital information that could affect the vessel during its voyage.
4. Make sure that the Equipment Operating Manual is available close to the equipment, paying particular attention
to the fact that your equipment may be programmed differently from other makes and models.
5. Using the Equipment Operating Manual, make a handy guide for programming, status and autotesting procedures
for your vessel’s equipment, place it in a plastic cover and keep it with the equipment.
6. Have available next to the equipment a plasticised copy of the NAVAREAs/METAREAs in which the vessel is
likely to sail, showing the NAVTEX stations, their coverage ranges, their respective time schedules and B1
characters.
7. Programme your receiver to accept only those messages identified with the B1 character of the NAVTEX station
which covers the area in which your vessel is currently sailing and the one covering the area into which you are
about to sail. This will avoid the equipment printing information which has no relevance to your voyage and will
avoid unnecessary waste of paper.
8. Programme your receiver to accept only those messages identified with the B2 characters (type of message) you
wish to receive. It is recommended that most B2 characters (A to Z) be programmed, but you may exclude those for
navaid equipments (Decca or Loran for example) with which your vessel is NOT fitted. Be aware that the characters
A, B and D MUST be included, as they are mandatory.
9. Take extra care not to confuse the programming of B1 characters (station designators) with those of B2 characters
(type of messages). It is very easy for an operator to believe that he/she is programming B1 characters when in fact
they are programming B2 characters. After programming ALWAYS CHECK the programme status to ensure that it
is correct.
10. If information is received incomplete/garbled, inform the relevant NAVTEX station, giving the time of reception
(UTC) and your vessel’s position. By so doing, not only will you obtain the information you require, but you will
also help to improve the system. In the same way, any safety-critical occurrences observed during the voyage must
be passed immediately to the nearest (or most convenient) Coast Radio Station and addressed to the relevant
NAVAREA/METAREA or National Co-ordinator responsible for the area in which you are sailing.
3 - 10
300J. Worldwide NAVTEX Transmitting NAVTEX service. The frequency is 518 kHz unless
Stations otherwise indicated. For scheduled Maritime Safety
Information (MSI) broadcast times of a particular coast
The following operational coast radio stations, extracted radio station see sec. 300L.
from ANNEX 7 of the IMO GMDSS Master Plan, provide
NAV/MET Country NAVTEX Position Range Transmitter

Area Coast Station (NM) Identification
(B1) Character
I Belgium Oostende 51-11N 02-48E 150 M
55 T
Denmark (Greenland- Reykjavik 64-05N 21-51W 550 X
East Coast)
Estonia Tallinn 59-30N 24-30E 250 U
France Niton (U.K.) 50-35N 01-18W 270 K
T (French)1
Iceland Reykjavik 64-05N 21-51W 550 R
R (Icelandic)1
Ireland Valentia 51-27N 09-49W 400 W
Malin Head 55-22N 07-21W 400 Q
Netherlands Netherlands Coast Guard 52-57N 04-47E 250 P
(Den Helder)
Norway Bodø 67-16N 14-23E 450 B
Rogaland 58-48N 05-34E 450 L
Vardø 70-22N 31-06E 450 V
Svalbard 78-04N 13-38E 450 A
Ørlandet 63-40N 09-33E 450 N
Russian Federation Murmansk 68-46N 32-58E 300 C
Arkhangel’sk 64-51N 40-17E 300 F
Sweden Stockholm (Bjuröklubb) 64-28N 21-36E 300 H
Stockholm (Gislövshammer) 55-29N 14-19E 300 J
Stockholm (Grimeton) 57-06N 12-23E 300 D
United Kingdom Cullercoats 55-04N 01-28W 270 G
U1
Portpatrick 54-51N 05-07W 270 O
C1
Niton 50-35N 01-18W 270 E
I1
II France Corsen (CROSS) 48-28N 05-03E 300 A
E (French)1
Portugal Horta (Azores) 38-32N 28-38W 640 F
J (Portuguese)1
Monsanto 38-44N 09-11W 530 R
G (Portuguese)1
Spain Coruna 43-21N 08-27W 400 D
Tarifa 36-01N 05-34W 400 G
Las Palmas 28-10N 15-25W 400 I
1 490 kHz broadcast service.
3 - 11

(B1) Character
III Bulgaria Varna 43-04N 27-46E 350 J
Croatia Split 43-30N 16-29E 85 Q
Cyprus Cyprus 35-03N 33-17E 200 M
Egypt Alexandria 31-12N 29-52E 350 N
France La Garde (CROSS) 43-06N 05-59E 250 W
S (French)1
Greece Iraklion 35-20N 25-07E 280 H
Kerkira 39-37N 19-55E 280 K
Limnos 39-52N 25-04E 280 L
Israel Haifa 32-49N 35-00E 200 P
Italy Roma 41-48N 12-31E 320 R
Augusta 37-14N 15-14E 320 V
Cagliari 39-14N 09-14E 320 T
Trieste 45-41N 13-46E 320 U
Malta Malta 35-49N 14-32E 400 O
Romania Constanta 44-12N 28-40E 250 L (Romanian)1
Russian Federation Novorossiysk 44-36N 37-58E 300 A
Astrakhan (Caspian Sea) 45-47N 47-33E 250 W
Spain Cabo de la Nao 38-43N 00-09E 300 X
Turkey Istanbul 41-04N 28-57E 300 D
Samsun 41-17N 36-20E 300 E
Antalya 36-53N 30-42E 300 F
Izmir 38-21N 26-35E 300 I
Ukraine Kerch 45-23N 36-28E 120 B
Odessa 46-29N 30-44E 280 C
IV Bermuda Bermuda 32-23N 64-40W 280 B
Canada Riviere-au-Renard 50-15N 66-10W 300 C
D (French)
Wiarton 44-20N 81-10W 300 H
St. John’s 47-30N 52-40W 300 O
Thunder Bay 48-25N 89-20W 300 P
Sydney 46-10N 60-00W 300 Q
J (French)
Yarmouth 43-45N 66-07W 300 U
V (French)
Labrador 53-42N 57-02W 300 X
Iqaluit 63-43N 68-33W 300 T
S (French)1
Denmark (Greenland- Nuuk (Kook Island) 64-04N 52-01W 400 W
West Coast)
Netherlands Antilles Curaçao 12-10N 68-52W 400 H
United States Miami 25-37N 80-23W 240 A
Boston 41-43N 70-30W 200 F
3 - 12

(B1) Character
IV United States (cont.) New Orleans 29-53N 89-57W 200 G
Chesapeake (Portsmouth) 36-43N 76-00W 280 N
Isabella 18-28N 67-04W 200 R
Savannah 32-08N 81-42W 200 E
VI Argentina Ushuaia 54-48S 68-18W 280 M
Rio Gallegos 51-37S 65-03W 280 N
Comodoro Rivadavia 45-51S 67-25W 280 O
Bahia Blanca 38-43S 62-06W 280 P
Mar del Plata 38-03S 57-32W 280 Q
Buenos Aires 34-36S 58-22W 560 R
Uruguay La Paloma 34-40S 54-09W 280 F
A (Spanish)1
VII Namibia Walvis Bay 23-03S 14-37E 378 B
South Africa Cape Town 33-40S 18-43E 500 C
Port Elizabeth 34-02S 25-33E 500 I
Durban 30-00S 31-30E 500 O
VIII India Bombay 19-05N 72-50E 250 G
Madras 13-08N 80-10E 250 P
Mauritius Mauritius 20-10S 57-28E 400 C
IX Bahrain Hamala 26-09N 50-28E 300 B
Egypt Ismailia (Serapeum) 30-28N 32-22E 400 X2
Quseir (Kosseir) 26-06N 34-17E 350 V
Iran Bushehr 28-59N 50-50E 300 A
Bandar Abbas 27-07N 56-04E 300 F
Saudi Arabia Dammam 26-26N 50-06E 390 G
Jiddah 21-23N 39-10E 390 H
Oman Muscat 23-36N 58-30E 270 M
Pakistan Karachi 24-51N 67-03E 400 P
X Australia is only providing coastal warnings through the International SafetyNET Service (AUSCOAST).
XI China Sanya 18-14N 109-30E 250 M
Guangzhou 23-08N 113-32E 250 N
Fuzhou 26-01N 119-18E 250 O
Shanghai 31-08N 121-33E 250 Q
Dalian 38-52N 121-31E 250 R
Indonesia Jayapura 02-31S 140-43E 300 A
Amboina (Ambon) 03-42S 128-12E 300 B
Makassar 05-06S 119-26E 300 D
Jakarta 06-06S 106-54E 300 E
Japan Otaru 43-19N 140-27E 400 J
Kushiro 42-57N 144-36E 400 K
Yokohama 35-14N 139-55E 400 I

2 Includes 4209.5 kHz broadcast service.
3 - 13

(B1) Character
XI Japan (cont.) Moji 34-01N 130-56E 400 H
Naha 26-05N 127-40E 400 G
Malaysia Pinang 05-26N 100-24E 350 U
Miri 04-28N 114-01E 350 T
Sandakan 05-54N 118-00E 350 S
Korea, Republic of Chukpyon 37-03N 129-26E 200 V
J (Korean)1
Pyonsan 35-36N 126-29E 200 W
K (Korean)1
Singapore Singapore 01-25N 103-52E 400 C
Taiwan Chi-lung (Keelung) 25-08N 121-45E 540 P2
V (Chinese)2
Linyuan 22-29N 120-25E 540 P2
X (Chinese)2
Yenliaoken 23-54N 121-36E 350 P
X (Chinese)1
Lintou 23-33N 119-38E 350 P
V (Chinese)1
Thailand Bangkok 13-43N 100-34E 200 F
United States Guam 13-29N 144-50E 100 V
Vietnam Ho Chi Minh City 10-47N 106-40E 400 X
Da Nang 16-05N 108-13E 400 K
Hong Kong (China) Hong Kong 22-13N 114-15E 400 L
XII Canada Prince Rupert 54-17N 130-25W 300 D
Tofino 48-55N 125-32W 300 H
United States Pt. Reyes (San Francisco) 37-55N 122-44W 350 C
Kodiak 57-46N 152-34W 200 J
Honolulu 21-22N 158-09W 350 O
Cambria (Long Beach) 35-31N 121-03W 350 Q
Astoria 46-10N 123-49W 216 W
XIII Russian Federation Vladivostok 43-23N 131-54E 230 A
Kholmsk 47-02N 142-03E 300 B
Petropavlovsk 53-15N 158-25E 300 C
Magadan 59-41N 150-09E 120 D
Okhotsk 59-22N 143-12E 300 G
XV Chile Antofagasta 23-40S 70-25W 300 A
H (Spanish)
Valparaiso 32-48S 71-29W 300 B
I (Spanish)
Talcahuano 36-42S 73-06W 300 C
J (Spanish)

2 4209.5 kHz broadcast service.
3 - 14

(B1) Character
XV Chile (cont.) Puerto Montt 41-30S 72-58W 300 D
K (Spanish)
Punta Arenas (Magallanes) 53-09S 70-58W 300 E
L (Spanish)
Isla de Pascua 27-09S 109-25W 300 F
G (Spanish)
XVI Peru Paita 05-05S 81-07W 400 S
Callao 12-03S 77-09W 400 U
Mollendo 17-01S 72-01W 400 W
3 - 15
300K. Ice Information limits of all known ice in two message bulletins each day
and a daily graphical chart containing ice information, to
INTERNATIONAL ICE PATROL: In February or inform ships of the extent of the estimated limits of all
March, the International Ice Patrol (IIP) will commence its known ice. The IIP continually monitors ice conditions in
annual service of providing maritime safety information on the vicinity of the Grand Banks and will commence
ice conditions in the vicinity of the Grand Banks of iceberg warning information when appropriate; however,
Newfoundland. Reports of ice in this area will originate regardless of ice density, the IIP will begin broadcasting at
from various sources, including passing ships and IIP least weekly (Friday) updates beginning on the Friday
reconnaissance flights. Pending ice severity, the IIP will nearest 15 February at 1200UTC.
broadcast the southeastern, southern, and southwestern Broadcasts of IIP bulletins are as follows:
BROADCAST STATION BROADCAST TIME (UTC) FREQUENCIES

NAVTEX Broadcast
USCG Communication Station 0045, 0445, 0845, 518 kHz, F1B.
Boston/NMF. 1245, 1645, 2045.
Special Broadcast during 518 kHz, F1B.
next available time slot.
Canadian CG Marine Communications 1820 (winter), 518 kHz, F1B.
and Traffic Services St. John’s/VON. 2220 (summer).
SITOR Broadcast
USCG Communication Station 0030. 6314, 8416.5,
Boston/NMF. (NIK via NMF) 12579 kHz, F1B.
1218. 8416.5, 12579,
16806.5 kHz, F1B.
RADIOFACSIMILE Broadcast
USCG Communication Station 1600, 1810. 6340.5, 9110,
Boston/NMF. (NIK via NMF) 12750 kHz, F3C.
Offenbach (Main), Germany via 0930, 2100. 3855, 7880,
Pinneberg/DDK/DDH. 13882.5 kHz, F1C.
Radio Telephone
Canadian CG Marine Communications 0107, 0907, 1907. 2598 kHz, J3E.
and Traffic Services St. Anthony/VCM. Continuous. VHF Channel 21B, 83B.
(Iceberg Bulletin for NFLD Coast and
Belle Isle)
Special Broadcasts
Canadian CG Marine Communications 0007, 0837, 1637, 2207 2598 kHz, J3E.
and Traffic Services St. John’s/VON. and as required.
Continuous. VHF Channel 21B, 28B, 83B.
Inmarsat SafetyNET Broadcasts
AOR-E and AOR-W Satellites. 0000, 1200. Inmarsat-C SafetyNET.
Special Broadcasts of targets outside
limits sent upon receipt.
World Wide Web
International Ice Patrol Web Page. Updated after 0000, 1200. http://www.uscg.mil/lantarea/iip
/home.html
National Weather Service. Updated daily after 1600. http://weather.noaa.gov/pub/fax/
PIEA88.gif
Automated Weather Network
Automated Weather Network (AWN). Updated daily at 0000, 1200. Header: STNT41 KNIK.
Telefacsimile upon Demand
Fax On Demand. Updated daily after 1600. Fax: (1) 860-441-2773.
E-mail On Demand. Updated daily after 1600. ftpmail@weather.noaa.gov
3 - 16
Mariners should note that NAVTEX ice reports may be The 0000Z and 1200Z Ice Bulletins will be broadcast
programmed for rejection at the receiver. Mariners desiring over the AOR-E and AOR-W Satellites. The 0000Z
to receive IIP NAVTEX ice reports must ensure that their bulletin is broadcast between 2000 and 2359Z, and the
receivers are appropriately programmed for reception. 1200Z bulletin is broadcast at 1130Z. In addition, safety
The Ice Chart Facsimile and the 0000Z and 1200Z Ice broadcasts regarding icebergs outside of the limits of all
Bulletins are available on the World Wide Web at the known ice will be transmitted over both satellites upon
International Ice Patrol’s products section. IIP’s homepage receipt.
can be found at: COMMUNICATIONS WITH COMMANDER,
http://www.uscg.mil/lantarea/iip/home.html INTERNATIONAL ICE PATROL: All ships are
The Ice Chart Facsimile is also available via Fax on encouraged to immediately report sightings of ice to
Demand from the IIP’s telefax machine. Dial (1) COMINTICEPAT GROTON CT, when near or within the
860-441-2773 from a fax phone, and press “Copy” after “estimated limits of all known ice.” Ships are encouraged
successful connection. to make reports even if no ice is sighted. The following
The Ice Chart Facsimile is also available via E-mail on information should be included when reporting ice:
Demand from the National Weather Service’s FTP e-mail
system. Send an e-mail to ftp@weather.noaa.gov with any – Ship name and call sign.
subject line. The body of the text should read as follows: – Iceberg position [specify either the geographic
open coordinates (latitude, longitude) or range/bearing from
cd fax ship’s stated geographic position (latitude, longitude)].
get PIEA88.gif ---or--- get PIEA88.tif – Time of sighting (in UTC).
quit – Method of detection (visual, radar, or both).
The e-mail server will then automatically send a GIF or – Size and shape of iceberg (see tables below).
TIF formatted image of the facsimile back to the sender’s – Sea ice concentration (in tenths).
e-mail address. – Sea ice thickness in feet or meters (specify units).
The Ice Bulletin is now posted to the Automated
Weather Network, a weather service bulletin board The following tables describe size and shape criteria
accessible by U.S. Department of Defense and NATO used by the Ice Patrol:
units. Use header STNT41 KNIK to access IIP’s products.
DESCRIPTIVE NAME HEIGHT LENGTH

(ft) (m) (ft) (m)
Growler < 17 <5 < 50 < 15
Small Berg 17-50 5-15 50-200 15-60
Medium Berg 51-150 16-45 201-400 61-122
Large Berg 151-240 46-75 401-670 123-213
Very Large Berg > 240 > 75 > 670 > 213
SHAPE DESCRIPTION
Non-Tabular This category covers all icebergs that are not tabular-shaped
as described below. This includes icebergs that are
dome-shaped, sloping, blocky, and pinnacle.
Tabular Flat topped iceberg with length-height ratio greater than 5:1.
In addition to ice reports, sea surface temperature and hold them for transmission when the radio operator is on
weather reports are important to the Ice Patrol in predicting watch. When reporting, please include the following:
the drift and deterioration of ice and in planning aerial
patrols. If you make routine weather reports to METEO – Ship position.
WASHINGTON, please continue to do so. If your vessel – Course.
does not normally make these reports, it is requested that – Speed.
you make special reports directly to the Ice Patrol every 6 – Visibility.
hours when within the area between latitudes 40˚N to 52˚N – Air and sea surface temperature.
and between longitudes 39˚W to 57˚W. Ships with one – Barometric pressure.
radio operator may prepare the reports every 6 hours and – Wind direction and speed.
3 - 17
Report ice sightings, weather, and sea surface temperature Canadian Coast Guard
to COMINTICEPAT GROTON CT through Inmarsat, U.S. Marine Communications and Traffic Services
Coast Guard Communication Stations or Canadian Coast
Guard Marine Communications and Traffic Services Centers. Receiving Station Bands Guarded/
If reporting iceberg sightings to IIP through Inmarsat-A or -C, Transmit Frequency
use service code 42. This will ensure the ice information (Day/Night)
immediately reaches the COMINTICEPAT GROTON CT.
There is no charge to the user for iceberg reports sent using Port aux Basques (VOJ), VHF Ch. 16
service code 42. Newfoundland 2182 kHz, H3E
(Port aux Basques Coast Guard Radio)
INMARSAT-A (General Instructions):
– Select Telenor (global identification code 01). Sydney (VCO), VHF Ch. 16
– Select routine priority. Nova Scotia 2182 kHz, H3E
– Select duplex telex channel. (Sydney Coast Guard Radio)
– Initiate the call.
– Upon receipt of GA (Go Ahead), select the desired Dartmouth (VCS), VHF Ch. 16
two-digit prefix access code followed by at + sign (42+). Nova Scotia 2182 kHz, H3E
– Send the report. (Halifax Coast Guard Radio)
– The message will be forwarded at NO CHARGE from
the mariner to International Ice Patrol by Telenor Saint John (VAR), VHF Ch. 16
Satellite Services, Inc. New Brunswick 2182 kHz, H3E
(Fundy Coast Guard Radio)
INMARSAT-C (General Instructions):
– Access the two-digit code service on SES as instructed in U.S. Coast Guard
the manufacturer’s information. Communication Stations
– Using the SES text editor, prepare the message.
– Enter the two-digit code of the service required (42). DIRECT PRINTING RADIOTELETYPE
– Select the CES (01, Telenor, AORW).
– Transmit the message. SELCALL 1097 (NMN)
– Wait for acknowledgment from the CES. (Assigned Frequency)
– The message will be forwarded at NO CHARGE from Ship Transmit Shore Transmit
the mariner to International Ice Patrol by Telenor 4174 kHz 4212 kHz On request
Satellite Services, Inc.
6264.5 kHz 6316 kHz 2300-1100
Iceberg sightings may also be reported on the guarded 8388 kHz 8428 kHz Continuous
frequencies listed below: 12490 kHz 12592.5 kHz Continuous
16696.5 kHz 16819.5 kHz Continuous
Canadian Coast Guard
Marine Communications and Traffic Services 22297.5 kHz 22389.5 kHz 1100-2300
Receiving Station Bands Guarded/ SSB VOICE FREQUENCIES

Transmit Frequency (Carrier Frequency)
(Day/Night) Ship Shore NMF NMN
St. John’s (VON), VHF Ch. 16 Transmit Transmit
Newfoundland 2182 kHz, H3E 4134 kHz 4426 kHz 2230-1030 2300-1100
(St. John’s Coast Guard Radio) 6200 kHz 6501 kHz Continuous Continuous
8240 kHz 8764 kHz Continuous Continuous
St. Anthony (VCM), VHF Ch. 16
Newfoundland 2182 kHz, H3E 12242 kHz 13089 kHz 1030-2230 1100-2300
(St. Anthony Coast Guard Radio) 16432 kHz 17314 kHz On request On request
Labrador (VOK) VHF Ch. 16 NOTE that USCG CAMSLANT Chesapeake (NMN)
2182 kHz, H3E provides all U.S. east coast ON-CALL SITOR service.
(Labrador Coast Guard Radio)
Telephone communications are available to the Ice
Placentia (VCP), VHF Ch. 16 Patrol Office in Groton, CT throughout the season. The
Newfoundland 2182 kHz, H3E numbers are: (1) 860-441-2626 (Ice Patrol Duty Officer,
(Placentia Coast Guard Radio) 0700-1630 EST) or (1) 757-398-6231 (USCG Atlantic
3 - 18
Area Command Center, Portsmouth, VA, after working following formats, on the World Wide Web at the NIC
hours); IIP fax: (1) 860-441-2773. Website:
CAUTIONS: The IIP attempts to locate and track http://www.natice.noaa.gov
icebergs south of 52˚N, especially those south of 48˚N, – Global sea ice edge products consisting of
which may pose a hazard to shipping in the vicinity of the latitude/longitude pairs.
Grand Banks of Newfoundland. When the position, time of – JPG image files using the World Meteorological
sighting, size, and description of icebergs are reported to Organization’s (WMO) Ice Egg Code.
IIP, the data is entered into a computer program that – Geographic Information System (GIS) ARC/INFO
predicts their drift. Please note that the iceberg positions coverages.
reported in all IIP products are always the predicted Some of the NIC’s products are also transmitted as text
position for the date and time of that product. As the time messages.
after sighting increases, so does the probability of error in The NIC is located at:
the icebergs’ predicted positions. This probability of error
is taken into account when the limits of all known ice are NATIONAL ICE CENTER
determined. FEDERAL BUILDING 4
The purpose of the Ice Patrol’s messages and charts is to 4251 SUITLAND ROAD
advise mariners of the best estimate of the extent of WASHINGTON DC 20395
icebergs in the region of the Grand Banks of
Newfoundland. The iceberg positions represented within Telephone: (1) 301-394-3100.
the estimated limits are intended only to give the mariner
an understanding of the relative densities of icebergs. Any GULF OF ST. LAWRENCE, ST. LAWRENCE RIVER,
attempt to navigate among icebergs within the estimated SOUTH AND EAST COASTS OF NEWFOUNDLAND
limits on the basis of the facsimile charts or the message AND LABRADOR COAST: Commencing December 15
bulletins is strongly discouraged. each year, and until ice in the Gulf of St. Lawrence is no
While the IIP attempts to be as accurate as possible in longer likely to hinder shipping, an experienced ship Master
reporting the presence of icebergs to mariners, it is not will be attached to ECAREG CANADA as Ice Operations
possible to assure that all icebergs are reported. Mariners Officer. During this period, vessels inbound to the Gulf of St.
are strongly urged to use radar carefully, but not to rely Lawrence should report using the address ECAREG
entirely upon it to detect icebergs, since icebergs often are CANADA through any Marine Communications and Traffic
not detected distinctly with radar. There is no substitute for Services (MCTS) Center 24 hours prior to their expected
vigilance and prudent seamanship, especially when entry into the Cabot Strait, stating their position, destination,
navigating near sea ice and icebergs. whether loaded or in ballast, ice class (if any), and
The IIP earnestly solicits comments, particularly classification society. This procedure will facilitate the
concerning the value and effectiveness of its services. passing of ice information and a suggested shipping track as
Additionally, facsimile charts annotated with the ship’s necessary. Ships bound for ports on the south and east coasts
position, frequency used, and time of receipt can also help of Newfoundland and along the coast of Labrador should
the IIP to better serve its customers. Comments can be also report to ECAREG CANADA for ice information,
provided using the phone and/or fax numbers above, or by routing and escort as necessary. Gulf shipping interests are
mail to: requested to maintain close contact with the Ice Operations
Office so that all routing and escort assistance needed may
COMMANDER be provided as circumstances permit.
INTERNATIONAL ICE PATROL All radio communications addressed to ECAREG
1082 SHENNECOSSETT ROAD CANADA and passed through a MCTS Center will be
GROTON CT 06340-6095 handled free of charge to the ship.
Ships outbound from Canadian ports east of Sept-Iles
NATIONAL ICE CENTER (NIC): The National Ice should report to the Ice Operations Officer ECAREG
Center is a multi-agency operational center representing CANADA through any MCTS Center 24 hours in advance
the Department of Defense (U.S. Navy), the Department of of sailing time, if possible, for ice information, suggested
Commerce (NOAA), and the U.S. Coast Guard under the routing, and escort if deemed necessary.
Department of Homeland Security. The NIC mission is to Ships outbound from Sept-Iles and ports west of
provide worldwide operational sea ice analyses and Sept-Iles may obtain the latest bulletin pertaining to
forecasts for the armed forces of the U.S. and Allied reported ice conditions, forecast, and recommended
nations, the Department of Commerce, the U.S. Coast routing for the Gulf and River St. Lawrence by calling
Guard under the Department of Homeland Security, and Quebec, Les Escoumins or Montreal MCTS Center on the
other U.S. government and international agencies, and the control frequency of the sector in which the vessel is
civil sector. The NIC produces analyses and forecasts of located. Vessels bound seaward when passing off Sept-Iles
Arctic, Antarctic, Great Lakes and Chesapeake Bay ice should also contact ECAREG CANADA through any
conditions to support customers with global, regional and MCTS Center for up-to-date ice information, routing, and
tactical scale interests. These products are available, in the icebreaker escort if required.
3 - 19
During the winter navigation season, MTCS Centers Throughout the navigation season ice advisories,
broadcast ice advisories and forecasts on a regular schedule forecasts, and synoptic ice charts are issued by Ice Central
as indicated in the station listings. Ice forecasts will in Ottawa and broadcast daily by radio and radio facsimile.
normally be for five-day periods when ice is light and of no The Canadian Coast Guard has established a MCTS
immediate concern to shipping. Frequency of issue will be Center at Iqaluit, Nunavut. The Center opens in early June
increased and forecast periods shortened when direct tactical and is staffed until the end of December, or as long as ships
support to shipping is required. Ice advisories will normally are at sea in the area. The address is:
include a summary of existing ice conditions, a forecast of
ice conditions for an appropriate period (2 to 5 days), and FISHERIES AND OCEANS
may include a suggested shipping track. This information is CANADIAN COAST GUARD
also broadcast in the form of charts by facsimile from NORDREG CANADA
stations so equipped. PO BOX 189
GREAT LAKES: The Fisheries and Oceans Canada IQALUIT NUNAVUT X0A 0H0
operates a service for the support of vessels navigating in
Canadian waters of the Great Lakes during the season in Telephone: (1) 867-979-5724 or 979-5269.
which navigation is restricted by ice. This service includes Fax: (1) 867-979-4236.
the promulgation of up-to-date information on ice Telex (Telefax): 063-15529
conditions, routing advice, aids to navigation, and the Telegraphic Identifier: NORDREG CDA.
provision of icebreaker support when available and
considered necessary, as well as the formation of convoys The Canadian Coast Guard has a limited number of
when conditions dictate. The following information icebreakers for the support of shipping. Because of heavy
outlines the service and facilities provided by the Canadian commitments, it is emphasized therefore that icebreaker
Coast Guard: support cannot always be provided at short notice. It is
– Assembly and distribution of ice advisories, forecasts, important that the Arctic Canada Traffic System
and synoptic ice charts. (NORDREG CANADA) is as well informed as possible
– Routing advice through light ice conditions, upon request. about the position and movements of ships in the Canadian
– Coordination and direction of icebreaker support activities. Arctic. Ships bound for or leaving Hudson Bay or the High
The service is known as Ice Sarnia and will commence Arctic are required to contact NORDREG CANADA in
December 1 each year, terminating when ice conditions accordance with reporting procedures specified in the latest
permit unrestricted navigation. The address is: edition of either of the following publications:
– Pub. 140, Sailing Directions (Planning Guide) for the
ICE SARNIA North Atlantic Ocean, Baltic Sea, North Sea, and the
CANADIAN COAST GUARD Mediterranean Sea.
105 CHRISTINA STREET SOUTH – Pub. 180, Sailing Directions (Planning Guide) Arctic
SARNIA ONTARIO N7T 7W1 Ocean.
– Canadian Radio Aids to Marine Navigation (Atlantic, St.
Telephone: (1) 519-383-1855. Lawrence, Great Lakes, Lake Winnipeg and Eastern
Fax: (1) 519-337-2498. Arctic).
The Canadian Coast Guard has a limited number of BALTIC SEA ICE CODE: This code is used by the
icebreakers available for the support of shipping, and these following countries: Denmark, Finland, Germany,
are heavily committed. Therefore, it is emphasized that Netherlands, Norway, Poland, Sweden, Russia, Estonia,
icebreaker support can not always be provided on short Lithuania, and Latvia. The general form of the message
notice. In order to make the most efficient use of available code is:
resources it is most important that Ice Sarina be kept ICE: AA 1ABSBTBKB2ABSBTBKB . . . nABSBTBKB
informed about the position and projected movements of BB 1ABSBTBKB2ABSBTBKB . . . nABSBTBKB
vessels on the Great Lakes. Masters or agents should notify CC etc.
Ice Sarnia as soon as their sailing time is known, giving
their ETD and destination in order to receive the most Letter Symbols:
up-to-date information AA, BB, Index letters defining districts for
ARCTIC AND HUDSON STRAIT AND BAY: The etc. fairway sections or sea areas to which the
Canadian Coast Guard operates a service for the support of following five-figure groups refer.
ships navigating in the ice-congested Canadian Arctic and 1, 2, . . . n Identifier figures of code groups
other ice-free northern waters during the summer referring to fairway sections or sea areas
navigation season. Access to this service can be obtained within the districts defined by AA, BB,
by calling NORDREG CANADA. This support includes CC, etc. The number cannot exceed 9.
the promulgation of up-to-date information on ice AB Amount and arrangement of sea ice
conditions, advice on routes, aids to navigation, icebreaker (Table I).
support when available and considered necessary, and SB Stage of ice development (Table II).
organization of convoys when conditions dictate. TB Topography or form of ice (Table III).
3 - 20
KB Navigational conditions in ice (Table Table III

IV). 3 Big ice floes - 500 to 2000 m across
4 Vast or giant ice floes - more than 2000 m across, or
Notes: level ice
– When a section is free of ice, the corresponding group 5 Rafted ice
may be omitted from the report. It should, however, 6 Compacted slush or shuga, or compacted brash ice
always be coded as n0//KB the first 2 days after it has 7 Hummocked or ridged ice
become ice-free and only omitted the third day if the 8 Thaw holes or many puddles on the ice
ice-free conditions continue. 9 Rotten ice
– When all sections within a district are ice-free, the whole / No information or unable to report
district shall be omitted from the report.
– The districts for which ice information is issued by Notes: Figures 0 to 4 only to be used if ice concentration
countries using this code are indicated for each country is less than 7/10 with no compacted ice present (TB = 4:
in the following pages. vast floes). 4 to 9 to be used if ice concentration is
greater 7/10 (TB = 4: level ice). If AB = 0, TB should be
Table I reported as /.
AB - Amount and arrangement of sea ice
0 Ice-free Table IV
1 Open water - concentration less than 1/10 KB - Navigation conditions in ice
2 Very open pack ice - concentration 1/10 to less than 0 Navigation unobstructed
4/10 1 Navigation difficult or dangerous for wooden
3 Open pack ice - concentration 4/10 to 6/10 vessels without ice sheathing
4 Close pack ice - concentration 7/10 to 8/10 2 Navigation difficult for unstrengthened or
5 Very close pack ice - concentration 9/10 to 9+/10* low-powered vessels built of iron or steel;
6 Very close pack ice, including consolidated pack ice navigation for wooden vessels even with ice
- concentration 10/10 3 Navigation without icebreaker assistance possible
7 Fast ice with pack ice outside only for high-powered vessels of strong
8 Fast ice construction and suitable for navigation in ice
9 Lead in very close or compact pack ice or along the 4 Navigation proceeds in lead or a broken ice-channel
ice edge without the assistance of icebreaker
/ Unable to report 5 Icebreaker assistance can only be given to vessels
* 9+/10 means 10/10 ice concentration with small suitable for navigation in ice and of special size
openings 6 Icebreaker assistance can only be given to vessels of
Note: The higher code figure has greater priority in special ice class and of special size
reporting. 7 Icebreaker assistance can only be given to vessels
after special permission
Table II 8 Navigation temporarily closed
SB - Stage of ice development 9 Navigation has ceased
0 New ice or dark nilas (less than 5 cm thick) / Unknown
1 Light nilas (5 to 10 cm thick) or ice rind
2 Gray ice (10 to 15 cm thick) Baltic District Designators
3 Gray-white ice (15 to 30 cm thick) Denmark
4 Thin first-year ice, first stage (30 to 50 cm thick) AA
5 Thin first-year ice, second stage (50 to 70 cm thick) (1) Sea area N of Hammaren
6 Medium first-year ice (70 to 120 cm thick) (2) Fairway to Ronne
7 Ice predominantly thinner than 15 cm with some (3) Sea area between Ronne and Falsterbo
thicker ice (4) Sea area off Falsterbo Rev
8 Ice predominantly 15 to 30 cm with some ice (5) Fairway through Drogden
thicker than 30 cm (6) Fairway to Kobenhavn
9 Ice predominantly thicker than 30 cm with some BB
thinner ice (1) Sea area W of Ven
/ No information or unable to report (2) Sea area E of Ven
Note: If AB = 0, SB should be reported as /. (3) Sea area off Helsingor
(4) Sea area off Nakkehoved
Table III (5) Sea area S of Hesselo
TB - Topography or form of ice (6) Fairway to Isefjorden-Kynbyvaerkets
0 Pancake ice, ice cakes, brash ice—less than 20 m CC
across (1) Sea area off Mon lighthouse (Route T)
1 Small ice floes - 20 to 100 m across (2) Sea area S of Gedser (Route T)
2 Medium ice floes - 100 to 500 m across (3) Sea area S of Rodby Havn (Route T)
3 - 21
(4) Sea area SE of Keldsnor (Route T) (3) Etukari—Ristinmatala

(5) Sea area off Sprodsbjerg (Route T) (4) Ajos harbor
(6) Sea area W of Omo (Route T) (5) Ajos—Ristinmatala
DD (6) Ristinmatala—Nukkujanmatala
(1) Agerso Sund—Stignaes (7) Nukkujanmatala—Kemi lighthouse
(2) Store Baelt channel, W part (8) Sea area SW of Kemi lighthouse
(3) Store Baelt, E part (Route T) (9) Nukkujanmatala—Ulkokrunni
(4) Sea area E of Romso (Route T) BB
(5) Fairway to Kalundborg oil harbor (1) Virpiniemi—Ulkokrunni
(6) Sea area W of Rosnaes (Route T) (2) Oulu harbor
EE (3) Oulu—Kattilankalla
(1) Sea area W of Sjaellands Rev (Route T) (4) Kattilankalla—Oulu Lt 3
(2) Sea area W of Hesselo (Route T) (5) Oulu Lt 3—Oulu Lt 1
(3) Sea area E of Anholt (Route T) (6) Sea area W of Oulu Lt 1
(4) Sea area W of Fladen Lt (Route T) (7) Open sea N of latitude of Marjaniemi
(5) Sea area NW of Kummelbanke (Route T) CC
(6) Sea area N of Skagen (Route T) (1) Raahe harbor and vicinity
FF (2) Heikinkari—Raahe lighthouse
(1) S entrance to Lille Baelt, Skjoldnaes (3) Raahe lighthouse—Nahkiainen
(2) Sea area off Helnaes (4) Open sea between latitudes of Marjaniemi and
(3) Fairway to Abenra—Enstedvaerket Ulkokalla
(4) Sea area off Assens DD
(5) Kolding Yderfjord to the bridges (1) Rahja harbor
(6) Fairway to Esbjerg (2) Rahja—Valimatala
GG (3) Sea area from Valimatala to the line
(1) Fairway at Fredericia to the bridges Ulkokalla—Ykskivi
(2) Sea area N of Aebelo (4) Open sea between latitudes of Ulkokalla and
(3) Fairway to Odense Pietarsaari
(4) Sea area at Vesborg lighthouse EE
(5) Sea area S of Sletterhage (1) Ykspihlaja harbor and vicinity
(6) Fairway to Aarhus (2) Repskaret—Kokkola lighthouse
HH (3) Sea area off Kokkola lighthouse
(1) Sea area off Fornaes (4) Pietarsaari harbor and vicinity
(2) Fairway to Randers (5) Masskar—Kallan
(3) Entrance at Hals Barre (6) Sea area off Kallan
(4) Fairway to Aalborg (7) Open sea between latitudes of Pietarsaari and
(5) Sea area NW of Laeso Nordvalen
(6) Sea area off Hirsholmene FF
(1) Sea area NE of Nordvalen
Estonia (2) Sea area from Nordvalen to W of Norrskar
AA (3) Vaskiluoto harbor
(1) Narva-Yyesu—Kunda (4) Vaskiluoto—Storhasten
(2) Kunda harbor and bay (5) Storhasten—Ensten
(3) Kunda harbor—Tallinn (6) Ensten—Korso
(4) Muuga harbor and bay (7) Korso—Norrskar
(5) Tallinn harbor and bay (8) Fairway NW of Norra Gloppsten—Skvattan
(6) Tallinn—Osmussaar (9) Sea area off Skvattan
(7) Osmussaar—Ristna GG
(8) Ristna—Irbenskiy Strait (1) Kaskinen harbor
BB (2) Sea area off Salgrund
(1) Parnu harbor and bay (3) Sea area farther off Salgrund
(2) Parnu—Irbenskiy Strait (eastern end) (4) Open sea N of latitude of Yttergrund
(3) Irbenskiy Strait HH
CC (1) Tahkoluoto harbor
(1) Muhuvain (2) Mantyluoto harbor
(3) Kallo—Kolmikulma
Finland (4) Sea area from Kolmikulma to the line
AA Sappi—Kaijakari
(1) Roytta harbor (5) Sea area W of Sappi
(2) Roytta—Etukari (6) Sea area beyond that visible from Sappi
3 - 22
(7) Open sea between the latitudes of Yttergrund and (2) Hasto Buso—Langden
Rauma (3) Langden—Ajax
II (4) Sea area S of Ajax
(1) Rauma harbor and vicinity (5) Sea area S of Jussaro
(2) Valkeakari—Kylmapihlaja RR
(3) Kylmapihlaja—Raumanmatala (1) Inkoo harbor and vicinity
(4) Sea area W of Raumanmatala (2) Kantvik harbor and vicinity
(5) Open sea S of latitude of Rauma (3) Sea area at Porkkala
JJ (4) Porkkala Ronnskar—Sommaro
(1) Uusikaupunki harbor and vicinity (5) Sea area off Sommaro
(2) Kirsta—Isokari (6) Sea area farther off Sommaro
(3) Isokari—Sandback SS
(4) Sea area off Sandback (1) Helsinki harbor
KK (2) Suomenlinna—Harmaja
(1) Sea area off Salskar (3) Harmaja—Svartbaden
(2) Sea area N of Market (4) Svartbaden—Helsinki lighthouse
(3) Sea area W of Market (5) Helsinki lighthouse—sea area S of Porkkala
(4) Sea area S of Market (6) Archipelago fairway Helsinki—Porkkala
LL Ronnskar
(1) Maarianhamina harbor and vicinity TT
(2) Sea area off Kobbaklintar and Nyhamn (1) Porvoo harbor and vicinity
(3) The middle Aland Sea (2) The S point of Emsalo—Porvoo lighthouse
(4) Sea area off Lagskar (3) Porvoo lighthouse—Kalbadagrund
MM (4) Sea area Kalbadagrund—Helsinki lighthouse
(1) Naantali harbor (5) Valkom harbor and vicinity
(2) Naantali—Rajakari (6) Archipelago fairway Boisto—Glosholm
(3) Turku harbor (7) Archipelago fairway Glosholm—Helsinki
(4) Turku—Rajakari UU
(5) Rajakari—Orhisaari (1) Kotka harbor and vicinity
(6) Orhisaari—Lovskar (2) Viikari—Boisto
NN (3) Boisto—Orrengrund
(1) Lovskar—Korra (4) Orrengrund—Tiiskeri
(2) Korra—Iso Hauteri (5) Sea area Tiiskeri—Kalbadagrund
(3) Iso Hauteri—Isokari (6) Hamina harbor and vicinity
(4) Lovskar—Berghamn (7) Suurmusta—Merikari
(5) Berghamn—Gustav Dalen (8) Merikari—Kaunissaari
(6) Gustav Dalen—Stora Sottunga
(7) Stora Sottunga—Brandokobben Germany
(8) Brandokobben—Ledskar AA
(9) Sea area off Rodhamn (1) Stralsund to Palmer Ort
OO (2) Palmer Ort to Freesendorfer Haken
(1) Lovskar—Grisselborg (3) Osttief
(2) Grisselborg—Norparskar (4) Landtief fairway
(3) Sea area at Vidskar (5) Sassnitz, port
(4) Uto (6) Sea area off Sassnitz
(5) Sea area S of Uto (7) Sea area off Arkona
(6) Sea area beyond that visible from Uto BB
(7) Sea area near Bogskar (1) Wolgast to Peenemunde
(8) Sea area S of Bogskar (2) Peenemunde to Ruden
(9) Sea area beyond that visible southward from CC
Bogskar (1) Rostock to Warnemunde
PP (2) Rostock, Seehafen
(1) Hanko harbor (3) Warnemunde, Seekanal
(2) Sea area E of Russaro (4) Sea area off Warnemunde
(3) Sea area S of Russaro (5) Rostock, sea area N of navigation buoy
(4) Sea area beyond that visible S from Russaro DD
(5) Hanko—Jarngrynnorna (1) Wismar to Walfisch
(6) Jarngrynnorna—Uto (2) Walfisch to Timmendorf
QQ (3) Timmendorf to Wismar navigation buoy
(1) Koverhar harbor and vicinity (4) Lubeck to Travemunde
3 - 23
(5) Travemunde, harbor (1) Klaipeda harbor

(6) Sea area off Travemunde (2) Klaipeda—Latvian waters
(7) Sea area off Dahmeshovede (3) Klaipeda—Russian waters
EE
(1) Holtenau to Laboe Netherlands
(2) Sea area off Bulk AA
(3) Sea area NE of Kiel lighthouse (1) Delfzijl
(4) Sea area off Westermarkeldorf (2) Eemshaven
(5) Sea area off Marienleuchte (3) Eems; Oterdum—Eemshaven
(6) E entrance of Fehmarnbelt (4) Eems; Eemshaven—Hubertgat
FF BB
(1) Flensburg to Holnis (1) Harlingen
(2) Holnis to Neukirchen (2) Along Pollendam
(3) Neukirchen to Kalkgrund (3) Blauwe Slenk
(4) Sea area off Falshoft (4) Vliestroom and Stortemelk
GG CC
(1) Holtenau, Kanalzufahrt (1) Den Helder
(2) Kanal, Holtenau to Rendsburg (2) Texelstroom and Marsdiep
(3) Kanal, Rendsburg to Brunsbuttel (3) Schulpengat
(4) Brunsbuttel, Kanalzufahrt DD
HH (1) Branch canal G and Zaandam harbors
(1) Hamburg—Landungsbrucken, Elbe (2) Amsterdam E harbors
(2) Stadersand (Elbe) (3) Amsterdam W harbors
(3) Brunsbuttel (Elbe) (4) Branch canal A (Beverwijk)
(4) Cuxhaven to Neuwerk (5) Nordseekanal
(5) Sea area off Elbe lightship (6) Ijmuiden locks—fairway buoy
II EE
(1) Bremen (Weser) (1) Nieuwe Maas and harbors
(2) Brake (Weser) (2) Botlek harbors
(3) Bremerhaven (Weser) (3) Europoort
(4) Hohe Weg lighthouse, channel (4) Nieuwe Waterweg
(5) Alte Weser, channel (5) Hoek van Holland—fairway buoy
(6) Neue Weser, channel FF
KK (1) Moerdijk
(1) Wilhelmshaven harbor entrance (2) Moerdijk—Dordrecht
(2) Wilhelmshaven oil pier (Jade) (3) Dordrecht
(3) Schillig (Jade) (4) Oude Maas
(4) Wangerooge channel (5) Noord
LL GG
(1) Emden (Ems) and outer harbor (1) Antwerpen harbors
(2) Emden to Randzelgat (Ems) (2) Schelde: Antwerpen—Hansweert
(3) Borkum, Randzelgat (Ems) (3) Schelde: Hansweert—Vlissingen roads
(4) Borkum, Westerems (4) Sloehaven
(5) Oostgat
Latvia (6) Wielingen
AA (7) Terneuzen Canal—Gent
(1) Riga harbor
(2) Riga harbor—Mersrags entrance Norway
(3) Mersrags—Irbenskiy Strait AA
(4) Irbenskiy Strait (1) Sekken (Halden)
BB (2) Singlefjorden (Halden)
(1) Ventspils harbor (3) Svinesund—Halden
(2) Irbenskiy Strait—Ventspils harbor (4) Torbjornskjaer light
CC (5) Struten light
(1) Liepaja harbor (6) Loperen (Fredrikstad)
(2) Ventspils harbor—Liepaja harbor BB
(3) Liepaja harbor—Lithuanian waters (1) Osterelv (Fredrikstad)
(2) Leira (Fredrikstad)
Lithuania (3) Vesterelv (Fredrikstad)
AA (4) Rauoyfjord
3 - 24
(5) Verlebukta—Moss AA
(6) Mossesundet (1) Sea area off Krynica Morska
CC (2) Gdansk port
(1) Oslo—Steilene—Spro light (3) Gdansk, Port Polnocny
(2) Spro light—Fagerstrand—Drobak (4) Sea area off Gdansk
(3) Drobak—Filtvet light (5) Gdynia, port
(4) Filtvet light—Gullholmen light (6) Sea area off Gdynia
(5) Rodtangen— Svelvik (7) Sea area S of Helu
(6) Svelvik—Steinsbraten light (8) Sea area E of Helu
(7) Steinsbraten light—Drammen (9) Sea area N of Helu
(8) Breiangen (N of Horten) BB
DD (1) Sea area off Rozewie
(1) Langgrunn (Horten) (2) Ustka, port
(2) Gullholmen light—Mefjordbaen (3) Sea area off Ustka
(3) Mefjordbaen—Fulehuk light (4) Darlowo port
(4) Fulehuk light—Faerder light (5) Sea off Darlowo
(5) W of Faerder light (6) Kolobrzeg, port
(6) S of Faerder (7) Sea area off Kolobrzeg
EE CC
(1) Torgersoygapet (Tonsberg) (1) Zalew Szczecinski
(2) Husoysund—Tonsberg channel (2) Szczecin, port
(3) Tonsberg inner harbor (3) Swinoujscie—Szczecin, fairway
(4) Vestfjord (Tonsberg) (4) Swinoujscie, port
(5) Leistenslop (5) Sea area off Swinoujscie
(6) Vrengen
FF Russia (Baltic Coast and Gulf of Finland Coast)
(1) Tjomekjaela AA
(2) Sandefjord (1) Sankt Peterburg harbor
(3) Inside Svenner light (2) Sankt Peterburg—Kotlin (eastern point)
(4) Off Svenner light (3) Kotlin (eastern point)—Tolbukhin
(5) Larviksfjorden (Stavern—Larvik) (4) Tolbukhin—Shepelevskiy
(6) Langesundsbukta (5) Shepelevskiy—Seskar
GG (6) Seskar—Sommers
(1) Brevikfjorden (7) Sommers—Gogland (southern point)
(2) Frierfjorden (Porsgrunn, Skien) (8) Gogland (southern point)—Meridian of Kunda
(3) Jomfrulandsrenna BB
(4) Off Jomfruland (1) Vyborg harbor and Bay
(5) Skatoysundet (Kragero) (2) Vichrevoj—Sommers
(6) Langarsund (Kragero) (3) B’yerkezund
HH (4) Bol’shoy Berezovyy (eastern point)—
(1) Kragerofjorden Shepelevskiy
(2) Gronholmgapet (Risor) CC
(3) Stangholmgapet (Risor) (1) Luzhskaya Guba
(4) Lyngorfjorden (2) Luzhskaya Guba—Line between Moshchnyy and
(5) Off Lyngor Seskar
(6) Tvedestrandsfjord DD
II (1) Kaliningrad harbor
(1) Tromsoysundet (Arendal) (2) Kaliningrad—Lithuanian waters
(2) Galtesund (Arendal) (3) Kaliningrad—Polish waters
(3) Inside Torungen light (Arendal)
(4) Off Torungen light (Arendal) Sweden
(5) Grimstad AA
(6) Inside Homborsund light (1) Karlsborg—Maloren
JJ (2) Sea area off Maloren
(1) Off Homborsund light (3) Lulea—Bjornklack
(2) Lillesand (4) Bjornklack—Farstugrunden
(3) Kristiansandsfjorden (5) E and SE of Farstugrunden
(4) Off Iksoy light (Kristiansand) (6) Sandgronn fairway
(7) Rodkallen—Norstromsgrund
Poland BB
3 - 25
(1) Haraholmen—Nygran (2) Vasteras—Gronso

(2) Sea area off Nygran (3) Gronso—Sodertalje
(3) Skelleftehamn—Gasoren (4) Stockholm—Sodertalje
(4) Sea area off Gasoren (5) Sodertalje—Fifong
(5) Sea area off Bjuroklubb (6) Fifong—Landsort
CC LL
(1) NE of Nordvalen (1) Norrkoping—Hargokalv
(2) SW of Nordvalen (2) Hargokalv—Vinterklasen—Norra Krankan
(3) Vastra Kvarken (W of Holmoarne) (3) OxelosundHarbor
(4) Umea—Vaktaren (4) Jarnverket—Lillhammaren— Norra Krankan
(5) SE of Vaktaren (5) Sea area off Gustafe Dalen
(6) Sea area NE and SE of Sydostbrotten MM
DD (1) Sea area W of Gotska Sandon
(1) Fairway to Husum (2) Sea area off Visby
(2) Ornskoldsvik—Hornskaten (3) W of Stora Karlso
(3) Hornskaten—Skagsudde (4) Sea area off Hoburgen
(4) Sea area off Skagsudde (5) Sea area off Mago (Slite)
(5) Fairway W of Ulvoarna (6) Sea area off Faro
(6) Sea area off Ulvoarna NN
EE (1) Vastervik—Marsholmen—Ido
(1) Angermanalven above Sando bridge (2) Sea area off Ido
(2) Angermanalven below Sando bridge (3) Oskarshamn—Furon
(3) Harnosand—Harnon (4) Furon—Olands Norra Udde
(4) Sea area off Harnon (5) Sea area off Olands Norra Udde
(5) Sundsvall—Draghallan OO
(6) Draghallan—Astholmsudde (1) Bla Jungfrun—Kalmar
(7) Sea area off Astholmsudde (2) Kalmar—Utgrunden
(8) Sea area off Bramon (3) Utgrunden—Olands Sodra Udde
FF (4) Sea area SE of Olands Sodra Udde
(1) Hudiksvallsfjarden PP
(2) Iggesund—Ago (1) Karlskrona—Aspo
(3) Sea area off Ago (2) Sea area off Aspo
(4) Sandarne—Hallgrund (3) Fairway to Karlshamn
(5) Sea area off Hallgrund (4) Fairway to Ahus
(6) Ljusnefjarden—Storjungfrun (5) Sea area off Sandhammaren
(7) Sea area off Storjungfrun (6) Fairway to Trelleborg
GG (7) Sea area SE of Falsterbo Rev
(1) Gavle—Eggegrund RR
(2) Sea area off Eggegrund (1) Sea area N of Falsterbo Rev
(3) Sea area off Orskar (2) Drogden Passage
(4) Oregrundsgrepen (3) Flintrannan
(5) Passage at Grundkallen (4) Fairway to Malmo
HH (5) The Sound between Malmo and Ven
(1) Passage at Understen (6) The Sound E of Ven
(2) Sea area off Svartklubben (7) The Sound off Halsingborg
(3) Hallstavik—Svartklubben (8) W and S of Kullen
(4) Sea area at Soderarm and Tjarven SS
(5) Sea area off Svenska Hogarna (1) Fairway to Halmstad
II (2) Fairway to Valberg
(1) Stockholm—Tralhavet—Klovholmen (3) Sea area W of Nidingen
(2) Tralhavet—Furusund—Kappelskar (4) Knippelholmen—Botto
(3) Kappelskar—Soderarm (5) Vinga Sand and Danafjord
(4) Klovholmen—Sandhamn (6) Buskar—Trubaduren—Vinga
(5) Sea area off Sandhamn (7) Off Trubaduren and Vinga
(6) Trollharan—Langgarn TT
(7) Mysingen (1) Uddevalla—Stenungsund
(8) Nynashamn—Landsort (2) Stenungsund—Hatteberget
(9) Sea area S of Landsort (3) Sea area off Hatteberget
KK (4) Sea area off Maseskar
(1) Koping—Kvicksund (5) Brofjorden—Dynabrott
3 - 26
(6) Sea area off Dynabrott and Gaven routine weather broadcasts and substitute special warning
(7) Kosterfjorden messages.
(8) Sea area off Nordkoster NOAA Weather Radio broadcasts are received on one of
UU seven VHF channels listed below. These channels are
(1) Gota Alv generally designated on marine VHF equipment as WX-1
(2) Trollhatte canal—Dalbo bridge through WX-7. These broadcasts usually can be received
(3) Vanersborgsviken within 40 miles of the antenna site.
(4) Fairway through Luro archipelago
(5) Fairway to Gruvon NOAA Weather Radio VHF Channels
(6) Fairway to Karlstad WX-1 162.550 MHz
(7) Fairway to Kristinehamn WX-2 162.400 MHz
(8) Fairway to Otterbacken WX-3 162.475 MHz
(9) Fairway to Lidkoping WX-4 162.425 MHz
WX-5 162.450 MHz
WX-6 162.500 MHz
300L. Navigational Warning Station List WX-7 162.525 MHz
The stations in the following list broadcast navigational A list of broadcast stations and frequencies may be
warnings, including ice information. Where these stations obtained from the NOAA Weather Radio Website at:
also provide weather and other miscellaneous http://www.nws.noaa.gov/nwr/
information, those broadcast times and frequencies are
included. Stations providing only weather information, or from the NWS at the following address:
however, are omitted. For information and schedules of
marine weather broadcasts made primarily in English, NATIONAL WEATHER SERVICE
refer to the Selected Worldwide Marine Weather ATTN: W/OM12
Broadcasts (WWMARWETHRBC),a joint publication of NOAA
the National Weather Service (NWS) and Naval 1325 EAST WEST HIGHWAY
Oceanography Command. SILVER SPRING MD 20910
Broadcasts are in English unless otherwise indicated.
NOAA Weather Radio is a service providing specialized The NWS Marine Product Dissemination Information
weather broadcasts for maritime users along the U.S. Homepage is internet accessible through the World Wide
coastline, Great Lakes, Puerto Rico, the Virgin Islands, Web at:
Guam and Saipan. It provides continuous broadcasts of the http://www.nws.noaa.gov/om/marine/home.htm
latest weather information directly from National Weather
Service (NWS) offices. Taped weather messages are Information available includes forecasts and warnings,
repeated every four to six minutes and are routinely revised up-to-date marine weather charts, including those
every one to three hours, or more frequently if needed. broadcast by the Coast Guard over HF radiofacsimile, and
During severe weather, NWS forecasters can interrupt the the NOAA Weather Radio Guide.
3 - 27
(1) (2) (3) (4) (5)

No. Name Frequency Times Nature of Broadcast
GREENLAND
3001.5 Qaqortoq (OXF). 2129, 2225, 2265 kHz, J3E. 0035, 0335, 0635, 0935, 1235, Local navigational warnings.
1535, 1835, 2135.
2129, 2225, 2265 kHz, J3E, 0805, 1305, 1805, 2305 (1 hr. Weather.
Ch. 01, 02, 03, 04, 23, 24, 25, earlier when daylight savings in
26, 27, 28, F3E. effect).
2129, 2225, 2265 kHz, J3E, On request. Weather and ice.

Ch. 01, 02, 03, 04, 23, 24, 25,
26, 27, 28, F3E.
3002 Ammassalik (OZL). 2250, 3250 kHz, J3E. 0120, 0420, 0720, 1020, 1320, Local navigational warnings.
1620, 1920, 2220.
2250, 3250, 4381 kHz, J3E, 0805, 1305, 1805, 2305 (1 hr. Weather.
Ch. 25, 26, 27, F3E. earlier when daylight savings in
effect).
2250, 3250, 4381 kHz, J3E, On request. Weather and ice.

Ch. 25, 26, 27, F3E.
3003 Greenland Radio. 570, 650, 720, 810, 900 kHz, 2030 (Mon. - Fri.), Local navigational warnings.
A3E, 90.5, 92, 95, 95.2, 95.4, 2100 (Sat., Sun.).
95.5, 96, 96.25, 97, 98.5, 98.7
MHz, F3E.
570, 650, 720, 810, 900 kHz, 0200, 1000, 1145, 1545, 2030 Weather.
A3E, 90.5, 92, 95, 95.2, 95.4, (Mon. - Sat.).
95.5, 96, 96.25, 97, 98.5, 98.7
MHz, F3E.
570, 650, 720, 810, 900 kHz, 0200, 1100, 1500, 2100 (Sun., Weather.
A3E, 90.5, 92, 95, 95.2, 95.4, Hol.).
95.5, 96, 96.25, 97, 98.5, 98.7
MHz, F3E.
3005 Nuuk (Kook Island). 518 kHz, F1B. 0340, 0740, 1140, 1540, 1940, NAVTEX [W]. On trial.
2340.
3015 Aasiaat (OYR). 2116, 2304, 2400, 3125, 0235, 0535, 0835, 1135, 1435, Local navigational warnings.
3276, 3280 kHz, J3E. 1735, 2035, 2335.
2116, 2304, 2400, 3125, 0805, 1305, 1805, 2305 (1 hr. Weather.
3276, 3280, 4381, 6522 kHz, earlier when daylight savings in
J3E, Ch. 01, 02, 03, 04, 23, effect).
24, 25, 26, 27, 28, 60, 63,
F3E..
2116, 2304, 2400, 3125, On request. Weather and ice.

3276, 3280, 4381, 6522 kHz,
J3E, Ch. 01, 02, 03, 04, 23,
24, 25, 26, 27, 28, 60, 63,
F3E..
3 - 28
(1) (2) (3) (4) (5)

CANADA - ARCTIC AND ATLANTIC
3017 Iqaluit, N.T. (VFF). 2514, 6513 kHz, J3E. 0110, 1320, 1705. Local navigational warnings, weather and ice (ice
only at 1705).
2514, 2582, 4363 kHz, J3E. 1340, 1705, 2235. Local navigational warnings, weather and ice (ice
only at 1705).
3251.1, 7708.1 kHz (USB), 1000, 2100. Weather FAX; 120/576.

J3C.
3251.1, 7708.1 kHz (USB), 0500, 2125. Ice FAX; 120/576.

J3C.
2582, 4363 kHz, J3E. 1240, 1705, 2310. Local navigational warnings, weather and ice (ice
only at 1705) (Resolute).
3251.1, 7708.1 kHz (USB), 1100, 2330. Weather FAX; 120/576 (Resolute).
J3C.
3251.1, 7708.1 kHz (USB), 0010, 0700. Ice FAX; 120/576 (Resolute).
J3C.
490 kHz, F1B. 0300, 0700, 1100, 1500, 1900, NAVTEX [S] in French.
2300.
518 kHz, F1B. 0310, 0710, 1110, 1510, 1910, NAVTEX [T].
2310.
NOTE: Station open during navigation season only, Jun. - Dec.
3018 Inuvik, N.W.T. (VFA). 2558, 4363, 6218.6 kHz, J3E, 0235, 1435. Local navigational warnings and weather.
Ch. 26, F3E.
4363, 5803 kHz, J3E, Ch. 26, 0115, 1315. Local navigational warnings and weather.
F3E.
8457.8 kHz (USB), J3C. 0200, 1630. Weather and ice FAX; 120/576.
NOTE: During navigation season only, May - Oct.
3019.5 Labrador, Labr. (VOK). 2598 kHz, J3E. 0137, 1007, 1437, 2037. Weather and ice.
2598 kHz, J3E. 1107, 2307. Local navigational warnings.
Ch. 21B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
518 kHz, F1B. 0350, 0750, 1150, 1550, 1950, NAVTEX [X].
2350; 0910, 2110 (Jul. - Oct.).
3020 St. Anthony, Nfld. (VCM). 2598 kHz, J3E. 0107, 0907, 1337, 1937. Weather and ice (ice at 0107, 0907).
2598 kHz, J3E. 1237, 1907. Local navigational warnings and ice (ice at 1907).
3021 Port aux Basques, Nfld. (VOJ). 2598 kHz, J3E. 0207, 0807, 1507, 2107. Weather and ice (ice at 0807).
2598 kHz, J3E, Ch. 21B, 28B, 1207, 1837. Local navigational warnings and ice (ice at 1837).
83B, F3E.
Ch. 21B, 28B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
3023 St. John's, Nfld. (VON). 2598 kHz, J3E. 0007, 0837, 1637, 2207. Weather and ice.
518 kHz, F1B. 0220, 0620, 1020, 1420, 1820, NAVTEX [O].
2220.
3027.5 Placentia, Nfld. (VCP). 2598 kHz, J3E. 0048, 0737, 1607, 2137. Weather and ice (ice at 0737, 2137).
Ch. 21B, 23B, 28B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
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(1) (2) (3) (4) (5)

3032 Quebec, Que. (VCC). Ch. 21B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
3036 Montreal, Que. (VFN). Ch. 21B, 25B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
(Seasonal operation May - Oct. on Ch. 83B.)
3038 Les Escoumins, Que. (VCF). Ch. 21B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
3040 Riviere-au-Renard, Que. (VCG). 2598, 2749 kHz, J3E. 0937, 1737. Local navigational warnings and ice.
2598, 2749 kHz, J3E. 0437, 0847, 1407, 2317. Weather.
518 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [C].
2020.
518 kHz, F1B. 0035, 0435, 0835, 1235, 1635, NAVTEX [D] in French.
2035.
3042 Sydney, N.S. (VCO). 2749 kHz, J3E, Ch. 21B, 83B, 0040, 1440. Local navigational warnings and weather.
F3E.
2749 kHz, J3E. 0740, 1940. Weather.
Ch. 21B, 83B, F3E. 1010. Local navigational warnings.
4416 kHz, J3C. 2200, 2331. Ice FAX; 120/576.
6915.1 kHz, J3C. 1121, 1142, 1741. Ice FAX; 120/576.
518 kHz, F1B. 0240, 0640, 1040, 1440, 1840, NAVTEX [Q].
2240.
518 kHz, F1B. 0255, 0655, 1055, 1455, 1855, NAVTEX [J] in French.
2255.
3045 Halifax, N.S. (VCS) (CFH). 2749 kHz, J3E. 0240, 1540. Local navigational warnings.
2749 kHz, J3E. 0240, 0810, 1540, 2010. Weather.
Ch. 21B, 83B, F3E. 0240, 1110, 1540. Local navigational warnings.
Ch. 21B, 83B, F3E. Continuous. Weather.
122.5 MHz, 4271, 6496.4, 0000, 0100, 0300, 0600, 0700, Weather.
10536, 13510 kHz, F1B. 0800, 0900, 1100, 1400, 1500,
1700, 1900, 2000, 2100, 2300.
122.5 MHz, 4271, 6496.4, Continuous. Weather FAX*; 120/576.

10536, 13510 kHz, J3C.
122.5 MHz, 4271, 6496.4, 0001, 2222, 2301. Ice FAX*; 120/576.
10536, 13510 kHz, J3C.
*NOTE: CFH broadcast schedule at 1101.
3047 Saint John, N.B. (VAR). 2749 kHz, J3E, Ch. 21B, 83B, 0140, 1040, 1640, 2040. Weather.
F3E.
2749 kHz, J3E, Ch. 21B, 83B, 0140, 1640. Local navigational warnings.
F3E.
Ch. 21B, 83B, F3E. 1240. Local navigational warnings.
Ch. 21B, 83B, F3E. Continuous. Weather.
518 kHz, F1B. 0320, 0720, 1120, 1520, 1920, NAVTEX [U].
2320.
518 kHz, F1B. 0335, 0735, 1135, 1535, 1935, NAVTEX [V] in French.
2335.
ST. PIERRE AND MIQUELON
3050 St. Pierre Radio. 1375 kHz, A3E. 1050, 1130, 1515, 2150. Weather in French.
3 - 30
(1) (2) (3) (4) (5)

UNITED STATES AND CANADA - LAKES
3068 Wiarton, Ont. 518 kHz, F1B. 0110, 0510, 0910, 1310, 1710, NAVTEX [H].
2110.
3069 Prescott, Ont. (VBR). Ch. 21B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
3070 Sarnia, Ont. (VBE). Ch. 21B, 83B, F3E. Continuous. Local navigational warnings, weather and ice.
LOCAL WARNINGS:
Local Notice to Mariners:
Original reports to nearest Coast Guard station for relay to District Commander (oan).
3074 Sault St. Marie, MI (NOG) Ch. 22A, F3E. 0005, 1205. Local Notice to Mariners and weather.
U.S. Coast Guard.
3076 Buffalo, NY (NMD-47) Ch. 22A, F3E. 0255, 1455. Local Notice to Mariners and weather.
U.S. Coast Guard.
3077 Detroit, MI (NMD-25) Ch. 22A, F3E. 0135, 1335. Local Notice to Mariners and weather.
U.S. Coast Guard.
3078 Grand Haven, MI (NMD-32) Ch. 22A, F3E. 0235, 1435. Local Notice to Mariners and weather.
U.S. Coast Guard.
3079 Milwaukee, WI (NMP-9) Ch. 22A, F3E. 0255, 1455. Local Notice to Mariners and weather.
U.S. Coast Guard.
3080 Thunder Bay, Ont. (VBA). 2582 kHz, J3E, Ch. 26, F3E. 0040, 1410. Local navigational warnings and weather.
2582 kHz, J3E, Ch. 26, F3E. 0040, 1520. Ice.
Ch. 19, 26, F3E. 0140, 0840, 1240, 1640, 2140. Local navigational warnings and weather.
518 kHz, F1B. 0230, 0630, 1030, 1430, 1830, NAVTEX [P].
2230.
UNITED STATES - ATLANTIC AND GULF
LONG-RANGE WARNINGS:
NAVAREA IV:
Original reports to NAVAREA IV Coordinator, National Geospatial-Intelligence Agency, Attn: PVM (Mail stop D-44).
HYDROLANT:
Original reports to National Geospatial-Intelligence Agency.
LOCAL WARNINGS:
Original reports to nearest Coast Guard Station for relay to District Commander (oan).
3083 Southwest Harbor, ME (NMF-44) 2670 kHz, J3E, Ch. 22A, F3E. 1135, 2335. Local Notice to Mariners and weather.
U.S. Coast Guard.
3084 Portland, ME (NMF-31) 2670 kHz, J3E, Ch. 22A, F3E. 1105, 2305. Local Notice to Mariners and weather.
U.S. Coast Guard.
3 - 31
(1) (2) (3) (4) (5)

3086 Boston, MA (NMF) (NIK) 6314, 8416.5, 12579 kHz, F1B. 0030. Ice (seasonal).
(NMF-7) U.S. Coast Guard.
6314, 8416.5, 12579 kHz, F1B. 0140. Maritime Safety Information (MSI) (HF NBDP)
(NAVAREA IV, HYDROLANT and weather).
8416.5, 12579, 16806.5 kHz, 1218. Ice (seasonal).

F1B.
8416.5, 12579, 16806.5 kHz, 1630. Maritime Safety Information (MSI) (HF NBDP)
F1B. (NAVAREA IV, HYDROLANT and weather).
4235 kHz, F3C. 0230, 0745. Weather FAX*; 120/576.
6340.5, 9110 kHz, F3C. 0230, 0745, 1400, 1720, 1900. Weather FAX*; 120/576.
6340.5, 9110, 12750 kHz, 1600, 1810. Ice FAX; 120/576 (Feb. - Aug.).
F3C.
2670 kHz, J3E, Ch. 22A, F3E. 1035, 2235. Local Notice to Mariners and weather.
518 kHz, F1B. 0045, 0445, 0845, 1245, 1645, NAVTEX [F].
2045.
*NOTE: Broadcast schedule at 0243, 1405.
3087 Woods Hole, MA (NMF-2) 2670 kHz, J3E. 0440, 1640. Local Notice to Mariners and weather.
U.S. Coast Guard.
Ch. 22A, F3E. 1005, 2205. Local Notice to Mariners and weather.
3088.5 Long Island Sound, CT Ch. 22A, F3E. 1120, 2320. Local Notice to Mariners and weather.
(NMY-15) U.S. Coast Guard.
3088.6 Moriches, NY (NMY-42) 2670 kHz, J3E, Ch. 22A, F3E. 0010, 1210. Local Notice to Mariners and weather.
U.S. Coast Guard.
3088.7 New York, NY (NMY-3) Ch. 22A, F3E. 1050, 2250. Local Notice to Mariners and weather.
U.S. Coast Guard.
3090.7 Atlantic City, NJ (NMK-2) 2670 kHz, J3E, Ch. 22A, F3E. 1103, 2303. Local Notice to Mariners and weather.
U.S. Coast Guard.
3092 Baltimore, MD (NMX) Ch. 22A, F3E. 0130, 1205. Local Notice to Mariners and weather.
U.S. Coast Guard.
3093 Chincoteague, VA (NMN-70) 2670 kHz, J3E. 0233, 1403. Local Notice to Mariners and weather.
U.S. Coast Guard.
3096 Chesapeake, VA (NMN) 4426, 6501, 8764, kHz, J3E. 0330, 0500, 0930. Maritime Safety Information (MSI).
(NMN-80) U.S. Coast Guard.
6501, 8764, 13089 kHz, J3E. 1130, 1600, 2200, 2330. Maritime Safety Information (MSI).
8764, 13089, 17314 kHz, J3E. 1730. Maritime Safety Information (MSI).
2670 kHz, J3E. 0203, 1333. Local Notice to Mariners and weather.
518 kHz, F1B. 0130, 0530, 0930, 1330, 1730, NAVTEX [N].
2130.
3099 Cape Hatteras, NC (NMN-13) 2670 kHz, J3E. 0133, 1303. Local Notice to Mariners and weather.
U.S. Coast Guard.
3099.5 Fort Macon, NC (NMN-37) 2670 kHz, J3E, Ch. 22A, F3E.. 0103, 1233. Local Notice to Mariners and weather.
U.S. Coast Guard.
3100 Charleston, SC (NMB) 2670 kHz, J3E. 0420, 1620. Local Notice to Mariners and weather.
U.S. Coast Guard.
3101 Savannah, GA (NMN) 518 kHz, F1B. 0040, 0440, 0840, 1240, 1640, NAVTEX [E].
U.S. Coast Guard. 2040.
3 - 32
(1) (2) (3) (4) (5)

3102 Mayport, FL (NMV) 2670 kHz, J3E. 0620, 1820. Local Notice to Mariners and weather.
U.S. Coast Guard.
3104 Miami, FL (NMA) (NCF) 2670 kHz, J3E. 0350, 1550. Local Notice to Mariners and weather.
U.S. Coast Guard.
518 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [A].
2000.
3106 Key West, FL (NOK) Ch. 22A, F3E. 1200, 2200. Local Notice to Mariners and weather.
U.S. Coast Guard.
3107.8 St. Petersburg, FL (NME) 2670 kHz, J3E. 0320, 1420. Local Notice to Mariners and weather.
U.S. Coast Guard.
3108 New Orleans, LA (NMG) 2670 kHz, J3E. 0550. Local Notice to Mariners and weather.
(NMG-2) U.S. Coast Guard.
2670 kHz, J3E, Ch. 22A, F3E. 1035, 1235, 1635, 2235. Local Notice to Mariners and weather.
4316, 8502, 12788 kHz, J3E. 0330, 0500, 0930, 1130, 1600, Local Notice to Mariners and weather.
1730, 2200, 2330.
4317.9, 8503.9, 12789.9 kHz, 0000, 0600, 1200, 1800. Weather FAX*; 120/576.
F3C.
17146.4 kHz, F3C. 1200, 1800. Weather FAX*; 120/576.
518 kHz, F1B. 0300, 0700, 1100, 1500, 1900, NAVTEX [G].
2300.
*NOTE: Broadcast schedule at 2025.
3111 Mobile, AL (NOQ) 2670 kHz, J3E, Ch. 22A, F3E. 1020, 1220, 1620, 2220. Local Notice to Mariners and weather.
U.S. Coast Guard.
3112 Galveston, TX (NOY) 2670 kHz, J3E, Ch. 22A, F3E. 1050, 1250, 1650, 2250. Local Notice to Mariners and weather.
U.S. Coast Guard.
3116 Corpus Christi, TX (NOY-8) 2670 kHz, J3E, Ch. 22A, F3E. 1040, 1240, 1640, 2240. Local Notice to Mariners and weather.
U.S. Coast Guard.
MEXICO
3118 Veracruz (XFU). 451 kHz, A1A. 0300, 1600, 2100. Local navigational warnings.
8656 kHz, A1A. 1600, 2100. Local navigational warnings.
451, 8656 kHz, A1A. 0400, 1600, 2100. Weather.
CUBA
3119 Santiago de Cuba (CLM). 2760 kHz, J3E. 2340. Local navigational warnings in Spanish.
NOTE: Frequency 2760 kHz has been reported as temporarily out of service. Navigational warnings will be transmitted on VHF Ch. 64 after prior announcement on
VHF Ch. 16 until further notice.
3121 Cienfuegos (CLC). 2760 kHz, J3E. 2305. Local navigational warnings in Spanish.
3131 Habana (CLT). 2760 kHz, J3E. 2310 Local navigational warnings in Spanish.
2760 kHz, J3E. 0403, 2203. Military exercise warnings in Spanish.
2760 kHz, J3E. 0105, 1305. Weather in Spanish.
3 - 33
(1) (2) (3) (4) (5)

BERMUDA
3135 Bermuda Harbor (ZBM). 2582 kHz, J3E, Ch. 27, F3E. 0035, 0435, 0835, 1235, 1635, Local navigational warnings and weather.
2035.
162.4 MHz (WX2), J3E. Continuous. Local navigational warnings and weather.
518 kHz, F1B. 0010, 0410, 0810, 1210, 1610, NAVTEX [B].
2010.
JAMAICA
3135.5 Jamaica Coast Guard (6YX). 2738 kHz, A3E, Ch. 13, F3E. 1330, 1830. Local navigational warnings and weather.
Ch. 13, F3E. 0130, 1430, 1930. Weather.
PUERTO RICO
3138 San Juan, PR (NMR) (NMR-1) 2670 kHz, J3E. 0305, 1505. Local Notice to Mariners and weather.
U.S. Coast Guard.
518 kHz, F1B. 0200, 0600, 1000, 1400, 1800, NAVTEX [R].
2200.
MARTINIQUE
3140 Fort de France (CROSSAG) Ch. 79, F3E; 0020, 0040, 1450, 1510; Local navigational warnings and weather in
(MRCC). Ch. 80, F3E. 0030, 0050, 1500, 1520. French for Martinique, St. Lucia and Dominica.
Ch. 79, F3E; 1530, 2300; Gunfire warnings and weather in French for
Ch. 80, F3E; 1540, 1600, 2310, 2330; Guadeloupe.
Ch. 64, F3E. 1550, 2320.
Ch. 64, F3E. 0000, 1630. Local navigational warnings and weather in
French for St. Martin and Antigua.
2545 kHz, J3E. 1215, 2133. Weather in French.
2545 kHz, J3E. Every even hour. Weather.
Ch. 64, 79, 80, F3E. Every hour. Weather.
Ch. 79, F3E; 1120, 1140, 2220, 2240; Weather in French for Martinique, St. Lucia and
Ch. 80, F3E; 1130, 1150, 2230, 2250. Dominica.
Ch. 79, F3E; 0100, 1200; Weather in French for Guadeloupe.

Ch. 80, F3E; 0110, 0130, 1210, 1230;
Ch. 64, F3E. 0120, 1220.
Ch. 64, F3E. 0200, 1300. Weather in French for St. Martin and Antigua.
TRINIDAD AND TOBAGO
3143 North Post (9YL) 2735, 3165 kHz, J3E. 1250, 1850. Local navigational warnings (weather on 3165
(Trinidad). kHz).
8441 kHz, A1A. 0100, 0600, 0900, 1300, 1500, Weather.

1730, 2130.
17184.8 kHz, A1A. 1200, 1530. Weather.
12885 kHz, A1A. 1330, 2050. Weather.
Ch. 24, 25, 26, 27, F3E. 1340, 2040. Weather.
6470.5 kHz, A1A. 2300. Weather.
NETHERLANDS ANTILLES
3145 Curacao (PJC). 518 kHz, F1B. 0110, 0510, 0910, 1310, 1710, NAVTEX [H].
2110.
3 - 34
(1) (2) (3) (4) (5)

BRAZIL
NAVAREA V:
Includes the waters west of 20°W between 7°N and 35°S, subdivided into the following areas: North Coast, East Coast and South Coast. Navigational aids are
referred to by International numbers; the term “number of order” refers to Brazilian Light List numbers. Original reports are addressed “NAVEMAR” and handled by
Brazilian government stations without charge.
3150 Belem (PPL). 4321 kHz, A1A. 0600. Local navigational warnings in Portuguese,
NAVAREA V.
8462 kHz, A1A. 1800. Local navigational warnings in Portuguese,

NAVAREA V.
8462 kHz, A1A. 1000. Weather.
4369 kHz, J3E. 0103, 0603, 1003, 1203, 1503, Local navigational warnings and weather in
2103. Portuguese, NAVAREA V.
3151 Belem Radio Liberal (ZYI-533). 1330 kHz. 0100, 0900, 1700. Local navigational warnings.
3152 Belem Radio Marajoara 1130 kHz. 0200, 0930, 1800. Local navigational warnings.
(ZYI-531).
3153 Ponta do Ceu. Ch. 16, F3E. 0000, 1200, 1800. Local navigational warnings.
3154 Radio Nacional de Macapa 630 kHz. 1100, 1600, 2130. Local navigational warnings.
(ZYH-222).
3157 Olinda (PPO). 4321 kHz, A1A. 0200. Local navigational warnings in Portuguese,
NAVAREA V.

NAVAREA V.
8294 kHz, F3C. 0745-0830, 1745-1830. Weather FAX; 120/576
3161 Rio de Janeiro Naval (PWZ-33). 4289, 6435, 8550, 12795, 0500, 1330, 2230. NAVAREA V and local navigational warnings.
17160, 22530 kHz, A1A.
4289, 6435, 8550, 12795, 0400, 1230, 2130. NAVAREA V and local navigational warnings.
17160, 22530 kHz, F1B.
12660, 17140 kHz, F3C. 0745-0830, 1745-1830. Weather FAX; 120/576.
4289, 6435, 8550, 12795, 0215, 0945, 1945. Weather.

17160, 22530 kHz, A1A.
4289, 6435, 8550, 12795, 0115, 0845, 1845. Weather.

17160, 22530 kHz, F1B.
3166 Juncao (PPJ). 4321 kHz, A1A. 0800. Local navigational warnings in Portuguese,
NAVAREA V.

NAVAREA V.
3 - 35
(1) (2) (3) (4) (5)

URUGUAY
3168 La Paloma (CWC-30) (CWS-27). 2722.1, 4146 kHz, J3E, Ch. 0600, 1200, 1900. Local navigational warnings and weather in
15, F3E. Spanish.
490 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [A] in Spanish.
2000.
518 kHz, F1B. 0050, 0450, 0850, 1250, 1650, NAVTEX [F].
2050.
3169 Punta del Este (CWC-34). 2722.1 kHz, J3E, Ch. 15, F3E. 0133, 1503, 2133. Local navigational warnings and weather in
Spanish.
3169.5 Punta Carretas (CWF). 2768.5 kHz, H3E, J3E, R3E. 0000, 1400, 1900. Local navigational warnings and weather in
Spanish.
4357.4, 6518.8, 8291.1, 0003, 1403, 1903. Local navigational warnings and weather in
13128.7, 17260.8, 22636.3 Spanish.
kHz, J3E, R3E.
3170 Cerrito (CWA). 421.5 kHz, A1A, A2A, 4346, 1100, 1600, 2100. Local navigational warnings and weather in
8602, 12750, 17230 kHz, A1A. Spanish.
3176.1 Montevideo Trouville (CWC-39) 2722.1, 4146 kHz, J3E, Ch. 0103, 1133, 1903. Local navigational warnings and weather in
(CWC). 15, F3E. Spanish.
3177 Colonia (CWC-23). 2722.1 kHz, J3E, Ch. 15, F3E. 0333, 1333, 2103. Local navigational warnings and weather in
Spanish.
3178 Nueva Palmira (CWC-31). Ch. 15, F3E. 0033, 1033, 1803 Local navigational warnings and weather in
Spanish.
ARGENTINA
NAVAREA VI:
Includes the waters between the coast of Argentina and 20°W between 35°50′S and Antarctica. Original reports to NAVAREA VI Coordinator, Hidrografia Naval,
Buenos Aires.
3182 Buenos Aires (L2B) (L2G). 4210, 8416.5, 12579, 16806.5 0030, 1530, 2100. Maritime Safety Information (MSI) (HF NBDP)
kHz, F1B. (NAVAREA VI).
4210, 8416.5, 12579 kHz, F1B. 1000, 1900. Maritime Safety Information (MSI) (HF NBDP)
(Local navigational warnings).
16806.5 kHz, F1B. 1900. Maritime Safety Information (MSI) (HF NBDP)
(Local navigational warnings).
4210, 8416.5, 12579 kHz, F1B. 0300, 1400. Maritime Safety Information (MSI) (HF NBDP)
(Weather).
16806.5 kHz, F1B. 1400. Maritime Safety Information (MSI) (HF NBDP)
(Weather).
Ch. 15, F3E. 0010, 0410, 0810, 1210, 1610, Local navigational warnings and weather in
2010. Spanish.
Ch. 21, F3E. Every hour +00m, +15m, +30m, Local navigational warnings and weather in
+45m. Spanish.
518 kHz, F1B. 0650, 1450, 2250. NAVTEX [R].
518 kHz, F1B. 0250, 1050, 1850. NAVTEX [R] in Spanish.
3184 Mar del Plata (L2U). Ch. 15, F3E. 0230, 0530, 1130, 1730, 2330. Local navigational warnings and weather in
Spanish.
518 kHz, F1B. 0640, 1440, 2240. NAVTEX [Q].
518 kHz, F1B. 0240, 1040, 1840. NAVTEX [Q] in Spanish.
3186 Recalada Rio de la Plata (L3Z). Ch. 15, F3E. 0040, 0440, 0840, 1240, 1640, Local navigational warnings and weather in
2040. Spanish.
3191 Quequen (L5B). Ch. 15, F3E. 0010, 0410, 0810, 1210, 1610, Local navigational warnings and weather in
2010. Spanish.
3 - 36
(1) (2) (3) (4) (5)

3192 Bahia Blanca (L2J) (L2N). 2065, 4149, 8294 kHz, J3E. 0010. Local navigational warnings in Spanish.
4149, 8294, 12353 kHz, J3E. 1210. Local navigational warnings in Spanish.
2065, 4149, 8294 kHz, J3E. 0440. Weather in Spanish.
4149, 8294, 12353 kHz, J3E. 1740. Weather in Spanish.
2010. Spanish.
518 kHz, F1B. 0630, 1430, 2230. NAVTEX [P].
518 kHz, F1B. 0230, 1030, 1830. NAVTEX [P] in Spanish.
3193 Puerto Madryn (L4S). Ch. 15, F3E. 0010, 0410, 0810, 1210, 1610, Local navigational warnings and weather in
2010. Spanish.
3196 Comodoro Rivadavia (L2W) 4210, 8416.5, 12579 kHz, F1B. 2300. Maritime Safety Information (MSI) (HF NBDP)
(L3B). (Local navigational warnings).
F1B. (Local navigational warnings).
4210, 8416.5, 12579 kHz, F1B. 0530. Maritime Safety Information (MSI) (HF NBDP)
(Weather).
F1B. (Weather).
Ch. 15, F3E. 0350, 0750, 1050, 1650, 2250. Local navigational warnings and weather in
Spanish.
518 kHz, F1B. 0620, 1420, 2220. NAVTEX [O].
518 kHz, F1B. 0220, 1020, 1820. NAVTEX [O] in Spanish.
3204 Rio Gallegos (L3I). 2065, 4149 kHz, J3E. 0740. Local navigational warnings in Spanish.
4149, 8294 kHz, J3E. 2040. Local navigational warnings in Spanish.
2065, 4149 kHz, J3E. 0440. Weather in Spanish.
4149, 8294 kHz, J3E. 1740. Weather in Spanish.
2010. Spanish.
518 kHz, F1B. 0610, 1410, 2210. NAVTEX [N].
518 kHz, F1B. 0210, 1010, 1810. NAVTEX [N] in Spanish.
3208 Ushuaia (L3P). Ch. 15, F3E. 0010, 0410, 0810, 1210, 1610, Local navigational warnings and weather in
2010. Spanish.
518 kHz, F1B. 0600, 1400, 2200. NAVTEX [M].
518 kHz, F1B. 0200, 1000, 1800. NAVTEX [M] in Spanish.
ANTARCTICA
3209 Casey (VLM) (Australia). 7470 kHz, F3C. Continous. Weather FAX*; 120/576.
3210 Centro Meteorologico Antartico 2401, 4807, 9951 kHz, F1B. 0025, 0325, 0625, 0925, 1225, Weather.
Vcom. Marambio (LSB) 1525, 1825, 2125.
(Argentina).
2401, 4807, 9951 kHz, F1B. 1525 (Tue., Thu.). Ice.
3211 Palmer Station (KWB-268) 4553 kHz, F1B. 0100. Ice.

(USA).
13553 kHz, F1B. 1500. Ice.
10235 kHz, F1B. 2000. Ice.
3 - 37
(1) (2) (3) (4) (5)

ICELAND
3212 Reykjavik (TFA). 438 kHz, A1A. 0530, 1130, 1730, 2330. Local navigational warnings, weather and ice.
1650 kHz, A3E. 0430. Local navigational warnings, weather and ice in
Icelandic.
1876 kHz, J3E. 0533, 1133, 1733, 2333. Weather.
490 kHz, F1B. 0320, 0720, 1120, 1520, 1920, NAVTEX [R] in Icelandic.
2320.
518 kHz, F1B. 0250, 0650, 1050, 1450, 1850, NAVTEX [R].
2250.
518 kHz, F1B. 0350, 0750, 1150, 1550, 1950, NAVTEX [X]* (East Coast Greenland broadcast
2350. for Denmark).
*NOTE: On trial.
3212.5 Icelandic State Broadcasting 209, 666, 738 kHz, A3E. 1010, 1245, 1615, 1845, 2215. Ice in Icelandic.
Service.
209 kHz, A3E. 0100. Weather and ice in Icelandic.
209, 666, 738 kHz, A3E. 0645, 0815, 1010, 1615, 1845, Weather in Icelandic.
2215.
JAN MAYEN
3214 Jan Mayen (LMJ). 1743 kHz, J3E, Ch. 16, G3E. On request. Local navigational warnings and ice.
1743 kHz, J3E. 1203, 2303. Weather.
FAROE ISLANDS
3215 Torshavn (OXJ). 1641 kHz, A3E, Ch. 23, 24, Every even hour +35m. Local navigational warnings and weather.
25, 26, F3E.
BJORNOYA
3216 Bjornoya (LGP) (LJB). 1722 kHz, J3E, Ch. 16, G3E. On request. Local navigational warnings, weather and ice.
1757 kHz, J3E, Ch. 12, G3E. 1005, 2205. Weather.
SVALBARD
3218 Svalbard (LGS). 1731 kHz, J3E, Ch. 25, 26, 0003, 0803, 1203. Local navigational warnings (ice on request).
27, G3E.
1731, 4357 kHz, J3E. 1203, 2303. Weather.
518 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [A].
2000.
RUSSIA - NORTHERN COASTS
NAVIP:
World-wide navigational warnings.
LOCAL WARNINGS:
PRIP.
3224 Murmansk (UDK) (UDK2). 521.5, 6393.5, 13050 kHz, 0400, 1730. PRIP warnings.
F1B.
521.5, 6393.5, 13050 kHz, 0420, 1740. Weather in Russian.

F1B.
6446, 7907, 8444 kHz, F3C. 0700, 0800, 1400, 1430, 2000. Weather and ice FAX*; 120/576.
518 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [C].
2020.
*NOTE: Broadcast schedule at 1850 (RPM/IOC: 90/576).
3 - 38
(1) (2) (3) (4) (5)

3226 Arkhangel'sk (UGE). 446 kHz, F1B. 0510, 0530, 1710, 1730. Local navigational warnings in Russian.
2595 kHz, J3E. 0633, 1833. Local navigational warnings in Russian.
518 kHz, F1B. 0050, 0450, 0850, 1250, 1650, NAVTEX [F].
2050.
3232 Dickson (UCI). 428.6 kHz, F1B. 0818, 2018. Local Navigational warnings in Russian.
3235 Pevek. 148 kHz, F3C. 0530-0730, 1130-1330, Ice FAX, 90/576.
1430-1630.
NORWAY
3242 Vardo (LGV). 1635, 1695, 1713 kHz, J3E, 0233, 0633, 1033, 1433, 1833, Local navigational warnings and weather (ice on
Ch. 04, 23, 24, 25, 26, 27, 2233. request).
G3E.
1635, 1695, 1713 kHz, J3E. 1203, 2303. Weather.
518 kHz, F1B. 0330, 0730, 1130, 1530, 1930, NAVTEX [V].
2330.
3244 Bodo (LGP). 1659, 1710, 1770 kHz, J3E, 0333, 0733, 1133, 1533, 1933, Local navigational warnings and weather (ice on
Ch. 01, 02, 03, 04, 05, 07, 19, 2333. request).
20, 21, 23, 24, 25, 26, 27, 28,
60, 62, 63, 64, 65, 81, 84, 85,
G3E.
1659, 1710 kHz, J3E. 1203, 2303. Weather.
518 kHz, F1B. 0010, 0410, 0810, 1210, 1610, NAVTEX [B].
2010.
3248 Orlandet (LFO). 1782 kHz, J3E, Ch. 02, 03, 0133, 0533, 0933, 1333, 1733, Local navigational warnings and weather (ice on
05, 07, 24, 25, 26, 27, 28, 61, 2133. request).
62, 82, G3E.
1782 kHz, J3E. 1215, 2315. Weather.
518 kHz, F1B. 0210, 0610, 1010, 1410, 1810, NAVTEX [N].
2210.
3251 Floro (LGL). 1680 kHz, J3E, Ch. 03, 20, 0233, 0633, 1033, 1433, 1833, Local navigational warnings and weather (ice on
23, 27, 65, 78, G3E. 2233. request).
1680 kHz, J3E. 1215, 2315. Weather.
3252 Bergen (LGN). 1728 kHz, H3E, Ch. 07, 18, 0233, 0633, 1033, 1433, 1833, Local navigational warnings and weather (ice on
21, 25, G3E. 2233. request).
1728 kHz, H3E. 1215, 2315. Weather.
3254 Rogaland (LGQ). 1692 kHz, J3E, Ch. 20, 24, 0233, 0633, 1033, 1433, 1833, Local navigational warnings and weather (ice on
26, G3E. 2233. request).
1692 kHz, J3E. 1215, 2315. Weather.
518 kHz, F1B. 0150, 0550, 0950, 1350, 1750, NAVTEX [L].
2150.
3256 Farsund (LGZ). 1785 kHz, J3E, Ch. 05, 07, 0233, 0633, 1033, 1433, 1833, Local navigational warnings and weather (ice on
27, 61, G3E. 2233. request).
1785 kHz, J3E. 1215, 2315. Weather.
3258 Tjome (LGT). 1665 kHz, J3E, Ch. 02, 03, 0233, 0633, 1033, 1433, 1833, Local navigational warnings and weather (ice on
07, 24, 25, 26, 27, 62, 63, 65, 2233. request).
79, 81, 86, 87, G3E.
3 - 39
(1) (2) (3) (4) (5)

SWEDEN
Coast radio stations (MF) operated remotely by Stockholm Radio:

Tingstäde (1674 kHz)
Grimeton (1710 kHz)
Bjuröklubb (1779 kHz)
Gislövshammar (1797 kHz)
Härnösand (2733 kHz)
3288 Stockholm (SDJ). 1674, 1710, 1779, 1797, 2733 0333, 0733, 1133, 1533, 1933, Local navigational warnings, weather and ice (ice
kHz, J3E, Ch. 01, 03, 21, 22, 2333. at 1133).
23, 24, 25, 26, 27, 28, 62, 64,
65, 66, 78, 81, 82, 84, F3E.
1674, 1710, 1779, 1797, 2733 0633, 1433. Weather in Swedish (May - Nov.).
kHz, J3E, Ch. 01, 03, 21, 22,
23, 24, 25, 26, 27, 28, 62, 64,
65, 66, 78, 81, 82, 84, F3E.
518 kHz, F1B. 0110, 0510, 0910, 1310, 1710, NAVTEX [H] (Bjuröklubb).
2110.
518 kHz, F1B. 0130, 0530, 0930, 1330, 1730, NAVTEX [J] (Gislövshammar).
2130.
518 kHz, F1B. 0030, 0430, 0830, 1230, 1630, NAVTEX [D] (Grimeton).
2030.
FINLAND
NOTE: Ships are requested to report ice and other navigational hazards by radio; ice conditions may be reported in ice code, English, Finnish, German or Swedish,
and should be sent to the nearest coast radio station. Finnish icebreakers Urho (OHMS), Sisu (OHMW)*, Voima (OHLW), Apu (OHMP), Fennica (OJAD), Nordica
(OJAE), Otso (OIRT), Kontio (OIRV) and Botnica (OJAK) maintain 24 hour watch on radiotelephone 2338 kHz and on VHF Ch. 16. Icebreakers will reply on the call
frequency, whereafter the communication will continue on a working frequency.
* Also 12 hour watch on radiotelegraphy 500 kHz.
3314 Turku (OFK). 1638, 1677, 1719, 2810 kHz, 0233, 0633, 1033, 1433, 1833, NAVAREA I, local navigational warnings and
J3E, Ch. 01, 02, 03, 04, 05, 2233. weather.
23, 24, 25, 26, 27, 28, 68, 84,
86, F3E.
1638, 1677, 1719, 2810 kHz, 0803, 1133, 1933. Ice.

J3E, Ch. 01, 02, 03, 04, 05,
23, 24, 25, 26, 27, 28, 68, 84,
86, F3E.
3315 Radio Finland (Yleisradio). 558, 963 kHz, A3E. 0655, 1045, 1710, 2055. Local navigational warnings and weather in
Finnish.
93.1-100.3 MHz, F3E. 0615, 1045, 1710, 2010. Local navigational warnings and weather in
Finnish.
558, 963 kHz, A3E, 1045. Ice in Finnish.

93.1-100.3 MHz, F3E.
6120 kHz, A3E. 1045 (Mon. - Sat.). Local navigational warnings, weather and ice in
Finnish.
RUSSIA - BALTIC COAST
NAVIP:
LOCAL WARNINGS:
PRIP.
3325 Kaliningrad (UIW). 4228, 8454, 12877.5, 16927, 1000, 1620. NAVIP and NAVAREA warnings.
19724.5, 22603.5 kHz, F1B.
LITHUANIA
3332 Klaipeda (LYL). 3215 kHz, J3E. 0333, 0733, 1133, 1533, 1933, Local navigational warnings.
2333.
3215 kHz, J3E. 0758, 1555. Weather.
3730 kHz, A1A, F1B. 0505, 1300. Weather.
Ch. 04, F3E. 0503, 0703. Weather.
3 - 40
(1) (2) (3) (4) (5)

LATVIA
3333 Riga (YLQ). 4357 kHz, J3E. 0033, 0433, 0833, 1233, 1633, Local navigational warnings.
2033.
Ch. 09, F3E. 0615, 1515. Weather.
Ch. 71, F3E. 0503, 1303. Local navigational warnings and weather.
ESTONIA
3334 Tallinn (ESA). 3310 kHz, J3E. 0233, 0633, 1033, 1433, 1833, Local navigational warnings.
2233.
1650 kHz, J3E. 0433, 1333. Weather.
3310 kHz, J3E, Ch. 69, F3E. Every hour +03m, +33m. Weather.
518 kHz, F1B. 0320, 0720, 1120, 1520, 1920, NAVTEX [U] (Broadcast relayed by Stockholm
2320. (SDJ)).
POLAND
3336 Witowo (SPS). 2720 kHz, J3E, Ch. 24, 25, 0133, 0533, 0933, 1333, 1733, Local navigational warnings.
26, F3E. 2133.
2720 kHz, J3E, Ch. 24, 25, 1035, 1335. Ice.

26, F3E.
2720 kHz, J3E, Ch. 24, 25, 0133, 0733, 1333, 1933. Weather.
26, F3E.
3337 Slupsk. Ch. 12, 71, F3E. 0615, 1145, 1745. Local navigational warnings.
Ch. 12, 71, F3E. 0605, 1135, 1735, 2205. Weather.
3338 Zatoka Gdansk VTS. Ch. 71, F3E. 0605, 1205, 1805, 2305. Local navigational warnings and weather in
Polish.
Ch. 71, F3E. 0620, 1220, 1820, 2320. Local navigational warnings and weather in
English.
DENMARK
NOTE: Ice information is available 24 hours on request from the Danish Ice Service at the Naval Operation Command (SOK) Århus by telephone: (45) 89 43 32
04/53, fax: (45) 89 43 32 44.
Coast radio stations (MF) operated remotely by Lyngby Radio:

Skamlebæk (1704 kHz)
Blåvand (1734 kHz)
Skagen (1758 kHz)
Rønne (2586 kHz)
3359 Lyngby (OXZ). 1704, 1734, 1758, 2586 kHz, 0133, 0533, 0933, 1333, 1733, Local navigational warnings.
A3E, Ch. 01, 02, 03, 04, 05, 2133.
07, 23, 28, 64, 65, 66, 83, F3E.
1704, 1734, 1758, 2586 kHz, 1305. Ice.

A3E.
1704, 1734, 1758, 2586 kHz, On request. Weather and ice.

A3E, Ch. 01, 02, 03, 04, 05,
07, 23, 28, 64, 65, 66, 83, F3E.
Ch. 02, 04, 05, 07, 28, 64, 65, 0220, 0520, 0820, 1120, 1420, SHIPPOS information.
F3E. 1720, 2020, 2320.
3362 Danish Radio (Kalundborg). 243, 1062 kHz, A3E. 0445, 0745, 1045, 1645, 2145. Weather in Danish.
243 kHz, A3E. 1150. Ice.
243, 1062 kHz, A3E. 1530 (Mon. - Fri.). Ice.
3 - 41
(1) (2) (3) (4) (5)

GERMANY - NORTH SEA
NOTE: Vessels encountering dangers to navigation in waters of the Federal Republic of Germany should notify Seewarndienst Emden (Sea Warning Service Emden)
through the nearest Coast Radio Station. The Sea Warning service is available 24 hours and can be contacted by telephone: (49) 4927 187783, fax: (49) 4927
187788, telex: (41) 232154 SWD EM D, e-mail: seewarndienst.wsa-emd@t-online.de.
Reports of oil pollution should be sent to the Zentral Meldekopf Cuxhaven (ZMK) (Central Headquarters Cuxhaven) through the nearest Coast Radio Station. Radio
telegrams must carry the legend ZMK Cuxhaven and commence with the codeword Oelunfall (Oil Accident). ZMK Cuxhaven bears the cost of the message and is
available 24 hours by telephone: (49) 4721 567485, fax: (49) 4721 567404, e-mail: mlz@wsd-nord.de, frequency: through Cuxhaven Elbe Traffic Ch. 16, 71.
3370 Bremen (MRCC). Ch. 16, F3E. Every hour +00m, +30m. Local navigational warnings.
3371 Offenbach/Pinneberg (DDH) 147.3, 11039, 14467.3 kHz, 0950, 1715. Local navigational warnings.
(DDK). F1B.
4583, 7646, 10100.8 kHz, F1B. 0515, 1715. Local navigational warnings.
147.3, 11039, 14467.3 kHz, 0500, 0505, 0520, 0530, 0535, Weather in German.
F1B. 0600, 0605, 0620, 0630, 0700,
0725, 0730, 0820, 0840, 0900,
0905, 0920, 0930, 1010, 1025,
1030, 1035, 1100, 1120, 1200,
1205, 1220, 1230, 1300, 1325,
1330, 1420, 1440, 1500, 1505,
1520, 1530, 1545, 1610, 1625,
1630, 1635, 1735, 1800, 1805,
1820, 1830, 1900, 1925, 1930,
2020, 2040, 2100, 2105, 2120,
2130.
4583, 7646, 10100.8 kHz, F1B. 0000, 0005, 0020, 0030, 0035, Weather.
0200, 0300, 0305, 0320, 0330,
0355, 0415, 0440, 0535, 0550,
0600, 0605, 0610, 0735, 0815,
0835, 0850, 0900, 0905, 0930,
0955, 1015, 1035, 1115, 1135,
1150, 1200, 1205, 1210, 1335,
1435, 1450, 1500, 1505, 1530,
1550, 1610, 1635, 1735, 1800,
1805, 1810, 1935, 2015, 2035,
2050, 2100, 2105, 2130, 2155,
2215, 2235, 2315.
3855, 7880, 13882.5 kHz, 0430-2200. Weather FAX*; 120/576.

F3C.
3855, 7880, 13882.5 kHz, 0930, 1007, 1520, 1540, 2100, Ice FAX*; 120/576.
F3C. 2115.
3373 Deutschlandfunk (DLF). 1269, 6190 kHz, A3E. 0105, 0640, 1105. Weather and ice in German.
2105 (Summer only).
NETHERLANDS
3375 Netherlands Coast Guard (PBK). 3673 kHz, J3E, Ch. 23, 83, 0333, 0733, 1133, 1533, 1933, Local navigational warnings and weather (ice at
F3E. 2333. 1133).
3673 kHz, J3E. 0940, 2140. Weather.
Ch. 23, 83, F3E. 0705, 1205, 1805, 2205. Weather.
518 kHz, F1B. 0230, 0630, 1030, 1430, 1830, NAVTEX [P].
2230.
BELGIUM
3378 Antwerpen (OSA). Ch. 24, F3E. Every hour +03m, +48m. Local navigational warnings and weather.
3380 Oostende (OSU). 2761 kHz, J3E, Ch. 27, F3E. 0233, 0633, 1033, 1433, 1833, Local navigational warnings.
2233.
2761 kHz, J3E, Ch. 27, F3E. 0103, 0503, 0903, 1303, 1703, Ice.
2103.
2761 kHz, J3E, Ch. 27, F3E. 0820, 1720. Weather.
518 kHz, F1B. 0310, 0710, 1110, 1510, 1910, NAVTEX [T].
2310.
518 kHz, F1B. 0200, 0600, 1000, 1400, 1800, NAVTEX [M] (Dover Strait broadcast for U.K.).
2200.
3 - 42
(1) (2) (3) (4) (5)

UNITED KINGDOM
NAVAREA I:
Includes waters north to 71°N, south to 48°27′N and west to 35°W, and the Baltic Sea. Original reports to Hydrographer of the Navy, Radio Navigational Warnings,
Ministry of Defence, Taunton.
LOCAL WARNINGS:
WZ:
Original reports to Hydrographer of the Navy, Radio Navigational Warnings, Ministry of Defence.
3390 Aberdeen (Coastguard MRCC). 2226 kHz, J3E, Ch. 23, 84, 0320, 0720, 1120, 1520, 1920, Local navigational warnings and weather.
86, F3E. 2320.
2226 kHz, J3E. 0820, 2020 (Oct. 1 - Mar. 31). Weather.
3391 Forth (Coastguard MRSC). Ch. 23, 86, F3E. 0205, 0605, 1005, 1405, 1805, Local navigational warnings and weather.
2205.
3392 Cullercoats. 490 kHz, F1B. 0720, 1920. NAVTEX [U] (Inshore local broadcast).
518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [G].
2100.
3394 Humber (Coastguard MRSC). 2226 kHz, J3E, Ch. 23, 84, 0340, 0740, 1140, 1540, 1940, Local navigational warnings and weather.
F3E. 2340.
3395 Northwood (GYA). 2618.5, 4610, 8040, 11086.5 Continuous. Weather FAX* (North Atlantic); 120/576.
kHz, F3C.
6834, 18261 kHz, F3C; Continuous; Weather FAX* (Persian Gulf); 120/576.
3289.5, 14436 kHz, F3C. Alternate.
*NOTE: Broadcast schedule at 0100, 1300 for North Altantic and 0230, 1430 for Persian Gulf.
3396 Yarmouth (Coastguard MRCC). 1869 kHz, J3E, Ch. 23, 84, 0040, 0440, 0840, 1240, 1640, Local navigational warnings and weather.
86, F3E. 2040.
3397 Thames (Coastguard MRSC). Ch. 23, 73, 84, 86, F3E. 0010, 0410, 0810, 1210, 1610, Local navigational warnings and weather.
2010.
3397.1 Dover (Coastguard MRCC). Ch. 23, 86, F3E. 0105, 0505, 0905, 1305, 1705, Local navigational warnings and weather.
2105.
3397.2 Solent (Coastguard MRSC). 1641 kHz, J3E, Ch. 23, 86, 0040, 0440, 0840, 1240, 1640, Local navigational warnings and weather.
F3E. 2040.
3398 Niton. 490 kHz, F1B. 0310, 0710, 1110, 1510, 1910, NAVTEX [T] in French.
2310.
490 kHz, F1B. 0520, 1720. NAVTEX [I] (Inshore local broadcast).
518 kHz, F1B. 0040, 0440, 0840, 1240, 1640, NAVTEX [E].
2040.
518 kHz, F1B. 0140, 0540, 0940, 1340, 1740, NAVTEX [K].
2140.
3400 Portland (Coastguard MRSC). Ch. 10, F3E. 0220, 0620, 1020, 1420, 1820, Local navigational warnings and weather.
2220.
Ch. 73, 86, F3E. 0220, 0620, 1020, 1420, 1820, Weather.
2220.
3400.2 Brixham (Coastguard MRSC). Ch. 10, 23, 73, 84, 86, F3E. 0050, 0450, 0850, 1250, 1650, Local navigational warnings and weather.
2050.
3400.3 Falmouth (Coastguard MRCC). 2226 kHz, J3E, Ch. 23, 86, 0140, 0540, 0940, 1340, 1740, Local navigational warnings and weather.
F3E. 2140.
3400.4 Swansea (Coastguard MRCC). Ch. 10, 23, 73, 84, 86, F3E. 0005, 0405, 0805, 1205, 1605, Local navigational warnings and weather.
2005.
3400.5 Milford Haven (Coastguard 1767 kHz, J3E, Ch. 84, 86, 0335, 0735, 1135, 1535, 1935, Local navigational warnings and weather.
MRSC). F3E. 2335.
3400.6 Holyhead (Coastguard MRSC). 1880 kHz, J3E, Ch. 73, 84, 0235, 0635, 1035, 1435, 1835, Local navigational warnings and weather.
F3E. 2235.
3400.7 Liverpool (Coastguard MRSC). Ch. 10, 23, 73, 86, F3E. 0210, 0610, 1010, 1410, 1810, Local navigational warnings and weather.
2210.
3 - 43
(1) (2) (3) (4) (5)

3401 Portpatrick. 490 kHz, F1B. 0820, 2020. NAVTEX [C] (Inshore local broadcast).
518 kHz, F1B. 0220, 0620, 1020, 1420, 1820, NAVTEX [O].
2220.
3402 Clyde (Coastguard MRCC). 1883 kHz, J3E, Ch. 10, 23, 0020, 0420, 0820, 1220, 1620, Local navigational warnings and weather.
73, 84, 86, F3E. 2020.
3404 Stornoway (Coastguard MRSC). 1743 kHz, J3E, Ch. 10, 67, 0110, 0510, 0910, 1310, 1710, Local navigational warnings and weather.
73, 84, F3E. 2110.
3404.1 Shetland (Coastguard MRSC). 1770 kHz, J3E, Ch. 10, 23, 0105, 0505, 0905, 1305, 1705, Local navigational warnings and weather.
73, 84, F3E. 2105.
3404.5 Belfast (Coastguard MRSC). Ch. 73, 84, 86, F3E. 0305, 0705, 1105, 1505, 1905, Local navigational warnings and weather.
2305.
IRELAND
3405 Dublin (Coastguard MRCC). Ch. 02, 04, 23, 83, F3E. 0033, 0433, 0833, 1233, 1633, Local navigational warnings.
2033 (1 hr. earlier when daylight
savings in effect).
Ch. 02, 04, 23, 83, F3E. 0033, 0103, 0403, 0633, 0703, Weather.
1003, 1233, 1303, 1603, 1833,
1903, 2203 (1 hr. earlier when
daylight savings in effect).
3406 Malin Head (EJM) (Coastguard 1677 kHz, J3E, Ch. 02, 23, 0033, 0433, 0833, 1233, 1633, Local navigational warnings.
MRSC). 24, 26, 83, F3E. 2033 (1 hr. earlier when daylight
savings in effect).
Ch. 02, 23, 24, 26, 83, F3E. 0033, 0103, 0403, 0633, 0703, Weather.
1003, 1233, 1303, 1603, 1833,
518 kHz, F1B. 0240, 0640, 1040, 1440, 1840, NAVTEX [Q].
2240.
3408 Valentia (EJK) (Coastguard 1752 kHz, J3E, Ch. 04, 23, 0233, 0633, 1033, 1433, 1833, Local navigational warnings.
MRSC). 24, 26, 28, F3E. 2233 (1 hr. earlier when daylight
savings in effect).
1752 kHz, J3E. 0303, 0833, 0903, 1503, 2033, Weather.

savings in effect).
Ch. 04, 23, 24, 26, 28, F3E. 0033, 0103, 0403, 0633, 0703, Weather.
1003, 1233, 1303, 1603, 1833,
518 kHz, F1B. 0340, 0740, 1140, 1540, 1940, NAVTEX [W].
2340.
CHANNEL ISLANDS
3410 Jersey. Ch. 25, 82, F3E. 0433, 0833, 1633, 2033. Local navigational warnings.
Ch. 25, 82, F3E. 0307, 0645, 0745, 0845, 0907, Weather.
1245, 1507, 1845, 2107, 2245 (1
hr. earlier when daylight savings in
effect for 0645, 0745, 0845).
3 - 44
(1) (2) (3) (4) (5)

FRANCE - CHANNEL AND ATLANTIC
NAVAREA II:
Includes the waters of the eastern Atlantic between 6°S and 48°27′N, west to 20°W up to 7°N and west to 35°W to the northern boundary. Original reports to the
nearest coast radio station and vessels in the vicinity. Message should be preceded by the safety signal “SECURITE” and addressed to “PREFET MARITIME”. It
should include the originating vessel's name and owner.
NOTE: Maritime Safety Information (MSI) broadcasts are announced by CROSS Stations on 2182 kHz or VHF Ch. 16 prior to broadcast on scheduled frequency or
channel number.
3421 Gris-Nez (CROSS) (MRCC). 1650 kHz, J3E. 0733, 1933. Local navigational warnings.
1650, 2677 kHz, J3E. 0733, 1933. Weather in French.
Ch. 79, F3E. Every hour +03m, +04m, +10m. Weather in French.
Ch. 79, F3E. 0603, 0610, 0620, 1433, 1445, Weather in French.
1503, 1803, 1810, 1820.
3421.5 Jobourg (CROSS) (MRCC). 1650 kHz, J3E. 0815, 2015. Local navigational warnings.
Ch. 80, F3E. Every hour +03m, +20m, +50m. Weather.
1433, 1445, 1503, 1515, 1533,
1803, 1815, 1833, 1845, 1903.
3423 Corsen (CROSS) (MRCC). 1650, 2677 kHz, J3E. 0635, 1835. Local navigational warnings.
1650, 2677 kHz, J3E. Every hour +03m., 0715, 1915. Weather in French.
0603, 0615, 0633, 0645, 0703,
1003*, 1015*, 1033*, 1045*,
1103*, 1433, 1445, 1503, 1515,
1533, 1803, 1815, 1833, 1845,
1903.
Ch. 79, F3E. Every hour +03m. Weather in French.
490 kHz, F1B. 0040, 0440, 0840, 1240, 1640, NAVTEX [E] in French.
2040.
518 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [A].
2000.
*NOTE: May 1 - Sep. 30.
3423.5 Etel (CROSS) (MRCC). 2677 kHz, J3E. Every hour +33m, 0803, 1403, Weather in French.
1803.
Ch. 79, F3E. Every hour +03m, 0603, 0615, Weather in French.
0633, 0645, 0703, 1433, 1445,
1503, 1515, 1533, 1803, 1815,
1833, 1845, 1903.
0633, 0645, 0703, 0715, 1433,
1445, 1503, 1515, 1533, 1545,
1803, 1815, 1833, 1845, 1903,
1915.
SPAIN - NORTH COAST
3430 La Guardia. Ch. 21, F3E. 0840, 2010. Local navigational warnings.
Ch. 21, F3E. 0840, 1240, 2010. Weather in Spanish.
3430.1 Vigo. Ch. 10, F3E. On receipt. Local navigational warnings.
Ch. 10, F3E. 0015, 0415, 0815, 1215, 1815, Weather.

2015.
Ch. 65, F3E. 0840, 2010. Local navigational warnings.
3 - 45
(1) (2) (3) (4) (5)

3430.2 Bilbao. Ch. 10, F3E. On receipt. Local navigational warnings.
Ch. 10, F3E. Every even hour +33m. Weather.
3430.3 Pasajes. Ch. 27, F3E. 0840, 2010. Local navigational warnings.
3430.4 Santander. Ch. 24, F3E. 0840, 2010. Local navigational warnings.
Ch. 74, F3E. On receipt. Local navigational warnings.
Ch. 74, F3E. 0245, 0445, 0645, 0845, 1045, Weather .

1445, 1845, 2245.
3430.5 Navia. Ch. 60, F3E. 0840, 2010. Local navigational warnings.
3430.6 Cabo Ortegal. Ch. 02, F3E. 0840, 2010. Local navigational warnings.
3430.8 Cabo Penas. 1677 kHz, J3E. 0703, 1903. Local navigational warnings.
1677 kHz, J3E. 0703, 1303, 1903. Weather in Spanish.
3430.9 Gijon. Ch. 10, F3E. On receipt. Local navigational warnings.
3433 Finisterre. 1764 kHz, J3E. 0703, 1903. Local navigational warnings.
Ch. 11, F3E. 0233, 0633, 1033, 1433, 1833, Weather.

2233.
3434 Coruna. 1698 kHz, J3E. 0703, 1903. Local navigational warnings.
Ch. 12, 13, 14, F3E. 0005, 0405, 0805, 1205, 1605, Weather.
2005.
518 kHz, F1B. 0030, 0430, 0830, 1230, 1630, NAVTEX [D].
2030.
3 - 46
(1) (2) (3) (4) (5)

3436 Machichaco. 1707 kHz, J3E. 0703, 1903. Local navigational warnings.
PORTUGAL
NOTE: Original reports to the nearest coast radio station. Message should be preceded by the safety signal “SECURITE” and be in English or International Code
(CDPUBNV102) giving the following information: description of navigational danger, position and date/time of observation.
3441 Leixoes. Ch. 11, F3E. 0705, 1905. Local navigational warnings and weather.
3444 Monsanto (CTV). 2657 kHz, J3E, Ch. 11, F3E. 0905, 2105. Local navigational warnings and weather.
490 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [G] in Portuguese.
2100.
518 kHz, F1B. 0250, 0650, 1050, 1450, 1850, NAVTEX [R].
2250.
3445 Faro. Ch. 11, G3E. 0805, 2005. Local navigational warnings and weather.
3456 Porto Santo, Madeira (CTQ). 2657 kHz, J3E. 0735, 1935. Local navigational warnings.
2657 kHz, J3E. 0935, 2135. Weather.
Ch. 11, F3E. 0900, 2100. Weather.
ACORES
3456.2 Ponta Delgada. Ch. 11, F3E. 0930, 2130. Local navigational warnings and weather.
3456.3 Horta (CTH). 2657 kHz, J3E. 0935, 2135. Local navigational warnings and weather.
Ch. 11, F3E. 1000, 1100, 2000, 2200. Local navigational warnings and weather.
490 kHz, F1B. 0120, 0520, 0920, 1320, 1720, NAVTEX [J] in Portuguese.
2120.
518 kHz, F1B. 0050, 0450, 0850, 1250, 1650, NAVTEX [F].
2050.
SPAIN - SOUTH AND MEDITERRANEAN
NAVAREA III:
Includes the waters of the Mediterranean and the Black Sea. Original reports to NAVAREA III Coordinator, Instituto de la Marina.
3458 Cadiz. Ch. 26, F3E. 0833, 2003. Local navigational warnings.
Ch. 74, F3E. 0315, 0715, 1115, 1515, 1915, Weather.

2315.
3459 Alicante. Ch. 85, F3E. 0910, 2110. Local navigational warnings.
3459.3 Chipiona. 1656 kHz, J3E. 0733, 1933. Local navigational warnings.
3 - 47
(1) (2) (3) (4) (5)

3459.35 Cabo de la Nao. Ch. 01, F3E. 0910, 2110. Local navigational warnings.
518 kHz, F1B. 0350, 0750, 1150, 1550, 1950, NAVTEX [X].
2350.
3459.37 Valencia. Ch. 10, F3E. On receipt. Local navigational warnings.
3459.4 Castellon. Ch. 25, F3E. 0910, 2110. Local navigational warnings.
Ch. 74, F3E. 0900, 1400, 1900. Weather.
3459.5 Tarragona. Ch. 23, F3E. 0910, 2110. Local navigational warnings.
Ch. 74, F3E. Summer: 0433, 0833, 1433, 1933; Weather.

Winter: 0533, 0933, 1533, 2033.
3459.55 Barcelona. Ch. 10, F3E. On receipt. Local navigational warnings.
Ch. 10, F3E. Summer: 0500, 0900, 1400, 1900; Weather.

Winter: 0600, 1000, 1500, 2000.
3459.6 Malaga. Ch. 26, F3E. 0833, 2003. Local navigational warnings.
3459.65 Almeria. Ch. 74, F3E. On receipt. Local navigational warnings.
Ch. 74, 76, F3E. Every odd hour +15m. Weather.
3459.7 Cabo de Gata. 1767 kHz, J3E. 0750, 1950. Local navigational warnings.
3460 Tarifa. 1704 kHz, J3E. 0733, 1933. Local navigational warnings.
518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [G].
2100.
3 - 48
(1) (2) (3) (4) (5)

3462 Cartagena. Ch. 04, F3E. 0910, 2110. Local navigational warnings.
Ch. 10, F3E. 0115, 0515, 0915, 1315, 1715, Weather.

2115.
3462.5 Bagur. Ch. 23, F3E. 0910, 2110. Local navigational warnings.
ISLAS BALEARES
3464 Palma. 1755 kHz, J3E. 0750, 1950. Local navigational warnings.
Ch. 10, F3E. Summer: 0635, 0935, 1435, 1935; Weather in Spanish.
Winter: 0735, 1035, 1535, 2035.
3464.5 Menorca. Ch. 85, F3E. 0910, 2110. Local navigational warnings.
3465 Ibiza. Ch. 03, F3E. 0910, 2110. Local navigational warnings.
FRANCE - MEDITERRANEAN
NOTE: Maritime Safety Information (MSI) broadcasts are announced by CROSS Stations on 2182 kHz or VHF Ch. 16 prior to broadcast on scheduled frequency or
channel number.
3471 La Garde (CROSS) (MRCC). 1696, 2677 kHz, J3E. 0733, 1503. Local navigational warnings.
1696, 2677 kHz, J3E. 0550, 1333, 1750. Weather in French.
1696, 2677 kHz, J3E. 0003, 0403, 0803, 1203, 1603, Weather in French.
2003.
1133, 1145, 1803, 1815.
0650, 0703, 1203, 1215, 1220,
1233, 1833, 1845, 1850, 1903.
490 kHz, F1B. 0300, 0700, 1100, 1500, 1900, NAVTEX [S] in French.
2300.
518 kHz, F1B. 0340, 0740, 1140, 1540, 1940, NAVTEX [W].
2340.
3473 Corse (Sous-CROSS) (MRSC). Ch. 79, F3E. Every hour +10m, 0633, 0645, Weather in French.
0703, 0715, 0733, 0745, 1133,
1145, 1203, 1215, 1233, 1245,
1833, 1845, 1903, 1915, 1933,
1945.
3 - 49
(1) (2) (3) (4) (5)

MONACO
3474 Monaco (3AC) (3AF). 4363 kHz, J3E, Ch. 20, 22, 0703. Local navigational warnings in French (in English
F3E. on request).
8806, 13152, 17323, 22768 0930. Weather.

kHz, J3E.
4363 kHz, J3E, Ch. 20, 22, 0803, 1303, 1815. Weather.
F3E.
8728, 8806 kHz, J3E. 0715, 1830. Weather.
Ch. 20, 22, F3E. Every hour +03m (during hours of Weather.
service).
Ch. 23, 24, 25, F3E. Continuous. Weather.
NOTE: Hours of service: 0600-2100 (Winter), 0500-2000 (Summer).
ITALY
3475 Roma (IAR). 521.5 kHz, A1A. 0948, 1318, 1748, 2118. Local navigational warnings and weather.
521.5, 4292, 8530, 13011, 0830, 2030. Weather.

17160.8 kHz, A1A.
521.5, 4292 kHz, A1A. 0050, 0650, 1250, 1850. Weather.
Ch. 25, F3E. 0533, 0933, 1333, 1833, 2333. Local navigational warnings.
Ch. 25, F3E. 0135, 0735, 1335, 1935. Weather.
Ch. 68, F3E. Continuous. Weather.
518 kHz, F1B. 0250, 0650, 1050, 1450, 1850, NAVTEX [R].
2250.
3476 Cagliari (IDC). 444 kHz, A1A. 0918, 1248, 1648, 2048. Local navigational warnings and weather.
2680 kHz, J3E, Ch. 04, 62, 0303, 0803, 1203, 1603, 2003. Local navigational warnings.
82, F3E.
2680 kHz, J3E, Ch. 04, 62, 0135, 0735, 1335, 1935. Weather.
82, F3E.
2680 kHz, J3E. 0303, 0803, 1203, 1603, 2003. Weather.
518 kHz, F1B. 0310, 0710, 1110, 1510, 1910, NAVTEX [T].
2310.
3477.2 Augusta (IQA). 2628 kHz, J3E, Ch. 85, 86, 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
F3E.
2628 kHz, J3E, Ch. 85, 86, 0135, 0735, 1335, 1935. Weather.
F3E.
2628 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
518 kHz, F1B. 0330, 0730, 1130, 1530, 1930, NAVTEX [V].
2330.
3477.3 Porto Cervo. Ch. 26, F3E. 0303, 0803, 1203, 1603, 2003. Local navigational warnings.
Ch. 26, F3E. 0135, 0735, 1335, 1935. Weather.
3 - 50
(1) (2) (3) (4) (5)

3477.4 Porto Torres (IZN). 2719 kHz, J3E, Ch. 26, 28, 0303, 0803, 1203, 1603, 2003. Local navigational warnings.
85, F3E.
2719 kHz, J3E, Ch. 26, 28, 0135, 0735, 1335, 1935. Weather.
85, F3E.
2719 kHz, J3E. 0303, 0803, 1203, 1603, 2003. Weather.
3477.5 Ancona (IPA). 511.5 kHz, A1A. 0948, 1248, 1718, 2118. Local navigational warnings and weather.
F3E.
511.5 kHz, A1A. 0148, 0748, 1348, 1948. Weather.
2656 kHz, J3E, Ch. 02, 25, 0135, 0735, 1335, 1935. Weather.
F3E.
2656 kHz, J3E. 0433, 0933, 1333, 1733, 2133. Weather.
3477.6 Ravenna. Ch. 27, F3E. 0433, 0933, 1333, 1733, 2133. Local navigational warnings.
Ch. 27, F3E. 0135, 0735, 1335, 1935. Weather.
3478 Genova (ICB). 447 kHz, A1A. 0848, 1348, 1748, 2148. Local navigational warnings and weather.
27, F3E.
2722 kHz, J3E, Ch. 07, 25, 0135, 0735, 1335, 1935. Weather.
27, F3E.
2722 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3480 Livorno (IPL). 2591 kHz, J3E, Ch. 26, 61, 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
F3E.
2591 kHz, J3E, Ch. 26, 61, 0135, 0735, 1335, 1935. Weather.
F3E.
2591 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3482 Civitavecchia (IPD). 1888 kHz, J3E, Ch. 01, 64, 0533, 0933, 1333, 1833, 2333. Local navigational warnings.
F3E.
1888 kHz, J3E, Ch. 01, 64, 0135, 0735, 1335, 1935. Weather.
F3E.
1888 kHz, J3E. 0533, 0933, 1333, 1833, 2333. Weather.
3484 Napoli (IQH). 2632 kHz, J3E, Ch. 01, 25, 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
27, F3E.
2632 kHz, J3E, Ch. 01, 25, 0135, 0735, 1335, 1935. Weather.
27, F3E.
2632 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3 - 51
(1) (2) (3) (4) (5)

3486 Messina (IDF). 2789 kHz, J3E, Ch. 88, F3E. 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
2789 kHz, J3E, Ch. 88, F3E. 0135, 0735, 1335, 1935. Weather.
2789 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3487 Palermo (IPP). 1852 kHz, J3E, Ch. 27, 61, 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
81, 84, F3E.
1852 kHz, J3E, Ch. 27, 61, 0135, 0735, 1335, 1935. Weather.
81, 84, F3E.
1852 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3489 Mazara del Vallo (IQQ). 2600 kHz, J3E, Ch. 25, 26, 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
82, F3E.
2600 kHz, J3E, Ch. 25, 26, 0135, 0735, 1335, 1935. Weather.
82, F3E.
2600 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3490 Lampedusa (IQN). 1876 kHz, J3E, Ch. 25, 87, 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
88, F3E.
1876 kHz, J3E, Ch. 25, 87, 0135, 0735, 1335, 1935. Weather.
88, F3E.
1876 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3493 Crotone (IPC). 2663 kHz, J3E, Ch. 26, 62, 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
84, 88, F3E.
2663 kHz, J3E, Ch. 26, 62, 0135, 0735, 1335, 1935. Weather.
84, 88, F3E.
2663 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3495 Bari (IPB). 514.5 kHz, A1A. 0848, 1218, 1648, 2048. Local navigational warnings and weather.
27, F3E.
514.5 kHz, A1A. 0125, 0725, 1325, 1925. Weather.
2579 kHz, J3E, Ch. 01, 05, 0135, 0735, 1335, 1935. Weather.
27, F3E.
2579 kHz, J3E. 0333, 0833, 1233, 1633, 2033. Weather.
3496 San Benedetto del Tronto (IQP). 1855 kHz, J3E, Ch. 65, 87, 0433, 0933, 1333, 1733, 2133. Local navigational warnings.
F3E.
1855 kHz, J3E, Ch. 65, 87, 0135, 0735, 1335, 1935. Weather.
F3E.
1855 kHz, J3E. 0433, 0933, 1333, 1733, 2133. Weather.
3 - 52
(1) (2) (3) (4) (5)

3498 Trieste (IQX). 512.5 kHz, A1A. 0848, 1218, 1648, 2048. Local navigational warnings and weather.
F3E.
2624 kHz, J3E, Ch. 01, 26, 0135, 0735, 1335, 1935. Weather.
83, F3E.
2624 kHz, J3E. 0433, 0933, 1333, 1733, 2133. Weather.
Ch. 83, F3E. 0333, 0833, 1233, 1633, 2033. Local navigational warnings.
518 kHz, F1B. 0320, 0720, 1120, 1520, 1920, NAVTEX [U].
2320.
MALTA
3498.05 Malta. 2625 kHz, J3E, R3E, Ch. 04, 1003, 1603, 2103. NAVAREA III, local navigational warnings.
F3E.
2625 kHz, J3E, R3E, Ch. 04, 0603, 1003, 1603, 2103. Weather.
F3E.
518 kHz, F1B. 0220, 0620, 1020, 1420, 1820, NAVTEX [O].
2220.
ALBANIA
3498.1 Durres (ZAD). 460 kHz, A1A. 0818, 1218, 1618. Local navigational warnings.
CROATIA
3499 Split (9AS). Ch. 07, 21, 81, F3E. 0545, 1245, 1945. Local navigational warnings and weather.
518 kHz, F1B. 0240, 0640, 1040, 1440, 1840, NAVTEX [Q].
2240.
3499.05 Dubrovnik (9AD). 2615 kHz, J3E, Ch. 04, 07, 0625, 1320, 2120. Local navigational warnings and weather.
F3E.
3499.1 Rijeka (9AR). 2771 kHz, J3E, Ch. 24, F3E. 0535, 1435, 1935. Local navigational warnings and weather.
SERBIA AND MONTENEGRO
3499.5 Bar (YUW). 1720.4 kHz, J3E, Ch. 20, 24, 0850, 1420, 2050. Local navigational warnings and weather.
F3E.
GREECE
3500 Kerkira (SVK). 2830 kHz, J3E. 0033, 0633, 1033, 1633. Local navigational warnings.
2830 kHz, J3E. 0703, 0903, 1533, 2133. Weather.
518 kHz, F1B. 0140, 0540, 0940, 1340, 1740, NAVTEX [K].
2140.
3502 Iraklion (SVH). 2799 kHz, J3E. 0633, 1133, 1733, 2333. Local navigational warnings.
2799 kHz, J3E. 0703, 0903, 1533, 2133. Weather.
518 kHz, F1B. 0110, 0510, 0910, 1310, 1710, NAVTEX [H].
2110.
3503 Rodhos (SVR). 2624 kHz, J3E. 0633, 1133, 1733, 2333. Local navigational warnings.
2624 kHz, J3E. 0703, 0903, 1533, 2133. Weather.
3 - 53
(1) (2) (3) (4) (5)

3504 Athens (SVN) (SVJ4). 2590 kHz, J3E. 0703, 0933, 1503, 2103. Weather.
8743 kHz, J3E. 1215, 2015. Weather in Greek.
8743 kHz, J3E. 0633, 1233, 1633, 2233. Local navigational warnings.
4481, 8105 kHz, F3C. 0845-0945. Weather FAX; 120/576.
3506 Hellenic Radio-Television. 729 kHz, A3E. 0450. Local navigational warnings.
729, 927, 1008, 1044, 1404, 1330. Local navigational warnings.

1485, 1494, 1512, 1602 kHz,
A3E, 88.0-97.9, 101.8 MHz,
F3E.
729 kHz, A3E. 0430. Weather.
729, 927, 1008, 1044, 1404, 1330. Weather in Greek.

1485, 1494, 1512, 1602 kHz,
A3E.
3507 Hellas. Ch. 01, 02, 04, 23, 25, 27, 60, 0500, 1100, 1730, 2330. Local navigational warnings.
63, 82, 83, 85, F3E.
Ch. 01, 02, 04, 23, 25, 27, 60, 0600, 1000, 1600, 2200. Weather.
63, 82, 83, 85, F3E.
Ch. 86, F3E. Continuous. Local navigational warnings and weather.
3508 Limnos (SVL). 2730 kHz, J3E. 0033, 0633, 1033, 1633. Local navigational warnings.
2730 kHz, J3E. 0703, 0903, 1533, 2133. Weather.
518 kHz, F1B. 0150, 0550, 0950, 1350, 1750, NAVTEX [L].
2150.
CYPRUS
3509 Cyprus (5BA). 2700 kHz, H3E, J3E, R3E. 0733, 1533. Local navigational warnings.
518 kHz, F1B. 0200, 0600, 1000, 1400, 1800, NAVTEX [M].
2200.
BULGARIA
3510 Varna (LZW). 3740 kHz, J3E. 0703, 1903. Local navigational warnings and weather.
4212.5 kHz, F1B. 0630, 1830. Weather.
12635.5 kHz, F1B. 0630, 1230, 1830. Weather.
518 kHz, F1B. 0130, 0530, 0930, 1330, 1730, NAVTEX [J].
2130.
ROMANIA
3512 Constanta (YQI). 2748 kHz, J3E. 0733, 1033, 1333, 1633, 1933. Local navigational warnings and weather.
Ch.12, G3E. 0703, 1003, 1303, 1603, 1903, Local navigational warnings and weather.
2203.
490 kHz, F1B. 0150, 0550, 0950, 1350, 1750, NAVTEX [L] in Romanian.
2150.
NOTE: Navigational warnings are announced on MF 2182 kHz and 2187.5 kHz DSC, and on VHF Ch. 16 and Ch. 70 DSC prior to broadcast on scheduled frequency
or channel number.
3 - 54
(1) (2) (3) (4) (5)

UKRAINE
3514 Odessa (UDE) (UFB). 510.5 kHz, A1A. 1718, 2318. Local navigational warnings.
510.5, 6341.5 kHz, A1A. 0518, 1118. Local navigational warnings.
3310 kHz, R3E. 0233, 0633, 1033, 1433, 1833, Local navigational warnings.
2233.
510.5, 6341.5 kHz, A1A. 0520, 1500, 2105. Weather and ice (in Russian at 0520, 1500).
6353, 8520, 12947, 17155 0100. Weather (Apr. 15 - Sep. 30 on 17155 kHz).
kHz, A1A.
518 kHz, F1B. 0230, 0630, 1030, 1430, 1830, NAVTEX [C].
2230.
3516 Sevastopol (URL-8). 476 kHz, A1A. 0018, 0618, 1218, 1818. Local navigational warnings.
2695 kHz, H3E. 0033, 0733, 1133, 1533, 1933, Local navigational warnings.
2233.
3517 Mariupol (USU) (UTW). 473 kHz, A1A. 0218, 0818, 1418, 2018. Local navigational warnings.
2233.
473, 4265 kHz, A1A. 0500, 1700. Weather and ice in Russian (ice at 1700).
2805 kHz, H3E. 0330, 0930. Weather and ice in Russian (ice at 0930).
6326.5, 8422.5, 12615, 16829 1440. Local navigational warnings in Russian and
kHz, F1B. Ukrainian (selected warnings repeated in
English).
3517.5 Kerch. 518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [B].
2100.
3518 Kiev. 12828.7 kHz, F3C. 1857 (on 1, 6, 11, 16, 21, 26 of Ice FAX; 120/576.
each month).
GEORGIA
3519 Batumi (UFA). 484 kHz, A1A. 0118, 0718, 1318, 1918. Local navigational warnings.
2133.
484 kHz, A1A. 0507, 1307, 2030. Weather in Russian.
RUSSIA - BLACK SEA
NAVIP:
LOCAL WARNINGS:
PRIP.
3520 Novorossiysk. 518 kHz, F1B. 0300, 0700, 1100, 1500, 1900, NAVTEX [A].
2300.
RUSSIA - CASPIAN SEA
LOCAL WARNINGS:
PRIP.
3522 Astrakhan. 518 kHz, F1B. 0340, 0740, 1140, 1540, 1940, NAVTEX [W].
2340.
3 - 55
(1) (2) (3) (4) (5)

TURKEY
3528.1 Antalya. Ch. 67, F3E. 0700, 1000, 1300, 1600, 1900. Weather.
Ch. 67, F3E. 0730, 0900, 0930, 1130, 1330, Weather in Turkish.
1530, 1730, 1930.
490 kHz, F1B. 0030, 0430, 0830, 1230, 1630, NAVTEX [D] in Turkish. On trial.
2030.
518 kHz, F1B. 0050, 0450, 0850, 1250, 1650, NAVTEX [F].
2050.
3529 Izmir. 490 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [C] in Turkish. On trial.
2020.
518 kHz, F1B. 0120, 0520, 0920, 1320, 1720, NAVTEX [I].
2120.
3531 Samsun. Ch. 67, F3E. 0700, 1000, 1300, 1600, 1900. Weather.
1530, 1730, 1930.
490 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [A]. On trial.
2000.
518 kHz, F1B. 0040, 0440, 0840, 1240, 1640, NAVTEX [E].
2040.
3533 Istanbul (TAH). 4405, 8812, 13128 kHz, J3E. 1000, 1800. Weather.
4560, 8431, 12654 kHz, F1B. 0800, 2000. Weather.
Ch. 67, F3E. 0700, 1000, 1300, 1600, 1900. Weather.
1530, 1730, 1930.
490 kHz, F1B. 0010, 0410, 0810, 1210, 1610, NAVTEX [B] in Turkish. On trial.
2010.
4209.5 kHz, F1B. 0200, 0600, 1000, 1400, 1800, NAVTEX [M] in Turkish. On trial.
2200.
518 kHz, F1B. 0030, 0430, 0830, 1230, 1630, NAVTEX [D].
2030.
ISRAEL
3534 Haifa (4XO). 2649 kHz, J3E, Ch. 26, F3E. On request. Local navigational warnings and weather.
518 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [P].
2020.
EGYPT - MEDITERRANEAN
3537 Alexandria. 518, kHz, F1B. 0210, 0610, 1010, 1410, 1810, NAVTEX [N].
2210.
LIBYA
3538 Tripoli (5AT). 2182 kHz, H3E, J3E. 0903, 1903. Local navigational warnings.
2197 kHz, H3E, J3E. 0833, 1733. Weather.
TUNISIA
3540 La Goulette Port (3VW). 2182 kHz, J3E. 0003, 0403, 0603, 1003, 1303, Local navigational warnings in French.
1803, 1903, 2103.
2182 kHz, J3E. On receipt, every hour +03m, Weather in French.

+33m.
3 - 56
(1) (2) (3) (4) (5)

3542 Tunis (3VT). 1820, 2670 kHz, A3E. 0803, 1203, 2003. Local navigational warnings in French.
1820, 2670 kHz, A3E. 0805, 1705. Weather in French.
ALGERIA
3550 Annaba (7TB). 2775 kHz, A3E. 0833, 2033. Local navigational warnings in French.
1745 kHz, A3E. 0920, 1033, 1720, 1833. Weather in French.
3552 Alger (7TA). 416 kHz, A1A, A2A, 1792 0918, 2118. Local navigational warnings in French.
kHz, A3E.
1792 kHz, A3E. 0903, 1703. Weather in French.
416 kHz, A1A, A2A, 2691 0918, 2118. Weather in French.

kHz, A3E.
3554 Oran (7TO). 1735 kHz, A3E. 0833, 2033. Local navigational warnings and weather in
French.
1735, 2586, 2719 kHz, A3E. 0920, 1033, 1720, 1735. Weather in French.
MOROCCO
NOTE: Vessels observing dangers to navigation are requested to transmit observations to the nearest coast radio station and other vessels in the vicinity. Message
should be preceded by the safety signal “SECURITE” and addressed to Commander, Royal Navy, Casablanca, giving observing vessel's name and owner.
3560 Tanger (CNW). 1911 kHz, H3E, J3E. 1018, 1748. Local navigational warnings in French.
1911 kHz, H3E, J3E. Every hour +03m, 0915, 1635. Weather in French.
3570 Agadir (CND). 1911 kHz, H3E, J3E. 1048, 1628. Local navigational warnings in French.
3572 Casablanca (CNP). 2586 kHz, H3E, J3E. 0918, 2028. Local navigational warnings in French.
3574 Safi (CND-3). 1743 kHz, A3E. 0928, 1648. Local navigational warnings in French.
ISLAS CANARIAS
3579 Arrecife. 1644 kHz, J3E. 0803, 1903. Local navigational warnings.
3579.5 Fuerteventura. Ch. 22, F3E. 0833, 2033. Local navigational warnings.
3580 Las Palmas. 1689 kHz, J3E. 0803, 1903. Local navigational warnings.
1689 kHz, J3E. 0803, 1233, 1903. Weather in Spanish
518 kHz, F1B. 0120, 0520, 0920, 1320, 1720, NAVTEX [I].
2120.
3 - 57
(1) (2) (3) (4) (5)

3581 Tenerife. Ch. 27, F3E. 0833, 2033. Local navigational warnings.
Ch. 74, F3E. 0215, 0615, 1015, 1415, 1815, Local navigational warnings.
2215.
Ch. 74, F3E. 0015, 0415, 0815, 1215, 1615, Weather.

2015.
3581.3 Gomera. Ch. 24, F3E. 0833, 2033. Local navigational warnings.
3581.6 Hierro. Ch. 23, F3E. 0833, 2033. Local navigational warnings.
3581.9 La Palma. Ch. 20, F3E. 0833, 2033. Local navigational warnings.
MAURITANIA
3583 Nouadhibou (5TA). 1881 kHz, A3E. 0833. Weather in French.
SENEGAL
3584 Dakar (6VA) (6VU). 1813 kHz, A3E. 0848, 1248, 1948. Local navigational warnings in French.
13667.5, 19750 kHz, F3C. Continuous. Weather FAX; 120/576.
GUINEA
3590 Conakry (3XC). 1813 kHz, A3E. 0818, 1218, 1718. Local navigational warnings in French.
COTE D'IVOIRE (IVORY COAST)
3600 Abidjan (TUA). 2586 kHz, H3E. 0848, 1248, 1948. Local navigational warnings in French.
GHANA
3605 Tema (9GX). 1674 kHz, H3E, J3E. 0905, 2105. Local navigational warnings and weather.
8791 kHz, J3E. 0900, 2100. Local navigational warnings and weather.
BENIN
3610 Cotonou (TYA). 1813 kHz, H3E. 0818, 1218, 1718. Local navigational warnings in French.
1813 kHz, H3E. 1003, 1603. Weather in French.
NIGERIA
3615 Lagos (5OW). 2755 kHz, J3E. 0833, 1303. Local navigational warnings.
3617 Port Harcourt (5OZ). 2630 kHz, J3E. 0820, 1220. Local navigational warnings.
CAMEROON
3620 Douala (TJC). 500, 519 kHz, A1A. Every hour +48m (0500-2000). Local navigational warnings.
8449 kHz, A1A. 0800, 0900, 1300. Weather.
13069.5 kHz, A1A. 0700, 1100, 1500. Weather.
3 - 58
(1) (2) (3) (4) (5)

NAMIBIA
3627 Luderitz (V5L). Ch. 23, G3E. 0905, 1605. NAVAREA VII and local navigational warnings.
Ch. 23, G3E. 0935, 1235, 1635. Weather.
3628 Walvis Bay (V5W). 1764, 4357 kHz, J3E, Ch. 26, 0905, 1605. NAVAREA VII and local navigational warnings.
27, G3E.
1764, 4357 kHz, J3E, Ch. 26, 0935, 1235, 1635. Weather.
27, G3E.
518 kHz, F1B. 0010, 0410, 0810, 1210, 1610, NAVTEX [B].
2010.
ANGOLA
3629 Luanda (D3E). 4143.6, 8291.1 kHz, J3E, Ch. 0233, 0633, 1033, 1433, 1833, Local navigational warnings in Portuguese.
24, F3E. 2233.
CONGO (BRAZZAVILLE)
3630 Pointe Noire (TNA). 2705 kHz, R3E. 0610, 0810, 1010, 1410, 1610. Local navigational warnings in French.
SOUTH AFRICA
NAVAREA VII:
Includes waters of the South Atlantic and Indian Oceans, bound on the west by a line running from the African Coast at 6°S to 20°W, thence south to Antarctica, and
on the east by a line running from the east African coast at 10°30′S to 55°E, thence south to 30°S, east to 80°E and south to Antarctica. Original reports to
NAVAREA VII Coordinator, Hydrographer, S.A. Navy, Maritime Headquarters, Cape Town.
3641 Port Elizabeth (ZSQ). 4375, 8740, 13146 kHz, J3E, 1015, 1333, 1815. NAVAREA VII, local navigational warnings and
Ch. 23, 24, 25, 27, 28, 83, weather (weather only at 1333).
G3E.
518 kHz, F1B. 0120, 0520, 0920, 1320, 1720, NAVTEX [I].
2120.
NOTE: HF and VHF voice broadcasts remotely controlled from Cape Town.
3643 Durban (ZSD). 4375, 8740, 13146 kHz, J3E, 1015, 1333, 1815. NAVAREA VII, local navigational warnings and
Ch. 01, 03, 25, 26, 27, 28, weather (weather only at 1333).
G3E.
518 kHz, F1B. 0220, 0620, 1020, 1420, 1820, NAVTEX [O].
2220.
NOTE: HF and VHF voice broadcasts remotely controlled from Cape Town.
3644 Cape Town (ZSC). 4375, 8740, 13146 kHz, J3E, 1015, 1333, 1815. NAVAREA VII, local navigational warnings and
Ch. 01, 03, 04, 23, 25, 26, 27, weather (weather only at 1333).
84, 85, 86, G3E.
518 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [C].
2020.
3645 East London (ZSA). Ch. 26, G3E. 1015, 1333, 1815. NAVAREA VII, local navigational warnings and
weather (weather only at 1333).
NOTE: VHF voice broadcasts remotely controlled from Cape Town.
3645.1 Cape Naval (NAVCOMCEN 4014 kHz, F3C. 0430, 0500, 2230. Weather FAX*; 120/576.
Cape) (ZSJ).
7508, 13538 kHz, F3C. 0430, 0500, 0630, 0730, 1030, Weather FAX*; 120/576.
1100, 1530, 2230.
18238 kHz, F3C. 0630, 0730, 1030, 1100, 1530. Weather FAX*; 120/576.
7508, 13538, 18238 kHz, F3C. 0800. Ice FAX; 120/576.
4014 kHz, J2B. 1700. Weather.
7508, 13538 kHz, J2B. 0915, 1700. Weather.
18238 kHz, J2B. 0915. Weather.
3 - 59
(1) (2) (3) (4) (5)

CHILE
NAVAREA XV:
Includes the waters of the eastern South Pacific from 18°21′S to Antarctica, bound on the west by 120°W and on the east by 67°16′W. Original reports to Director del
Servicio Hidrografico y Oceanografico de la Armada de Chile, Valparaiso.
3645.4 Puerto Montt (CBP). 2738, 4146 kHz, J3E. 1130, 2325. Weather in Spanish.
Ch. 10, G3E. 1150, 2345. Weather in Spanish.
518 kHz, F1B. 0430, 1230, 2030. NAVTEX [D].
518 kHz, F1B. 0030, 0830, 1630. NAVTEX [K] in Spanish.
3645.5 Valparaiso Playa Ancha (CBV). 4214.5, 4217.5, 8420.5, 8424, 1430. NAVAREA XV warnings and local navigational
12583.5, 12587, 16811, warnings.
16814.5, 22380.5 kHz, F1B.
4214.5, 4217.5, 8420.5, 8424, 1210, 1610, 1845. Weather.

12583.5, 12587, 16811,
16814.5 kHz, F1B.
2738, 4357 kHz, J3E. 1235, 2335. Weather in Spanish.
4228, 8677, 17146.4 kHz, 1115, 1630, 1915, 2315. Weather FAX; 120/576.
F3C.
518 kHz, F1B. 0410, 1210, 2010. NAVTEX [B].
518 kHz, F1B. 0010, 0810, 1610. NAVTEX [I] in Spanish.
3645.6 Talcahuano (CBT). 2738 kHz, J3E. 0220, 1420. Local navigational warnings.
2738 kHz, J3E. 0045, 1245. Weather in Spanish.
518 kHz, F1B. 0420, 1220, 2020. NAVTEX [C].
518 kHz, F1B. 0020, 0820, 1620. NAVTEX [J] in Spanish.
3645.7 Magallanes (CBM). 2738, 4146 kHz, J3E. 0035, 1235. Weather in Spanish.
518 kHz, F1B. 0440, 1240, 2040. NAVTEX [E].
518 kHz, F1B. 0040, 0840, 1640. NAVTEX [L] in Spanish.
3645.75 Antofagasta (CBA). 2738 kHz, J3E. 0045, 1250. Weather in Spanish.
518 kHz, F1B. 0400, 1200, 2000. NAVTEX [A].
518 kHz, F1B. 0000, 0800, 1600. NAVTEX [H] in Spanish.
3645.76 Isla de Pascua (Easter Island) 2738 kHz, J3E. 0225, 1425. Weather in Spanish.
(CBY).
Ch 14, G3E. 0215, 1415. Weather in Spanish.
518 kHz, F1B. 0450, 1250, 2050. NAVTEX [F].
518 kHz, F1B. 0050, 0850, 1650. NAVTEX [G] in Spanish.
3645.77 Centro Meteorologico 5302.5, 11662.5, 15470.5 0030, 0330, 0930, 1230, 1530, Weather.
Presidente Eduardo Frei, King kHz, F1B. 2130, 2230.
George Island (South Shetland
Islands) (CAN6D).
5302.5, 11662.5, 15470.5 0930, 1530, 2130. Weather FAX; 120/576.

kHz, F3C.
3 - 60
(1) (2) (3) (4) (5)

3645.8 Base Prat, Greenwich Island 2738 kHz, J3E. 0150, 1350. Weather.
(South Shetland Islands) (CBZ).
6439 kHz, F1B. 1400, 2200. Weather.
6439 kHz, F1B. On request. Ice.
Ch. 14, G3E. 0155, 1355. Weather.
ECUADOR
NOTE: Original reports to Guayaquil (HCG) Naval Radio, preceded by the word “HIDRO”, or mail to Institute of the Navy, Guayaquil.
3646 Guayaquil Naval (HCG). 8474 kHz, A2A. 0000, 1200, 1700. Local navigational warnings.
PERU
NAVAREA XVI:
Includes the waters of the eastern South Pacific between 3°24′S and 18°21′S, west to 120°W. Original reports to Direccion de Hidrografia y Navegacion de la Marina,
Callao.
3646.1 Callao (OBC). 485, 12307 kHz, A1A. 0200, 1600, 2100. Local navigational warnings and weather in
Spanish, NAVAREA XVI.
518 kHz, F1B. 0320, 0720, 1120, 1520, 1920, NAVTEX [U].
2320.
3646.2 Paita (OBY-2). 485, 6436 kHz, A1A. 0230, 1630, 2130. Local navigational warnings.
518 kHz, F1B. 0300, 0700, 1100, 1500, 1900, NAVTEX [S].
2300.
3646.3 Mollendo (OBF-4). 156.8 MHz, F3E. 0245, 1645, 2145. Local navigational warnings and weather.
518 kHz, F1B. 0340, 0740, 1140, 1540, 1940, NAVTEX [W].
2340.
UNITED STATES - PACIFIC
NAVAREA XII:
Original reports to NAVAREA XII Coordinator, National Geospatial-Intelligence Agency, Attn: PVM (Mail stop D-44).
HYDROPAC:
LOCAL WARNINGS:
3646.5 Long Beach, CA (NMC) (NMQ-9) 2670 kHz, J3E. 0503, 1303, 2103. Local Notice to Mariners and weather.
U.S. Coast Guard.
3646.6 Cambria, CA (NMQ) 518 kHz, F1B. 0045, 0445, 0845, 1245, 1645, NAVTEX [Q].
U.S. Coast Guard. 2045.
3 - 61
(1) (2) (3) (4) (5)

3657 Point Reyes, CA (NMC) 2670 kHz, J3E. 0203, 1403. Local Notice to Mariners and weather.
(NMC-17) U.S. Coast Guard.
8416.5, 16806.5 kHz, F1B. 0005, 1800. Maritime Safety Information (MSI) (HF NBDP)
(NAVAREA XII, HYDROPAC and weather).
4426, 8764, 13089 kHz, J3E. 0430, 1030. Maritime Safety Information (MSI).
8764, 13089, 17314 kHz, J3E. 1630, 2230. Maritime Safety Information (MSI).
Ch. 22A, F3E. 1630, 1900, 2330. Local Notice to Mariners and weather.
4346 kHz, F3C. 0245, 0800, 1100, 1430. Weather FAX*; 120/576.
8682, 12590.5, 17151.2 kHz, 0245, 0800, 1100, 1430, 1930, Weather FAX*; 120/576.
F3C. 2300.
518 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [C].
2000.
3661 Humboldt Bay, CA (NMC-11) 2670 kHz, J3E. 0303, 1503. Local Notice to Mariners and weather.
U.S. Coast Guard.
3664 North Bend, OR (NOE) 2670 kHz, J3E, Ch. 22A, F3E. 0603, 1803. Local Notice to Mariners and weather.
U.S. Coast Guard.
3665 Astoria, OR (NMW) 2670 kHz, J3E, Ch. 22A, F3E. 0533, 1733. Local Notice to Mariners and weather.
U.S. Coast Guard.
518 kHz, F1B. 0130, 0530, 0930, 1330, 1730, NAVTEX [W].
2130.
3666 Portland, OR (NMW-44) Ch. 22A, F3E. 1745. Local Notice to Mariners and weather.
U.S. Coast Guard.
3667 Port Angeles, WA (NOW) 2670 kHz, J3E, Ch. 22A, F3E. 0615, 1815. Local Notice to Mariners and weather.
U.S. Coast Guard.
3668 Seattle, WA (NMW-43) Ch. 22A, F3E. 0630, 1830. Local Notice to Mariners and weather.
U.S. Coast Guard.
CANADA - PACIFIC
3671 Victoria, B.C. (VAK). 162.475 MHz, Ch. 21B, F3E. Continuous (interrupted during live Local navigational warnings and weather.
broadcasts at 0510, 1510, 2110).
3672 Comox, B.C. (VAC). 162.475, 162.55 MHz, Ch. Continuous (interrupted during live Local navigational warnings and weather.
21B, F3E. broadcasts at 0420, 1520, 2120).
3675 Tofino, B.C. (VAE). 2054 kHz, J3E, 162.4, 0050, 0650, 1250, 1850. Local navigational warnings and weather.
162.475, 162.55 MHz, Ch.
21B, F3E.
162.4, 162.475, 162.55 MHz, Continuous (interrupted during live Local navigational warnings and weather.
Ch. 21B, F3E. broadcasts).
518 kHZ, F1B. 0110, 0510, 0910, 1310, 1710, NAVTEX [H].
2110.
3677 Prince Rupert, B.C. (VAJ). 2054 kHz, J3E. 0105, 0705, 1305, 1905. Local navigational warnings and weather.
162.4, 162.475, 162.55 MHz, Continuous. Local navigational warnings and weather.
Ch. 21B, F3E.
518 kHz, F1B. 0030, 0430, 0830, 1230, 1630, NAVTEX [D].
2030.
3 - 62
(1) (2) (3) (4) (5)

UNITED STATES - ALASKA
NAVAREA XII:
HYDROPAC:
LOCAL WARNINGS:
3692.5 Juneau, AK (NMJ) Ch. 22A, F3E. 0103, 0203, 0303, 0403, 1403, Local Notice to Mariners and weather.
U.S. Coast Guard. 1433, 1503, 1533.
3695 Kodiak, AK (NOJ) 6501 kHz, J3E. 0203, 1645. Maritime Safety Information (MSI).
U.S. Coast Guard.
Ch. 22A, F3E. 0133, 0233, 0533, 1433, 1603, Local Notice to Mariners and weather.
1803.
2054 kHz, F3C. 0950, 1600. Weather and ice FAX*; 120/576.
4298, 8459 kHz, F3C. 0400, 0950, 1600, 2150. Weather and ice FAX*; 120/576.
12412.5 kHz, F3C. 0400, 2150. Weather and ice FAX*; 120/576.
518 kHz, F1B. 0300, 0700, 1100, 1500, 1900 NAVTEX [J].
2300.
518 kHz, F1B. 0340, 0740, 1140, 1540, 1940 NAVTEX [X]. (Weather products previously
2340. broadcast from Adak.)
3696.5 Valdez, AK Ch. 22A, F3E. 0115, 0133, 0715, 0733, 1315, Local Notice to Mariners and weather.
U.S. Coast Guard. 1333, 2115, 2133.
UNITED STATES - HAWAII
NAVAREA XII:
HYDROPAC:
LOCAL WARNINGS:
3703 Honolulu, HI (NMO) (NMO-2) 8416.5, 12579, 22376 kHz, 0130, 2030. Maritime Safety Information (MSI) (HF NBDP)
U.S. Coast Guard. F1B. (NAVAREA XII, HYDROPAC and weather).
8416.5, 12579 kHz, F1B. 0730, 1330. Maritime Safety Information (MSI) (HF NBDP)
(NAVAREA XII, HYDROPAC and weather).
6501, 8764 kHz, J3E. 0600, 1200. Maritime Safety Information (MSI).
8764, 13089 kHz, J3E. 0005, 1800. Maritime Safety Information (MSI).
2670 kHz, J3E. 0545, 1145, 1745, 2345. Local Notice to Mariners.
Ch. 22A, F3E. 0500, 0900, 1700, 2100. Local Notice to Mariners and weather.
518 kHz, F1B. 0040, 0440, 0840, 1240, 1640, NAVTEX [O].
2040.
3703.5 Honolulu, HI (KVM70). 9982.5 kHz, F3C. 1132. Weather FAX*; 120/576.
11090 kHz, F3C. 0533, 1132, 1733. Weather FAX*; 120/576.
16135 kHz, F3C. 0533, 1733, 2320. Weather FAX*; 120/576.
23331.5 kHz, F3C. 2320. Weather FAX*; 120/576.
MAURITIUS
3710 Mauritius (3BM). 518 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [C].
2020.
3 - 63
(1) (2) (3) (4) (5)

3710.5 Port Louis (3BB). 4402 kHz, J3E. 0115, 0730, 1315, 1930. Weather.
4402 kHz, J3E. 0433, 1233, 1603. Local navigational warnings.
Ch. 14, F3E. 0205, 1405. Weather.
REUNION
3711 Reunion (COSRU) (MRCC). 2600 kHz, J3E. 0430, 1000, 1230. Weather in French.
2600 kHz, J3E. 0430, 1000. Local navigational warnings in French.
0600, 0615, 0630, 0900, 0915, French.
0930, 0945, 1100, 1115, 1130,
1145, 1400, 1415, 1430, 1445,
1600, 1615, 1630, 1645.
EGYPT - RED SEA
3713.2 Quseir. 518 kHz, F1B. 0330, 0730, 1130, 1530, 1930, NAVTEX [V].
2330.
3713.4 Ismailia (Serapeum) (SUZ). 4209.5 kHz, F1B. 0750, 1150. NAVTEX [X].
518 kHz, F1B. 0350, 0750, 1150, 1550, 1950, NAVTEX [X] (Red Sea and Gulf of Suez
2350. broadcasts).
SAUDI ARABIA - RED SEA
3713.6 Jiddah. 1726 kHz, J3E. 0333, 0733, 1133, 1533, 1933, Local navigational warnings.
2333.
1726 kHz, J3E. 0503, 0533, 1133, 1703, 1733, Weather.

2333.
518 kHz, F1B. 0110, 0510, 0910, 1310, 1710, NAVTEX [H].
2110.
OMAN
3713.8 Muscat. 518 kHz, F1B. 0200, 0600, 1000, 1400, 1800, NAVTEX [M].
2200.
QATAR
3713.9 Doha. 2768 kHz, J3E, Ch. 24, F3E. 0433, 0833, 1233, 1633. Local navigational warnings and weather.
2768 kHz, J3E, Ch. 24, F3E. 0503, 1003, 1603. Weather.
SAUDI ARABIA - PERSIAN GULF
LOCAL WARNINGS:
MENAS:
Original reports to Middle Eastern Navigational Service, P.O. Box 66, Manama, Bahrain.
3714.2 Dammam. 518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [G].
2100.
IRAN
3715 Bandar Khomeyni (EQN). Ch. 18, F3E. 0530, 1230. Local navigational warnings and weather.
3715.1 Bushehr (EQM). Ch. 18, F3E. 0530, 1230. Local navigational warnings and weather.
518 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [A].
2000.
3 - 64
(1) (2) (3) (4) (5)

3715.2 Bandar Abbas (EQI). 460, 8469 kHz, A1A. 0530, 1230. Local navigational warnings and weather.
4210 kHz, F1B. 0730, 1430. Maritime Safety Information (MSI) (HF NBDP).
8416.5 kHz, F1B. 0330, 0530, 1230. Maritime Safety Information (MSI) (HF NBDP).
12579 kHz, F1B. 0830, 1030. Maritime Safety Information (MSI) (HF NBDP).
518 kHz, F1B. 0050, 0450, 0850, 1250, 1650, NAVTEX [F].
2050.
3715.3 Chah Bahar (EQJ). Ch. 18, F3E. 0530, 1230. Local navigational warnings and weather.
BAHRAIN
3716 Bahrain. 518 kHz, F1B. 0010, 0410, 0810, 1210, 1610, NAVTEX [B].
2010.
PAKISTAN
NAVAREA IX:
Includes the waters of the Red Sea, Persian Gulf, Suez Canal, Gulf of Oman and the Arabian Sea from Somalia to the India-Pakistan frontier. Original reports to Area
Coordinator, NAVAREA IX, Hydrographer of the Pakistan Navy, Naval Headquarters, Karachi. The Middle East Navigational Aid Service is Subarea Coordinator.
LOCAL WARNINGS:
For the coast of Pakistan. Original reports to the Hydrographer of the Pakistan Navy.
3720 Karachi (ASK). 500 kHz, A2A. 0030, 0430, 1230, 2030. Local navigational warnings and weather.
466, 484, 13024 kHz, A1A, 0830. Local navigational warnings and weather
500 kHz, A2A. (weather only on 484 kHz).
466, 484, 8694 kHz, A1A, 500 1630. Local navigational warnings and weather
kHz, A2A. (weather only on 484 kHz).
500 kHz, A2A. Every hour +00m. Weather.
518 kHz, F1B. 0230, 0630, 1030, 1430, 1830, NAVTEX [P].
2230.
3721 Karachi Naval (AQP). 2457.5, 6390, 8490, 13011, 0400, 1200. NAVAREA IX.
17093.6 kHz, A1A.
2457.5, 6390, 8490, 13011, 0200, 0600, 1000, 1400, 1800, Navigational warnings and weather.
17093.6 kHz, A1A. 2200.
INDIA
NAVAREA VIII:
Includes the waters of the Indian Ocean from 10°30′S on the African coast to 55°E, thence south to 30°S and east to 95°E. Original reports to NAVAREA VIII
Coordinator, Chief Hydrographer to the Government of India, Dehra Dun.
3722 Bombay Naval (VTG). 2072, 4268, 6467, 8634, 0500, 0900, 1500. NAVAREA VIII.
12808.5, 16938, 22378 kHz,
A1A.
2072, 4268, 6467, 8634, 1215 (Sun.). NAVAREA VIII.

12808.5, 16938, 22378 kHz,
A1A.
4268, 8634, 12808.5, 16938, 0900. Weather.

22378 kHz, A1A.
2072, 4268, 6467, 8634, 1500. Weather.

12808.5 kHz, A1A.
3 - 65
(1) (2) (3) (4) (5)

3722.05 Bombay (VWB). 521, 8630, 12710 kHz, A1A. 0648, 1548. Local navigational warnings.
521, 8630, 12710 kHz, A1A. 0420, 0820, 1220, 1620, 2020, Weather.
2320.
500 kHz, A2A, 8630, 12710 0448, 0848, 1248, 1648, 2048, Weather.
kHz, A1A. 2348.
521 kHz, A1A. 0618, 0848, 1518, 1648. Weather.
500 kHz, A2A, 8630, 12710 Every hour +00m. Weather.

kHz, A1A.
518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [G].
2100.
3722.1 Vishakhapatnam (VWV). 474 kHz, A1A. 0548, 1548. Local navigational warnings.
474, 500 kHz, A1A. 0050, 0550, 0950, 1350, 1850, Weather.
2150.
3722.2 Vishakhapatnam Naval (VTP). 2295, 4238, 6418, 8646, 0500, 0900, 1500. NAVAREA VIII.
12840, 16695 kHz, A1A.
2295, 4238, 6418, 8646, 1215 (Sun.). NAVAREA VIII.

12840, 16695 kHz, A1A.
3723 Kandla (VWK). 440 kHz, A1A. 0648, 1548. Local navigational warnings.
440 kHz, A1A. 0420, 0820, 1220, 1620, 2020, Weather.

2320.
3725 Ratnagiri (VWZ). 420.5 kHz, A1A. 0648, 1548. Local navigational warnings.
420.5 kHz, A1A. 0420, 0820, 1220, 1620, 2020, Weather.

2320.
420.5 kHz, A1A. Every hour +00m. Weather.
3726 Goa (VWG). 417.5 kHz, A1A. 0648, 1548. Local navigational warnings.
417.5 kHz, A1A. 0420, 0820, 1220, 1620, 2020, Weather.

2320.
417.5 kHz, A1A. Every hour +00m. Weather.
3727 Mangalore (VWL). 438 kHz, A1A. 0648, 1548. Local navigational warnings.
438 kHz, A1A. 0420, 0820, 1220, 1620, 2020, Weather.

2320.
3728 Cochin (VWN). 460 kHz, A1A. 0648, 1548. Local navigational warnings.
460 kHz, A1A. 0420, 0820, 1220, 1620, 2020, Weather.

2320.
3728.1 Tuticorin (VWT). 487 kHz, A1A. 0648, 1548. Local navigational warnings.
487 kHz, A1A. 0050, 0550, 0950, 1350, 1850, Weather.

2150.
3 - 66
(1) (2) (3) (4) (5)

3728.2 Madras (VWM). 515 kHz, A1A. 0548, 1548. Local navigational warnings.
515 kHz, A1A. 0050, 0550, 0950, 1350, 1850, Weather.

2150.
500 kHz, A2A, 4301, 8674.4 0050, 1350, 1850, 2150. Weather.
kHz, A1A.
500 kHz, A2A, 8674.4, 0550, 0950. Weather.

12718.5 kHz, A1A.
518 kHz, F1B. 0230, 0630, 1030, 1430, 1830, NAVTEX [P].
2230.
3728.3 Calcutta (VWC). 470, 8526 kHz, A1A. 0548. Local navigational warnings.
470, 4286 kHz, A1A. 1548. Local navigational warnings.
500 kHz, A2A, 8526 kHz, A1A. 0018, 0518, 0848, 1318, 1818, Weather.
2118.
470 kHz, A1A. 0050, 0550, 0950, 1350, 1850, Weather.

2150.
470 kHz, A1A. 0848, 0918, 1418, 1818. Weather.
500 kHz, A2A, 8526 kHz, A1A. Every hour +00m. Weather.
3729 Port Blair (VWP). 442 kHz, A1A. 0548, 1548. Local navigational warnings.
442 kHz, A1A. 0100, 0600, 1000, 1400, 1900, Weather.

2200.
SRI LANKA
3730 Colombo (4PB). 482 kHz, A1A, A2A, 8473 0600, 0900, 1330. Local navigational warnings.
kHz, A1A.
482 kHz, A1A, A2A, 8473 0530, 0600, 1300, 1330. Weather.
kHz, A1A.
BANGLADESH
3731 Chittagong (S3D). 466, 484, 500 kHz, A1A. 0850, 1650. Local navigational warnings.
466, 484, 500, 8694, 13056 0050, 0450, 0850, 1250, 1650, Weather.
kHz, A1A, 2182 kHz, A3E. 2050.
466, 484, 500, 8694, 13056 Every hour +00m. Weather.

kHz, A1A, 2182 kHz, A3E.
BURMA (MYANMAR)
3733 Rangoon (XYR). 460, 500, 8710 kHz, A1A, A2A. 0500, 0900, 1700. Local navigational warnings (weather at 0900,
1700).
460, 500, 8710 kHz, A1A, A2A. 0100, 0500, 1300, 2100. Weather.
460, 500, 8710 kHz, A1A, A2A. Every hour +00m. Weather.
MALAYSIA - PENINSULAR
3734 Pinang. 518 kHz, F1B. 0320, 0720, 1120, 1520, 1920, NAVTEX [U].
2320.
SINGAPORE
3735 Singapore. Ch. 09, F3E. 0100, 0300, 0500, 0700, 0900, Local navigational warnings and weather.
1100, 1300, 1500, 1700, 1900,
2100, 2300.
518 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [C].
2020.
3 - 67
(1) (2) (3) (4) (5)

THAILAND
3736 Bangkok. 6765.1, 8743 kHz, J3E. 0000, 0300, 0600, 0900, 1200, Weather.
1500, 1800, 2100.
518 kHz, F1B. 0050, 0450, 0850, 1250, 1650, NAVTEX [F].
2050.
VIETNAM
3737 Hai Phong (XVG). 8470 kHz, A1A. 0618, 1018, 1418, 2018. Local navigational warnings.
8470 kHz, A1A. 0018, 1218. Weather.
8470 kHz, A1A. Every even hour +18m. Weather.
8294 kHz, J3E. 0100, 1300. Weather in Vietnamese.
8294 kHz, J3E. Every odd hour +00m. Weather in Vietnamese.
3737.5 Da Nang (XVT). 8294 kHz, J3E. 0030, 1230. Weather in Vietnamese.
518 kHz, F1B. 0140, 0540, 0940, 1340, 1740, NAVTEX [K].
2140.
3738 Ho Chi Minh Ville (XVS). 8590 kHz, A1A. 0018, 0418, 0818, 1218. Local navigational warnings.
8590 kHz, A1A. 0048, 1148. Weather.
8590 kHz, A1A. Every odd hour +48m. Weather.
8294 kHz, J3E. 0200, 1200. Weather in Vietnamese.
8294 kHz, J3E. Every even hour +00m. Weather in Vietnamese.
518 kHz, F1B. 0350, 0750, 1150, 1550, 1950, NAVTEX [X].
2350.
HONG KONG (CHINA)
3739 Hong Kong. 518 kHz, F1B. 0150, 0550, 0950, 1350, 1750, NAVTEX [L].
2150.
CHINA
3740 Guangzhou (XSQ). 445, 4288, 6382, 8458, 12973 0248, 0548, 0848, 1148, 1748, Local navigational warnings.
kHz, A1A. 2048, 2348.
445, 6382, 8458, 12973 kHz, 0230, 0730. Local navigational warnings in Chinese.
A1A.
445, 4288, 8458, 12973 kHz, 1400. Local navigational warnings in Chinese.
A1A.
6316, 8435, 16880, 22420 0200, 0630. Local navigational warnings in Chinese.
kHz, F1B.
4212, 8435, 12613, 16880 1330. Local navigational warnings in Chinese

kHz, F1B.
445, 6382, 8458, 12973 kHz, 0700. Local navigational warnings.

A1A.
445, 6382, 8458, 12973 kHz, 0030. Weather.

A1A.
445, 4288, 8458, 12973 kHz, 1230. Weather.

A1A.
445, 6382, 8458, 12973 kHz, 0100. Weather in Chinese.

A1A.
445, 4288, 8458, 12973 kHz, 1300. Weather in Chinese.

A1A.
445, 4288, 6382, 8458, 12973 0248, 0448, 1048, 1448, 1648, Weather.
kHz, A1A. 2048, 2248.
518 kHz, F1B. 0210, 0610, 1010, 1410, 2210. NAVTEX [N].
3 - 68
(1) (2) (3) (4) (5)

3740.1 Sanya (XSI). 518 kHz, F1B. 0200, 0600, 1000, 1400, 2200. NAVTEX [M].
3740.2 Tianjin (XSV). 445, 8600 kHz, A1A. Every even hour +18m. Local navigational warnings.
445, 8600, 12969 kHz, A1A. 0600, 2200. Ice.
445, 4283, 8600, 12969 kHz, 1300. Ice.

A1A.
3740.3 Dalian (XSZ). 462 kHz, A1A, A2A, 6333.5, 0050, 1050. Weather.
8694 kHz, A1A.
518 kHz, F1B. 0250, 0650, 1050, 1450, 2250. NAVTEX [R].
3740.4 Fuzhou (XSL). 518 kHz, F1B. 0220, 0620, 1020, 1420, 2220. NAVTEX [O].
3741 Shanghai (XSG). 522.5, 4290, 6454, 8487, 0200. Local navigational warnings.
12954, 17002.4 kHz, A1A.
522.5, 4290, 6454, 8487, 0300, 0900. Weather.

12954, 17002.4 kHz, A1A.
458 kHz, A1A, A2A, 522.5, 0000, 0300, 0500, 0900, 1200, Weather.
4290, 6454, 8487, 12954 kHz, 1500, 1800, 2100.
A1A.
518 kHz, F1B. 0240, 0640, 1040, 1440, 2240. NAVTEX [Q].
REPUBLIC OF KOREA
3742 Inchon (HLC). 2284 kHz, A3E. 0003. Local navigational warnings.
3742.5 Cheju (HLE). 2299, 2583 kHz, J3E. 0902, 1702. Local navigational warnings.
3743 Mokpo (HLM). 470 kHz, A2A. 0018, 0818. Local navigational warnings and weather.
3744 Kunsan (HLN). 484 kHz, A2A. 0018, 0818. Local navigational warnings and weather.
2507 kHz, A3E. 0403. Local navigational warnings.
3744.5 Pyonsan. 490 kHz, F1B. 0140, 0540, 0940, 1340, 1740, NAVTEX [K] in Korean.
2140.
518 kHz, F1B. 0340, 0740, 1140, 1540, 1940, NAVTEX [W].
2340.
3745 Kangnung (HLK). 476 kHz, A2A. 0018, 0818. Local navigational warnings and weather.
2836 kHz, J3E. 0903. Local navigational warnings.
3746 Busan (HLP). 434 kHz, A2A. 0018, 0818. Local navigational warnings and weather.
3746.5 Chukpyon. 490 kHz, F1B. 0130, 0530, 0930, 1330, 1730, NAVTEX [J] in Korean.
2130.
518 kHz, F1B. 0330, 0730, 1130, 1530, 1930, NAVTEX [V].
2330.
3747 Ullung (HLU). 458 kHz, A2A. 0018, 0818. Local navigational warnings and weather.
3747.5 Yeosu (HLY). 447 kHz, A2A. 0018, 0818. Local navigational warnings and weather.
3 - 69
(1) (2) (3) (4) (5)

RUSSIA - PACIFIC
NAVAREA XIII:
Includes the waters of the Sea of Okhotsk, North Pacific and Bering Sea north of 45°N and east to the International Date Line. Original reports to NAVAREA XIII
Coordinator, Chief, Head Department of Navigation and Oceanography, St. Petersburg.
NAVIP:
LOCAL WARNINGS:
PRIP.
3748 Vladivostok (UFL). 3165, 8595, 12729 kHz, F1B. 1100, 2300. NAVAREA XIII, local navigational warnings, and
weather.
3165, 8595, 12729 kHz, F1B. 1130, 2330. NAVAREA XIII, local navigational warnings, and
weather in Russian.
17175.2 kHz, F1B. 2330. NAVAREA XIII, local navigational warnings, and
weather in Russian.
518 kHz, F1B 0000, 0400, 0800, 1200, 1600, NAVTEX [A].
2000.
3749.5 Petropavlovsk-Kamchatskiy 4323, 6360.5, 12603 kHz, F1B. 2200. NAVIP and NAVAREA XIII warnings in Russian.
(UBE).
518 kHz, F1B. 0020, 0420, 0820, 1220, 1620, NAVTEX [C].
2020.
3750 Kholmsk. 518 kHz, F1B. 0010, 0410, 0810, 1210, 1610, NAVTEX [B].
2010.
3751 Magadan. 2400 kHz, J3E. 0203, 1233. Weather in Russian.
2400 kHz, J3E. 1303. Local navigational warnings in Russian.
518 kHz, F1B. 0030, 0430, 0830, 1230, 1630, NAVTEX [D].
2030.
3751.5 Okhotsk. 518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [G].
2100.
JAPAN
NAVAREA XI:
Includes the waters of the western North Pacific from the Equator to 45°N, east to 180°. Original reports to NAVAREA XI Coordinator, Chief Hydrographer, Japan
Coast Guard, Tokyo.
Maritime Safety Information broadcasts--Storm warnings, weather messages and navigational warnings are announced by Japan Coast Guard (JCG) CRS on VHF
Ch. 16, before being broadcast on the scheduled VHF channel number.
3753 Kushiro (JNX). Ch. 12, F3E. 0103, 0125, 0703, 0725. Local navigational warnings.
424 kHz, F1B. 0108, 0508, 0908, 1308, 1708, NAVTEX [K] in Japanese.
2108.
518 kHz, F1B. 0140, 0540, 0940, 1340, 1740, NAVTEX [K].
2140.
3754 Shiogama (JNN). Ch. 12, F3E. 0125, 0133, 0725, 0733. Local navigational warnings.
3756 Tokyo (JMH). 3622.5, 7305, 13597, 18220 Continuous. Weather FAX*; 120/576.
kHz, F3C.
3622.5, 7305, 13597, 18220 0130 (Wed., Sat.), 1019 (Tue., Fri.). Ice FAX; 120/576.
kHz, F3C.
3757 Yokohama (JGC). Ch. 12, F3E. 0120, 0720. Local navigational warnings.
424 kHz, F1B. 0034, 0434, 0834, 1234, 1634, NAVTEX [I] in Japanese.
2034.
518 kHz, F1B. 0120, 0520, 0920, 1320, 1720, NAVTEX [I].
2120.
3760 Nagoya (JNT). Ch. 12, F3E. 0110, 0710. Local navigational warnings.
3764 Kobe (JGD). Ch. 12, F3E. 0133, 0733. Local navigational warnings.
3 - 70
(1) (2) (3) (4) (5)

3766 Hiroshima (JNE). Ch. 12, F3E. 0115, 0715. Local navigational warnings.
3767 Kagoshima (JNJ). Ch. 12, F3E. 0120, 0720. Local navigational warnings.
3769 Ishigaki (JNG). Ch. 12, F3E. 0133, 0733. Local navigational warnings.
3772 Tanabe (JNH). Ch. 12, F3E. 0103, 0703. Local navigational warnings.
3772.2 Kochi (JNO). Ch. 12, F3E. 0125, 0725. Local navigational warnings.
3772.4 Moji (JNR). Ch. 12, F3E. 0103, 0703. Local navigational warnings.
424 kHz, F1B. 0017, 0417, 0817, 1217, 1617, NAVTEX [H] in Japanese.
2017.
518 kHz, F1B. 0110, 0510, 0910, 1310, 1710, NAVTEX [H].
2110.
3772.5 Sasebo (JNK). Ch. 12, F3E. 0115, 0715. Local navigational warnings.
3772.8 Niigata (JNV). Ch. 12, F3E. 0115, 0715. Local navigational warnings.
3773 Maizuru (JNC). Ch. 12, F3E. 0120, 0720. Local navigational warnings.
3775 Otaru (JNL). Ch. 12, F3E. 0110, 0133, 0710, 0733. Local navigational warnings.
424 kHz, F1B. 0051, 0451, 0851, 1251, 1651, NAVTEX [J] in Japanese.
2051.
518 kHz, F1B. 0130, 0530, 0930, 1330, 1730, NAVTEX [J].
2130.
3777 Naha (JNB). Ch. 12, F3E. 0110, 0710. Local navigational warnings.
424 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [G] in Japanese.
2000.
518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [G].
2100.
TAIWAN
3785 Chi-lung (XSX). 420, 8445, 8506 kHz, A1A, 0430, 1030, 1630, 2230. Weather.
8428* kHz, F1B.
438 kHz, A1A. Every even hour +18m, +48m. Local navigational warnings.
490, 4209.5 kHz, F1B. 0330, 0730, 1130, 1530, 1930, NAVTEX [V] in Chinese.
2330.
490, 4209.5 kHz, F1B. 0350, 0750, 1150, 1550, 1950, NAVTEX [X] in Chinese.
2350.
518, 4209.5 kHz, F1B. 0230, 0630, 1030, 1430, 1830, NAVTEX [P].
2230.
*NOTE: Broadcast announced through DSC 8414.5 kHz.
3787 Hua-lien (XSY). 523, 8546, 8700 kHz, A1A. Every even hour +18m, +48m. Local navigational warnings.
523, 8546, 8700 kHz, A1A. 0530, 1130, 1730, 2330. Weather.
3790 Kao-Hsiung (XSW). 448, 8582, 8632 kHz, A1A. Every odd hour +18m, +48m. Local navigational warnings.
448, 8582, 8632 kHz, A1A. 0500, 1100, 1700, 2300. Weather.
3790.5 Tai-Chung (XSW2). 476, 8511 kHz, A1A. Every even hour +18m, +48m. Local navigational warnings.
3 - 71
(1) (2) (3) (4) (5)

PHILIPPINES
3792 Polo (DZCA). 1170 kHz, A3E. 0030, 0930. Local navigational warnings.
3792.5 Caloocan (DWWW). 630 kHz, A3E. 0900, 2100. Local navigational warnings.
3793 Malolos (DZRP). 918 kHz, A3E. 0000, 1200, 1400, 2000. Local navigational warnings.
3794 Valenzuela (DZFM). 738 kHz, A3E. 0900, 2100. Local navigational warnings.
3795 Manila (DZS-4). 8776.8 kHz, A3E. 0030, 0330, 0630, 0930, 1230. Local navigational warnings and weather.
Ch. 09, 16, 20, F3E. 0030, 0330, 0630, 0930, 1230. Weather.
3795.5 Mandaluyong (DWAD). 1098 kHz, A3E. 0900, 2100. Local navigational warnings.
3796 Lucena (DZLT). 1188 kHz, A3E. 1030, 2230. Local navigational warnings.
3797 Laoag (DZJC). 900 kHz, A3E. 0900, 2100. Local navigational warnings.
3798 Puerto Princesa (DYPR). 783 kHz, A3E. 0900, 2100. Local navigational warnings.
3799 Davao (DXMC). 819 kHz, A3E. 1030, 2230. Local navigational warnings.
3801 Iloilo (DYRP). 1017 kHz, A3E. 1030, 2230. Local navigational warnings.
3802 Daet (DZMD). 1161 kHz, A3E. 1030, 2230. Local navigational warnings.
MALAYSIA - SABAH
3803 Sandakan. 518 kHz, F1B. 0300, 0700, 1100, 1500, 1900, NAVTEX [S].
2300.
MALAYSIA - SARAWAK
3805 Miri. 518 kHz, F1B. 0310, 0710, 1110, 1510, 1910, NAVTEX [T].
2310.
INDONESIA - SUMATERA
3816 Dumai (PKP). 448, 500 kHz, A1A.. Continuous. Local navigational warnings.
6337 kHz, A1A. 0400, 0800, 1200. Local navigational warnings.
8457 kHz, A1A. 0100, 0600, 1000, 1300. Local navigational warnings.
12682.5 kHz, A1A. 0230, 0700. Local navigational warnings.
2182, 3180, 6215.5, 6515.7 Continuous. Local navigational warnings.

kHz, R3E.
8765.4 kHz, R3E. 0100, 0800. Local navigational warnings.
3 - 72
(1) (2) (3) (4) (5)

3817 Belawan (PKB). 474, 500 kHz, A1A. Continuous. Local navigational warnings.
2182, 3180, 6215.5 kHz, R3E. Continuous. Local navigational warnings.
6515.7 kHz, R3E. 0730. Local navigational warnings.
3819 Palembang (PKC). 448, 500 kHz, A1A. 0000. Local navigational warnings.
6491.5 kHz, A1A. 0000, 0500, 0800, 1230. Local navigational warnings.
2182, 2690 kHz, R3E. 0230, 0430, 0700, 1200. Local navigational warnings.
6215.5 kHz, R3E. 0100, 0500, 0900, 1300. Local navigational warnings.
8808.8 kHz, R3E. 0200, 0600, 1000. Local navigational warnings.
INDONESIA - JAVA
3820 Jakarta (PKX). 470, 500 kHz, A1A. Continuous. Local navigational warnings.
8542, 12970.5 kHz, A1A. 0200, 1000, 1800. Local navigational warnings.
16861.7 kHz, A1A. 0400, 1200, 2000. Local navigational warnings.
2182, 2690, 6215.5, 6506.4, Continuous. Local navigational warnings.

6218.6 kHz, R3E.
8753, 13128.7 kHz, R3E. 0000. Local navigational warnings.
22698.3 kHz, R3E. 2000. Local navigational warnings.
8542, 12970.5 kHz, A1A, 1100. Weather.

2690 kHz, R3E.
518 kHz, F1B. 0040, 0440, 0840, 1240, 1640, NAVTEX [E].
2040.
3824 Surabaya (PKD). 430, 500 kHz, A1A. Continuous. Local navigational warnings.
4238 kHz, A1A. 0230. Local navigational warnings.
2182 kHz, R3E. Continuous. Local navigational warnings.
4379.5, 6215.5 kHz, R3E. 0000. Local navigational warnings.
3 - 73
(1) (2) (3) (4) (5)

INDONESIA - SULAWESI
3830 Makasar (PKF). 465, 500 kHz, A1A. Continuous. Local navigational warnings.
8686 kHz, A1A. 0100, 0400, 0630, 1030, 1200. Local navigational warnings.
518 kHz, F1B. 0030, 0430, 0830, 1230, 1630, NAVTEX [D].
2030.
3832 Bitung (PKM). 438, 500 kHz, A1A. Continuous. Local navigational warnings.
2182, 2690 kHz, R3E. 0000, 0400, 0800, 1200, 1400. Local navigational warnings.
2182 kHz, R3E. 1000. Local navigational warnings.
6215.5 kHz, R3E. 0100, 0500, 0900, 2000. Local navigational warnings.
INDONESIA - MOLUCCAS
3836 Amboina (PKE). 470, 500 kHz, A1A. Continuous. Local navigational warnings.
2182, 2690 kHz, R3E. 0000. Local navigational warnings.
6215 kHz, R3E. 0700, 1200. Local navigational warnings.
518 kHz, F1B. 0010, 0410, 0810, 1210, 1610, NAVTEX [B].
2010.
3 - 74
(1) (2) (3) (4) (5)

INDONESIA - IRIAN JAYA
3840 Jayapura (PNK). 465, 500 kHz, A1A. 2200, 0000 (Mon.-Sat.), 0000, Local navigational warnings.
0700 (Sun., hol.).
8694 kHz, A1A. 0000, 0300 (Mon.-Sat.), 0000, Local navigational warnings.
0700 (Sun., hol.).
12682.5 kHz, A1A. 0100, 0530, 0900 (Mon.-Sat.), Local navigational warnings.
0100, 0900 (Sun., hol.).
17074.4 kHz, A1A. 0200, 0700 (Mon.-Sat.), 0200 Local navigational warnings.
(Sun., hol.).
3180 kHz, R3E. 2200, 0000 (Mon.-Sat.), 0200 Local navigational warnings.
(Sun., hol.).
6215.5 kHz, R3E. 2200 (Mon.-Sat.), 2300, 0700 Local navigational warnings.
(Sun., hol.).
6227 kHz, R3E. 2200, 0000, 0700 (Mon.-Sat.), Local navigational warnings.
0000, 0700, 0900 (Sun., hol.).
6510 kHz, R3E. 2200, 0000, 0700. Local navigational warnings.
8800 kHz, R3E. 0100, 0400, 0700, 1000 Local navigational warnings.
(Mon.-Sat.), 0200, 0800 (Sun.,
hol.).
13110 kHz, R3E. 0000, 0300, 0600, 0900. Local navigational warnings.
518 kHz, F1B. 0000, 0400, 0800, 1200, 1600, NAVTEX [A].
2000.
PAPUA NEW GUINEA
3866 Port Moresby (P2M). 484 kHz, A2A, 6351.5, 13042 0100, 0900. Local navigational warnings and weather.
kHz, A1A.
4407, 6515.7 kHz, J3E. 0603, 2203. Local navigational warnings and weather.
484 kHz, A2A, 6351.5, 13042 Every odd hour +00m. Weather.
kHz, A1A.
4407, 6515.7 kHz, J3E. Every even hour +03m. Weather.
AUSTRALIA
NAVAREA X:
Includes the waters surrounding Australia and the Solomon Islands south to Antarctica bound on the west by 80°E and on the east by 170°E south to the Tasman
Sea and 160°E south to Antarctica. Original reports to RCC Australia, through any Australian Coast Radio Station (CRS).
LOCAL WARNINGS:
AUSCOAST:
Original reports to RCC Australia.
3876 Cairns. 8176 kHz, J3E. 1257, 2357. Maritime Safety Information (MSI).
Ch. 81, F3E. 0145, 0345, 0545, 0745, 1945, Weather.

2145, 2345.
3876.5 Gladstone. 8176 kHz, J3E. 1157, 2257. Maritime Safety Information (MSI).
3877 Penta Comstat, Firefly (VZX). 4483, 6522, 8713 kHz, J3E. 0625, 2125. Weather.
6522, 8713 kHz, J3E. 0635, 2135. Local navigational warnings and weather.
8713, 13176 kHz, J3E. 0700, 2200. Weather.
8713, 13176, 17365, 22822 0700, 2200. NAVAREA X warnings.

kHz, J3E.
3882 Sydney. 8176 kHz, J3E. 0057, 1357. Maritime Safety Information (MSI).
3 - 75
(1) (2) (3) (4) (5)

3883 Melbourne. 8176 kHz, J3E. 0257, 2157. Maritime Safety Information (MSI).
Ch. 67, F3E. 0448, 1048, 2248. Local navigational warnings and weather.
3884 Hobart (VMT-232). 2524, 4620 kHz, J3E, Ch. 67, 0345, 0903, 2145. Weather.
68, F3E.
8176 kHz, J3E, Ch. 67, 68, 0557. Maritime Safety Information (MSI).
F3E.
Ch. 82, F3E. 0803, 2233. Weather.
3885 Adelaide. 8176 kHz, J3E. 0357, 0757. Maritime Safety Information (MSI).
3886 Perth. 8176 kHz, J3E. 0657, 1057. Maritime Safety Information (MSI).
Ch. 16, 67, F3E. 1118, 2318. Local navigational warnings and weather.
3892 Port Hedland. 8176 kHz, J3E. 0457, 0857. Maritime Safety Information (MSI).
3900 Darwin. 8176 kHz, J3E. 0157, 0957. Maritime Safety Information (MSI).
Ch. 67, F3E. 0833, 2233. Weather.
3901 Charleville (VMC). 4426, 8176, 12365, 16546 Every hour +00m (2100-0800), Weather.
kHz, J3E. 0030, 0130, 0230, 0330, 0430,
0530, 0630, 0730, 2130, 2230,
2330.
2201, 6507, 8176, 12365 kHz, Every hour +00m (0800-2100), Weather.
J3E. 0830, 0930, 1030, 1130, 1230,
1330, 1430, 1530, 1630, 1730,
1830, 1930, 2030.
2628, 5100, 11030, 13920 0900-1900. Weather FAX*; 120/576.

kHz, F3C.
5100, 11030, 13920, 20469 1900-0900. Weather FAX*; 120/576.

kHz, F3C.
*NOTE: Broadcast schedule at 0015-0045, 1215-1245.
3902 Wiluna (VMW). 4149, 8113, 12362, 16528 Every hour +00m (2300-1000), Weather.
kHz, J3E. 0030, 0130, 0230, 0330, 0430,
0530, 0630, 0730, 0830, 0930,
2330.
2056, 6230, 8113, 12362 kHz, Every hour +00m (1000-2300), Weather.
J3E. 1030, 1130, 1230, 1330, 1430,
1530, 1630, 1730, 1830, 1930,
2030, 2130, 2230.
5755, 7535, 10555, 15615 1100-2100. Weather FAX*; 120/576.

kHz, F3C.
7535, 10555, 15615, 18060 2100-1100. Weather FAX*; 120/576.

kHz, F3C.
*NOTE: Broadcast schedule at 0015-0045, 1215-1245.
3 - 76
(1) (2) (3) (4) (5)

NEW ZEALAND
NAVAREA XIV:
Includes the waters of the South Pacific from the Equator to Antarctica bound on the west by 170°E south to the Tasman Sea and 160°E south to Antarctica and
bound on the east by 120°W. Original reports to the nearest coast radio station or by mail to NAVAREA XIV Coordinator, Hydrographer, RNZN, Auckland.
3904 Taupo Maritime Radio (ZLM). 2207, 4146, 6224 kHz, J3E. 0133, 0533, 1333, 1733 (1 hr. Local navigational warnings and weather.
earlier when daylight savings in
effect).
6224, 12356 kHz, J3E. 0303, 0903, 1503, 2103 (1 hr. NAVAREA XIV and weather.
effect).
8297, 16531 kHz, J3E. 0333, 0933, 1533, 2133 (1 hr. NAVAREA XIV and weather.
effect).
2207, 4146, 6224 kHz, J3E. 0803, 1203, 2003 (1 hr. earlier Weather.
when daylight savings in effect).
Ch. 67, 68, 71, F3E. 0533, 0733, 1033, 1333, 1733, Local navigational warnings and weather.
savings in effect).
GUAM
3913 Guam (NRV) 12579, 16806.5, 22376 kHz, 0230, 0500, 0900, 1500, 1900, Maritime Safety Information (MSI) (HF NBDP)
U.S. Coast Guard. F1B. 2315. (HYDROPAC at 0230, 0900).
2670 kHz, J3E. 0705, 2205. Local Notice to Mariners and weather.
13089 kHz, J3E. 0330, 2130. Maritime Safety Information (MSI).
6501 kHz, J3E. 0930, 1530. Maritime Safety Information (MSI).
518 kHz, F1B. 0100, 0500, 0900, 1300, 1700, NAVTEX [V].
2100.
NEW CALEDONIA
3940 Noumea (FJP). Ch. 23, 24, 25, 26, 28, 82, 83, Every hour +03m, +33m. Weather in French and in English on request.
87, F3E.
Ch. 23, 24, 25, 26, 28, 82, 83, 0415, 0730, 1930, 2230. Local navigational warnings and weather in
87, F3E. French and in English on request.
FRENCH POLYNESIA
3943 Mahina. 2620, 8805.7 kHz, J3E. 0030, 0230, 1845, 2100. Local navigational warnings.
8805.7 kHz, J3E. 0640, 2100. Weather in French.
FIJI
3945 Suva (3DP). 4372, 8746 kHz, J3E. 0003, 0403, 0803, 2003. Local navigational warnings and weather.
4372, 8746 kHz, J3E. Every hour +03m. Weather.
AMERICAN SAMOA
3948 Pago Pago (KUQ). 8585 kHz, A1A. 0000, 0400, 1600, 2000. Local navigational warnings (weather at 0400,
2000).
6361 kHz, A1A. 0800. Local navigational warnings.
TONGA
3949 Nukualofa (A3A). 2080, 6230 kHz, J3E, Ch. 26, 0135, 0835, 2035. Local navigational warnings.
F3E.
2080, 6230 kHz, J3E, Ch. 26, 0134, 0834, 2034. Weather.
F3E.
3 - 77
300M. WorldWide Navigational Warning Service

NAVAREA Coordinators
NAVAREA I (United Kingdom) NAVAREA V (Brazil)

The Hydrographer of the Navy Diretoria de Hidrografia e Navegaçao
United Kingdom Hydrographic Office Rua Barao de Jaceguay S/N˚
Admiralty Way Ponta da Armaçao
Taunton, Somerset TA1 2DN, United Kingdom 24048-900 Niteroi - RJ, Brazil
Phone: 44 1823 723316, Fax: 44 1823 322352 Phone: 55 21 2620 0073/2613 8210
E-mail: rnwuser@ukhornw.u-net.com Fax: 55 21 2620 7291/2613 8210
Website: http://www.hydro.gov.uk E-mail: 331@chm.mar.mil.br
Website: http://www.dhn.mar.mil.br
Baltic Sea Sub-Area NAVAREA I (Sweden)
Swedish Maritime Administration NAVAREA VI (Argentina)
BALTICO Servicio de Hidrografia Naval
S-601 78 Norrkoping, Sweden Avenida Montes de Oca 2124
Phone: 46 11 19 10 45 C 1270ABV Buenos Aires, Argentina
Fax: 46 11 238945 (07-15 UTC) Phone: 54 11 4301 2249/0061/0067
Fax: 54 11 4303 2299/4301 2249
46 8 6017969 (15-07 UTC)
E-mail: snautica@hidro.gov.ar
Telex: 64320 BALTICO S (07-15 UTC) Website: http://www.hidro.gov.ar
16060 STORDO S (15-07 UTC)
E-mail: ntm.baltico@sjofartsverket.se (07-15) NAVAREA VII (Republic of South Africa)
baltico@stockholmradio.se (15-07) Hydrographic Office
Website: http://www.sjofartsverket.se Private Bag X1, Tokai
7966 Cape Town, South Africa
NAVAREA II (France) Phone: 27 21 787 2445/2444, Fax: 27 21 787 2228
Navarea II Co-ordinator E-mail: hydrosan@iafrica.com
EPSHOM BREST Website: http://www.sanho.co.za
13 Rue du Chatellier
BP 30316 NAVAREA VIII (India)
29603 Brest Cedex, France National Hydrographic Office
Phone: 33 2 98221667, Fax: 33 2 98221432 Post Box No. 75
E-mail: coord.navarea2@shom.fr 107-A Rajpur Road
Website: http://www.shom.fr Dehradun 248001, India
Phone: 91 135 2747360/65, Fax: 91 135 2748373
NAVAREA III (Spain) E-mail: nho@sancharnet.in
Mares Mediterraneo y Negro Website: http://www.hydrobharat.org
Instituto Hidrográfico de la Marina
Plaza San Severiano, 3 NAVAREA IX (Pakistan)
11007 Cadiz, Spain Hydrographic Department
Phone: 34 956 599 409 (HJ) Naval Headquarters
34 956 599 409 (H24) 11, Liaquat Barracks
Fax: 34 956 599 396 Karachi 75530 Pakistan
Telex: 76147 MEDCO E Phone: 92 21 48506151/52
76102 MARIH E Fax: 92 21 9201623/9203246/9203258
E-mail: ihmesp@retemail.es (Not for Warnings) Telex: 20774 HDRO PK
Website: none E-mail: hydropk@bol.edu.pk
Website: http://www.paknavy.gov.pk/hydro/
NAVAREA IV and XII (United States)
National Geospatial-Intelligence Agency NAVAREA X (Australia)
Attn: PVM (Mail Stop D-44) Australian Search and Rescue (AusSAR)
4600 Sangamore Road Australian Maritime Safety Authority (AMSA)
Bethesda, Maryland 20816-5003 GPO Box 2181
Phone: (1) 301-227-3147, Fax: (1) 301-227-3731 Canberra Act 2601
Telex: 898334/EASYLINK MBS 62554950 Australia
E-mail: navsafety@nga.mil Phone: 61 2 6230 6811, Fax: 61 2 6230 6868
Website: http://pollux.nss.nga.mil E-mail: rccaus@amsa.gov.au
Website: http://www.amsa.gov.au
3 - 78
NAVAREA XI (Japan) Devonport

Notices to Mariners Division Auckland 9, New Zealand
Hydrographic and Oceanographic Department Phone: 64 9 445 5644, Fax: 64 9 445 5589
Japan Coast Guard E-mail: brian.twyman@nzdf.mil.nz
3-1, Tsukiji, 5-chome Website: http://www.hydro.linz.govt.nz
Chuo-ku, Tokyo 104-0045 Japan
Phone: 81 3 3541 3812/3817, Fax: 81 3 3542 7174 NAVAREA XV (Chile)
Telex: 2522222 JAHYD J Director del Servicio Hidrográfico y Oceanográfico de la
E-mail: tuho@jodc.go.jp Armada de Chile
Website: http://www1.kaiho.mlit.go.jp/jhd-E.html Casilla 324
Valparaiso, Chile
NAVAREA XIII (Russian Federation) Phone: 56 32 266666, Fax: 56 32 266542
Department of Navigation and Oceanography E-mail: shoa@shoa.cl
8, 11 Liniya, B-34 Website: http://www.shoa.cl
Saint Petersburg 199034, Russia
Phone: 7 812 277 1511, Fax: 7 812 323 7548 NAVAREA XVI (Peru)
Telex: 121531 NAVIO RU Dirección de Hidrografia y Navegación de la Marina
E-mail: gunio@homepage.ru Avenida Gamarra No. 500
Website: none Chucuito, Callao 1, Peru
Phone: 51 1 465 8312/429 6019/429 9063
NAVAREA XIV (New Zealand) Fax: 51 1 465 2995
NZDF Joint Geospatial Support Facility E-mail: dihidronav@dhn.mil.pe
HMNZ Naval Base Website: http://www.dhn.mil.pe/
Private Bag 32901
Chairman
IHO Commission on Promulgation of Radio
Navigational Warnings
4 quai Antoine 1er
B.P. 445
MC 98011 MONACO CEDEX
Principality of Monaco
Telephone: 337-93-10-81-00
Fax: 337-93-10-81-40
Telex: 479164 MC INHORG
E-mail: info@ihb.mc
Website: http://www.iho.shom.fr
3 - 79
CHAPTER 4
DISTRESS, EMERGENCY, AND SAFETY TRAFFIC
PART I
400A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

400B. Obligations and Responsibilities of U.S. Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
400C. Reporting Navigational Safety Information to Shore Establishments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
400D. Assistance by SAR Aircraft and Helicopters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
400E. Reports of Hostile Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
400F. Emergency Position Indicating Radio Beacons (EPIRBs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
400G. Global Maritime Distress and Safety System (GMDSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
400H. The Inmarsat System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
400I. The SafetyNET System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
400J. Inmarsat-C SES Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41
400K. Digital Selective Calling (DSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41
400L. Use of GMDSS Equipment for Routine Telecommunications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
400M. Instructions for Canceling Inadvertent Distress Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
List of Operational VHF DSC Coast Stations for Sea Areas A1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
List of Operational MF DSC COAST Stations for Sea Areas A2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82
List of Operational HF DSC COAST Stations for Sea Areas A3 and A4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-91
PART II
410A. Requests for U.S. Navy Assistance in Emergency Situations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-94

APPENDIX A Ocean Areas and Command Centers/Communications Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-96
APPENDIX B High Frequencies Guarded by Air Force, Navy, Coast Guard,
and Commercial Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-98
List of Inmarsat Coast Earth Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-107
List of Rescue Coordination Centers using Ship Earth Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-109
4-1
CHAPTER 4
PART I
400A. General equipment used by stations operating in conformity with

Radio Regulations for distress and safety communications
The transition period for implementation of the Global for non-GMDSS vessels (Appendix 13), shall comply with
Maritime Distress and Safety System (GMDSS) began on the appropriate provisions of those Regulations.
1 February 1992 and continued to 1 February 1999. This The International Convention for the Safety of Life at
event marked the most important change in maritime safety Sea (SOLAS), 1974 as amended, prescribes which ships
since the advent of radio in 1899. The proven benefits of and which of their survival craft shall be provided with
satellite communications (high reliability, simple radio equipment, and which ships shall carry portable radio
operation, and multi-modal capacities) are the cornerstone equipment for use in survival craft. It also prescribes the
of this system, which relies heavily on automation and the requirements which shall be met by such equipment.
extensive use of Inmarsat satellites. The result will be a Ship earth stations located at RCCs may be authorized
total transformation of the existing maritime distress by an administration to communicate for distress and
communications system. For further information on safety purposes with any other station using bands
GMDSS see sec. 400G. allocated to the maritime mobile-satellite service, when
Regulations concerning distress, emergency, and safety special circumstances make it essential, notwithstanding
traffic are contained in the Radio Regulations of the the methods of working provided for in these Regulations.
International Telecommunication Union (ITU), Geneva. Mobile stations of the maritime mobile service may
Pertinent information is extracted below in condensed communicate, for safety purposes, with stations of the
form from the 2001 edition. aeronautical mobile service. Such communications shall
normally be made on the frequencies authorized, and under
ARTICLE 30, GENERAL PROVISIONS: the conditions specified in the Radio Regulations.
Section I - Introduction: This Chapter contains the
provisions for the operational use of the Global Maritime ARTICLE 31, FREQUENCIES FOR THE GLOBAL
Distress and Safety System (GMDSS), which is fully MARITIME DISTRESS AND SAFETY SYSTEM
defined in the International Convention for the Safety of (GMDSS):
Life at Sea (SOLAS), 1974, as amended. Distress, urgency Section I - General: The frequencies to be used for the
and safety transmissions may also be made, using Morse transmission of distress and safety information under the
telegraphy or radiotelephony techniques, in accordance GMDSS are shown in the following tables. In addition to
with the provisions of Radio Regulations for distress and the frequencies listed, coast stations should use other
safety communications for non-GMDSS vessels appropriate frequencies for the transmission of safety
(Appendix 13), and relevant ITU-R Recommendations. messages.
No provision of these Regulations prevents the use by a Any emission causing harmful interference to distress
mobile station or a mobile earth station in distress of any and safety communications on any of the discrete
means at its disposal to attract attention, make known its frequencies identified in the following tables is prohibited.
position, and obtain help. The number and duration of test transmissions shall be
No provision of these Regulations prevents the use by kept to a minimum on the frequencies identified below;
stations on board aircraft, ships engaged in search and they should be coordinated with a competent authority, as
rescue (SAR) operations, land stations, or coast earth necessary, and, wherever practicable, be carried out on
stations, in exceptional circumstances, of any means at artificial antennas or with reduced power. However, testing
their disposal to assist a mobile station or a mobile earth on the distress and safety calling frequencies should be
station in distress. avoided, but where this is unavoidable, it should be
Section II - Maritime provisions: The provisions indicated that these are test transmissions.
specified in this Chapter are obligatory in the maritime Before transmitting for other than distress purposes on
mobile service and the maritime mobile-satellite service any of the frequencies identified below for distress and
for all stations using the frequencies and techniques safety, a station shall, where practicable, listen on the
prescribed for the functions set out herein. However, frequency concerned to make sure that no distress
stations of the maritime mobile service, when fitted with transmission is being sent.
4-3
Table of Frequencies below 30 MHz
Frequency Description Notes

(MHz) of usage
490 MSI Used only for maritime safety information (MSI) in a national language through the
international NAVTEX system.
518 MSI Used only for MSI in the English language by the international NAVTEX system.
*2174.5 NBDP Used only for distress and safety communications (traffic) using NBDP telegraphy.
*2182 RT A carrier frequency used for distress and safety communications (traffic) by RT.
2182 kHz uses class of emission J3E.
*2187.5 DSC Used only for distress and safety calls using digital selective calling in accordance with the
Radio Regulations.
3023 AERO-SAR An aeronautical carrier (reference) frequency which may be used for intercommunication
between mobile stations engaged in coordinated SAR operations, and for communication
between these stations and participating land stations.
*4125 RT A ship station carrier frequency for calling on RT.

4125 kHz is authorized for common use by coast and ship stations for SSB RT on a
simplex basis for call and reply purposes, provided the peak power does not exceed 1 kW.
The use of this frequency for working purposes is not permitted.
simplex basis for distress and safety traffic.
In the United States, 4125 kHz is authorized for common use by coast and ship stations for
SSB RT on a simplex basis, provided the peak power does not exceed 1 kW.
Aircraft stations may use this frequency to communicate with stations of the maritime
mobile service for distress and safety purposes, including SAR.
Radio Regulations.
4209.5 MSI Used only for NAVTEX-type transmissions.
4210 MSI-HF Used only for the transmission of high seas MSI by coast stations to ships, by means of
NBDP telegraphy, in the maritime mobile service.
5680 AERO-SAR An aeronautical carrier (reference) frequency which may be used for intercommunication
between mobile stations engaged in coordinated SAR operations, and for communication
between these stations and participating land stations.
*6215 RT A ship station carrier frequency for calling on RT.

simplex basis for call and reply purposes, provided the peak power does not exceed 1 kW.
The use of this frequency for working purposes is not permitted.
simplex basis for distress and safety traffic.
Aircraft stations may use this frequency to communicate with stations of the maritime
mobile service for distress and safety purposes, including SAR.
*6268 NBDP Used only for distress and safety communications (traffic) using NBDP telegraphy.
Note: Except as provided in these Regulations, any emission capable of causing harmful interference to distress, alarm,
urgency or safety communications on the frequencies denoted by an asterisk (*) is prohibited.
4-4
Table of Frequencies below 30 MHz

(MHz) of usage
*6312 DSC Used only for distress and safety calls using digital selective calling in accordance with the
Radio Regulations.
*8291 RT Used only for distress and safety communications (traffic) by RT.
Radio Regulations.
8416.5 MSI-HF Used only for the transmission of high seas MSI by coast stations to ships, by means of
*12577 DSC Used only for distress and safety calls using digital selective calling in accordance with the
Radio Regulations.
Radio Regulations.
4-5
Table of Frequencies above 30 MHz

(MHz) of usage
*121.5 AERO-SAR The aeronautical emergency frequency 121.5 MHz is used for the purposes of distress
and urgency for RT by stations of the aeronautical mobile service using frequencies in
the band between 117.975 MHz and 137 MHz. This frequency may also be used for
these purposes by survival craft stations. EPIRBs use this frequency as indicated in the
Radio Regulations.
Mobile stations of the maritime mobile service may communicate with stations of the
aeronautical mobile service on the aeronautical emergency frequency 121.5 MHz for
the purposes of distress and urgency only, and on the aeronautical auxiliary frequency
123.1 MHz for coordinated SAR operations, using class A3E emissions for both
frequencies. They shall then comply with any special arrangement between
governments concerned by which the aeronautical mobile service is regulated.
123.1 AERO-SAR The aeronautical auxiliary frequency 123.1 MHz, which is auxiliary to the aeronautical
emergency frequency 121.5 MHz, is for use by stations of the aeronautical mobile
service and by other mobile and land stations engaged in coordinated SAR operations.
Mobile stations of the maritime mobile service may communicate with stations of the
aeronautical mobile service on the aeronautical emergency frequency 121.5 MHz for
the purposes of distress and urgency only, and on the aeronautical auxiliary frequency
123.1 MHz for coordinated SAR operations, using class A3E emissions for both
frequencies. They shall then comply with any special arrangement between
governments concerned by which the aeronautical mobile service is regulated.
156.3 VHF (Ch. 06) Used for communication between ship stations and aircraft stations engaged in
coordinated SAR operations. It may also be used by aircraft stations to communicate
with ship stations for other safety purposes. Ship stations shall avoid harmful
interference to such communications on Ch. 06 as well as to communications between
aircraft stations, ice-breakers and assisted ships during ice seasons.
*156.525 VHF (Ch. 70) Used in the maritime mobile service for distress and safety calls using digital selective
calling.
156.650 VHF (Ch. 13) Used on a worldwide basis for ship-to-ship communications relating to the safety of
navigation. It may also be used for the ship movement and port operations service
subject to the national regulations of the administrations concerned.
*156.8 VHF (Ch. 16) Used for distress and safety communications by RT. It may also be used by aircraft
stations for safety purposes only.
*406-406.1 406-EPIRB This frequency band is used only by satellite EPIRBs in the Earth-to-space direction.
1530-1544 SAT-COM In addition to its availability for routine non-safety purposes, this frequency band is
used for distress and safety purposes in the space-to-Earth direction in the maritime
mobile-satellite service. GMDSS distress, urgency and safety communications have
priority in this band.
*1544-1545 D&S-OPS Use of this band (space-to-Earth) is limited to distress and safety operations, including
feeder links of satellites needed to relay emissions of satellite EPIRBs to earth stations
and narrow-band (space-to-Earth) links from space stations to mobile stations.
4-6
Table of Frequencies above 30 MHz

(MHz) of usage
1626.5-1645.5 SAT-COM In addition to its availability for routine non-safety purposes, this frequency band is
used for distress and safety purposes in the Earth-to-space direction in the maritime
mobile-satellite service. GMDSS distress, urgency and safety communications have
priority in this band.
*1645.5-1646.5 D&S-OPS Use of this band (Earth-to-space) is limited to distress and safety operations, including
transmissions from satellite EPIRBs and relay of distress alerts received by satellites in
low polar Earth orbits to geostationary satellites.
9200-9500 SARTS Used by radar transponders to facilitate SAR.
watch on VHF Ch. 16; such a watch shall be kept at the

Section II - Survival craft stations: Equipment for position from which the ship is normally navigated.
radiotelephony use in survival craft stations shall, if Ship stations complying with the provisions of the Radio
capable of operating on any frequency in the bands Regulations should, where practicable, maintain a watch
between 156 MHz and 174 MHz, be able to transmit and on the frequency 156.650 MHz (VHF Ch. 13) for
receive on 156.8 MHz and at least one other frequency in communications related to the safety of navigation.
these bands. (D) - Ship earth stations: Ship earth stations complying
Equipment for transmitting locating signals from with the provisions of the Radio Regulations shall, while at
survival craft stations shall be capable of operating in the sea, maintain watch except when communicating on a
9200-9500 MHz band. working channel.
Equipment with DSC facilities for use in survival craft
shall, if capable of operating in the bands between: ARTICLE 32, OPERATIONAL PROCEDURES FOR
– 1605 and 2850 kHz, be able to transmit on 2187.5 kHz; DISTRESS AND SAFETY COMMUNICATIONS IN
– 4000 and 27500 kHz, be able to transmit on 8414.5 kHz; THE GMDSS:
– 156 and 174 MHz, be able to transmit on 156.525 MHz. Section I - General: Distress and safety communications
Section III - Watchkeeping: rely on the use of terrestrial MF, HF and VHF
(A) - Coast stations: Those coast stations assuming a radiocommunications and communications using satellite
watch-keeping responsibility in the GMDSS shall maintain techniques.
an automatic DSC watch on frequencies and for periods of The distress alert shall be sent through a satellite either
time as indicated in the information published in the List of with absolute priority in general communication channels
Coast Stations. or on exclusive distress and safety frequencies or,
(B) - Coast earth stations: Those coast earth stations alternatively, on the distress and safety frequencies in MF,
assuming a watch-keeping responsibility in the GMDSS HF and VHF bands using DSC.
shall maintain a continuous automatic watch for The distress alert shall be sent only on the authority of
appropriate distress alerts relayed by space stations. the person responsible for the ship, aircraft or other vehicle
(C) - Ship stations: Ship stations, where so equipped, carrying the mobile station or the mobile earth station.
shall, while at sea, maintain an automatic DSC watch on All stations which receive a distress alert transmitted by
the appropriate distress and safety calling frequencies in DSC shall immediately cease any transmission capable of
the frequency bands in which they are operating. Ship interfering with distress traffic and shall continue watch
stations, where so equipped, shall also maintain watch on until the call has been acknowledged.
the appropriate frequencies for the automatic reception of DSC shall be in accordance with the relevant ITU-R
transmissions of meteorological and navigational warnings Recommendations.
and other urgent information to ships. However, ship Each administration shall ensure that suitable
stations shall also continue to apply the appropriate arrangements are made for assigning and registering
watch-keeping provisions of the Radio Regulations for identities used by ships participating in the GMDSS, and
distress and safety communications for non-GMDSS shall make registration information available to RCCs on a
vessels (Appendix 13). 24-hour day, 7-day week basis. Where appropriate,
administrations shall notify responsible organizations
NOTE: Listening watches on 2182 kHz are no longer immediately of additions, deletions and other changes in
mandatory. Until 1 February 2005, every ship while at sea these assignments. Registration information shall be in
shall maintain, when practicable, a continuous listening accordance with the Radio Regulations (Resolution 340).
4-7
Any GMDSS shipboard equipment which is capable of PBL - Preamble, used after question mark in telegraphy,
transmitting position coordinates as part of a distress alert RQ in telephony, or RPT, to request repetition
message and which does not have an integral electronic PSE - Please
position-fixing system receiver shall be interconnected to a R - Received
separate navigation receiver, if one is installed, to provide RCC - Rescue coordination center
that information automatically. REF - Reference
Transmissions by radiotelephony shall be made slowly RPT - Repeat
and distinctly, each word being clearly pronounced to RQ - Request
facilitate transcription. S - South
The Phonetic Alphabet and Figure Code, and the SAR - Search and rescue
abbreviations and prosigns listed below, in accordance SIG - Signature, used after question mark in radiotelegraphy,
with the Radio Regulations, should be used where RQ in telephony, or RPT, to request repetition
applicable. The Standard Marine Communication Phrases SLT - Radiomaritime letter
(published by the International Maritime Organization SVC - Prefix indicating service message
(IMO)) and the International Code of Signals SYS - Refer to your service message
(CDPUBNV102) are also recommended for use. (NOTE: TFC - Traffic
Three-letter signals (Q Code) are also listed in ACP 131, TR - Land station request for position and next port of call;
Communications Instructions, Operating Signals.) also precedes response
TU - Thank you
AA - All After TXT - Text
AB - All Before VA - End of work
ADS - Address W - West
AR - End of transmission (in telegraphy, a bar over the letters WA - Word after
means they are sent as one signal: • – • – • ) WB - Word before
AS - Waiting period WD - Word(s) or group(s)
BK - Interruption of transmission in progress WX- Weather
BN - All between XQ- Prefix indicating service note
BQ - Reply to RQ YZ - Plain language
BT - Separation between parts of a transmission
C - Affirmative Section II - Distress alerting:
CFM - Confirm/I confirm (A) - General: The transmission of a distress alert
CL - I am closing my station indicates that a mobile unit (ship, aircraft or other vehicle)
COL - Collate/I collate or person is threatened by grave and imminent danger and
CORRECTION - Cancel last word or group requests immediate assistance. The distress alert is a digital
CP - General call to two or more specified stations selective call using distress call format in the bands used
CQ - General call to all stations for terrestrial radiocommunication or a distress message
CS - Request for call sign format, in which case it is relayed through space stations.
DE - From (The format of distress calls and distress messages shall be
DF - Precede time, bearing, possible error in accordance with the relevant ITU-R Recommendations.)
DO - Bearing doubtful, request again at specified time The distress alert shall provide the identification of the
DSC - Digital selective calling station in distress and its position. (It may also contain
E - East information regarding the nature of the distress, the type of
ETA - Estimated time of arrival assistance required, the course and speed of the mobile
INTERCO - Signals from International Code will follow unit, the time that this information was recorded and any
K - Invitation to transmit other information which might facilitate rescue.)
KA - Starting signal A distress alert is false if it was transmitted without any
KTS - Knots indication that a mobile unit or person was in distress and
MIN - Minutes required immediate assistance. Administrations receiving a
MSG - Prefix indicating message to or from Master false distress alert shall report this infringement, if that
regarding ship’s operation or navigation alert:
MSI - Marine safety information
N - North – was transmitted intentionally;
NBDP - Narrow band direct printing telegraphy – was not cancelled in accordance with the Radio
NIL - I have nothing to send you Regulations (Resolution 349);
NO - Negative – could not be verified as a result of either the ship’s
NW - Now failure to keep watch on appropriate frequencies in
NX - Notice to Mariners accordance with the Radio Regulations, or its failure to
OK - It is correct respond to calls from an authorized rescue authority;
OL - Ocean letter – was repeated; or
P - Prefix indicating private radiotelegram – was transmitted using a false identity.
4-8
Administrations receiving such a report shall take – the distress signal MAYDAY.
appropriate steps to ensure that the infringement does not The acknowledgment by direct printing telegraphy of
recur. No action should normally be taken against any ship receipt of a distress alert from a ship station shall be
or mariner for reporting and cancelling a false distress given in the following form:
alert. – the distress signal MAYDAY;
(B) - Transmission of a distress alert: – the call sign or other identification of the station
– (B1) - Transmission of a distress alert by a ship station or sending the distress alert;
a ship earth station: Ship-to-shore distress alerts are used – the word DE;
to alert RCCs via coast stations or coast earth stations – the call sign or other identification of the station
that a ship is in distress. These alerts are based on the use acknowledging receipt of the distress alert;
of transmissions via satellites (from a ship earth station – the signal RRR;
or satellite EPIRB) and terrestrial services (from ship – the distress signal MAYDAY.
stations and EPIRBs). The acknowledgment by direct printing telegraphy of
Ship-to-ship distress alerts are used to alert other ships receipt of a distress alert from a ship earth station shall
in the vicinity of the ship in distress and are based on the be given by the coast earth station receiving the distress
use of DSC in the VHF and MF bands. Additionally, the alert, by retransmitting the ship station identity of the
HF band may be used. ship transmitting the distress alert.
– (B2) - Transmission of a shore-to-ship distress alert – (C2) - Receipt and acknowledgment of receipt by a coast
relay: A station or RCC which receives a distress alert station, a coast earth station or a RCC: Coast stations and
shall initiate the transmission of a shore-to-ship distress appropriate coast earth stations in receipt of distress
alert relay addressed, as appropriate, to all ships, to a alerts shall ensure that they are routed as soon as possible
selected group of ships or to a specific ship by satellite to a RCC. Receipt of a distress alert is to be
and/or terrestrial means. acknowledged as soon as possible by a coast station, or
The distress alert relay shall contain the identification by a RCC via a coast station or an appropriate coast earth
of the mobile unit in distress, its position and all other station.
information which might facilitate rescue. A coast station using DSC to acknowledge a distress
– (B3) - Transmission of a distress alert by a station not call shall transmit the acknowledgment on the distress
itself in distress: A station in the mobile or calling frequency on which the call was received and
mobile-satellite service which learns that a mobile unit is should address it to all ships. The acknowledgment shall
in distress shall initiate and transmit a distress alert in include the identification of the ship whose distress call
any of the following cases: is being acknowledged.
– when the mobile unit in distress is not itself in a – (C3) - Receipt and acknowledgment of receipt by a ship
position to transmit the distress alert; station or ship earth station: Ship or ship earth stations in
– when the Master or person responsible for the mobile receipt of a distress alert shall, as soon as possible,
unit not in distress considers further help is necessary. inform the Master or person responsible for the ship of
A station transmitting a distress alert relay, in the contents of the distress alert.
accordance with the Radio Regulations, shall indicate In areas where reliable communications with one or
that it is not itself in distress. more coast stations are practicable, ship stations in
(C) - Receipt and acknowledgment of distress alerts: receipt of a distress alert should defer acknowledgment
– (C1) - Procedure for acknowledgment of receipt of for a short interval so that receipt may be acknowledged
distress alerts: Acknowledgment by DSC of receipt of a by a coast station.
distress alert in the terrestrial services shall be in Ship stations operating in areas where reliable
accordance with relevant ITU-R Recommendations. (For communications with a coast station are not practicable
further information on procedures for DSC distress which receive a distress alert from a ship station which
alerts, acknowledgments and relays see sec. 400J.) is, beyond doubt, in their vicinity, shall, as soon as
Acknowledgment through a satellite of receipt of a possible and if appropriately equipped, acknowledge
distress alert from a ship earth station shall be sent receipt and inform a RCC through a coast station or coast
immediately. earth station.
Acknowledgment by radiotelephony of receipt of a However, a ship station receiving an HF distress alert
distress alert from a ship station or a ship earth station shall not acknowledge it but shall observe the provisions
shall be given in the following form: of D below, and shall, if the alert is not acknowledged by
– the distress signal MAYDAY; a coast station within 3 minutes, relay the distress alert.
– the call sign or other identification of the station A ship station acknowledging receipt of a distress alert
sending the distress message, spoken three times; in accordance with C3 above should:
– the words THIS IS (or DE spoken as DELTA ECHO in – in the first instance, acknowledge receipt of the alert
case of language difficulties); by using radiotelephony on the distress and safety
– the call sign or other identification of the station traffic frequency in the band used for the alert;
acknowledging receipt, spoken three times; – if acknowledgment by radiotelephony of the distress
– the word RECEIVED (or RRR spoken as ROMEO alert received on the MF or VHF distress alerting
ROMEO ROMEO in case of language difficulties); frequency is unsuccessful, acknowledge receipt of the
4-9
distress alert by responding with a digital selective call do so when the distress traffic is well established and on
on the appropriate frequency. condition that it observes the provisions of the above
A ship station in receipt of a shore-to-ship distress alert paragraph and that it does not interfere with distress traffic.
should establish communication as directed and render When distress traffic has ceased on frequencies which
such assistance as required and appropriate. have been used for distress traffic, the RCC controlling a
(D) - Preparations for handling of distress traffic: On SAR operation shall initiate a message for transmission on
receipt of a distress alert transmitted by use of DSC these frequencies indicating that distress traffic has
techniques, ship stations and coast stations shall set watch finished.
on the radiotelephone distress and safety traffic frequency In radiotelephony, the message referred to in the above
associated with the distress and safety calling frequency on paragraph consists of:
which the distress alert was received. – the distress signal MAYDAY;
Coast stations and ship stations with NBDP equipment – the call “Hello all stations” or CQ (spoken as CHARLIE
shall set watch on the NBDP frequency associated with the QUEBEC) spoken three times;
distress alert signal if it indicates that NBDP is to be used – the words THIS IS (or DE spoken as DELTA ECHO in
for subsequent distress communications. If practicable, the case of language difficulties);
they should additionally set watch on the radiotelephone – the call sign or other identification of the station sending
frequency associated with the distress alert frequency. the message;
Section III - Distress traffic: – the time of handing in of the message;
(A) - General and SAR coordinating communications: – the name and call sign of the mobile station which was in
Distress traffic consists of all messages relating to the distress;
immediate assistance required by the ship in distress, – the words SEELONCE FEENEE.
including SAR communications and on scene In direct printing telegraphy, the message referred to in
communications. The distress traffic shall as far as possible the above paragraph consists of:
be on the frequencies con tained in Article 31 (see above). – the distress signal MAYDAY;
The distress signal consists of the word MAYDAY. – the call CQ;
For distress traffic by radiotelephony, when establishing – the word DE;
communications, calls shall be prefixed by the distress – the call sign or other identification of the station sending
signal MAYDAY. the message;
Error correction techniques in accordance with relevant – the time of handing in of the message;
ITU-R Recommendations shall be used for distress traffic – the name and call sign of the mobile station which was in
by direct printing telegraphy. All messages shall be distress; and
preceded by at least one carriage return, a line feed signal, – the words SILENCE FINI.
a letter shift signal and the distress signal MAYDAY. (B) - On scene communications: On scene
Distress communications by direct printing telegraphy communications are those between the mobile unit in
should normally be established by the ship in distress and distress and assisting mobile units, and between the mobile
should be in the broadcast (forward error correction) mode. units and the unit coordinating SAR operations (the OSC
The ARQ mode may subsequently be used when it is or CSS).
advantageous to do so. Control of on scene communications is the responsibility
The RCC responsible for controlling a SAR operation of the unit coordinating SAR operations. Simplex
shall also coordinate the distress traffic relating to the communications shall be used so that all on scene mobile
incident or may appoint another station to do so. stations may share relevant information concerning the
The RCC coordinating distress traffic, the unit distress incident. If direct printing telegraphy is used, it
coordinating SAR operations (the On Scene Commander shall be in the forward error correcting mode.
(OSC) or Coordinator Surface Search (CSS)) or the coast The preferred frequencies in radiotelephony for on scene
station involved may impose silence on stations which communications are 156.8 MHz (VHF Ch. 16) and 2182
interfere with that traffic. This instruction shall be kHz. The frequency 2174.5 kHz may also be used for
addressed to all stations or to one station only, according to ship-to-ship on scene communications using NBDP
circumstances. In either case, the following shall be used: telegraphy in the forward error correcting mode.
– in radiotelephony, the signal SEELONCE MAYDAY; In addition, the frequencies 3023 kHz, 4125 kHz, 5680
– in NBDP telegraphy normally using forward error kHz, 123.1 MHz, and 156.3 MHz (VHF Ch. 06) may be
correcting mode, the signal SILENCE MAYDAY. used for ship-to-aircraft on scene communications.
However, the ARQ mode may be used when it is The selection or designation of on scene frequencies is
advantageous to do so. the responsibility of the unit coordinating SAR operations.
Until they receive the message indicating that normal Normally, once an on scene frequency is established, a
working may be resumed, all stations which are aware of continuous aural or teleprinter watch is maintained by all
the distress traffic, and which are not taking part in it, and participating on scene mobile units on the selected
which are not in distress, are forbidden to transmit on the frequency.
frequencies in which the distress traffic is taking place. (C) - Locating and homing signals: Locating signals
A station of the mobile service which, while following are radio transmissions intended to facilitate the finding of
distress traffic, is able to continue its normal service, may a mobile unit in distress or the location of survivors. These
4 - 10
signals include those transmitted by searching units, and The urgency call format or the urgency signal may be
those transmitted by the mobile unit in distress, by survival transmitted by a land station or a coast earth station with
craft, by float-free EPIRBs, by satellite EPIRBs and by the approval of the responsible authority.
SAR radar transponders to assist the searching units. When an urgency message which calls for action by the
Homing signals are those locating signals which are stations receiving the message has been transmitted, the
transmitted by mobile units in distress, or by survival craft, station responsible for its transmission shall cancel it as
for the purpose of providing searching units with a signal soon as it knows that action is no longer necessary.
that can be used to determine the bearing to the Error correction techniques in accordance with relevant
transmitting stations. ITU-R Recommendations shall be used for urgency
Locating signals may be transmitted in the following messages by direct printing telegraphy. All messages shall
frequency bands: be preceded by at least one carriage return, a line feed
signal, a letter shift signal and the urgency signal PAN
– 117.975-136 MHz; PAN.
– 156-174 MHz; Urgency communications by direct printing telegraphy
– 406-406.1 MHz; should normally be established in the broadcast (forward
– 1645.5-1646.5 MHz; and error correction) mode. The ARQ mode may subsequently
– 9200-9500 MHz. be used when it is advantageous to do so.
Locating signals shall be in accordance with the relevant Section III - Medical transports: The term “medical
ITU-R Recommendations. transports,” as defined in the 1949 Geneva Conventions
and Additional Protocols, refers to any means of
ARTICLE 33, OPERATIONAL PROCEDURES FOR transportation by land, water or air, whether military or
URGENCY AND SAFETY COMMUNICATIONS IN civilian, permanent or temporary, assigned exclusively to
THE GMDSS: medical transportation and under the control of a
Section I - General: Urgency and safety communications competent authority of a party to a conflict or of neutral
include: States and of other States not parties to an armed conflict,
– navigational and meteorological warnings and urgent when these ships, craft, and aircraft assist the wounded, the
information; sick and the shipwrecked.
– ship-to-ship safety of navigation communications; For the purpose of announcing and identifying medical
– ship reporting communications; transports which are protected under the above-mentioned
– support communications for SAR operations; Conventions, the procedure of Section II of this Article
– other urgency and safety messages; (urgency communications) is used. The urgency signal
– communications relating to navigation, movements and (PAN PAN) shall be followed by the addition of the single
needs of ships, and weather observation messages word MEDICAL in NDBP and by the addition of the
destined for an official meteorological service. single word “MAY-DEE-CAL,” in radiotelephony.
Section II - Urgency communications: In a terrestrial The use of the signals described in the above paragraph
system the announcement of the urgency message shall be indicates that the message which follows concerns a
made on one or more of the distress and safety calling protected medical transport. The message shall convey the
frequencies as specified using DSC and the urgency call following data:
format. A separate announcement need not be made if the – call sign or other recognized means of identification of
urgency message is to be transmitted through the maritime the medical transport;
mobile-satellite service. – position of the medical transport;
The urgency signal and message shall be transmitted on – number and type of vehicles in the medical transport;
one or more of the distress and safety traffic frequencies – intended route;
specified, or via the maritime mobile-satellite service or on – estimated time enroute and of departure and arrival, as
other frequencies used for this purpose. appropriate;
The urgency signal consists of the words PAN PAN. – any other information, such as flight altitude, radio
The urgency call format and the urgency signal indicate frequencies guarded, languages used and secondary
that the calling station has a very urgent message to surveillance radar modes and codes.
transmit concerning the safety of a mobile unit or a person. The identification and location of medical transports at
In radiotelephony, the urgency message shall be sea may be conveyed by means of appropriate standard
preceded by the urgency signal (PAN PAN), repeated three maritime radar transponders.
times, and the identification of the transmitting station. The identification and location of aircraft medical
In NBDP, the urgency message shall be preceded by the transports may be conveyed by the use of the secondary
urgency signal (PAN PAN) and the identification of the surveillance radar (SSR) system specified in Annex 10 to
transmitting station. the Convention on International Civil Aviation.
The urgency call format or urgency signal shall be sent The use of radiocommunications for announcing and
only on the authority of the Master or the person identifying medical transports is optional; however, if they
responsible for the mobile unit carrying the mobile station are used, the provisions of the above Regulations shall
or mobile earth station. apply.
4 - 11
Section IV - Safety communications: In a terrestrial (B) - International NAVTEX system: MSI shall be
system the announcement of the safety message shall be transmitted by means of NBDP telegraphy with forward
made on one or more of the distress and safety calling error correction using the frequency 518 kHz in
frequencies as specified using DSC techniques. A separate accordance with the international NAVTEX system.
announcement need not be made if the message is to be (C) - 490 kHz and 4209.5 kHz: The frequency 490 kHz
transmitted through the maritime mobile-satellite service. may be used for the transmission of MSI by means of
The safety signal and message shall normally be NBDP telegraphy with forward error correction.
transmitted on one or more of the distress and safety traffic The frequency 4209.5 kHz is used exclusively for
frequencies specified, or via the maritime mobile-satellite NAVTEX-type transmissions by means of NBDP
service or on other frequencies used for this purpose. telegraphy with forward error correction.
The safety signal consists of the word SECURITE. (D) - High seas MSI: MSI is transmitted by means of
The safety call format or the safety signal indicates that NBDP telegraphy with forward error correction using the
the calling station has an important navigational or frequencies 4210 kHz, 6314 kHz, 8416.5 kHz, 12579 kHz,
meteorological warning to transmit. 16806.5 kHz, 19680.5 kHz, 22376 kHz and 26100.5 kHz.
In radiotelephony, the safety message shall be preceded (E) - MSI via satellite: MSI may be transmitted via
by the safety signal (SECURITE, spoken SECURITAY) satellite in the maritime mobile-satellite service using the
repeated three times, and identification of the transmitting band 1530-1545 MHz.
station. Section VI - Intership navigation safety
In NBDP, the safety message shall be preceded by the communications: Intership navigation safety
safety signal (SECURITE), and the identification of the communications are those VHF radiotelephone
transmitting station. communications conducted between ships for the purpose
Error correction techniques in accordance with relevant of contributing to the safe movement of ships.
ITU-R Recommendations shall be used for safety The frequency 156.650 MHz (VHF Ch. 13) is used for
messages by direct printing telegraphy. All messages shall intership navigation safety communications.
be preceded by at least one carriage return, a line feed Section VII - Use of other frequencies for distress and
signal, a letter shift signal and the safety signal safety: Radiocommunications for distress and safety
SECURITE. purposes may be conducted on any appropriate
Safety communications by direct printing telegraphy communications frequency, including those used for public
should normally be established in the broadcast (forward correspondence. In the maritime mobile-satellite service,
error correction) mode. The ARQ mode may subsequently frequencies in the bands 1530-1544 MHz and
be used when it is advantageous to do so. 1626.5-1645.5 MHz are used for this function as well as
Section V - Transmission of Maritime Safety for distress alerting purposes.
Information (MSI): (MSI includes navigation and Section VIII - Medical advice: Mobile stations
meteorological warnings, meteorological forecasts and requiring medical advice may obtain it through any of the
other urgent messages pertaining to safety normally land stations shown in the List of Radiodetermination and
transmitted to or from ships, between ships and between Special Service Stations. (In Pub. 117, see sec. 500B.)
ship and coast stations or coast earth stations.) Communications concerning medical advice may be
(A) - General: Messages from ship stations containing preceded by the urgency signal.
information concerning the presence of cyclones shall be
transmitted, with the least possible delay, to other mobile ARTICLE 34, ALERTING SIGNALS IN THE
stations in the vicinity and to the appropriate authorities at GMDSS:
the first point of the coast with which contact can be Section I - EPIRB and Satellite EPIRB Signals: The
established. These transmissions shall be preceded by the EPIRB signal transmitted on 156.525 MHz and satellite
safety signal. EPIRB signals in the band 406-406.1 MHz or
Messages from ship stations containing information on 1645.5-1646.5 MHz shall be in accordance with relevant
the presence of dangerous ice, dangerous wrecks, or any ITU-R Recommendations.
other imminent danger to marine navigation, shall be Section II - Digital selective calling (DSC): The
transmitted as soon as possible to other ships in the characteristics of the “distress call” in DSC system shall be
vicinity, and to the appropriate authorities at the first point in accordance with relevant ITU-R Recommendations.
of the coast with which contact can be established. These
transmissions shall be preceded by the safety signal. 400B. Obligations and Responsibilities of U.S.
The operational details of the stations transmitting MSI Vessels
in accordance with the provisions of B, C, D, and E below
shall be indicated in the List of Radiodetermination and It is the accepted normal practice of seamen (and there
Special Service Stations. (In Pub. 117, see station listings are obligations upon Masters), to render assistance when a
in sec. 300J, 300L and 400I.) person or persons are in distress at sea. These obligations
The mode and format of the transmissions mentioned in are set out in Regulation 10 of Chapter V of the 1974
B, C and D below shall be in accordance with the relevant SOLAS Convention (1974), to which the United States is
ITU-R Recommendations. signatory:
4 - 12
Distress Messages—Obligations and Procedures – All ships constructed before 1 February 1992 to carry a
radar transponder and two-way VHF radiotelephone for
(a) The Master of a ship at sea, on receiving a signal from survival craft by 1 February 1995.
any source that a ship or aircraft or survival craft – 1 February 1995 - Newly constructed applicable ships
thereof is in distress, is bound to proceed with all must be GMDSS-equipped.
speed to the assistance of the persons in distress, – All applicable ships to carry 9GHz radar by 1 February
informing them, if possible, that he is doing so. If he is 1995.
unable or, in the special circumstances of the case, – 1 February 1999 - All applicable ships must be
considers it unreasonable or unnecessary to proceed to GMDSS-equipped.
their assistance, he must enter in the logbook the The FCC has exempted GMDSS-equipped U.S. ships
reason for failing to proceed to the assistance of the from the Communications Act of 1934 requirements to
persons in distress. carry (and provide operators for) Morse telegraphy
(b) The Master of a ship in distress, after consultation, so equipment. This exemption is effective once the FCC, or
far as may be possible, with the Masters of the ships its designee, has determined and certified that the vessel
which answer his call for assistance, has the right to has GMDSS equipment installed and in good working
requisition such one or more of those ships as he condition. This exemption was mandated by the
considers best able to render assistance, and it shall be Telecommunications Act of 1996.
the duty of the Master or Masters of the ship or ships FCC rules applicable to the GMDSS include the
requisitioned to comply with the requisition by following:
continuing to proceed with all speed to the assistance – Required equipment must be inspected once every 12
of persons in distress. months.
(c) The Master of a ship shall be released from the – Ships must carry at least two persons with GMDSS
obligation imposed by paragraph (a) of this Regulation Radio Operators licenses, designated as primary and
when he learns that one or more ships other than his backup(s), to act as dedicated radio operator in case of
own have been requisitioned and are complying with distress and carry out normal communications watch
the requisition. routines (including selection of HF DSC channels,
(d) The Master of a ship shall be released from the reception of MSI, and entering ship’s position in DSC
obligation imposed by paragraph (a) of this equipment every 4 hours).
Regulation, and, if his ship has been requisitioned, – At-sea maintenance, if employed (the alternatives being
from the obligation imposed by paragraph (b) of this system redundancy or shore maintenance), must be
Regulation, if he is informed by the persons in distress provided by licensed GMDSS radio maintainers.
or by the Master of another ship which has reached – Ships operating in Sea Area A3 (beyond NAVTEX
such persons that assistance is no longer necessary. coverage: see sec. 400H) must carry equipment capable
(e) The provisions of this Regulation do not prejudice the of receiving MSI via Inmarsat Enhanced Group Calling
International Convention for the unification of certain (EGC) (SafetyNET).
rules with regard to Assistance and Salvage at Sea, – GMDSS equipment must be approved by the FCC and
signed at Brussels on 23 September 1910, particularly carry labels indicating compliance.
the obligation to render assistance imposed by Article – Inmarsat antennas should be installed so as to minimize
11 of that Convention. masking.
– A dedicated, non-scanning radio installation capable of
U.S. IMPLEMENTATION OF THE GMDSS: The maintaining a continuous DSC watch on VHF 156.525
Federal Communications Commission (FCC) adopted the MHz (Ch. 70) must be installed.
GMDSS requirements of the SOLAS Convention on 16 These changes are found in Parts 13 and 80 of Title 47 of
January 1992. (The GMDSS revisions to the Radio the Code of Federal Regulations.
Regulations were developed by the International Maritime INFORMATION REQUIRED CONCERNING
Organization (IMO) and ITU, and adopted by the ITU in NAVIGATIONAL DANGERS AND CYCLONES:
1987. The IMO adopted GMDSS requirements to the 1974 Vessels encountering imminent dangers to navigation or
SOLAS Convention in 1988.) GMDSS requirements apply cyclones should notify all ships in the vicinity and the
to the following U.S. vessels on international voyages or nearest coast station, using the safety signal. The following
on the open sea: information should be provided for navigational dangers:
– Cargo ships of 300 gross tons and over. – The kind of ice, derelict or danger observed.
– Ships carrying more than 12 passengers. – The position of the danger when last observed.
Compliance will be required according to the following – The time and date the observation was made.
schedule: The following information should be provided for
– 1 February 1992 - Voluntary compliance by any ships. hurricanes in the Atlantic and eastern Pacific, typhoons in
– All ships constructed after 1 February 1992 must carry a the western Pacific, cyclones in the Indian Ocean, and
radar transponder and two-way VHF radiotelephone for storms of a similar nature in other regions:
survival craft. – A statement that a cyclone has been encountered,
– 1 August 1993 - Applicable ships must have satellite transmitted whenever the Master has good reason to
EPIRB and NAVTEX. believe that a cyclone exists in his vicinity.
4 - 13
– Time, date, and position of ship when the observation – Particulars regarding the reporting vessel: name,
was taken. position, course, speed, destination, and estimated time
– As much of the following information as possible should of arrival.
be included in the message: – Particulars concerning the vessel or object reported:
– Barometric pressure. position, name, color, size, shape, and other descriptive
– Barometric tendency during the past 3 hours. data.
– True wind direction and force. – Particulars concerning the case: nature of the case,
– Sea state (smooth, moderate, rough, high). conditions, and action taken, if any.
– Swell (slight, moderate, heavy), with direction and MESSAGES ADDRESSED TO NGA (INFORMATION
period. CONCERNING OTHER THAN U.S. WATERS): Messages
– Course and speed of ship. describing dangers on the high seas or in foreign waters
When a Master has reported a dangerous cyclone, it is should be addressed to NGA NAVSAFETY BETHESDA
desirable that subsequent observations be made and MD, which may decide to issue a safety broadcast. Whenever
transmitted hourly, if possible, but in any case at intervals possible, messages should be transmitted via the nearest
of not more than 3 hours, so long as the ship remains under government radio station. If that is impractical, a commercial
the influence of the cyclone. radio station may be used. Navigational warning messages to
For winds of Force 10 or above on the Beaufort Scale for the U.S. government should always be sent through U.S. radio
which no storm warning has been received (storms other stations, government or commercial, but never through
than the cyclones referred to above) a message should be foreign stations.
sent containing similar information to that listed above but Although any coast station in the mobile service will
excluding details concerning sea and swell. handle without charge messages relative to dangers to
For sub-freezing air temperatures associated with gale navigation or defects in aids to navigation, it is requested
force winds, causing severe ice accretion on that, where practicable, ships address their messages to
superstructures, send a message including: NGA and send them through the nearest U.S. station. Ship
– Time and date. to shore Coast Guard radio stations are available for
– Air temperature. long-range communications. The AMVER Bulletin should
– Sea temperature. be consulted for the latest changes to the communications
– Wind direction and force. network.
Warning information may also be reported directly to the
400C. Reporting Navigational Safety Information NGA NAVSAFETY Radio Broadcast Watch Desk by the
to Shore Establishments following methods:
– Telephone: (1) 301-227-3147.
Masters should pass navigational safety information to – Fax: (1) 301-227-3731.
cognizant shore establishments by radio. This information – E-mail: navsafety@nga.mil.
may include, but is not limited to, the following:
– Ice. 400D. Assistance by SAR Aircraft and Helicopters
– Derelicts, mines, or other floating dangers.
– Casualties to lights, buoys, and other navigational aids. SAR aircraft may drop rescue equipment to ships in
– The newly discovered presence of wrecks, rocks, shoals, distress. This may include equipment containers connected
reefs, etc. in series by a buoyant line. The following may be dropped:
– Malfunction of radio navigational aids. – Individual life rafts or pairs linked by a buoyant line.
– Hostile action or potential hostile action which may – Buoyant radiobeacons and/or transceivers.
constitute a hazard to shipping. – Dye and smoke markers and flame floats.
MESSAGES ADDRESSED TO THE U.S. COAST – Parachute flares for illumination.
GUARD: In the waters of the United States and its – Salvage pumps.
possessions, defects noted in aids to navigation should be
addressed to COAST GUARD and transmitted direct to a A helicopter may be used to supply equipment and/or
U.S. government coast station for relay to the Commander evacuate persons. In such cases the following information
of the nearest Coast Guard District. will be of value:
Merchant ships should send messages about defects in – An orange smoke signal, signal lamp, or heliograph can
aids to navigation through commercial facilities only when be used to attract the attention of the helicopter.
they are unable to contact a government coast station. – A clear stretch of deck should be made available as a
Charges for these messages will be paid by the Coast pickup area, if possible, marked out with a large letter H
Guard. in white. During the night the ship should be illuminated
Vessels reporting distress, potential distress, groundings, as brightly as possible, particularly any obstructions
hazards to navigation, medicos, failures of navigational (masts, funnels, etc.). Care should be taken that
aids, etc. to the Coast Guard, should include the following illumination will not blind the helicopter pilot.
information in their initial report to expedite action and – The helicopter will approach from abaft the beam and
reduce the need for additional message traffic: come to a hover over the cleared area.
4 - 14
– The ship should, when possible, maintain a constant The text of a SHAR message should include the
speed through the water and keep the wind 30˚ on the acronym SHAR, the location or position of the incident, a
port bow. If these conditions are met, the helicopter can brief description of the situation, the Inmarsat identity of
hover and use its hoist in the cleared area. If a vessel is the ship transmitting the SHAR, the Inmarsat Ocean
on fire or making smoke it is an advantage to have the Region guarded, and the call sign of the coast radio station
wind 30˚ on the bow. The above procedure may be being guarded, if any. An example of the procedure vessels
modified on instructions from the pilot. can use to send a SHAR message to NGA via either
– An indication of wind direction is useful. Pennants, flags, Inmarsat-A or -B telex follows on pg. 4-16.
or a small amount of smoke from the galley funnel may If circumstances are such that only minimum essential
be helpful. data can be transmitted, a second SHAR message should
– The length of the helicopter’s winch cable is about 15 be sent as soon afterward as possible containing
meters (50 feet) minimum. amplifying information, such as:
– The lifting device on the end of the winch cable should – Latitude, longitude, course, and speed.
never be secured to any part of the ship or become – Bearing and distance from nearest geographic point.
entangled in the rigging or fixtures. Ships’ personnel – Description of event.
should not attempt to grasp the lifting device unless – Next port of call and ETA.
requested to do so by the helicopter. In this case, a metal – Date and time last message sent regarding this incident.
part of the lifting device should first be allowed to touch SHAR messages can be transmitted to NGA via
the deck in order to avoid possible shock due to static Inmarsat-A, -B, or -C telex:
electricity. NGA NAVSAFETY BETHESDA MD
– If the above conditions cannot be met, the helicopter may TELEX 898334
be able to lift a person from a boat or life raft secured on SHAR delivery may also be made by the following
a long painter. Cases have occurred of life rafts being methods:
overturned by the downdraft from a helicopter. It is – NBDP via telex.
advisable for all persons in a raft to remain in the center – Telephone: (1) 301-227-3147.
of the raft until they are about to be lifted. – E-mail: navsafety@nga.mil.
– In cases of injured persons a special stretcher may be Rapid dissemination of a SHAR is vital so that a radio
lowered by the helicopter. The stretcher should be broadcast warning, if needed, may be promulgated as soon
unhooked while the casualty is being strapped in. as possible. When a SHAR is received by NGA, it is
reviewed and (if appropriate) immediately sent to the
400E. Reports of Hostile Activities Department of State and other relevant government
authorities and officials for action. A SHAR can result in
SHIP HOSTILE ACTION REPORT (SHAR): NGA has the promulgation of NAVAREAs, HYDROLANTs,
established SHAR procedures to disseminate information HYDROPACs, and SPECIAL WARNINGS (See chap. 3.)
within the U.S. Government on hostile or potentially to help ensure the safety of any other U.S. flag vessels in
hostile actions against U.S. merchant ships. Shipmasters the affected area.
should send a SHAR message to NGA by whatever means A SHAR is not a distress message. U.S. flag and
available immediately after they have encountered hostile effective U.S. controlled (EUSC) vessels, under attack or
actions or become aware of potential hostile actions which threat of attack, may request direct assistance from the
may constitute danger to U.S. shipping. U.S. Navy following the procedures in Part II of this
chapter.
4 - 15
Procedure to Send a SHAR via Inmarsat-A or Inmarsat-B Telex
IDB A INMARSAT 12/JLY/99 21:30:46 Land Earth Station and Date-Time Group
1514205 MMAA X Answer back identifying vessel

GA+ Go ahead from Land Earth Station
0023898334+
NGA USA Answer back from NGA “00” Auto service code for Inmarsat
“23” Telex country code for the United States
“898334” NGA’s telex number
“+” Completes dialing string
FM M/V HYDRO
TO NGA NAVSAFETY
BETHESDA MD
TELEX 898334
SHAR SHAR SHAR
AMERICAN FREIGHTER OBSERVED HIT BY SEVERAL ROCKETS FIRED

Text
FROM UNKNOWN LAND BASED SOURCE WHILE TRANSITTING
NORTH MITSIEWA CHANNEL.
INCIDENT OCCURRED AT 132300Z NOV 99 IN POSITION 16-24N 039-13E.
GUARDING COASTAL STATION JEDDAH/HZH AND AOR-EAST SATELLITE,

INMARSAT ID 1514205.
CAPTAIN SMITH
NGA USA Answer back from NGA
1514205 MMAA X Answer back from vessel
..... Sequence of five periods terminating the transmission
IDB A ILXACD SN4252

CALL 0023898334 Summary of call
2 MINS 6 SECS
4 - 16
PIRACY ATTACK ALERT: The international format for shipping continue to be a worldwide problem. Information
a piracy attack alert includes the following: regarding these incidents often takes over a month to reach
– The distressed vessel’s name and call sign (and Inmarsat U.S. Government authorities. Delays in reporting these
ID, if applicable, with ocean region code). incidents can result in an ineffective response by the
– Distress signal MAYDAY or SOS (MAYDAY need not appropriate Government agency and, more importantly,
be included in the Inmarsat system when distress priority will undermine the benefit to other mariners who may be
(3) is used). transiting the affected geographic area.
– The text heading PIRACY ALERT. At the request of a U.S. Government interagency
– Position and time. working group on piracy and maritime terrorism, the
– Nature of event. Defense Mapping Agency (DMA) [now the National
This message should be sent to the nearest RCC, Geospatial-Intelligence Agency (NGA)] developed, in
national or regional piracy center, or nearest coast radio 1985, a system to offer the maritime community the most
station. effective means of filing reports about attacks on shipping,
A follow-up message should be sent when time permits, storing the data on a computer and disseminating data to
including the following: mariners and Government entities via telecommunications
– Reference to the initial Piracy Alert. links.
– Details of the incident. The NGA system is the Anti-Shipping Activity
– Last observed movements of the pirate vessel. Messages (ASAM) database accessed through the
– Assistance required. Maritime Safety Information Website. This system allows
– Preferred methods for future communication. any user to send and record an ASAM or query the
– Date and time of report. database for reported incidents by date, geographic
A regional Piracy Reporting Center in Kuala Lumpur, subregion, victim’s name or reference number.
Malaysia, has been established by the International All piracy, terrorism, attacks, hostile actions,
Maritime Bureau (IMB) in the Southeast Asia Region. The harassments and threats while at sea, anchor or in port,
center maintains watch 24-hours a day and, in close should be reported. The primary means of reporting is
collaboration with law enforcement, acts on reports of through NGA’s ASAM system, with acceptable secondary
suspicious shipping movements, piracy, and armed robbery methods by telex/fax, telephone, and mail. An ASAM does
at sea anywhere in the world. Services are provided free of not need to be filed if a Ship Hostile Action Report
charge to all vessels irrespective of ownership or flag. (SHAR) has been issued-one will be generated following a
Specific tasks of the Piracy Reporting Center are to: SHAR.
– Report piracy incidents and armed robbery at sea to law This centralized database capability has been designed
enforcement agencies. to be a major step toward monitoring the escalating
– Supply investigating teams that respond to acts of piracy problem of maritime crimes against life and property. The
and collect evidence for law enforcement agencies. central location for filing reports of attacks against
– Locate vessels that have been seized by pirates and shipping is the first step in supporting governmental
recover stolen cargoes. responses, as well as warning the maritime community that
– Help bring pirates to justice. they should avoid (or approach with caution) certain
– Assist owners and crews of ships that have been geographic areas.
attacked. Many ASAM reports are filed each year; however, the
– Collate information on piracy in all parts of the world. number of reports as compared to worldwide incidents is
The center broadcasts daily status bulletins by quite low. The long range goal of the ASAM system is to
Inmarsat-C (SafetyNET), reporting acts of piracy against assist Government officials in the deterrence of such
shipping in East Africa, the Indian subcontinent, Southeast activities. Active participation by mariners is vital to the
Asia and the Far East regions. success of future deterrence. The U.S. Maritime
The IMB also publishes a weekly piracy report, which is Administration (MARAD) and NGA strongly encourage
a summary of the Piracy Reporting Center’s daily status all mariners to participate and promptly report all
bulletins. Each week’s report is posted on Tuesday and incidents, whether against their vessel or observed against
may be accessed through the IMB Website at: other vessels.
http://www.iccwbo.org/ccs/menu_imb_bureau.asp For further information pertaining to the ASAM system
contact:
The center may be contacted by:
– Telephone: 60-3-2078-5763. MARITIME DIVISION
– Fax: 60-3-2078-5769. NSS STAFF
– Telex: MA 31880 IMBPCI. ST D 44
– E-mail: imbkl@icc-ccs.org.uk. 4600 SANGAMORE ROAD
24 hour Anti Piracy Helpline: BETHESDA MD 20816-5003
– Telephone: 60-3-2031-0014.
Telephone: (1) 301-227-3147.
ANTI-SHIPPING ACTIVITY MESSAGES (ASAM) Fax: (1) 301-227-4211.
REPORTING: Piracy and other attacks against merchant E-mail: webmaster_nss@nga.mil.
4 - 17
ANTI-PIRACY MEASURES: Merchant ships continue – CONTINUE TO MAINTAIN GOOD ALL-AROUND

to be attacked by pirates in port and underway on the west WATCH.
coast of Africa, in and near the Strait of Malacca, in the After pirates have boarded:
South and East China Seas, in the Caribbean and in – Barricade engine room and bridge, if practicable.
Brazilian and Ecuadorian waters. Pirates usually take – Barricade the crew in secure areas, if practicable.
money, radios, cameras and other property that is portable, – Report the situation by radio and call for help, if
valuable and easily sold. In some cases cargo has been available. Use Emergency Call-up Procedures in
raided. In this section “piracy” means all kinds of violent Chapter 4.
crimes against ships and small craft, including incidents in – DON’T BE HEROIC if the boarders are armed.
ports and in territorial and international waters, except MARAD ADVISORIES: The U.S. Maritime
incidents that are clearly political terrorism. Administration utilizes MARAD Advisories to rapidly
The following is a short checklist of prudent measures disseminate information on maritime danger, safety,
that ship’s officers should consider when operating in government policy, and other timely matters pertaining to
regions where piracy has been reported: U.S. flag and U.S. owned vessel operations. MARAD
– BE VIGILANT. ANTICIPATE TROUBLE Advisories are issued by the Office of Ship Operations to
– Provide a security general alarm signal and security vessel Masters, operators, and other U.S. maritime
Station Bill to alert all crew members. Assign a ship’s interests via message. MARAD Advisories are also
physical security officer. published in NGA’s Notice to Mariners and maintained on
– Anti-piracy measures should be included in the ship’s NGA’s Maritime Safety Information Center Website.
security plan. These measures should be designed to MARAD has established an internet Website at:
keep boarders off the ship. Repelling armed pirates http://www.marad.dot.gov
already on deck can be dangerous. to disseminate the latest information pertaining to the U.S.
– Piracy countermeasures should be exercised during maritime industry. The following information is available:
regular emergency drills when in or approaching
dangerous waters. – Ready Reserve Force news.
– Have water hoses under pressure with nozzles ready at – Treasury Department’s Office of Foreign Assets Control.
likely boarding places when at sea and in port. – Maritime Security Act/Program.
– Illuminate sides, bows and quarters while navigating in – MARAD Advisories.
threat areas and in dangerous ports. – Maritime Security Reports.
– Restrict access to vessel, close all ports, strong back – Current maritime related legislation.
doors, and secure spaces. – Current press releases.
In port: – Cargo preference.
– Ensure gangway watch can contact shipboard support if – International and domestic marketing.
needed, preferably by hand-held radios. – Calendars of trade events.
– Ensure gangway watch can contact local security forces – General public sales information.
for assistance, if available.
– Maintain roving patrol on deck in port and at anchor, and For further information regarding MARAD Advisories
ensure that patrol and gangway watch are in contact. contact:
– Use rat guards on all mooring lines and illuminate the
lines. MARITIME ADMINISTRATION
– Use covers on chain hawse and keep wash-down water OFFICE OF SHIP OPERATIONS (MAR-613)
running. 400 SEVENTH STREET SW
– Keep bumboats away and vendors off the ship. WASHINGTON DC 20590
Underway:
– Keep good radar and visual lookout, including lookout Telephone: (1) 202-366-5735.
aft. Fax: (1) 202-366-3954.
– Have searchlights available to illuminate suspected E-mail: opcenter1@marad.dot.gov.
boarding parties.
– Have signaling equipment, including emergency rockets, 400F. Emergency Position Indicating Radio
rocket pistols, and EPIRBs, available for immediate use. Beacons (EPIRBs)
When suspected boarders are detected:
– Sound the general alarm. Emergency position indicating radio beacons (EPIRBs),
– Establish VHF contact with shore stations and other devices which cost from $200 to $1500, are designed to
ships in the vicinity. save lives by alerting rescue authorities and indicating
– Increase speed and head into seas if practicable. Take distress location. EPIRB types are described as follows:
evasive action by working rudder hard right and left if – Class A (121.5/243 MHz): Float-free, automatically
navigation permits. activating, detectable by aircraft and satellite. Coverage
– Fire warning rockets. limited (see chart). An alert from this device to a RCC
– Switch on outside lighting. may be delayed 4-6 or more hours. No longer
– Use searchlights to illuminate and dazzle suspects. recommended.
4 - 18
– Class B (121.5/243 MHz): Manually activated version of two agencies of the United Nations are responsible for
Class A. No longer recommended. regulating the safety of ships and aircraft on international
– Class S (121.5/243 MHz): Similar to Class B, except that transits and handle international standards and plans for
it floats, or is an integral part of a survival craft. No maritime and aeronautical search and rescue. In addition,
longer recommended. problems within this frequency band inundate search and
– Category I (406/121.5 MHz): Float-free, automatically rescue authorities with false alerts, adversely impacting the
activated EPIRB. Detectable by satellite anywhere in the effectiveness of lifesaving services. Although 406 MHz
world. Recognized by GMDSS. beacons are more costly, they provide search and rescue
– Category II (406/121.5 MHz): Similar to Category I, agencies with more reliable and complete information to
except manually activated. Some models are also water do their job more efficiently and effectively.
activated. Individuals who plan on buying a new distress beacon
– Inmarsat-E (1646 MHz): Float-free, automatically need to be aware and take the Cospas-Sarsat decision into
activated EPIRB. Detectable by Inmarsat geostationary account.
satellite. Recognized by GMDSS. 406 MHz EPIRBs (Category I, II): The 406 MHz EPIRB
121.5/243 MHz EPIRBs (Class A, B, S): These are the was designed to operate with satellites. The signal
most common and least expensive type of EPIRB, frequency, 406 MHz, has been designated internationally
designed to be detected by overflying commercial or for use only for distress; other communications and
military aircraft. Satellites were designed to detect these interference are not allowed on this frequency. Its signal
EPIRBs but are limited for the following reasons: allows a satellite local user terminal (LUT) to accurately
– Satellite detection range is limited for these EPIRBs locate the EPIRB (much more accurately than 121.5/243
(satellites must be within line of sight of both the EPIRB MHz devices) and identify the vessel (by matching the
and a ground terminal for detection to occur) (see chart). unique identification code transmitted by the beacon to a
– Frequency congestion in the band used by these devices registration database) anywhere in the world (there is no
cause a high satellite false alert rate (99.8%); range limitation). These devices are detectable not only by
consequently, confirmation is required before SAR Cospas-Sarsat satellites which are polar orbiting, but also
forces can be deployed. by geostationary GOES weather satellites. EPIRBs
– EPIRBs manufactured before October 1989 may have detected by the GEOSAR system, consisting of GOES or
design or construction problems (i.e., some models will other geostationary satellites, provide rescue authorities an
leak and cease operating when immersed in water) or instant alert, but without location information unless the
may not be detectable by satellite. Such EPIRBs may no EPIRB is equipped with an integral GPS receiver. EPIRBs
longer be sold. detected by Cospas-Sarsat (i.e., TIROS N) satellites
– Location ambiguities and frequency congestion in this provide rescue authorities location of distress, but location
band require two or more satellite passes to determine if and sometimes alerting may be delayed as much as an hour
the signal is from an EPIRB and to determine the or two. These EPIRBs also include a 121.5 MHz homing
location of the EPIRB, delaying rescue by an average of signal, allowing aircraft and rescue craft to quickly find the
4 to 6 hours. In some cases, a rescue can be delayed as vessel in distress. These are the only type of EPIRBs which
long as 12 hours. must be certified by Coast Guard approved independent
– Cospas-Sarsat is expected to cease detecting alerts on laboratories before they can be sold in the United States.
121.5 MHz. An automatically activated, float free version of this
Class A, B, and S (121.5 MHz) EPIRBs have not been EPIRB is designated for use in the GMDSS and has been
manufactured, imported, or sold in the U.S. since 1 required on SOLAS vessels (cargo ships over 300 tons and
February 2003; use of these EPIRBs in the U. S. shall be passenger ships on international voyages) since 1 August
prohibited after 31 December 2006. 1993. Coast Guard regulations require U.S. commercial
NOTE: The International Cospas-Sarsat Program has fishing vessels to carry this device. The U.S. Coast Guard
announced plans to terminate satellite processing of Navigation and Vessel Inspection Circular (NVIC) No.
distress signals from 121.5/243 MHz emergency beacons 3-99 provides a complete summary of EPIRB equipment
on 1 February 2009. Mariners, aviators and other users of requirements for U.S. flag vessels, including those vessels
emergency beacons will need to switch to those operating operating on the Great Lakes. This circular is available
at 406 MHz in order to be detected by satellites. The from the U.S. Coast Guard Homepage at:
termination of 121.5/243 MHz processing is planned far http://www.uscg.mil/hq/g-m/nvic/
enough in advance to allow users adequate time for the A new type of 406 MHz EPIRB, having an integral GPS
transition to the 406 MHz beacon. navigation receiver, became available in 1998. This EPIRB
The decision to terminate 121.5/243MHz satellite provides accurate location, as well as identification
alerting services was made in response to guidance from information, to rescue authorities immediately upon
the International Maritime Organization (IMO) and the activation through both geostationary (GEOSAR) and
International Civil Aviation Organization (ICAO). These polar orbiting satellites.
4 - 19
COMPARISON OF THE 406 MHz AND 121.5 MHz DISTRESS BEACONS
406 MHz Beacons 121.5 MHz Beacons

Coverage:
–Global. –Ground station dependent; ground stations have an
effective radius of about 1800 nm (2300 km). Both ground
station and beacon must be in satellite footprint. Current
coverage is about two-thirds of the world.
False Alerts:
–All alerts come from beacons. Satellite beacon –Only about 1 in 5 alerts come from beacons. Satellites
transmissions are digital, coded signals. Satellites process can’t discern beacon signals from many non-beacon
only encoded data, other signals are rejected. sources. Beacons transmit anonymously with no unique
identifier.
–About 1 in 12 alerts are actual distress. –Fewer than 2 in 1000 alerts and 2 in 100 composite alerts
are actual distress.
–Beacon-unique coding/registration allows rapid incident –Since 121.5 MHz beacons transmit anonymously, the
corroboration. Registration mandatory since 1994. 90% only way to ascertain the situation is to dispatch resources
beacons registered. About 70% of false alerts are resolved to investigate--a costly disadvantage.
by a phone or radio call to registration POCs prior to
launching SAR assets.
Alerting:
–First alert warrants launch of SAR assets. Earlier –High false alert rate makes first-alert launch unfeasible.
launches puts assets on scene sooner--average 3 hrs saved Absent independent distress information means RCCs
in maritime, 6 hrs in inland. must wait for additional alert information.
–Average initial detection/alerting by orbiting satellites is –Same as 406 MHz.
about 45 minutes.
–Average subsequent satellite passes every 60 minutes. –Same as 406 MHz.
–Vessel/aircraft ID, point of contact information provided –Alerts are anonymous. 121.5 MHz analog technology not
with alerts allows rapid verification or stand-down. capable of transmitting data.
–Allows false alert follow-up to continuously improve –No false alert follow-up capability.
system integrity/reliability.
–Near instantaneous detection by geostationary satellites. –No GEO detection capability means no instantaneous
System provides world-wide coverage. detection.
Position Information:
–1-3 nm (2-5 km) accuracy on average. Position –12-15 nm (15-25 km) accuracy on average. Position
calculated by Doppler shift analysis. calculated by Doppler shift analysis.
–Less than 100 yard accuracy with GPS-equipped –No GPS capability.
beacons. GPS position processed with initial alert. Major
beacon enhancement.
Locating the Target:
–Superior alert (non-GPS) position accuracy limits initial –Initial position uncertainty results in 500 sq. nm (800 sq.
search area to about 25 sq. nm (65 sq. km). km) search area on average.
–GPS-equipped beacons reduce search area to a –No GPS capability.
significantly smaller area.
–121.5 MHz homing signal facilitates target location by –Same as 406 MHz.
radio detection finder equipped search units.
Power Output:
–5.0 Watts (strong power output). –0.1 Watt (weaker power output)--hard for satellites to
detect.
Cost:
–Average cost is $1000 (GPS-equipped EPIRB). –Average cost is $200 - $400 (EPIRB).
–Average cost is $500 (Personal Locator Beacon. –Average cost is $600 - $1200 (ELT).
–Average cost is $1500 - $3000 (ELT). –121.5 MHz beacons are being phased out.
4 - 20
Mariners should be aware of the differences between persons for hire regardless of tonnage) mandatory testing
capabilities of 121.5/243 MHz and 406/121.5 MHz of a vessel’s 406 MHz EPIRB is required on a monthly
EPIRBs, as they have implications for alerting and locating basis.
of distress sites, as well as response by SAR forces. The The following information has been developed by
advantages of 406/121.5 MHz devices are substantial, and NOAA and the U.S. Coast Guard to provide EPIRB
are further enhanced by EPIRB-transmitted registration owners and maintainers a generic list of recommended
data on the carrying vessel. Owners of 406/121.5 MHz procedures for conducting monthly EPIRB inspections.
EPIRBs furnish registration information on their vessel, These inspection procedures are intended to provide
onboard survival gear, and emergency points of contact general guidance and do not supersede the recommended
ashore, all of which greatly enhance both timely and procedures provided by the International Maritime
tailored SAR response. The database for U.S. vessels is Organization (IMO) or by the EPIRB manufacturer. All
maintained by the National Oceanic and Atmospheric owners and maintainers should follow the inspection and
Administration (NOAA), and is accessed worldwide by self-testing procedures of their EPIRB manufacturer
SAR authorities to facilitate SAR response. accordingly. Throughout the inspection and testing
BEACON REGISTRATION: FCC regulations require process, great care must be taken to avoid the transmission
that all 406 MHz EPIRBs carried on U.S. vessels be of a false distress alert.
registered with NOAA. The U.S. Coast Guard is enforcing – Inspection of the EPIRB housing: The first test of an
the FCC registration rule. FCC fines, of up to $10,000, may EPIRB should be to inspect the unit housing the EPIRB.
be incurred for false activation of an unregistered EPIRB 406 MHz EPIRBs should be fitted in an unobstructed
(e.g., as a hoax, or through gross negligence, carelessness, “float free” mounting and positioned away from any
or improper storage and handling). The EPIRB must be overhead obstructions to reduce the risk of the EPIRB
updated with NOAA upon the change of vessel or EPIRB becoming trapped when released. In such a mounting the
ownership, transfer of EPIRB to another vessel, or any EPIRB should be held in place by a Hydrostatic Release
other change in registration information, such as the Unit (HRU), an Automatic Release Mechanism (ARM),
owner’s address or primary telephone number. or a manual release bracket. In the case of the HRU, it is
NOAA’s National Beacon Registration Database is now designed to sense the increasing water pressure if a
available online. EPIRB owners can register and update vessel sinks and at a predetermined depth (usually 3-5
their beacons directly via the internet at: meters) the HRU releases the mount, allowing the
http://www.beaconregistration.noaa.gov/ EPIRB to float to the surface. If the EPIRB is a Category
Owner’s of previously registered EPIRBs can access I beacon, the mounting unit will allow the EPIRB to
registration information with the unique beacon ID (i.e., 15 switch itself on as it is released, so it will operate
character hexadecimal Beacon Identification Code). automatically if the vessel sinks. Category II EPIRBs
Registration forms and inquiries may also be obtained differ in that they are not released automatically via the
from: HRU; they activate manually or through immersion in
water.
NOAA SARSAT – Expiration date: If the EPIRB is retained in its mount or
E/SP3, RM 3320, FB-4 casing by an HRU, then the expiration date or service
5200 AUTH ROAD date label on the HRU should be noted and clearly
SUITLAND MD 20746-4304 visible. These units must be replaced every 2 years
including any associated plastic bolts, rods, springs,
– Telephone: (1) 888-212-SAVE (toll free), (1) 301- and/or spacing washers. The HRU should be free of any
457-5678, or (1) 301-457-5430. signs of corrosion, cracking, water ingress, etc. Any
– Fax: (1) 301-568-8649. damage should be repaired in accordance with the
– E-mail: osdpd.dsd.reception@noaa.gov. manufacturer’s procedures, or the unit replaced.
– EPIRB lanyard: Presence of a firmly attached lanyard in
TESTING 121.5/243 MHz EPIRBs: The U.S. Coast good condition should also be verified. The lanyard
Guard urges EPIRB owners to periodically check for water should be neatly stowed, and must not be tied to the
tightness, battery expiration date, and signal presence. vessel or the mounting bracket.
FCC rules allow Class A, B, and S EPIRBs to be turned on – Checking for physical damage: The EPIRB should be
briefly (for three audio sweeps, or 1 second only) during examined thoroughly for any physical damage. If there
the first 5 minutes of any hour. Signal presence can be appears to be any damage, corrosion, cracking, water
detected by an FM radio tuned to 99.5 MHz, or an AM ingress, etc., the EPIRB should be replaced with a
radio tuned to any vacant frequency and located close to an backup immediately. In turn, this replacement EPIRB
EPIRB. should meet each of the inspection and testing criteria
MONTHLY EPIRB INSPECTION PROCEDURES: For listed here as well.
all compulsory vessels that are required to carry 406 MHz – Proper registration: An inspection of the EPIRB
EPIRBs in U.S. waters (that is, all vessels over 300 gross registration decal from NOAA should also be completed
tons, all commercial fishing vessels regardless of tonnage for all U.S.A.-coded EPIRBs. The registration decal
operating in waters greater than 3 nautical miles offshore, should be properly placed on the EPIRB and clearly
and all inspected vessels engaged in transporting 6 or more visible for U.S. Coast Guard inspectors. If there appears
4 - 21
to be any damage to the decal, NOAA should be notified measurements required in these guidelines. All checks of
immediately. U.S. law requires that all 406 MHz EPIRBs electrical parameters should be performed in the self-test
must be properly registered with NOAA. Every two mode, if possible.
years NOAA will seek an update of the registration The examination of the installed 406 MHz satellite
information to ensure accuracy. However, if at anytime EPIRB should include:
the registration information does change (such as a new – checking position and mounting for float-free operation;
phone number, new address, new emergency contact, – verifying the presence of a firmly attached lanyard in
etc.) NOAA must be informed immediately. good condition; the lanyard should be neatly stowed, and
– EPIRB battery: The expiration date of the EPIRB’s must not be tied to the vessel or the mounting bracket;
battery should also be inspected. This is usually given on – carrying out visual inspection for defects;
the EPIRB manufacturer’s label or on another plate – carrying out the self-test routine;
affixed to the EPIRB. Battery life for most EPIRBs is 5 – checking that the EPIRB identification (15 Hex ID and
years. The battery must be replaced on or before the other required information) is clearly marked on the
expiration date or if the EPIRB has been used in an outside of the equipment;
emergency regardless of the length of time. EPIRB – decoding the EPIRB 15 Hexadecimal Identification
batteries are designed to operate the beacon for a Digits (15 Hex ID) and other information from the
minimum of 48 hours and therefore must always be fully transmitted signal, checking that the decoded
charged. information (15 Hex ID or MMSI/callsign data, as
– Self-testing: After the EPIRB has been properly required) is identical to the identification marked on the
inspected, a self-test of the EPIRB can be conducted beacon;
following the instructions provided by the EPIRB – checking registration through documentation or through
manufacturer. It is important that the manufacturer’s the point of contact associated with that country code;
instructions be followed to ensure that the EPIRB is – checking the battery expiration date;
working properly and to avoid an accidental activation. – checking the hydrostatic release and its expiration date,
Most EPIRBs have a visible test switch that is usually as appropriate;
spring loaded so it cannot be left on inadvertently and – checking the emission in the 406 MHz band using the
thus reduce the life of the battery. A light will indicate self-test mode or an appropriate device to avoid
that the test circuits are operating correctly. Sometimes transmission of a distress call to the satellites;
this light will also activate the strobe light. It is – if possible, checking emission on the 121.5 MHz
recommended that the self-test switch be held for no frequency using the self-test mode or an appropriate
more than 2 flashes of the strobe light or no longer than 1 device to avoid activating the satellite system;
minute after the first self-test mode burst transmission. – checking that the EPIRB has been maintained by an
When operating a 406 MHz EPIRB self-test, the EPIRB approved shore-based maintenance provider at intervals
is allowed to radiate a single burst which is specially required (i.e., not exceeding 12 months, see 47 CFR
coded so that it is ignored by the Cospas-Sarsat system. 80.1105(k));
The EPIRB must never be tested by actual operation. If it – after the test, remounting the EPIRB in its bracket,
is accidentally activated in the transmit mode, then it checking that no transmission has been started; and
should be turned off at once and the false alert cancelled – verifying the presence of beacon operating instructions.
by calling the nearest U.S. Coast Guard Station and have
them contact the nearest Rescue Coordination Center. INMARSAT-E EPIRBs: Inmarsat-E EPIRBs operate on
– Log-keeping: For compulsory vessels all EPIRB tests 1.6 GHz (L-band) and transmit a distress signal to Inmarsat
must be logged. Usually this is recorded in the GMDSS geostationary satellites, which includes a registered
Station Log which requires compulsory vessels to identity similar to that of the 406 MHz EPIRB, and a
conduct and record tests of the vessel’s GMDSS system location derived from a GPS navigational satellite receiver
on a routine basis. The GMDSS Station Log is required inside the EPIRB. Inmarsat-E EPIRBs may be detected
under 47 CFR 80.409. anywhere in the world between 70˚N and 70˚S. Since
When used in an emergency, some EPIRBs must be geostationary satellites are used, alerts are transmitted
floating in the water for their antenna to operate at peak almost instantly to a RCC associated with the Inmarsat
efficiency. The EPIRB manufacturer’s instructions will Land Earth Station (LES) receiving the alert. The distress
indicate if the EPIRB should be operating afloat or if it can alert transmitted by an Inmarsat-E EPIRB is received by
be kept inside the liferaft. In either event, once the EPIRB two LESs in each ocean region, giving 100 percent
is activated in a distress situation leave it switched on until duplication for each ocean region in case of failures or
you have been rescued or until the batteries are exhausted. outages associated with any of the LESs. Alerts received
ANNUAL TESTING OF EPIRBs: The annual testing of over the Inmarsat Atlantic Ocean Regions are routed to the
406 MHz satellite EPIRBs is required by SOLAS Coast Guard Atlantic Area command center in Portsmouth,
regulation IV/15.9. The IMO has issued MSC/Circ.1040 and alerts received over the Inmarsat Pacific Ocean Region
(dated 28 May 2002) which provides the following are routed to the Coast Guard Pacific Area command
guidelines on annual testing of 406 MHz satellite EPIRBs: center in Alameda. This type of EPIRB is designated for
The testing should be carried out using suitable test use in the GMDSS, but it is not sold in the United States or
equipment capable of performing all the relevant approved for use by U.S. flag vessels.
4 - 22
NOTE: Inmarsat will withdraw its L-band EPIRB not continuous because polar orbiting satellites can only
service (Inmarsat-E) on 1 December 2006. view a portion of the earth at any given time. However, the
THE COSPAS-SARSAT SYSTEM: Cospas-Sarsat satellite is able to store distress beacon information and
(Cospas is a Russian acronym for “Space System for continuosly broadcast it until the satellite comes within
Search of Distress Vessels;” Sarsat signifies “Search and view of a LEOLUT, thereby providing global coverage.
Rescue Satellite-Aided Tracking”) is an international Doppler processing techniques are used to calculate the
satellite-based search and rescue system established by the position of the beacon. In the case of second generation
U.S., Russia, Canada, and France to detect and locate 406 MHz beacons, the location information is acquired
emergency radiobeacons transmitting on the frequencies from global satellite navigation systems, through an
121.5 and 406 MHz. Since its inception, the Cospas-Sarsat internal or external navigation receiver, and encoded in the
system has contributed to the saving of over 15,700 lives in beacon message.
approximately 4,500 SAR events. The 121.5 MHz LEOSAR System coverage is neither
The Cospas-Sarsat system provides distress and location global nor continuous because the detection of the distress
data to RCCs for 121.5 MHz beacons, within the coverage signal can only occur when the satellite simultaneously
area of Cospas-Sarsat ground stations (Local User views the transmitting beacon and the ground receiving
Terminals - LUTs), and for 406 MHz beacons, activated station. Doppler processing techniques are used to
anywhere in the world. The system is composed of: calculate the position of the beacon; however, the location
– distress radiobeacons (EPIRBs for maritime use) which accuracy of 121.5 MHz beacons is not as good as the
transmit signals during distress situations; accuracy achieved with 406 MHz beacons because of the
– instruments on board satellites in geostationary and relatively poorer frequency stability performance of these
low-altitude Earth orbits which detect the signals older generation beacons. Furthermore, a second satellite
transmitted by distress radiobeacons; pass is normally required to resolve postion ambiguity.
– ground receiving stations, referred to as Local User The 406 MHz GEOSAR System provides continuous
Terminals (LUTs), which receive and process the coverage of all areas of the globe to about 75 °latitude.
satellite downlink signal to generate distress alerts; and This system provides almost immediate alerting in the
– Mission Control Centers (MCCs) which receive alerts footprint of the GEOSAR satellite, however it has no
produced by LUTs and forward them to RCCs, SAR independent location capability. To provide rescuers with
Points of Contacts (SPOCs), or other MCCs. position information, the beacon location must be either:
The Cospas-Sarsat system includes two types of – acquired by the beacon through an internal or an external
satellites: navigation receiver and encoded in the beacon message;
– polar orbiting, or low-altitude Earth orbit (LEO), or
satellites which form the LEOSAR System; – derived, with possible delays, from the LEOSAR system
– geostationary Earth orbit (GEO) satellites which form Doppler processing.
the GEOSAR System.
The 406 MHz LEOSAR System provides global The USCG receives data from international sources via
non-continuous coverage using a limited number of polar the USMCC. See the following table:
orbiting satellites and 406 MHz beacons. The coverage is
LIST OF COSPAS-SARSAT MCCs AND LEOLUTs

(Extracted from ANNEX 10 of the IMO GMDSS Master Plan)
MCC LEOLUT
Country Location Designator Status Location Status Associated RCC
Algeria Algiers ALMCC Operational Ouargla Operational RCC Algiers
Argentina Ezeiza ARMCC Operational Parana Operational MRCC Puerto Belgrano

Rio Grande
Australia Canberra AUMCC Operational Albany Operational RCC Australia

Bundaberg
Brazil Brasilia BRMCC Operational Brasilia Under Salvamar/Salvaero

Manaus development
Recife
Canada Trenton CMCC Operational Churchill Operational

Edmonton
Goose Bay
4 - 23

MCC LEOLUT
Chile Santiago CHMCC Operational Easter Island Operational MRCC Chile

Punta Arenas
Santiago
China Beijing CNMCC Operational Beijing Operational
France Toulouse FMCC Operational Toulouse Operational MRCC Gris Nez

MRCC La Garde
Hong Kong Hong Kong HKMCC Operational Hong Kong Operational MRCC Hong Kong
India Bangalore INMCC Operational Bangalore Operational

Lucknow
Indonesia Jakarta IDMCC Operational Jakarta Operational RCC I; Soekarta-Hatta

Airport, Jakarta
RCC II; Djuanda
Airport, Suraybaya
RCC III; Hasanudin
Airport, Ujung Pandang
RCC IV; Frans Karseifo
Airport, Biak
Italy Bari ITMCC Operational Bari Operational MRCC Roma
ITDC1 Taipei TAMCC Operational Chi-lung Operational

(Keelung)
Japan Tokyo JAMCC Operational Yokohama Operational RCC Otaru

RCC Shiogama
RCC Yokohama
RCC Nagoya
RCC Kobe
RCC Hiroshima
RCC Kitakyushu
RCC Maizuru
RCC Niigata
RCC Kagoshima
RCC Naha
Republic of Taejon KOMCC Operational Taejon Operational RCC Inchon

Korea RCC Kimpo
New Canberra2 AUMCC Operational Wellington Operational RCC Lower Hutt

Zealand
Nigeria Abuja NIMCC Under Abuja Under
development development
Norway Bodø NMCC Operational Tromso Operational MRCC Bodø

Spitzbergen MRCC Stavanger
Pakistan Lahore PAMCC Under Lahore Operational CAA Lahore

development MSA Karachi
4 - 24

MCC LEOLUT
Peru Callao PEMCC Operational Callao Operational MRCC Callao
Russian Moscow CMC Operational Arkhangelsk Operational

Federation
Moscow3 Not
operational
Nakhodka Operational
Saudi Jiddah SAMCC Operational Jiddah Operational RCC Jiddah

Arabia
Singapore Singapore SIMCC Operational Singapore Operational Singapore Port

Operations Control
Center
South Cape Town ASMCC Operational Cape Town Operational

Africa
Spain Maspalomas SPMCC Operational Maspalomas Operational RCC Madrid

RCC Baleares
RCC Canarias
Thailand Bangkok THMCC Operational Bangkok Under RCC Bangkok

development
United Kinloss UKMCC Operational Combe Martin Operational MRCC Falmouth

Kingdom ARCC Kinloss
United Suitland USMCC Operational Alaska Operational RCC Boston

States California RCC Norfolk
Guam RCC Miami
Hawaii RCC New Orleans
Puerto Rico RSC San Juan
Texas RCC Cleveland
RCC Seattle
RCC Honolulu
RSC Guam
RCC Juneau
RCC Alameda
Langley AFB, VA
Ft Richardson, AK
Vietnam VNMCC Haiphong Under Haiphong Under MRCC Vietnam

development development
Notes:
1 The International Telecommunication Development Corporation.
2 The NZ LUT is directly connected to the Australian MCC (AUMCC).
3 Out of operation from 15 October 2001 due to relocation.
4 - 25
LIST OF COSPAS-SARSAT GEOLUTs

GEOLUT
Country Location Status
Argentina Ezeiza In operation, commissioned
Brazil Brasilia In operation, commissioned

Recife In operation, commissioned
Canada Trenton (1) In operation, commissioned

Trenton (2) In operation, commissioned
Chile Santiago In operation, commissioned
France Toulouse In operation1

India Bangalore In operation1
New Zealand Wellington (1) In operation, commissioned

Wellington (2) Under development
Spain Maspalomas (1) In operation, commissioned

Maspalomas (2) Under development
United Kingdom Combe Martin In operation, commissioned
Notes:
1GEOLUTs have not been commissioned, however, alert data are used
operationally.
4 - 26
4 - 27
Cospas-Sarsat LEOLUTs - white area: 406 & 121.5 MHz coverage; gray: only 406 MHz coverage
400G. Global Maritime Distress and Safety The GMDSS rules are found in subpart W of Part 80
System (GMDSS) (Code of Federal Regulations, Title 47, Part 80). Carriage
requirements for GMDSS radio equipment can be
The Global Maritime Distress and Safety System summarized as follows:
(GMDSS) represents a significant improvement in marine – Sea Area A1 ships will carry VHF equipment and either
safety over the previous system of short range and high seas a satellite or VHF EPIRB.
radio transmissions. Its many parts include satellite as well as – Sea Area A2 ships will carry VHF and MF equipment
advanced terrestrial communications systems. Operational and a satellite EPIRB.
service of the GMDSS began on 1 February 1992, with full – Sea Area A3 ships will carry VHF, MF, a satellite EPIRB
implementation achieved on 1 February 1999. and either HF or satellite communication equipment.
The GMDSS was adopted by amendments in 1988 by – Sea Area A4 ships will carry VHF, MF and HF
the Conference of Contracting Governments to the equipment and a satellite EPIRB.
International Convention for the Safety of Life at Sea – All ships will carry equipment for receiving MSI
(SOLAS), 1974. The GMDSS offers the greatest broadcasts and equipment for survival craft.
advancement in maritime safety since the enactment of Ships at sea must be capable of the following functional
regulations following the Titanic disaster in 1912. It is an GMDSS requirements:
automated ship-to-ship, shore-to-ship and ship-to-shore – Ship-to-shore distress alerting (by two independent
system covering distress alerting and relay, the provision of means, each using a different communication service).
Maritime Safety Information (MSI) and basic – Shore-to-ship distress alerting.
communication links. Satellite and advanced terrestrial – Ship-to-ship distress alerting.
systems are incorporated into a modern communications – SAR coordination.
network to promote and improve safety of life and property – On-scene communications.
at sea throughout the world. The equipment required on – Transmission and receipt of emergency locating signals.
board ships will depend not on their tonnage, but rather on – Transmission and receipt of MSI.
the sea area in which the vessel operates. This is – General radio communications.
fundamentally different from the previous system, which – Bridge-to-bridge communications.
based requirements on vessel size alone. The greatest To meet the requirements of the functional areas above
benefit of the GMDSS is that it vastly reduces the chances the following is a list of the minimum communications
of ships sinking without a trace and enables search and equipment needed for all ships:
rescue (SAR) operations to be launched without delay. – VHF radio capable of transmitting and receiving DSC on
SHIP CARRIAGE REQUIREMENTS: By the terms of channel 70 and radiotelephony on channels 6, 13, and 16.
the SOLAS Convention, the GMDSS provisions apply to – Radio receiver capable of maintaining a continuous DSC
cargo ships of 300 gross tons and over and ships carrying watch on VHF channel 70.
more than 12 passengers on international voyages. Unlike – Search and rescue transponders (SART) (two on every
previous shipboard carriage regulations that specified passenger vessel and cargo vessels of 500 gross tons and
equipment according to size of vessel, the GMDSS over and at least one on every cargo vessel 300 gross tons
carriage requirements stipulate equipment according to the and over but less than 500 gross tons) operating in the 9
area the vessel operates in. These areas are designated as GHz band.
follows: – Receiver capable of receiving NAVTEX broadcasts
anywhere NAVTEX service is available.
– Sea Area A1 - An area within the radiotelephone – Receiver capable of receiving either SafetyNET or HF
coverage of at least one VHF coast station in which NBDP (if service is provided) anywhere NAVTEX is not
continuous Digital Selective Calling (DSC - a radio available.
receiver that performs distress alerting and safety calling – Satellite EPIRB capable of being activated manually or
on HF, MF and VHF frequencies) is available, as may be float-free self-activated.
defined by a Contracting Government to the 1974 – Two-way hand held VHF radios (two sets minimum on
SOLAS Convention. This area extends from the coast to 300-500 gross tons cargo vessels and three sets minimum
about 20 miles offshore. on cargo vessels of 500 gross tons and upward and on all
– Sea Area A2 - An area, excluding sea area A1, within the passenger ships).
radiotelephone coverage of at least one MF coast station Additionally, each sea area has its own requirements
in which continuous DSC alerting is available, as may be under GMDSS which are as follows:
defined by a Contracting Government. The general area – Sea Area A1:
is from the A1 limit out to about 100 miles offshore. Vessels that operate only in Sea Area A1 must meet the
– Sea Area A3 - An area, excluding sea areas A1 and A2, above requirements for all ships and the following:
within the coverage of an Inmarsat geostationary satellite – 1. General VHF radiotelephone capability.
in which continuous alerting is available. This area is – 2. Capability of initiating a distress alert from a
from about 70˚N to 70˚S. navigational position by using either:
– Sea Area A4 - All areas outside sea areas A1, A2 and – (a) VHF DSC; or
A3. This area includes the polar regions, where – (b) Category I 406 MHz EPIRB (this requirement
geostationary satellite coverage is not available. may be met by either installing the 406 MHz
4 - 28
EPIRB required for all ships near the navigational – 4. Capability of initiating a distress alert by either of
position or by having remote activation the following:
capability); or – (a) Category I 406 MHz EPIRB (this requirement
– (c) MF DSC; or may be met by installing the 406 MHz EPIRB
– (d) HF DSC; or near the navigational position or by having remote
– (e) an Inmarsat Ship Earth Station (SES). activation capability); or
– Sea Areas A1 and A2: – (b) HF DSC; or
Vessels that operate in Sea Areas A1 and A2 must meet – (c) an Inmarsat SES.
the above requirements for all ships and the following: – 5. An MF/HF radio installation capable of transmitting
– 1. An MF radio installation capable of distress and and receiving on all distress and safety frequencies in
safety communications from a navigational position the bands between 1605-27500 kHz using DSC,
on: radiotelephony, and narrow-band direct-printing
– (a) 2187.5 kHz using DSC; and telegraphy.
– (b) 2187.5 kHz using radiotelephony. – 6. Equipment capable of maintaining DSC watch on
– 2. Equipment capable of maintaining a continuous 2187.5 kHz, 8414.5 kHz and on at least one of the
DSC watch on 2187.5 kHz (may be combined with distress and safety DSC frequencies 4207.5 kHz, 6312
MF installation in paragraph (1)(a) of this section, but kHz, 12577 kHz, or 16804.5 kHz, although it must be
must have separate receiver). possible to select any of these DSC distress and safety
– 3. Capability of initiating a distress alert from a frequencies at any time (the watch-maintaining
navigational position by using either: receiver may be separate from or combined with the
– (a) Category I 406 MHz EPIRB (this requirement MF/HF installation in paragraph (5) of this section).
may be met by installing the 406 MHz EPIRB – 7. Capability of initiating a distress alert by either of
near the navigational position or by having remote the following:
activation capability); or – (a) Category I 406 MHz EPIRB (this requirement
– (b) HF DSC; or may be met by installing the 406 MHz EPIRB
– (c) an Inmarsat SES. near the navigational position or by having remote
– 4. Capability of transmitting and receiving general activation capability); or
radio communications using radiotelephony or – (b) a separate Inmarsat SES.
direct-printing telegraphy by either: – 8. Capability of transmitting and receiving general
– (a) an MF or HF radio installation operating on radio communications using radiotelephony or
working frequencies in the bands 1605-4000 kHz, direct-printing telegraphy by an MF/HF radio
or 4000-27500 kHz (this capability may be added installation operating on working frequencies in the
to the MF installation in paragraph (1) of this bands 1605-4000 kHz and 4000-27500 kHz (this
section); or capability may be added to the MF/HF installation in
– (b) an Inmarsat SES. paragraph (5) of this section).
– Sea Areas A1, A2 and A3: NOTE: It must be possible to initiate transmission of
Vessels that operate in Sea Areas A1, A2 and A3 must distress alerts by the radio installations specified in
meet the above requirements for all ships and either, paragraphs (1), (2), (4), (5), and (7) of this section from
paragraphs (1) - (4) or (5) - (8) of the following: the position from which the ship is normally navigated.
– 1. An Inmarsat SES capable of: – Sea Areas A1, A2, A3 and A4:
– (a) transmitting and receiving distress and safety Vessels that operate in Sea Areas A1, A2, A3 and A4
communications by means of direct-printing must meet the above requirements for all ships and the
telegraphy; following:
– (b) transmitting and receiving distress priority – 1. An MF/HF radio installation capable of transmitting
calls; and receiving on all distress and safety frequencies in
– (c) maintaining watch for shore-to-ship distress the bands between 1605-27500 kHz using DSC,
alerts including those directed to specifically radiotelephony, and narrow-band direct-printing
defined geographical areas; telegraphy.
– (d) transmitting and receiving general radio – 2. Equipment capable of maintaining DSC watch on
communications using either radiotelephony or 2187.5 kHz, 8414.5 kHz and on at least one of the
direct-printing telegraphy. distress and safety DSC frequencies 4207.5 kHz, 6312
– 2. An MF radio installation capable of distress and kHz, 12577 kHz, or 16804.5 kHz, although it must be
safety communications on: possible to select any of these DSC distress and safety
– (a) 2187.5 kHz using DSC; frequencies at any time (the watch-maintaining
– (b) 2187.5 kHz using radiotelephony. receiver may be separate from or combined with the
– 3. Equipment capable of maintaining a continuous MF/HF installation in paragraph (1) of this section).
DSC watch on 2187.5 kHz (may be combined with – 3. Capability of initiating a distress alert by both of the
MF installation in paragraph (2)(a) of this section, but following:
must have separate receiver). – (a) Category I 406 MHz EPIRB (this requirement
may be met by installing the 406 MHz EPIRB
4 - 29
near the navigational position or by having remote then down to the SESs on ships at sea. Communications
activation capability); and between the LES and the Inmarsat satellite are in the 6
– (b) the MF/HF installation using DSC on any of GHz band (C-band). The satellite routes ship to shore
the above DSC distress alerting frequencies. It traffic to the LES in the 4 GHz band (C-band). The SESs
must be possible to initiate the distress alert by provide two-way communications between ship and shore.
this means from the position from which the ship Communications between the SES and the satellite are in
is normally navigated. the 1.6 GHz band (L-band), while the satellite routes shore
– 4. Capability of transmitting and receiving general to ship traffic to the SES in the 1.5 GHz band (L-band).
radio communications using radiotelephony and Inmarsat provides four satellite communications
direct-printing telegraphy by an MF/HF radio systems:
installation operating on working frequencies in the – Inmarsat-A, the original Inmarsat system, operates at a
bands 1605-4000 kHz and 4000-27500 kHz (this transfer rate of up to 9600 bits per second and provides
capability may be added to the MF/HF installation in two-way direct-dial phone, telex, facsimile (fax),
paragraph (1) of this section). electronic mail and data communications. Although
Inmarsat-A is approved for fitting in ships as part of their
GMDSS information, provided by the U.S. Coast Guard GMDSS equipment, it is not mandatory and does not
Navigation Center, is internet accessible through the World contribute any unique functionality that is not also
Wide Web at: provided by other equipment in the full GMDSS suite.
http://www.navcen.uscg.gov/marcomms/default.htm NOTE: The scheduled withdrawal of Inmarsat-A
The information available includes worldwide NAVTEX services will take effect on 31 December 2007.
and Inmarsat SafetyNET schedules, U.S. NAVTEX service – The Inmarsat-B system also provides two-way
areas, U.S. SAR areas, status of shore-side direct-dial phone, telex, fax and data communications at
implementation, regulatory information, NAVAREA chart, a transfer rate of up to 9600 bits per second, but uses
HF narrow band direct printing and radiotelephone digital technology to provide high quality, reliable and
channels used for distress and safety calling, information cost effective communication services.
on GMDSS coast stations, AMVER and International Ice – Inmarsat-C provides a store and forward data messaging
Patrol information, information concerning radiofacsimile capability (but no voice) at 600 bits per second, and is
and other maritime safety broadcasts, and digital selective qualified by the IMO to comply with the GMDSS
calling information. requirements for receiving MSI data on board ship.
Various equipment manufacturers produce this type of
400H. The Inmarsat System SES, which is small, lightweight, and utilizes an
omnidirectional antenna.
Inmarsat, a limited private company of more than 600 – Inmarsat Fleet F77 is a fully integrated satellite
partners worldwide, is an important element within communication service incorporating voice and data
GMDSS providing maritime safety communications for applications. It meets the latest distress and safety
ships at sea. In accordance with its convention, Inmarsat requirements, as specified in IMO Resolution A.888
provides the space segment necessary for improving (21), for voice pre-emption and prioritization within the
distress communications, efficiency and management of GMDSS. Inmarsat Fleet F77 recognizes four levels of
ships, and maritime correspondence services. priority:
The basic components of the Inmarsat system include – distress,
the Inmarsat space segment, Land Earth Stations (LESs), – urgency,
and mobile Ship Earth Stations (SESs). – safety, and
The Inmarsat space segment is comprised of four – other routine communications
communications satellites in geostationary orbit that and provides access to emergency communications in
provide primary coverage. Five additional satellites in orbit both ship-to-shore and shore-to-ship directions for
serve as spares. distress, urgency and safety traffic originated by RCCs or
The higher polar regions are not visible to the other SAR authorities.
operational satellites and coverage is available between NOTE: Inmarsat-A and -B terminals are used for voice
70˚N and 70˚S. Satellite coverage is divided into four and high speed data capability. These terminals must be
ocean regions, which are: used in conjunction with a SafetyNET receiver or an
– Atlantic Ocean Region - East (AOR-E). Inmarsat-C transceiver. The Inmarsat-C/A and -C/B is the
– Atlantic Ocean Region - West (AOR -W). preferred combination for the following reasons:
– Pacific Ocean Region (POR). – A satellite-option vessel must have a transmit capability
– Indian Ocean Region (IOR). on either Inmarsat-C/A or -C/B. If the vessel is
The LESs provide the interface between the satellite Inmarsat-A or -B equipped, then the Inmarsat-C provides
network and the public switched telephone network redundancy.
(PSTN), public data network (PDN), and various private – The USCG and the National Weather Service strongly
line services. These networks link registered information encourage vessels which participate in the voluntary
providers to the LES. The data then travels from the LES to AMVER position reporting and weather observing
the Inmarsat Network Coordination Station (NCS) and programs to equip with Inmarsat-C since its data
4 - 30
reporting capability enables a much less costly report INMARSAT SES CAPABILITY: An EGC receiver is
than does the Inmarsat-A or -B, or HF radioteletype defined as a single channel receiver with a dedicated
formats. These voluntary ship reports will be accepted by message processor. SES classes 2 and 3 provide an EGC
the government at no cost to the ship. The data reporting capability in addition to shore to ship and ship to shore
service is also available at very low cost for other brief messaging capabilities. The mandatory capabilities of an
reports which can be compressed to 32 bytes of data or EGC receiver are defined as:
less. – Continuous reception of an NCS common channel and
– Redundancy in selective equipment is not only very processing the information according to EGC protocol.
desirable but, under GMDSS rules, gives the vessel – Automatic recognition of messages directed to a fixed
greater options in how GMDSS equipment is geographic area, and service codes as selected by the
maintained. Ship owners/operators must generally receiver operator.
provide shore-based maintenance, onboard maintenance, Additional optional capabilities are required for the
and limited equipment duplication. reception of FleetNET:
– Vessels are tracked automatically when a navigation – Automatic recognition of uniquely addressed messages
receiver is connected to an Inmarsat terminal by directed to a particular receiver.
programming an automatic transmission of ship position – Automatic recognition of messages directed to a group to
at specified times or by random polling from shore. This which the receiver operator subscribes.
is done with the owner/operator’s permission. When a – Automatic response to group ID updates directed to that
navigation receiver is available, it should be connected to EGC receiver, adding or deleting group IDs as
the Inmarsat-C, since the Coast Guard distress alerts are commanded.
broadcast to all ships within a specified distance from a The EGC receiver shall be capable of being tuned to any
distress scene. The Inmarsat-C processor will print the channel in the band 1530.0 MHz to 1545.0 MHz in
alert if the ship’s position is within the specified area. increments of 5 kHz. The EGC receiver shall be equipped
Alternatively, the ship’s position must be entered with facilities for storing up to 20 NCS channel numbers.
manually every four hours to facilitate this safety service. Four of these will be permanently assigned global beam
If a ship will accommodate an Inmarsat-C or frequencies, which are:
SafetyNET receiver in addition to an Inmarsat-A or -B NCS NCS Common Channel Frequency
receiver, the separate omnidirectional antenna should be Channel No.
used rather than the stabilized, tracking antenna of the AOR-W 11080 1537.7 MHz
Inmarsat-A or -B. The reason for this is to have a AOR-E 12580 1541.45 MHz
completely separate system in case of an Inmarsat-A or -B POR 12580 1541.45 MHz
antenna failure. There is also a primary designated satellite IOR 10840 1537.1 MHz
for SafetyNET broadcasts in each of 16 NAVAREAs
worldwide, and the Inmarsat-C should guard that
designated satellite when in areas of overlapping coverage These four numbers shall be stored in ROM and shall not
(i.e., the Inmarsat-C can track the satellite designated for be alterable. The remaining list of NCS Common Channel
MSI broadcasts and the Inmarsat-A or -B can track the Frequencies (approximately 16 valid) will be published by
other satellite, if preferred). Ships with both Inmarsat -A/B Inmarsat and assigned as expansion common channels.
and -C terminals should designate one as the primary These shall be held in non-volatile but alterable storage,
GMDSS terminal. In most cases the Inmarsat-C will be and be capable of operator alteration in the event that
selected to minimize the emergency power requirements. Inmarsat decides to update the frequency plan by adding,
INMARSAT SERVICES: Enhanced Group Call (EGC) deleting, or changing allocations.
is a message broadcast service within the Inmarsat-C MESSAGE PROCESSING: Message processing will be
Communications System. It allows terrestrial registered based on the header field. For messages with a double
information providers to pass messages or data to mobile header, the two packets must be regarded as a single
Enhanced Group Call (EGC) receivers, class 2 or class 3 message and will not be printed until completely received,
SESs, or Inmarsat-A and Inmarsat-B SESs equipped with even in the case of multipacket messages. Acceptance or
EGC receivers. EGC messages are sent to the LES by rejection of service code-types shall be under operator
registered shore-based information providers using control with the following exceptions:
terrestrial facilities, such as Telex. The messages are – Receivers shall always receive navigational warnings,
processed at the LES and forwarded to a Network meteorological warnings, SAR information, and
Coordination Station (NCS) which transmits them on an shore-to-ship distress alerts (which are directed by the
NCS common channel. There are two basic services geographical area within which the receiver is
offered by EGC: SafetyNET and FleetNET. SafetyNET is positioned).
a service provided primarily for the dissemination of MSI, – Unique and group identities shall not be programmable.
such as ship to shore distress alerts, weather forecasts, and EGC RECEIVER ADDRESSING: The five basic
coastal warnings. FleetNET is a commercial methods of addressing EGC receivers are:
communication service which allows registered terrestrial – All ships call - urgent marine information.
information providers to send messages to predefined – Inmarsat System message addressing - receives
groups of subscribers (see EGC Receiver Addressing). messages according to type and priority.
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4 - 32
4 - 33
COVERAGE OF INMARSAT SATELLITES IN RELATION TO THE EXISTING NAV/MET AREAS

– Group addressing - FleetNET, group ID stored within one header has been received correctly). A parity check on
receiver, which is accessible only by RF path. all incoming characters shall be performed, and in the
– Unique addressing - FleetNET, allocated by Inmarsat. event of a parity error in a received character, the “low
– Geographic addressing - messages sent by ship’s line” character shall be displayed and/or printed. Outputs
position. for multi-packet messages which have been received
NOTE: The type of address used in the header of an incomplete should provide a positive indication of the
EGC packet is uniquely determined by the service code position of the missed packet(s). Subsequent receptions of
field. messages printed with mutilated characters shall be output
Both FleetNET and SafetyNET services make use of a again until received error-free.
flexible addressing technique to allow the reception of DISTRESS PRIORITY MESSAGES: Receipt of a valid
messages from a variety of service providers depending on distress or urgency priority message will cause the receiver
the particular requirements of the user. The SafetyNET to give an audible alarm. Provision shall be made to extend
service utilizes geographic area addressing technique to this alarm to the station from which the ship is normally
direct messages to ships within a defined boundary. navigated or other remote stations. This alarm should be
The FleetNET service employs closer user group and reset in manual mode only.
unique receiver addressing to provide secure transmission MESSAGE OUTPUT: Inmarsat recommends that the
of a message from the registered terrestrial information EGC receiver have a printer. The display or printer, if
provider to the desired recipient(s) (See sec. 400I.). fitted, must be capable of presenting at least 40 characters
MESSAGE SEQUENCING: All messages will be per line of text. The EGC receiver should ensure that if a
transmitted with a unique sequence number and originating word cannot be accommodated in full on its line, it shall be
LES ID. Each subsequent transmission of the message will transferred to the next line. Where a printer is fitted, a local
contain the original sequence number. When a message has low paper audible alarm should be installed to give
been received error-free and a permanent record made, the advance warning of a low paper condition. This alarm
unique 16 bit sequence number, the LES ID, and the should be of a different pitch/tone so as not to confuse this
service code field associated with that message are stored alarm with that of the distress alarm. All SafetyNET
in memory and the information used to inhibit the printing messages shall be annotated with the time (UTC) and date
of repeated transmissions of the same message. The EGC received. This information shall be displayed or printed
receiver should be capable of internally storing at least 255 with the message.
such message identifications. These message NOTE: The time can be deduced from the frame count.
identifications should be stored with an indication of the OPERATOR CONTROLS: The following control
number of hours that have elapsed since the message was functions and displays shall be provided as a minimum
received. Subsequent reception of the same message indication of EGC carrier frame synchronization (or loss of
identification shall reset the timer. After between 60 and 72 synchronization):
hours, message identifications may automatically erase. If – Selection of an EGC carrier frequency.
the number of received message identifications exceeds the – Means of inputting ship’s position, current NAVAREA,
capacity of memory allocated for the store, the oldest or current NAVTEX service coverage area.
message identification may be erased. Receivers shall be fitted with the operator controls to
TEXT PARAMETERS: For the EGC service, the allow the operator to select the desired geographic area and
International Reference Version of the International message categories as previously described (see THE
Alphabet, as defined in the Consultative Committee on INMARSAT SYSTEM, INMARSAT SES CAPABILITY,
International Telephony and Telegraphy (CCITT) Red and EGC RECEIVER ADDRESSING).
Book Rec. T.50, is used. Characters are coded as eight bits NAVIGATIONAL INTERFACE: In order that a
using odd parity. Other character sets according to receiver’s position be automatically updated for
International Standards Organization (ISO) 2022 or geographically addressed messages, SOLAS requires that
CCITT Red Book Rec. T.61 are used optionally for certain Inmarsat-C equipment have an integral navigation receiver
services. Inmarsat recommends that EGC equipment or be externally connected to a satellite navigation receiver.
capable of receiving messages composed using A suggested standard interface is National Marine
International Telegraph Alphabet No. 2 do not make use of Electronics Association (NMEA) 0183 Standard for
national options for Numbers 6, 7, and 8 in figure case to Interfacing Electronic Marine Navigational Devices.
avoid varying interpretations in the Inmarsat-C System.
ERROR DETECTION: The EGC message will employ 400I. The SafetyNET System
three levels of error detection:
– An arithmetic checksum is used to detect packet errors. SafetyNET is a service of Inmarsat-C’s Enhanced Group
– An arithmetic checksum is used to detect header errors. Call (EGC) system. The EGC system is a method used to
– Parity checking is used to indicate character errors in the specifically address particular regions or ships. Its unique
information field. addressing capabilities allow messages to be sent to all
Only packets with header fields received without error vessels in both fixed geographical areas or to
shall be processed for local message recording (even if the predetermined groups of ships. SafetyNET is the service
packet itself contains an error). In the case of double designated by the IMO through which ships receive
header messages the message may be processed (even if Maritime Safety Information.
4 - 34
SafetyNET is an international direct-printing position, intended route, or a fixed area programmed by the
satellite-based service for the promulgation of navigational operator (See sec. 400H: THE INMARSAT SYSTEM;
and meteorological warnings, distress alerts, forecasts, and OPERATOR CONTROLS.). This preamble also allows
other safety messages. It fulfills an integral role in GMDSS suppression of certain types of MSI that are not relevant to
as developed by the IMO. The ability to receive SafetyNET a particular ship. As each message will also have a unique
service information will be generally necessary for all identity, the reprinting of messages already received
ships that sail beyond coverage of NAVTEX correctly is automatically suppressed.
(approximately 200 miles offshore) and is recommended to MSI is promulgated by various information providers
all administrations having the responsibility for marine around the world. Messages for transmission through the
affairs and mariners who require effective MSI service in SafetyNET service will, in many cases, be the result of
waters not served by NAVTEX. coordination between authorities. Information providers
SafetyNET can direct a message to a given geographic will be authorized to broadcast through SafetyNET by
area based on EGC addressing. The area may be fixed, as IMO. Authorized information providers are:
in the case of a NAVAREA or weather forecast area, or it – National hydrographic offices for navigational warnings.
may be uniquely defined by the originator. This is – National weather services for meteorological warnings
particularly useful for messages such as local storm and forecasts.
warnings or a shore-to-ship distress alerts for which it – RCCs for shore-to-ship distress alerts and other urgent
would be inappropriate to alert ships in an entire ocean information.
region. – International Ice Patrol for North Atlantic ice hazards.
SafetyNET messages can be originated by a Registered Each information provider prepares their SafetyNET
Information Provider anywhere in the world and broadcast messages with certain characteristics recognized by the
to the appropriate ocean area through an Inmarsat-C LES. EGC service. These characteristics, known as “C” codes,
Messages are broadcast according to their priority are combined into a generalized message header format as
(Distress, Urgency, Safety, or Routine). follows: C1:C2:C3:C4:C5. Each “C” code controls a
Virtually all navigable waters of the world are covered different broadcast criterion and is assigned a numerical
by the operational satellites in the Inmarsat System. Each value according to available options. A sixth “C” code,
satellite broadcasts EGC traffic on a designated channel. “C0,” may be used to indicate the ocean region (e.g.,
Any ship sailing within the coverage area of an Inmarsat AOR-E, AOR-W, POR, IOR) when sending a message to
satellite will be able to receive all the SafetyNET messages an LES that operates in more than one ocean region.
broadcast over this channel. The EGC channel is optimized Because errors in the header format of a message may
to enable the signal to be monitored by SESs that are prevent its being released, MSI providers must install an
dedicated to the reception of EGC messages. This Inmarsat SafetyNET receiver to monitor the broadcasts it
capability can be built into other standard SESs. It is a originates. This also ensures quality control.
feature of satellite communications that reception is not The “C” codes are transparent to the mariner but are
generally affected by the position of the ship within the used by information providers to identify various
ocean region, atmospheric conditions, or time of the day. transmitting parameters. C1 designates the message
Messages can be transmitted either to geographic areas priority from distress to urgency, safety, and routine. MSI
(area calls) or to groups of ships (group calls): messages will always be at least at the safety level. C2 is
– Area calls can be to a fixed geographic area, such as one the service code or type of message (for example, long
of the 16 NAVAREAs, or to a temporary geographic area range NAVAREA warning or coastal NAVTEX warning).
selected by the originator. Area calls will be received It also tells the receiver the length of the address (the C3
automatically by any ship whose receiver has been set to code) it will need to decode. C3 is the is the address code.
one or more fixed areas or recognizes a temporary area It can be the two digit code for the NAVAREA number for
by geographic position. instance, or a 10 digit number to indicate a circular area for
– Group calls will be received automatically by any ship a meteorological warning. C4 is the repetition code that
whose receiver acknowledges the unique group identity instructs the LES in how long and when to send the
associated with a particular message. message to the NCS for actual broadcast. A six minute
Reliable delivery of messages is ensured by forward echo (repeat) may also be used to ensure that an urgency
error correction techniques. Experience has demonstrated (unscheduled) message has been received by all ships
that the transmission link is generally error-free and low affected. C5 is a constant and represents a presentation
error reception is achieved under normal circumstances. code, International Alphabet number 5, “00.”
Given the vast ocean coverage by satellite, some form of
discrimination and selectivity in printing the various Broadcasts of MSI in the international SafetyNET
messages is required. Area calls will be received by all service are in English. The different types of MSI
ships within the ocean region coverage of the satellite; broadcast over the SafetyNET service include:
however, they will be printed only by those receivers that – Coastal warnings (broadcast to areas where NAVTEX
recognize the fixed area or the geographic position in the MSI is not provided):
message. The message format includes a preamble that – Navigational and meteorological warnings;
enables the microprocessor in a ship’s receiver to decide to – Ice reports;
print those MSI messages that relate to the present – Search and rescue information;
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4 - 36
STATUS OF MARITME SAFETY INFORMATION BROADCASTS

INTERNATIONAL SafetyNET SERVICE
NAVAREA/ NAV MET SAR OCEAN REGION

METAREA WARNINGS FORECASTS & ALERTS FOR SCHEDULED
WARNINGS BROADCASTS
I (UK) X X X AOR-E
II (France) X X X AOR-E + AOR-W
III (Spain/Greece) X X X AOR-E
IV (USA) X X X AOR-W
V (Brazil) X X X AOR-E
VI (Argentina) X X X AOR-W
VII (South Africa) X X X AOR-E + IOR
VIII (India/Mauritius/La Reunion) X X (Note 3) X IOR
IX (Pakistan) X X X IOR
X (Australia) X X X IOR + POR
XI (Japan/China) X X X IOR + POR
XII (USA) X X X POR + AOR-W
XIII (Russian Federation) X X X POR
XIV (New Zealand) X X X POR
XV (Chile) X X X AOR-W
XVI (Peru/USA) X X X AOR-W
Notes:
1. X = Full Service now available
2. IMO has decided that routine broadcasts of navigational warnings and meteorological forecasts will be made at
scheduled times over a single nominated satellite for each NAVAREA/METAREA. Unscheduled broadcasts of
SAR Alert Relays and severe weather warnings will be made over all satellites which serve the area concerned. See
the Inmarsat Maritime Communications Handbook for further guidance.
3. India provides meteorological forecasts and warnings for METAREA VIII north of the equator through LES
Arvi (IOR). Mauritius/La Reunion provide meteorological forecasts and warnings for METAREA VIII south of the
equator through LES Burum, Station 12 (IOR).
4 - 37
– Meteorological forecasts; It is recommended that the EGC receiver be updated at

– Pilot service messages; least every four hours with the ship’s position for the
– DECCA, LORAN and SATNAV system messages; following reasons:
– Other electronic navaid messages; – To decide if the receiver should print a message which it
– Additional navigational messages. has received addressed to a specific geographic area;
– Meteorological and NAVAREA warnings and – To print only messages for the required areas (if the
meteorological forecasts to ships within specified ship’s position has not been updated for 12 or 24 hours,
NAVAREAs/METAREAs. the receiver will automatically print or store all
– Search and rescue coordination to fixed areas. geographically addressed messages within the entire
– Search and rescue coordination to ships within specified ocean region);
circular areas. – To ensure that the correct position is given if a distress
– Urgency messages, meteorological and navigational alert has to be sent.
warnings to ships within specified circular areas. SOLAS regulations now require that Inmarsat-C
– Shore-to-ship distress alerts to ships within specified equipment have an integral satellite navigation receiver, or
circular areas. be externally connected to a satellite navigation receiver,
– Urgency messages and navigational warnings to ships i.e., a GPS receiver.
within specified rectangular. Although an EGC receiver will receive and can print all
MSI messages are generally broadcast with a key word SafetyNET broadcasts made throughout an entire ocean
in their header indicating the priority of the message, i.e., region, many messages may not be useful to a ship, i.e.,
Distress or MAYDAY for Priority 3, URGENCY or PAN those applicable to NAVAREAs beyond the ship’s planned
PAN for Priority 2, and SAFETY or SECURITE for voyage, or those on subjects not relevant to the ship’s
Priority 1. circumstances. Every receiver is supplied with software
In order to avoid excessive duplication of MSI that stores the geographical boundaries of the NAVAREAs:
broadcasts, the IMO has authorized the following it can be programmed to print only essential messages
arrangements: applicable to the current area, in addition to any other areas
– For a given NAVAREA/METAREA which is covered by programmed by the operator, and to reject all other
more than one ocean region satellite, scheduled messages. The receiver is unable to reject “all ship”
broadcasts of MSI, such as navigational warnings and messages, such as shore-to-ship distress alerts and
meteorological information, are made only through a MET/NAV warnings.
single nominated satellite/ocean region. Under SOLAS requirements, it is mandatory for vessels
– For a NAVAREA/METAREA which is covered by more to receive the following types of SafetyNET MSI
than one ocean region satellite, unscheduled broadcasts messages:
of MSI, such as gale warnings and distress alert relays, – Shore-to-ship distress alert relays for the current
are made through all satellites/ocean regions which cover NAVAREA;
the area concerned. – Navigational warnings for the current NAVAREA;
– Meteorological warnings for the current METAREA.
SOLAS-compliant vessels must meet the following If the ship’s EGC receiver does not automatically select
requirements for receiving MSI broadcasts: these mandatory message types, the operator must program
– Watch-keeping - every ship, while at sea, shall maintain the receiver manually.
a radio watch for broadcasts of Maritime Safety In addition, the IMO recommends a ship’s EGC receiver
Information on the appropriate frequency or frequencies be programmed to receive the following messages:
on which such information is broadcast for the area in – Meteorological forecasts;
which the ship is navigating. – MSI for any other NAVAREAs in which the ship is
– Logging messages - a written record shall be kept in the expected to sail.
radio log of the time and identity of all safety messages The transmission schedule for the full GMDSS service
received. A printed copy shall be kept of the text of all broadcasts of routine weather bulletins (including
distress traffic. warnings) and navigational warnings for the high seas is
In addition to these mandatory requirements, the IMO given in Tables I and II for the different ocean areas
recommends that all current navigational and (extracted from ANNEX 8 of the IMO GMDSS Master
meteorological messages be retained on the bridge, for as Plan). The actual ocean region satellites through which
long as they are applicable, for the use of the person in these bulletins and warnings are transmitted are also
charge of the navigational watch. indicated.
4 - 38
TABLE I - GMDSS TRANSMISSION SCHEDULE FOR INTERNATIONAL SAFETYNET

SERVICE BROADCASTS OF ROUTINE WEATHER BULLETINS
NAV/MET Issuing LES Broadcast Schedule Ocean Region
AREA Country (UTC) Satellite
I United Kingdom Goonhilly 0930, 2130 AOR-E
II France Aussaguel 0900, 2100 AOR-E/AOR-W
III Greece1 Thermopylae 1000, 2200 AOR-E
IV United States Southbury 0430, 1030, 1630, 2230 AOR-W
V Brazil Tangua 0730, 1930 AOR-E
VI Argentina Southbury 0230, 1730 AOR-W
VII South Africa Burum 0940, 1940 AOR-E/IOR2

VIII India Arvi 0900, 1800 (N of 0˚) IOR
Mauritius/La Reunion Aussaguel 0130, 1330 (S of 0˚) IOR

00003, 06003, 12003, 18003 (S of 0˚)
IX Pakistan Perth 0700 IOR
X Australia Perth 1030, 2330 IOR
1100, 2300 POR

02104, 06454, 13004, 19504 (Bass
Strait)5
0815, 2015 (Northern Territory)6
0800, 2000 (Western Australia)7 IOR
XI China Beijing 0330, 1015, 1530, 2215 IOR
Japan8 Yamaguchi 0230, 0830, 1430, 2030 (N of 0˚) POR

0815, 2015 (S of 0˚)
XII United States Southbury/Santa Paula 0545, 1145, 1745, 2345 AOR-W/POR
XIII Russian Federation Eik 0930, 2130 POR
XIV New Zealand Albany (Auckland) 0930, 2130 POR

0130, 1330 (NZ coast only)
0330, 1530 (warnings only)
XV Chile Southbury 1845 AOR-W
XVI United States Southbury 0515, 1115, 1715, 2315 AOR-W

1 Scheduled bulletins and warnings for the western Mediterranean Sea are prepared by France.
2 Forecast for area 30˚S-50˚S / 50˚E-80˚E and tropical cyclone warnings are prepared by La Reunion.
3 Tropical Cyclone warnings, if any, issued by La Reunion as unscheduled broadcasts.
4 1 hour earlier during Australian Eastern Daylight Saving Time.
5 Coastal warnings and forecasts transmitted only to SafetyNET Coastal Area D in NAVAREA X.
6 Coastal warnings and forecasts transmitted only to SafetyNET Coastal Areas G and H in NAVAREA X.
7 Coastal warnings and forecasts transmitted only to SafetyNET Coastal Areas F and G in NAVAREA X.
8 Scheduled bulletins and warnings for south of the equator prepared by Australia.
4 - 39
TABLE II - GMDSS TRANSMISSION SCHEDULE FOR INTERNATIONAL SAFETYNET

SERVICE BROADCASTS OF NAVAREA WARNINGS
NAV/MET Coordinator LES Broadcast Schedule Ocean Region
AREA (UTC) Satellite
I United Kingdom Goonhilly 1730 & as appropriate AOR-E
II France Aussaguel 1630 AOR-E
III Spain Thermopylae 1200, 2400 & on receipt AOR-E
IV United States Southbury 1000, 2200 AOR-W
French Antilles (C1) 0900, 2100
French Guiana (A1)
V Brazil Tangua 0400, 1230 AOR-E
French Guiana (A1) Southbury 0900, 2100
VI Argentina Southbury 0200, 1400 AOR-W
VII South Africa Burum 1940 AOR-E/IOR
La Reunion (D1) Aussaguel 0040, 1240 IOR
Mayotte (V1) 0330, 1530
Kerguelen (K1) 0140, 1340
VIII India Arvi 1000 IOR
La Reunion (D1) Aussaguel 0040, 1240 IOR
Mayotte (V1) 0330, 1530
IX Pakistan Perth 0800 IOR
X Australia Perth 0700, 1900 & on receipt IOR/POR2
New Caledonia (N1) Southbury 0140, 1340 POR
XI Japan Beijing/Yamaguchi 0005, 0805, 1205 IOR/POR
XII United States Southbury/Santa Paula 1030, 2230 AOR-W/POR
XIII Russian Federation Eik 0930, 2130 POR
XIV New Zealand Albany (Auckland) On receipt & every 12 hrs. POR
New Caledonia (N1) Southbury 0140, 1340 POR
Wallis and Futuna (D1) 0030, 1230
French Polynesia (R1) 0250, 1450
XV Chile Southbury 0210, 1410, 2210 AOR-W
XVI Peru Southbury 0519, 1119, 1719, 2319 AOR-W

1 Coastal area code for Coastal Warnings.
2 NAVAREA X Warnings and Australian Coastal Warnings (coastal area codes A to H).
4 - 40
400J. Inmarsat-C SES Maintenance EGC SAFETYNET SET UP: Ensure that you are logged
into the appropriate satellite for the scheduled maritime
The USCG has issued the following Safety Alert safety information (MSI) that you wish to receive.
concerning the loss of Inmarsat-C safety messages. This Otherwise log in to the satellite that broadcasts the MSI for
advisory notifies users of Inmarsat-C Ship Earth Stations your required area of operation. Timetables of broadcast
(SESs) that urgent marine information, weather warning and nominated satellites can be found in various
and navigational warning broadcast messages, national/international publications, such as Pub. 117,
distress-related messages, as well as routine messages may Radio Navigational Aids (See Tables I and II in sec. 400I.),
be lost if a printer is not connected to and maintained with the IMO GMDSS Master Plan (GMDSS/Circ.8), or the
the Inmarsat-C terminal, or if floppy drive maintenance is Admiralty List of Radio Signals, Volume 5. Ensure that
not regularly performed on the terminal. Additionally, your position (Lat/Long) on the SES position screen is
certain non-GMDSS-approved software (i.e., valid. Otherwise you will receive and print ALL EGC
windows-based software) may freeze up if this SafetyNET messages broadcast via the satellite. If
maintenance is not performed. automatic position updating is not available, it is essential
All GMDSS versions of Inmarsat-C have approved data to manually update the position on a regular basis, i.e.,
terminal equipment (DTE) that interfaces with the user. every 4 hours. Instructions for doing this are in the
DTE generally refers to the computer and screen, manufacturer’s handbook.
keyboard, and printer (or user interface). These terminals If properly set up, your SES will automatically receive
are required to use only Inmarsat approved hardware and all relevant NAVAREA/METAREA and other maritime
software. However, users need to understand that proper safety information addressed to the area where you are in.
usage and housekeeping maintenance of the equipment is If you require additional information for adjacent area(s),
essential to ensure optimum user availability. you must program your terminal to receive this
To avoid problems, and to ensure that unnecessary and information. Be careful if using the “EGC only” option. If
irrelevant messages are not received, the recommended this option is selected, the terminal will, effectively, be
operating procedures in the manufacturer’s equipment logged out and you will not be able to receive normal
operating handbook and the below procedures should be messages (mail) on your terminal. Also, if you choose
followed: “EGC only,” previous EGC settings may be ignored and
MESSAGE/ARCHIVE LOG: All ingoing and outgoing the terminal may receive all EGC messages within the
messages are recorded on a disk in special log files. Each ocean region.
log file may hold a limited number of messages (limited by If Inmarsat-C is used for communication (not as a
disk size or PC storage capacity). When the free disk space supervisory control and data acquisition (SCADA) or
falls below a certain size, the terminal will display an error “black box” terminal), it MUST have a DTE terminal
message asking to insert an empty disk. A new which includes a keyboard, Video Display Unit, and
message/archive log file will then be generated on the new printer. Every Inmarsat-C terminal, if properly configured,
disk. set up and maintained, will receive all relevant messages
DISK DIRECTORY: If so configured, ingoing and addressed to it. These messages will be displayed or
outgoing messages (OUT.xxx, IN.xxx, EGC.xxx) can be printed out, stored, or both. Improper settings, including
stored on a disk (this is different than the message/archive printer settings, not in accordance with the manufacturer’s
log), where they can be viewed, erased, printed, and copied instructions, will degrade the performance.
to different directories. On some models the directory
shows the number of files (messages) stored on the 400K. Digital Selective Calling (DSC)
disk/directory and this number is limited to 112 files
(messages) regardless of the free space left. If the disk Digital Selective Calling (DSC) is an integral part of the
already holds 112 messages, you will not be able to store GMDSS used primarily for transmitting distress alerts
any more messages. When the disk is full, use the from ships and for transmitting the associated
“erase/delete” command to delete unwanted files and acknowledgments from coast stations. DSC is a digital
create free space for new messages. calling system which uses frequencies in the MF, HF or
MESSAGE ROUTING: Check the message routing VHF bands. The advantages of DSC include faster alerting
option on the terminal. Incoming mail should be routed to capabilities and automatic transmission of information
at least one of the output media—disk or printer. Enhanced such as ship’s identity, time, nature of distress, and
Group Call (EGC) SafetyNET messages with Urgency and position. IMO and ITU regulations both require that the
Distress priority will be printed out automatically, if a DSC-equipped VHF and MF/HF radios be externally
printer is fitted. EGC SafetyNET messages with Safety connected to a satellite navigation receiver (i.e., GPS). This
priority can be printed out (user option), otherwise they connection will ensure that accurate location information is
will be stored on the disk. EGC FleetNET messages can be sent to a RCC if a distress alert is transmitted. FCC
printed out (user option), otherwise they will be stored on regulations require that the ship’s navigation position is
the disk. If the Inmarsat-C is connected to a separate PC, a entered, either manually or automatically through a
path for saving incoming and outgoing mail and EGC navigation receiver, into all installed DSC equipment at
messages should be inserted/specified per the least every four hours while the ship is underway (47 CFR
manufacturer’s handbook. 80.1073).
4 - 41
Since 1 February 1999, the GMDSS provisions to the radiotelephony or NBDP. If a DSC relay is then judged
SOLAS Convention require all passenger ships and most to be necessary, it should be initiated manually only to
other ships 300 gross tons and over on international the appropriate coast station.
voyages, including all cargo ships, to carry DSC-equipped – Ships may only send a distress relay call (distress alert
radios. A listening watch aboard GMDSS-equipped ships on behalf of another vessel), if the following two
on 2182 kHz ended on that date. In May 2002, the IMO conditions both apply:
decided to postpone cessation of a listening watch aboard – the ship in distress is not itself able to transmit its own
GMDSS-equipped ships on VHF Channel 16 (156.8 distress alert, and
MHz). That listening watch had been scheduled to end on – the Master of the ship considers that further help is
1 February 2005. Once SOLAS vessels are allowed to necessary.
disband watchkeeping on VHF radiotelephone , it will not The distress relay call should be addressed to “all ships”
be possible to initiate radio communications with these or to the appropriate coast station.
vessels outside the U.S. territorial limit without Flow diagrams, which describe the actions to be taken
DSC-capable radios. The U.S Coast Guard recommends aboard ships upon receipt of DSC distress alerts from other
that VHF, MF and HF radiotelephone equipment carried on ships, can be found on pgs. 4-51 and 4-53. The IMO
ships should include a DSC capability as a matter of safety. recommends that these flow diagrams be displayed on the
To achieve this, the FCC requires that all new VHF and ship’s bridge.
MF/HF maritime radiotelephones type accepted after June In an effort to manage and reduce the number of test
1999 to have at least a basic DSC capability. calls on the MF/HF DSC distress and safety frequencies,
The content of a DSC call includes the numerical the IMO has issued COMSAR/Circ.35 (dated 21 May
address of the station (or stations) to which the call is 2004), with the following recommendation: to ensure that
transmitted, the self-identification of the transmitting excessive test calls on DSC do not overload the system,
station, and a message which contains several fields of live testing on DSC distress and safety frequencies with
information indicating the purpose of the call. Various coast stations should be limited to once a week.
types of DSC calls are available in one of four priorities: The following DSC Operational Procedures for Ships
Distress, Urgency, Safety or Routine. Routine calls could were adapted from Annex 3 of ITU Recommendation
indicate that a routine communication, i.e., telephony or M.541-9, Operational Procedures for the use of Digital
telegraphy, is required; or they could include calls related Selective-Calling (DSC) Equipment in the Maritime
to the operation of the ship, e.g., calls to port authorities, Mobile Service. Operating procedures may vary somewhat
pilots. among different radios, depending upon radio design,
A receiving station accepting a DSC call receives a software configuration, and the DSC processor/radio
display or printout of the address, the self-identification of transceiver connection.
the transmitting station, and the content of the DSC 1 DISTRESS:
message, together with an audible or visual alarm (or both) 1.1 Transmission of DSC distress alert: A distress alert
for distress and safety related calls. To increase the should be transmitted if, in the opinion of the Master, the
probability of a DSC distress call or relay being received, it ship or a person is in distress and requires immediate
is repeated several times. The transmission speed of a DSC assistance. A DSC distress alert should as far as possible
call is 100 baud at MF and HF and 1200 baud at VHF. include the ship’s last known position and the time (in
Error correction coding is included, involving the UTC) when it was valid. The position and the time may be
transmission of each character twice, together with an included automatically by the ship’s navigational
overall message check character which is to ensure the equipment or may be inserted manually.
technical integrity of the DSC system. The DSC distress alert is transmitted as follows:
In an effort to reduce the number of DSC relays of – tune the transmitter to the DSC distress channel (2187.5
distress alerts on all shipboard DSC equipment, the IMO kHz on MF, channel 70 on VHF (see Note 1 below));
has issued COMSAR/Circ.25 (dated 15 March 2001) – if time permits, key in or select on the DSC equipment
which provides new procedures for responding to keyboard (in accordance with the DSC equipment
VHF/MF and HF distress alerts. manufacturer’s instructions):
Circ.25 is summarized as follows: – the nature of the distress;
– Distress relays and acknowledgments of all types should – the ship’s last known position (latitude and longitude);
only be sent on the Master’s authority. – the time (in UTC) the position was valid;
– Ships should not acknowledge DSC alerts by sending a – type of subsequent distress communication
return DSC call; they should acknowledge only by (telephony).
radiotelephony. – transmit the DSC distress alert;
– Ships receiving a DSC distress alert on VHF Ch. 70 or – prepare for the subsequent distress traffic by tuning the
MF 2187.5 kHz are not permitted to relay the call by transmitter and the radiotelephony receiver to the distress
DSC under any circumstances (they may relay by other traffic channel in the same band, i.e., 2182 kHz on MF,
means). channel 16 on VHF, while waiting for the DSC distress
– Ships receiving a DSC distress alert on HF should wait acknowledgment.
for a period of 5 minutes of manual watchkeeping to NOTE 1: Some maritime MF radiotelephony
ascertain whether it has been acknowledged by DSC, transmitters shall be tuned to a frequency 1700 Hz lower
4 - 42
than 2187.5 kHz, i.e., 2185.8 kHz, in order to transmit the either VHF or MF channels. If no aural watch is present on
DSC distress alert on 2187.5 kHz. the relative channel (2182 kHz on MF, channel 16 on
1.2 Actions on receipt of a distress alert: Ships VHF), the coast station should be contacted by sending an
receiving a DSC distress alert from another ship should individual DSC distress relay call.
normally not acknowledge the alert by DSC since 1.4.1 Transmission of a DSC distress relay call on
acknowledgment of a DSC distress alert by use of DSC is behalf of someone else: A ship knowing that another ship
normally made by coast stations only. (Ships receiving a is in distress shall transmit a DSC distress relay call if:
DSC distress alert from another ship should set watch on – the ship in distress is not itself able to transmit the
an associated radiotelephone distress and safety traffic distress alert;
frequency and acknowledge the call by radiotelephony. See – the Master of the ship considers that further help is
also section 6.1.4.). necessary.
If a ship station continues to receive a DSC distress alert The DSC distress relay call is transmitted as follows:
on an MF or VHF channel, a DSC acknowledgment should – tune the transmitter to the DSC distress channel (2187.5
be transmitted to terminate the call only after consulting kHz on MF, channel 70 on VHF);
with a Rescue Coordination Center (RCC) or a Coast – select the distress relay call format on the DSC
Station and being directed to do so. equipment;
Ships receiving a DSC distress alert from another ship – key in or select on the DSC equipment keyboard:
should also defer the acknowledgment of the distress alert – All Ships Call (VHF), Geographic Area Call (MF/HF)
by radiotelephony for a short interval, if the ship is within or the 9-digit identity of the appropriate coast station;
an area covered by one or more coast stations, in order to – the 9-digit identity of the ship in distress, if known;
give the coast station time to acknowledge the DSC – the nature of the distress;
distress alert first. – the latest position of the ship in distress, if known;
Ships receiving a DSC distress alert from another ship – the time (in UTC) the position was valid (if known);
shall: – type of subsequent distress communication
– watch for the reception of a distress acknowledgment on (telephony).
the distress channel (2187.5 kHz on MF and channel 70 – transmit the DSC distress relay call;
on VHF); – prepare for the subsequent distress traffic by tuning the
– prepare for receiving the subsequent distress transmitter and the radiotelephony receiver to the distress
communication by tuning the radiotelephony receiver to traffic channel in the same band, i.e., 2182 kHz on MF
the distress traffic frequency in the same band in which and channel 16 on VHF, while waiting for the DSC
the DSC distress alert was received, i.e., 2182 kHz on distress acknowledgment.
MF, channel 16 on VHF; 1.5 Acknowledgment of a DSC distress relay call
– acknowledge the receipt of the distress alert by received from a coast station: Coast stations, after having
transmitting the following by radiotelephony on the received and acknowledged a DSC distress alert, may if
distress traffic frequency in the same band in which the necessary, retransmit the information received as a DSC
DSC distress alert was received, i.e., 2182 kHz on MF, distress relay call, addressed to all ships (VHF only), all
channel 16 on VHF: ships in a specific geographical area (MF/HF only), or a
– “MAYDAY;” specific ship.
– the 9-digit identity of the ship in distress, repeated 3 Ships receiving a distress relay call transmitted by a
times; coast station shall not use DSC to acknowledge the call,
– “this is;” but should acknowledge the receipt of the call by
– the 9-digit identity or the call sign or other radiotelephony on the distress traffic channel in the same
identification of own ship, repeated 3 times; band in which the relay call was received, i.e., 2182 kHz
– “RECEIVED MAYDAY.” on MF, channel 16 on VHF.
1.3 Distress traffic: On receipt of a DSC distress Acknowledge the receipt of the distress relay call by
acknowledgment the ship in distress should commence the transmitting the following by radiotelephony on the
distress traffic by radiotelephony on the distress traffic distress traffic frequency in the same band in which the
frequency (2182 kHz on MF, channel 16 on VHF) as DSC distress relay call was received:
follows: – “MAYDAY RELAY;”
– “MAYDAY;” – the 9-digit identity or the call sign or other identification
– “this is;” of the calling coast station;
– the 9-digit identity and the call sign or other – “this is;”
identification of the ship; – the 9-digit identity or call sign or other identification of
– the ship’s position in latitude and longitude or other own ship;
reference to a known geographical location; – “RECEIVED MAYDAY RELAY.”
– the nature of the distress and assistance wanted; 1.6 Acknowledgment of a DSC distress relay call
– any other information which might facilitate the rescue. received from another ship: Ships receiving a distress
1.4 Transmission of a DSC distress relay call: In no relay call from another ship shall follow the same
case is a ship permitted to transmit an all ships DSC procedure as for acknowledgment of a distress alert, i.e.,
distress relay call on receipt of a DSC distress alert on the procedure given in section 1.2 above.
4 - 43
1.7 Cancellation of an inadvertent distress alert: A 3 SAFETY:

station transmitting an inadvertent distress alert shall 3.1 Transmission of safety messages: Transmission of
cancel the distress alert using the following procedure: safety messages shall be carried out in two steps:
– 1.7.1 Immediately cancel the distress alert aurally over – announcement of the safety message;
the telephony distress traffic channel associated with – transmission of the safety message.
each DSC channel on which the “distress alert” was The announcement is carried out by transmission of a
transmitted. DSC safety call on the DSC distress calling channel
– 1.7.2 Monitor the telephony distress traffic channel (2187.5 kHz on MF, channel 70 on VHF). The safety
associated with the DSC channel on which the distress message is normally transmitted on the distress and safety
was transmitted, and respond to any communications traffic channel in the same band in which the DSC call was
concerning that distress alert as appropriate. sent, i.e., 2182 kHz on MF, channel 16 on VHF. The DSC
2 URGENCY: safety call may be addressed to all ships (VHF only), ships
2.1 Transmission of urgency messages: Transmission in a specific geographical area (MF/HF only), or to a
of urgency messages shall be carried out in two steps: specific station. The frequency on which the safety
– announcement of the urgency message; message will be transmitted shall be included in the DSC
– transmission of the urgency message. call.
The announcement is carried out by transmission of a The transmission of a safety message is thus carried out
DSC urgency call on the DSC distress calling channel as follows:
(2187.5 kHz on MF, channel 70 on VHF). The urgency Announcement:
message is transmitted on the distress traffic channel (2182 – tune the transmitter to the DSC distress calling channel
kHz on MF, channel 16 on VHF). The DSC urgency call (2187.5 kHz on MF, channel 70 on VHF);
may be addressed to all stations at VHF, or a geographic – select the appropriate calling format on the DSC
area at MF/HF, or to a specific station. The frequency on equipment (all ships (VHF only), geographical area
which the urgency message will be transmitted shall be (MF/HF only), or individual);
included in the DSC urgency call. – key in or select on the DSC equipment keyboard (in
The transmission of an urgency message is thus carried accordance with the DSC equipment manufacturer’s
out as follows: instructions):
Announcement: – specific area or 9-digit identity of specific station, if
– tune the transmitter to the DSC distress calling channel appropriate;
(2187.5 kHz on MF, channel 70 on VHF); – the category of the call (safety);
– select the appropriate calling format on the DSC – the frequency or channel on which the safety message
equipment (all ships (VHF only), geographical area will be transmitted;
(MF/HF only) or individual); – the type of communication in which the safety
– key in or select on the DSC equipment keyboard (in message will be given (radiotelephony).
accordance with the DSC equipment manufacturer’s – transmit the DSC safety call.
instructions): Transmission of the safety message:
– specific area or 9-digit identity of the specific station, – tune the transmitter to the frequency or channel indicated
if appropriate; in the DSC safety call;
– the category of the call (urgency); – transmit the safety message as follows:
– the frequency or channel on which the urgency – “SECURITE,” repeated 3 times;
message will be transmitted; – “ALL STATIONS” or called station, repeated 3 times;
– the type of communication in which the urgency – “this is;”
message will be given (radiotelephony). – the 9-digit identity and the call sign or other
– transmit the DSC urgency call. identification of own ship;
Transmission of the urgency message: – the text of the safety message.
– tune the transmitter to the frequency or channel indicated 3.2 Reception of a safety message: Ships receiving a
in the DSC urgency call; DSC safety call announcing a safety message addressed to
– transmit the urgency message as follows: more than one station shall NOT acknowledge the receipt
– “PAN PAN,” repeated 3 times; of the DSC safety call, but should tune the radiotelephony
– “ALL STATIONS” or called station, repeated 3 times; receiver to the frequency indicated in the call and listen to
– “this is;” the safety message.
– the 9-digit identity and the call sign or other 4 PUBLIC CORRESPONDENCE:
identification of own ship; 4.1 DSC channels for public correspondence:
– the text of the urgency message. – 4.1.1 VHF: The VHF DSC channel 70 is used for DSC
2.2 Reception of an urgency message: Ships receiving for distress and safety purposes as well as for DSC for
a DSC urgency call announcing an urgency message public correspondence.
addressed to more than one station shall NOT acknowledge – 4.1.2 MF: International and national DSC channels
the receipt of the DSC call, but should tune the separate from the DSC distress and safety calling
radiotelephony receiver to the frequency indicated in the channel 2187.5 kHz are used for digital selective-calling
call and listen to the urgency message. on MF for public correspondence. Ships calling a coast
4 - 44
station by DSC on MF for public correspondence should It will normally rest with the ship to call again a little
preferably use the coast station’s national DSC channel. later in case the acknowledgment from the coast station
The international DSC channel for public indicates that the coast station is not able to receive the
correspondence may as a general rule be used between traffic immediately. In case the ship, in response to a call to
ships and coast stations of different nationality. The ships another ship, receives an acknowledgment indicating that
transmitting frequency is 2189.5 kHz, and the receiving the other ship is not able to receive the traffic immediately,
frequency is 2177 kHz. The frequency 2177 kHz is also it will normally rest with the called ship to transmit a call
used for DSC between ships for general communication. to the calling ship when ready to receive the traffic.
4.2 Transmission of a DSC call for public 5 TESTING THE EQUIPMENT USED FOR
correspondence to a coast station or another ship: A DISTRESS AND SAFETY:
DSC call for public correspondence to a coast station or Testing on the exclusive DSC distress and safety calling
another ship is transmitted as follows: frequency 2187.5 kHz should be avoided as far as possible
– tune the transmitter to the relevant DSC channel; by using other methods. Test calls should be transmitted by
– select the format for calling a specific station on the DSC the ship station and acknowledged by the called station.
equipment; Normally there would be no further communication
– key in or select on the DSC equipment keyboard (in between the two stations involved.
accordance with the DSC equipment manufacturer’s A VHF and MF test call to a station is transmitted as
instructions): follows:
– the 9-digit identity of the station to be called; – tune the transmitter to the DSC distress and safety
– the category of the call (routine); calling frequency (i.e., channel 70 and 2187.5 kHz);
– the type of subsequent communication (normally – key in or select the format for the test call on the DSC
radiotelephony); equipment in accordance with the DSC equipment
– a proposed working channel if calling another ship. A manufacturer’s instructions;
proposal for a working channel should NOT be – key in the 9-digit identity of the station to be called;
included in calls to a coast station; the coast station – transmit the DSC call after checking as far as possible
will in its DSC acknowledgment indicate a vacant that no calls are in progress on the frequency;
working channel; – wait for acknowledgment.
– transmit the DSC call.
4.3 Repeating a call: A DSC call for public 6 SPECIAL CONDITIONS AND PROCEDURES
correspondence may be repeated on the same or another FOR DSC COMMUNICATION ON HF:
DSC channel, if no acknowledgment is received within 5 General: The procedures for DSC communication on
minutes. Further call attempts should be delayed at least 15 HF are—with some additions described in 6.1 to 6.3
minutes, if acknowledgment is still not received. below—equal to the corresponding procedures for DSC
4.4 Acknowledgment of a received call and communications on MF/VHF. Due regard to the special
preparation for reception of the traffic: On receipt of a conditions described in 6.1 to 6.3 should be given when
DSC call from a coast station or another ship, a DSC making DSC communications on HF.
acknowledgment is transmitted as follows: 6.1 DISTRESS:
– tune the transmitter to the transmit frequency of the DSC 6.1.1 Transmission of DSC distress alert: DSC distress
channel on which the call was received; alert should be sent to coast stations - i.e., in A3 and A4 sea
– select the acknowledgment format on the DSC areas on HF - and on MF and/or VHF to other ships in the
equipment; vicinity. The DSC distress alert should as far as possible
– transmit an acknowledgment indicating whether the ship include the ship’s last known position and the time (in
is able to communicate as proposed in the call (type of UTC) it was valid. If the position and time is not inserted
communication and working frequency); automatically from the ship’s navigational equipment, it
– if able to communicate as indicated, tune the transmitter should be inserted manually.
and the radiotelephony receiver to the indicated working Ship-to-shore distress alert (Choice of HF band):
channel and prepare to receive the traffic. Propagation characteristics of HF radio waves for the
4.5 Reception of acknowledgment and further actual season and time of the day should be taken into
actions: When receiving an acknowledgment indicating account when choosing HF bands for transmission of DSC
that the called station is able to receive the traffic, prepare distress alert. As a general rule the DSC distress channel in
to transmit the traffic as follows: the 8 MHz maritime band (8414.5 kHz) may in many cases
– tune the transmitter and receiver to the indicated working be an appropriate first choice. Transmission of the DSC
channel; distress alert in more than one HF band will normally
– commence the communication on the working channel increase the probability of successful reception of the alert
by: by coast stations.
– the 9-digit identity or call sign or other identification DSC distress alert may be sent on a number of HF bands
of the called station; in two different ways:
– “this is;” – (1) either by transmitting the DSC distress alert on one
– the 9-digit identity or call sign or other identification HF band, and waiting a few minutes for receiving
of own ship. acknowledgment by a coast station;
4 - 45
if no acknowledgment is received within 3 minutes, the HF (kHz):

process is repeated by transmitting the DSC distress alert Telephony Telex
on another appropriate HF band etc.; 12290 12520
– (2) or by transmitting the DSC distress alert at a number
16420 16695
of HF bands with no, or only very short, pauses between
the calls, without waiting for acknowledgment between
the calls. MF (kHz):
It is recommended to follow procedure (1) in all cases, Telephony Telex
where time permits to do so; this will make it easier to 2182 2174.5
choose the appropriate HF band for commencement of the
subsequent communication with the coast station on the VHF:
corresponding distress traffic channel. Channel 16 (156.800 MHz)
Transmitting the DSC distress alert (see Note 1 below):
– tune the transmitter to the chosen HF DSC distress 6.1.3 Distress traffic: The procedures described in
channel (4207.5, 6312, 8414.5, 12577, 16804.5 kHz) section 1.3 are used when the distress traffic on MF/HF is
(see Note 2); carried out by radiotelephony.
– follow the instructions for keying in or selection of The following procedures shall be used in cases where
relevant information on the DSC equipment keyboard as the distress traffic on MF/HF is carried out by radiotelex:
described in section 1.1; – the forward error correcting (FEC) mode shall be used;
– transmit the DSC distress alert. – all messages shall be preceded by:
In special cases, for example in tropical zones, – at least one carriage return;
transmission of DSC distress alert on HF may, in addition – line feed;
to ship-to-shore alerting, also be useful for ship-to-ship – one letter shift;
alerting. – the distress signal “MAYDAY.”
NOTE 1: Ship-to-ship distress alert should normally be – the ship in distress should commence the distress telex
made on MF and/or VHF, using the procedures for traffic on the appropriate distress telex traffic channel as
transmission of DSC distress alert on MF/VHF described follows:
in section 1.1. – carriage return, line feed, letter shift;
NOTE 2: Some maritime HF transmitters shall be tuned – the distress signal “MAYDAY;”
to a frequency 1700 Hz lower than the DSC frequencies – “this is;”
given above in order to transmit the DSC distress alert on – the 9-digit identity and call sign or other identification
the correct frequency. of the ship;
6.1.2 Preparation for the subsequent distress traffic: – the ship’s position if not included in the DSC distress
After having transmitted the DSC distress alert on alert;
appropriate DSC distress channels (HF, MF and/or VHF), – the nature of distress;
prepare for the subsequent distress traffic by tuning the – any other information which might facilitate the
radiocommunication set(s) (HF, MF and/or VHF as rescue.
appropriate) to the corresponding distress traffic
channel(s). 6.1.4 Actions on reception of a DSC distress alert on
Where multiple frequency call attempts are transmitted HF from another ship: Ships receiving a DSC distress
the corresponding distress traffic frequency should be 8291 alert on HF from another ship shall not acknowledge the
kHz. alert, but should:
If method (2) described in section 6.1.1 has been used – watch for reception of a DSC distress acknowledgment
for transmission of DSC distress alert on a number of HF from a coast station;
bands: – while waiting for reception of a DSC distress
– take into account in which HF band(s) acknowledgment acknowledgment from a coast station:
has been successfully received from a coast station; prepare for reception of the subsequent distress
– if acknowledgments have been received on more than communication by tuning the HF radiocommunication
one HF band, commence the transmission of distress set (transmitter and receiver) to the relevant distress
traffic on one of these bands, but if no response is traffic channel in the same HF band in which the DSC
received from a coast station then the other bands should distress alert was received, observing the following
be used in turn. conditions:
The distress traffic frequencies are: – if radiotelephony mode was indicated in the DSC
distress alert, the HF radiocommunication set should
HF (kHz): be tuned to the radiotelephony distress traffic channel
Telephony Telex in the HF band concerned;
4125 4177.5 – if telex mode was indicated in the DSC distress alert,
6215 6268 the HF radiocommunication set should be tuned to the
8291 8376.5 radiotelex distress traffic channel in the HF band
concerned. Ships able to do so should additionally
4 - 46
watch the corresponding radiotelephony distress – tune the HF transmitter to the DSC distress channel in
channel; the chosen HF band;
– if the DSC distress alert was received on more than – key in or select call format for either geographical area
one HF band, the radiocommunication set should be call or individual call on the DSC equipment, as
tuned to the relevant distress traffic channel in the HF appropriate;
band considered to be the best one in the actual case. If – in case of area call, key in specification of the relevant
the DSC distress alert was received successfully on the geographical area;
8 MHz band, this band may in many cases be an – follow the instructions for keying in or selection of
appropriate first choice; relevant information on the DSC equipment keyboard as
– if no distress traffic is received on the HF channel described in section 2.1, including type of
within 1 to 2 minutes, tune the HF communication in which the urgency message will be
radiocommunication set to the relevant distress traffic transmitted (radiotelephony or radiotelex);
channel in another HF band deemed appropriate in the – transmit the DSC call; and
actual case; – if the DSC call is addressed to a specific coast station,
– if no DSC distress acknowledgment is received from a wait for DSC acknowledgment from the coast station. If
coast station within 5 minutes, and no distress acknowledgment is not received within a few minutes,
communication is observed going on between a coast repeat the DSC call on another HF frequency deemed
station and the ship in distress: appropriate.
– inform a Rescue Coordination Center (RCC) via 6.2.2 Transmission of the urgency message and
appropriate radiocommunications means; subsequent action:
– transmit a DSC distress relay call. – tune the HF transmitter to the distress traffic channel
6.1.5 Transmission of DSC distress relay call: In case (telephony or telex) indicated in the DSC announcement;
it is considered appropriate to transmit a DSC distress relay – if the urgency message is to be transmitted using
call: radiotelephony, follow the procedure described in section
– distress relay calls on HF should be initiated manually; 2.1;
– tune the transmitter(s) to the relevant DSC distress – if the urgency message is to be transmitted by radiotelex,
channel, following the procedures described in section the following procedure shall be used:
6.1.1 above (except the call is sent manually as a single – use the forward error correcting (FEC) mode unless
call on a single frequency); the message is addressed to a single station whose
– follow the instructions for keying in or selection of call radiotelex identity number is known;
format and relevant information on the DSC equipment – commence the telex message by:
keyboard as described in section 1.4; – at least one carriage return, line feed, one letter shift;
– transmit the DSC distress relay call. – the urgency signal “PAN PAN;”
6.1.6 Acknowledgment of a HF DSC distress relay – “this is;”
call received from a coast station: Ships receiving a DSC – the 9-digit identity of the ship and the call sign or
distress relay call from a coast station on HF, addressed to other identification of the ship;
all ships within a specified area, should NOT acknowledge – the text of the urgency message.
the receipt of the relay alert by DSC, but by radiotelephony Announcement and transmission of urgency messages
on the telephony distress traffic channel in the same addressed to all HF equipped ships within a specified area
band(s) in which the DSC distress relay call was received. may be repeated on a number of HF bands as deemed
6.2 URGENCY: appropriate in the actual situation.
Transmission of urgency messages on HF should 6.3 SAFETY:
normally be addressed: The procedures for transmission of DSC safety
– either to all ships within a specified geographical area; announcement and for transmission of the safety message
– or to a specific coast station. are the same as for urgency messages, described in section
Announcement of the urgency message is carried out by 6.2, except that:
transmission of a DSC call with category urgency on the – in the DSC announcement, the category SAFETY shall
appropriate DSC distress channel. The transmission of the be used;
urgency message itself on HF is carried out by – in the safety message, the safety signal “SECURITE”
radiotelephony or radiotelex on the appropriate distress shall be used instead of the urgency signal “PAN PAN.”
traffic channel in the same band in which the DSC
announcement was transmitted. 400L. Use of GMDSS Equipment for Routine
6.2.1 Transmission of DSC announcement of an Telecommunications
urgency message on HF:
– choose the HF band considered to be the most GMDSS telecommunications equipment should not be
appropriate, taking into account propagation reserved for emergency use only. The IMO has issued
characteristics for HF radio waves at the actual season COMSAR/Circ.17 (dated 9 March 1998) which
and time of the day; the 8 MHz band may in many cases recommends and encourages mariners to use that
be an appropriate first choice; equipment for routine as well as safety
4 - 47
telecommunications. The following recommendation is =Master, NAME, CALL SIGN, DSC NUMBER, DATE,
extracted from Circ.17: TIME UTC
Use of GMDSS equipment for transmission of general
radiocommunications is one of the functional requirements –MF
specified in SOLAS chapter IV, regulation 4. Regular use –Switch off the transmitter immediately (this
of GMDSS equipment helps to develop operator applies when the false alert is detected during
competency and ensure equipment availability. If ships use transmission);
other radiocommunication systems for the bulk of their –Switch equipment on and tune for radiotelephony
business communications, they should adopt a regular transmission on 2182 kHz;
program of sending selected traffic or test messages via –Make broadcast to “All Stations” giving name of
GMDSS equipment to ensure operator competency and vessel, call sign and DSC number, and cancel the
equipment availability and to help reduce the incidence of false distress alert.
false alerts. This policy extends to all GMDSS equipment Example:
suites including Digital Selective Calling (DSC) on VHF, All Stations, All Stations, All Stations,
MF and HF, to the Inmarsat-A, -B and -C systems, and to This is NAME, CALL SIGN, DSC NUMBER,
any duplicated VHF and long-range communications POSITION.
facilities. Cancel my distress alert of DATE, TIME UTC.
=Master, NAME, CALL SIGN, DSC NUMBER, DATE,
400M. Instructions for Canceling Inadvertent TIME UTC
Distress Alerts
–HF:
A false alert is any distress transmitted for any reason –As for MF but the alert must be canceled on all the
when a real distress situation does not actually exist. Most frequency bands in which it was transmitted: the
such alerts are inadvertent and can be traced to equipment transmitter should be tuned consecutively to the
problems and human error (caused by improper use of radiotelephony distress frequencies in the 4, 6, 8,
GMDSS equipment). A few, however, are deliberately 12 and 16 MHz bands, as necessary.
transmitted as a hoax, made easier by GMDSS equipment
that is not properly registered. Many are from non-GMDSS – INMARSAT-C:
sources, especially in the 121.5 MHz frequency band. – Notify the appropriate Rescue Coordination Center
False alerts obstruct efficient and effective SAR services (RCC) to cancel the alert by sending a distress priority
and are detrimental because they: message via the same CES through which the false
– Cause delays which may cost lives and prolong or distress alert was sent.
worsen human suffering. Example:
– Adversely affect mariner safety. This is NAME, CALL SIGN, IDENTITY NUMBER,
– Waste limited resources. POSITION.
– Erode the confidence of both mariners and SAR Cancel my Inmarsat-C distress alert of DATE, TIME
personnel. UTC.
– Divert SAR facilities, making them less available should =Master +
a real distress situation arise.
– Congest and drive up the costs of communications. – EPIRBS:
– If, for any reason, an EPIRB is activated accidentally,
The following instructions, extracted from IMO the ship should contact the nearest coast station or an
Resolution A.814(19), are for canceling an inadvertent appropriate coast earth station or RCC and cancel the
distress alert: distress alert.
NOTE: Keep the EPIRB activated until an appropriate
– DIGITAL SELECTIVE CALLING: RCC can be contacted to cancel the alert. (This reduces
– VHF: incomplete alerts and uncertainty associated with why an
– Switch off the transmitter immediately (this EPIRB signal ceased.)
applies when the false alert is detected during Notwithstanding the above, a ship may use any means
transmission); available to them to inform the appropriate authorities that
– Switch equipment on and set to Channel 16; a false alert has been transmitted and should be canceled.
– Make broadcast to “All Stations” giving name of No action will normally be taken against any ship or
vessel, call sign and DSC number, and cancel the mariner for reporting and canceling a false distress alert.
false distress alert. However, in view of the serious consequences of false
Example: alerts, and the strict ban on their transmission,
All Stations, All Stations, All Stations Governments may prosecute in cases of repeated violation.
This is NAME, CALL SIGN, DSC NUMBER, The following guidelines, extracted from IMO
POSITION. Resolution A.814(19), are recommended for reducing the
Cancel my distress alert of DATE, TIME UTC. chance of a false distress alert aboard ship:
4 - 48
– Ensure that all GMDSS certificated personnel – Ensure that satellite EPIRBs are carefully installed in
responsible for sending a distress alert have been accordance with the manufacturers’ instructions and
instructed about, and are competent to operate, the using qualified personnel (sometimes satellite EPIRBs
particular radio equipment on the ship. are damaged or broken due to improper handling or
– Ensure that the person(s) responsible for communication installation. They must be installed in a location that will
during distress incidents give the necessary instructions enable them to float free and automatically activate if the
and information to all crew members on how to use ship sinks. Care must be taken to ensure that they are not
GMDSS equipment to send a distress alert. tampered with or accidently activated. If the coding has
– Ensure that as part of each abandon ship drill, instruction to be changed or the batteries serviced, manufacturers’
is given on how emergency equipment should be used to requirements must be strictly followed. There have been
provide GMDSS functions. cases where EPIRB lanyards were attached to the ship so
– Ensure that GMDSS equipment testing is only that the EPIRB could not float free; lanyards are only to
undertaken under the supervision of the person be used by survivors for securing the EPIRB to a survival
responsible for communications during distress craft or person in the water).
incidents. – Ensure that EPIRBs are not activated if assistance is
– Ensure that GMDSS equipment testing or drills are never already immediately available (EPIRBs are intended to
allowed to cause false distress alerts. call for assistance if the ship is unable to obtain help by
– Ensure that coded identities of satellite EPIRBs, which other means, and to provide position information and
are used by SAR personnel responding to emergencies, homing signals for SAR units).
are properly registered in a database accessible 24 hours – Ensure that, if a distress alert has been accidently
a day or automatically provided to SAR authorities transmitted, the ship makes every reasonable attempt to
(Masters should confirm that their EPIRBs have been communicate with the RCC by any means to cancel the
registered with such a database, to help SAR services false distress alert using the instructions given above.
identify the ship in the event of distress and rapidly – Ensure that, if possible, after emergency use, the EPIRB
obtain other information which will enable them to is retrieved and deactivated.
respond appropriately (See sec. 400F.)). – Ensure that when an EPIRB is damaged and needs to be
– Ensure that EPIRB, Inmarsat and DSC registration data disposed of, if a ship is sold for scrap, or if for any other
is immediately updated if there is any change in reason a satellite EPIRB will no longer be used, the
information relating to the ship such as owner, name or satellite EPIRB is made inoperable, either by removing
flag, and that the necessary action is taken to reprogram its battery and, if possible, returning it to the
the ship’s new data in the GMDSS equipment concerned. manufacturer, or by demolishing it.
– Ensure that, for new ships, positions for installing NOTE: If the EPIRB is returned to the manufacturer, it
EPIRBs are considered at the earliest stage of ship should be wrapped in tin foil to prevent transmission of
design and construction. signals during shipment.
4 - 49
ACTIONS BY SHIPS UPON RECEPTION OF VHF / MF DSC DISTRESS ALERT

4 - 51
REMARKS:
Note 1: Appropriate or relevant RCC and/or Coast Station shall be informed accordingly. If further DSC alerts are received from the same source and the
ship in distress is beyond doubt in the vicinity, a DSC acknowledgment may, after consultation with an RCC or Coast Station, be sent to terminate
the call.
Note 2: In no case is a ship permitted to transmit a DSC distress relay call on receipt of a DSC distress alert on either VHF Channel 70 or MF Channel
2187.5 kHz.
CS = Coast Station RCC = Rescue Coordination Center

ACTIONS BY SHIPS UPON RECEPTION OF HF DSC DISTRESS ALERT

4 - 53
REMARKS:
Note 1: If it is clear the ship or persons in distress are not in the vicinity and/or other crafts are better placed to assist, superflous communications which
could interfere with search and rescue activities are to be avoided. Details should be recorded in the appropriate logbook.
Note 2: The ship should establish communications with the station controlling the distress as directed and render such assistance as required and
appropriate.
Note 3: Distress relay calls should be initiated manually.
CS = Coast Station RCC = Rescue Coordination Center

LIST OF OPERATIONAL VHF DSC COAST STATIONS FOR SEA AREAS A1

VHF DSC Coast Station

NAV/MET Country Name MMSI Position Range Associated
Area (NM) RCC
I Belgium Antwerpen 002050485 51-13N 04-23E 25 Oostende
Oostende 002050480 51-11N 02-48E 25
Denmark Lyngby 002191000 - - SOK, Aarhus
København 55-41N 12-36E 29
Vejby 56-04N 12-07E 30
Roesnaes 55-44N 10-56E 35
Ånholt 56-42N 11-35E 28
Fornaes 56-26N 10-56E 32
Vejle 55-40N 09-30E 42
Als 54-57N 09-33E 41
Svendborg 55-01N 10-37E 20
Karleby 54-52N 11-11E 36
Mern 55-03N 11-59E 45
Aarsballe 55-08N 14-52E 42
Laesoe 57-17N 11-03E 34
Frejlev 57-00N 09-49E 44
Blåvand 55-33N 08-06E 33
Skagen 57-44N 10-34E 29
Hirtshals 57-31N 09-57E 31
Hanstholm 57-06N 08-39E 34
Bovbjerg 56-31N 08-10E 34
Torshavn (Færoes) 002311000 - - MRCC Torshavn
Torshavn 62-01N 06-49W 56
Fugloy 62-20N 06-19W 68
Mykines 62-06N 07-35W 64
Suderoy 61-25N 06-44W 57
Estonia Tallinn 002761000 59-24N 24-40E 20 MRCC Tallinn
Toila 59-25N 27-31E 30
Eisma 59-33N 26-17E 30
Aabla 59-35N 25-31E 30
Merevälja 59-30N 24-51E 30
Suurupi 59-28N 24-23E 30
Dirhami 59-12N 23-30E 30
Köpu 58-55N 22-12E 35
Orissaare 58-34N 23-04E 35
Undva 58-31N 21-56E 30
Torgu 57-59N 22-05E 28
Ruhnu 57-48N 23-15E 28
Töstamaa 58-18N 23-59E 30
Finland Turku 002300230 - - MRCC Turku
Kemi 002303000 65-49N 24-32E 30 MRSC Vaasa
Hailuoto 65-02N 24-36E 27
4 - 55

Area (NM) RCC
I Finland (cont.) Kalajoki 002303000 64-18N 24-11E 47 MRSC Vaasa
Kokkola 63-50N 23-09E 34
Raippaluoto 63-22N 21-19E 32
Kristiinankaupunki 002301000 62-16N 21-24E 36 MRCC Turku
Pori 61-36N 21-27E 16
Rauma 61-08N 21-33E 28
Uusikaupunki 60-49N 21-26E 32
Geta 60-23N 19-51E 38
Brandö 60-25N 21-03E 25
Järsö 60-01N 20-00E 36
Korppoo 60-10N 21-33E 30
Naantali 60-27N 22-03E 32
Utö 002302000 59-47N 21-22E 23 MRSC Helsinki
Hanko 59-50N 22-56E 26
Porkkala 59-59N 24-26E 30
Santahamina/Helsinki 60-09N 25-02E 30
Sondby 60-16N 25-51E 26
Kotka 60-29N 26-53E 29
Virolahti 60-36N 27-50E 32
France Gris Nez (CROSS) 002275100 50-52N 01-35E 23 MRCC Gris Nez
Dunkerque 51-03N 02-21E 22
Saint Frieux 50-36N 01-38E 38
L’Ailly 49-55N 00-57E 28
Jobourg (CROSS) 002275200 49-41N 01-54W 42 MRCC Jobourg
Antifer 49-41N 00-10E 33
Ver-sur-Mer 49-20N 00-31W 27
Gatteville 49-42N 01-16W 26
Granville 48-50N 01-37W 26
Roches Douvres 49-06N 02-49W 24
Corsen (CROSS) 002275300 48-25N 04-47W 27 MRCC Corsen
Cap Frehel 48-41N 02-19W 28
Ile de Batz 48-45N 04-01W 27
Stiff Ouessant 48-28N 05-03W 34
Bodic 48-48N 03-05W 25
Pointe du Raz 48-02N 04-44W 24
Germany Bremen Rescue Radio 002111240 53-05N 08-48E 25 MRCC Bremen
Rügen 54-21N 13-45E 27
Arkona 54-35N 13-37E 31
Darss 54-24N 12-27E 30
Rostock 54-10N 12-06E 33
Kiel 54-18N 10-07E 37
Lübeck 54-13N 10-43E 46
Flensburg 54-44N 09-30E 29
Norddeich 53-34N 07-06E 24
4 - 56

Area (NM) RCC
I Germany (cont.) Cuxhaven 002111240 53-50N 08-39E 24 MRCC Bremen
Helgoland 54-11N 07-53E 33
Sylt 54-55N 08-18E 28
Eiderstedt 54-20N 08-47E 24
Hamburg 53-33N 09-58E 44
Ireland MRCC Dublin 002500300 - - MRCC Dublin
Dublin 53-23N 06-04W 40
Carlingford 54-04N 06-19W 40
Wicklow Head 52-58N 06-00W 30
Rosslare 52-19N 06-34W 44
Mine Head 52-00N 07-35W 30
MRSC Valentia 002500200 - - MRSC Valentia
Cork 51-51N 08-29W 40
Bantry 51-38N 10-00W 60
Valentia 51-52N 10-21W 54
Shannon 52-31N 09-36W 50
MRSC Malin Head 002500100 - - MRSC Malin Head
Clifden 53-30N 09-56W 50
Belmullet 54-16N 10-03W 25
Glen Head 54-44N 08-40W 47
Malin Head 55-22N 07-16W 49
Latvia Riga Rescue Radio 002750100 57-02N 24-05E 20 MRCC Riga
Vitrupe 57-36N 24-23E 25
Mersrags 57-22N 23-07E 25
Kolka 57-45N 22-35E 20
Jaunupe 57-32N 21-41E 20
Uzava 57-13N 21-26E 20
Akmenrags 56-50N 21-03E 20
Jurmalciems 56-18N 20-59E 20
Lithuania Klaipeda Rescue 002770330 55-43N 21-06E 18 MRCC Klaipeda
Nida 55-18N 20-59E 24
Shventoji 56-01N 21-05E 20
Netherlands Netherlands Coast Guard 002442000 - - JRCC Den Helder
Woensdrecht 51-26N 04-20E 25
Westkappelle 51-32N 03-27E 25
Renesse 51-44N 03-49E 25
Scheveningen 52-06N 04-15E 25
Schoorl 52-43N 04-39E 25
Den Helder 52-57N 04-47E 25
West Terschelling 53-21N 05-13E 25
Schiermonnikoog 53-29N 06-09E 25
Appingedam 53-20N 06-52E 25
Kornwerderzand 53-04N 05-20E 25
4 - 57

Area (NM) RCC
I Netherlands Hoorn 002442000 52-39N 05-06E 25 JRCC Den Helder
(cont.) Wezep 52-27N 06-00E 25
Norway Tjøme 002570100 - - MRCC Stavanger
Halden 59-11N 11-26E 53
Oslo 59-59N 10-40E 62
Drammen 59-40N 10-26E 24
Tjøme 59-05N 10-25E 30
Porsgrunn 59-14N 09-42E 66
Risør 58-43N 09-12E 35
Arendal 58-27N 08-45E 36
Kristiansand 58-04N 07-59E 36
Rogaland 002570300 - - MRCC Stavanger
Lindesnes 58-01N 07-04E 40
Farsund 58-04N 06-45E 29
Storefjell 58-09N 06-43E 52
Bjerkreim 58-38N 05-58E 66
Stavanger 58-56N 05-43E 40
Bokn 59-13N 05-26E 50
Haugesund 59-25N 05-20E 47
Valhall (Rig) 56-17N 03-24E 30
Ekofisk (Rig) 56-32N 03-13E 30
Ula (Rig) 57-07N 02-51E 30
Draupner (Rig) 58-11N 02-28E 30
Sleipner A (Rig) 58-22N 01-54E 30
Stord 59-52N 05-30E 74
Sotra 60-19N 05-07E 53
Bergen 60-25N 05-22E 65
Lindas 60-35N 05-20E 59
Grimo 60-24N 06-40E 69
Oseberg (Rig) 60-30N 02-50E 30
Florø 002570500 - - MRCC Stavanger
Gulen 61-02N 05-09E 73
Sogndal 61-10N 07-07E 93
Kinn 61-34N 04-46E 52
Bremanger 61-52N 05-00E 74
Raudeberg 62-00N 05-09E 38
Sagtennene 61-54N 06-07E 85
Snorre (Rig) 61-27N 02-09E 31
Gullfaks (Rig) 61-11N 02-11E 30
Nerlandshorn 62-21N 05-33E 59
Hjørunganes 62-21N 06-07E 19
Aksla 62-29N 06-12E 41
Gamlemsveten 62-35N 06-19E 80
Orskogfjellet 62-31N 06-52E 69
4 - 58

Area (NM) RCC
I Norway (cont.) Hellesylt 002570500 62-08N 06-56E 42 MRCC Stavanger
Geiranger 62-07N 07-10E 57
Molde 62-45N 07-08E 59
Reinsfjell 62-57N 07-56E 84
Kristiansund 63-07N 07-42E 34
Litlefonni 63-23N 08-43E 56
Forbordsfjell 63-32N 10-54E 66
Mosvik 63-46N 10-58E 55
Kopparen 63-48N 09-45E 64
Yttervåg 64-18N 10-18E 34
Namsos 64-27N 11-32E 58
Rørvik 64-53N 11-14E 43
Draugen (Rig) 64-21N 07-47E 30
Åsgård B (Rig) 65-07N 06-47E 30
Heidrun (Rig) 65-20N 07-19E 30
Bodø 002570700 - - MRCC Bodø
Vega 65-38N 11-54E 75
Horva 66-01N 12-49E 57
Mo i Rana 66-12N 13-45E 71
Traenfjord 66-32N 12-49E 53
Meløy 66-51N 13-38E 50
Rønvikfjell/Bodø 67-18N 14-27E 41
Fornesfjell 67-26N 15-27E 68
Værøy 67-40N 12-38E 59
Steigen 67-50N 15-00E 77
Fredvang 68-06N 13-11E 21
Hagskaret 68-10N 13-42E 36
Kvalnes 68-21N 13-58E 40
Raften/Svolvaer 68-24N 15-07E 18
Storheia/Hadsel 68-33N 14-53E 61
Myre/Vesteralen 68-57N 15-01E 30
Stamnes 68-49N 15-29E 13
Andenes 69-17N 16-01E 54
Lødingen 68-24N 15-58E 13
Harstad 68-48N 16-31E 36
Veggen/Narvik 68-28N 17-10E 48
Kistefjell 69-18N 18-08E 85
Tromsø 69-39N 18-57E 36
Tønsnes 69-43N 19-08E 47
Hillesoy 69-39N 18-00E 41
Bjørnøya 74-31N 19-01E 40
Vardø 002570800 - - MRCC Bodø
Torsvag 70-15N 19-30E 23
Trolltind 70-04N 20-26E 78
4 - 59

Area (NM) RCC
I Norway (cont.) Skjervoy 002570800 70-01N 20-59E 37 MRCC Bodø
Helligfjell 70-07N 22-56E 63
Fuglen 70-39N 21-58E 55
Tyven 70-38N 23-42E 57
Havoysund 71-00N 24-36E 49
Honningsvåg 70-59N 25-54E 56
Oksen 70-58N 27-21E 51
Mehamn 71-03N 28-07E 49
Berlevåg 70-52N 29-05E 40
Tana 70-28N 28-13E 65
Båtsfjord 70-40N 29-42E 49
Vardø 70-20N 31-02E 40
Varangefjord 70-05N 29-49E 41
Kirkenes 69-45N 30-08E 44
Svalbard 002570900 - - MRCC Bodø
Isfjord 78-02N 13-40E 23
Longyearbyen 78-15N 15-24E 21
Kongsvegpasset 78-45N 13-30E 78
Poland Witowo 002610210 - - MRCC Gdynia
Swinoujscie 53-55N 14-15E 20
Grzywacz 53-57N 14-30E 35
Kolowo 53-20N 14-41E 40
Kolorzeg 54-11N 15-33E 25
Barzowice 54-28N 16-30E 30
Rowakol 54-39N 17-13E 35
Rozewie 54-50N 18-20E 25
Oksywie 54-33N 18-32E 30
Krynica Morska 54-24N 19-30E 20
Russian Saint Petersburg 002733700 59-53N 30-13E 27 MRCC Saint
Federation Primorsk 60-20N 28-43E 30 Petersburg
Vyborg 002734415 60-42N 28-43E 17.5
Kaliningrad 002734417 54-58N 19-59E 26 MRSC Kaliningrad
Murmansk 002734420 68-58N 33-01E 18 MRCC Murmansk
Arkhangel’sk 002734414 64-32N 40-32E 25.6 MRSC
Mudyug 64-51N 40-17E 24.5 Arkhangel’sk
Sweden Göteborg 002653000 - - MRCC Göteborg
Umeå 63-50N 19-49E 59
Väddö 59-58N 18-50E 37
Svenska Högarna 59-27N 19-30E 21
Stockholm 59-18N 18-10E 50
Skellefteå 64-46N 20-57E 49
Seskarö 65-44N 23-44E 24
Luleå 65-32N 21-55E 36
Mjällom 62-59N 18-23E 48
4 - 60

Area (NM) RCC
I Sweden (cont.) Härnösand 002653000 62-36N 17-55E 40 MRCC Göteborg
Sundsvall 62-24N 17-28E 40
Hudiksvall 61-42N 16-51E 60
Gävle 60-38N 17-08E 42
Öregrund 60-30N 18-24E 30
Västerås 59-38N 16-24E 45
Södertälje 59-13N 17-37E 35
Torö 58-49N 17-51E 31
Norrköping 58-40N 16-28E 49
Gotska Sandön 58-23N 19-14E 27
Fårö 57-52N 19-00E 30
Visby 57-35N 18-22E 48
Hoburgen 56-56N 18-13E 30
Västervik 57-43N 16-26E 50
Borgholm 56-51N 16-42E 30
Ölands Södra 56-14N 16-27E 28
Karlskrona 56-14N 15-39E 32
Kivik 55-40N 14-09E 44
Trelleborg 55-28N 13-16E 36
Helsingborg 56-02N 12-41E 32
Falkenberg 56-50N 12-41E 39
Göteborg 57-41N 12-03E 47
Hunnebostrand 58-25N 11-25E 34
Strömstad 58-55N 11-10E 30
Vänersborg 58-19N 12-16E 27
Kinnekulle 58-36N 13-24E 48
Karlsborg (Vättern) 58-40N 14-34E 38
United Falmouth 002320014 50-08N 05-07W 26 MRCC Falmouth
Kingdom Lizard 49-59N 05-12W 27
Scillies 49-56N 06-18W 26
Lands End 50-08N 05-39W 44
St. Ives 50-13N 05-28W 19
Trevose Head 50-33N 05-02W 30
Bude 50-49N 04-33W 20
Brixham 002320013 - - MRSC Brixham
Rame Head 50-19W 04-13W 30
East Prawle 50-13N 03-42W 34
Dartmouth 50-21N 03-35W 31
Berry Head 50-24N 03-29W 27
Portland 002320012 - - MRSC Portland
Grove 50-33N 02-25W 33
Bincleaves 50-36N 02-27W 16
Hengistbury Head 50-43N 01-46W 21
Beer Head 50-41N 03-06W 35
4 - 61

Area (NM) RCC
I United Solent 002320011 - - MRSC Solent
Kingdom (cont.) Boniface (Tx) 50-36N 01-12W 44
Stenbury (Rx) 50-37N 01-14W 44
Selsey Bill 50-44N 00-48W 19
Newhaven 50-47N 00-03W 27
Guernsey (Channel 002320064 49-26N 02-36W 50
Islands)
Jersey Radio (Channel 002320060 49-11N 02-14W 35
Islands)
Dover (Rx) 002320010 51-08N 01-21E 33 MRCC Dover
West Hougham (Tx) 51-07N 01-15E 45
Fairlight 50-52N 00-40E 34
North Foreland 51-22N 01-25E 25
Thames 002320009 51-52N 01-16E 18 MRSC Thames
Shoeburyness 51-31N 00-46E 17
Bradwell 51-44N 00-53E 16
Bawdsey 52-00N 01-25E 24
Yarmouth 002320008 52-36N 01-42E 20 MRCC Yarmouth
Lowestoft 52-29N 01-42E 19
Trimingham 52-55N 01-20E 30
Langham 52-57N 00-57E 24
Skegness 53-09N 00-21E 18
Trusthorpe 53-19N 00-16E 23
Humber 002320007 - - MRSC Humber
Easington 53-39N 00-06E 25
Flamborough 54-08N 00-06W 26
Whitby 54-29N 00-36W 30
Hartlepool 54-42N 01-10W 19
Cullercoats 55-04N 01-28W 25
Newton 55-31N 01-37W 24
Forth 002320005 56-17N 02-35W 21 MRSC Forth
St. Abbs 55-54N 02-12W 42
Craigkelly 56-04N 03-14W 49
Inverbervie 56-51N 02-16W 37
Aberdeen 002320004 - - MRCC Aberdeen
Gregness 57-08N 02-03W 25
Peterhead 57-31N 01-46W 19
Windy Head 57-39N 02-14W 45
Banff 57-38N 02-31W 33
Thrumster 58-24N 03-07W 39
Rosemarkie 57-38N 04-05W 43
Foyers 57-14N 04-31W 44
Noss Head 58-29N 03-03W 22
Dunnet Head 58-40N 03-22W 30
4 - 62

Area (NM) RCC
I United Ben Tongue 002320004 58-30N 04-24W 50 MRCC Aberdeen
Kingdom (cont.) Durness 58-34N 04-44W 26
Shetland 002320001 60-09N 01-08W 26 MRSC Shetland
Wideford Hill 58-59N 03-01W 44
Compass Head 59-52N 01-16W 33
Fitful Head 59-54N 01-23W 47
Collafirth Hill 60-32N 01-23W 46
Saxa Vord 60-50N 00-50W 44
Stornoway 002320024 - - MRSC Stornoway
Butt of Lewis 58-28N 06-14W 24
Forsnaval 58-13N 07-00W 44
Port Naguran 58-15N 06-10W 23
Rodel 57-45N 06-57W 29
Clettraval 57-37N 07-27W 37
Scoval 57-27N 06-42W 48
Skriaig 57-23N 06-14W 57
Barra 57-01N 07-30W 30
Melvaig 57-51N 05-47W 48
Arisaig 56-55N 05-50W 35
Clyde 002320022 55-58N 04-48W 20 MRCC Clyde
Pulpitt Hill 56-19N 05-21W 35
Torosay 56-27N 05-44W 58
Glengorm 56-38N 06-08W 47
Tiree 56-30N 06-57W 35
Law Hill 55-42N 04-50W 41
Rhu Stafnish 55-22N 05-32W 44
Kilchiaran 55-46N 06-27W 37
South Knapdale 55-55N 05-28W 62
Belfast 002320021 - - MRSC Belfast
Orlock Head 54-40N 05-35W 23
Slieve Martin 54-06N 06-10W 61
Black Mountain 54-35N 06-01W 62
West Torr 55-12N 06-05W 33
Limavady 55-06N 06-53W 53
Liverpool 002320019 53-30N 03-03W 17 MRSC Liverpool
Moel-Y-Parc 53-13N 03-19W 57
Langthwaitet 54-02N 02-46W 37.5
Snaefell 54-16N 04-28W 70
Spanish Head 54-04N 04-46W 37
Caldbeck 54-44N 03-03W 65
Holyhead 002320018 53-19N 04-38W 17 MRSC Holyhead
Rhiw 52-50N 04-38W 51
South Stack 53-18N 04-42W 38
Great Orme 53-20N 03-51W 43
4 - 63

Area (NM) RCC
I United Milford Haven 002320017 - - MRSC Milford
Kingdom (cont.) Tenby 51-42N 04-41W 29 Haven
St. Ann’s Head 51-40N 05-11W 33
Dinas Head 52-00N 04-54W 43
Blaenplwyf 52-22N 04-06W 50
Swansea 002320016 - - MRCC Swansea
Gower 51-34N 04-17W 27
Mumbles Hill 51-34N 03-59W 29
St. Hilary 51-27N 03-24W 50
Severn Bridge 51-37N 02-39W 33
Combe Martin 51-10N 04-03W 47
Ilfracombe 51-13N 04-05W 27
Hartland Point 51-01N 04-31W 35
II Benin Cotonou 006100001 06-21N 02-26E 29
France Etel (CROSS) 002275000 47-40N 03-12W 26 MRCC Etel
Penmarc’h 47-48N 04-22W 28
Groix 47-39N 03-30W 24
Belle Ile 47-19N 03-14W 27
Kerrouault 47-27N 02-30W 33
Armandeche 46-42N 01-55W 21
Ile D’Yeu 46-43N 02-23W 24
Soulac 45-32N 01-06W 24
Chassiron 46-03N 01-25W 22
Cap Ferret 44-38N 01-15W 22
Contis 43-48N 01-18W 23
Hourtin 45-09N 01-10W 23
Biarritz 43-32N 01-32W 26
Ghana Tema 006270000 - - Harbor Master’s
Winneba 05-21N 00-37W 60 Office Accra
Aflao 06-07N 01-11W 60
Tema 05-38N 00-00 60
Cape Coast 05-07N 01-15W 60
Half Assini 05-03N 02-53W 60
Takoradi 04-54N 01-45W 60
Axim 04-52N 02-14W 60
Ada 05-47N 00-38W 60
Spain Bilbao (CCR) 002241021 - - MRCC Bilbao
Pasajes 43-17N 01-55W 35
Bilbao 43-16N 03-02W 35
Santander 43-25N 03-36W 35
Cabo Penas 43-26N 05-35W 35
Navia 43-25N 06-50W 35
4 - 64

Area (NM) RCC
II Spain (cont.) MRCC Bilbao* 002240996 43-21N 03-02W 30 MRCC Bilbao
MRSC Santander* 002241009 43-28N 03-43W 30 MRSC Santander
MRCC Gijon* 002240997 43-34N 05-42W 30 MRCC Gijon
MRSC Coruna* 002240992 - - MRSC Coruna
Cabo Priorino 43-28N 08-20W 30
Coruna 43-22N 08-23W 30
Coruna (CCR) 002241022 - -
Cabo Ortegal 43-35N 07-47W 35 MRCC Finisterre
Coruna 43-10N 08-18W 35 MRSC Coruna
Vigo 42-10N 08-41W 35 MRSC Vigo
La Guardia 41-53N 08-52W 35 MRCC Finisterre
Finisterre 42-55N 09-17W 35
MRCC Finisterre* 002240993 - -
Monte Beo 43-20N 08-50W 40
Finisterre 42-42N 08-59W 40
Monte Xastas 43-02N 09-16W 40
Monte Taume 42-36N 09-03W 40
MRSC Vigo* 002240998 42-14N 08-43W 30 MRSC Vigo
MRSC Huelva* 002241012 37-14N 06-57W 30 MRSC Huelva
MRSC Cadiz* 002241011 36-32N 06-18W 30 MRSC Cadiz
MRCC Tarifa* 002240994 - - MRCC Tarifa
Cape Trafalgar 36-12N 06-01W 30
Tarifa 36-01N 05-35W 30
Punta Almina 35-54N 05-17W 30
MRSC Algeciras* 002241001 36-07N 05-26W 30 MRSC Algeciras
Malaga (CCR) 002241023 - - MRCC Tarifa
Huelva 37-13N 07-07W 35 MRSC Huelva
Cadiz 36-32N 06-18W 35 MRSC Cadiz
Tarifa 36-03N 05-33W 35 MRCC Tarifa
Tenerife (CCR) 002241025 - -
Arrecife 29-08N 13-31W 35 MRCC Las Palmas
Fuerteventura 28-33N 13-55W 35
Las Palmas 27-58N 15-33W 35
Gomera 28-06N 17-06W 35
Hierro 27-48N 17-55W 35 MRCC Tenerife
Tenerife 28-27N 16-23W 35
La Palma 28-39N 17-50W 35
MRCC Tenerife* 002241007 28-29N 16-14W 30
MRCC Las Palmas* 002240995 - - MRCC Las Palmas
Las Palmas 28-09N 15-25W 30
La Isleta 28-10N 15-25W 30
*NOTE: The primary responsibility for the receipt of VHF DSC distress alerts for Spain is carried out via the Coast Radio
Stations. VHF DSC facilities maintained at various MRCCs and MRSCs are only complementary to the Coast Radio Stations
network.
4 - 65

Area (NM) RCC
III Bulgaria Varna 002070810 43-15N 27-57E 52 MRCC Varna
Bourgas 42-29N 27-28E 45
Croatia Split 002380100 - - MRCC Rijeka
Savudrija 45-29N 13-29E 30
Ucka 45-17N 14-12E 90
Kamenjak 44-46N 14-47E 50
Susak 44-31N 14-18E 50
Celavac 44-16N 15-47E 80
Ugljan 44-04N 15-10E 40
Labistica 43-35N 16-13E 80
Vidova Gora 43-17N 16-37E 50
Hum (Otok Vis) 43-01N 16-07E 70
Uljenje 42-54N 17-29E 70
Srd 42-39N 18-07E 50
Hum (Otok Lastovo) 42-45N 16-52E 40
Rijecka 002380200 45-20N 14-25E 30
Dubrovnik 002380300 42-39N 18-05E 30
MRCC Rijecka 002387010 45-19E 14-27E 15
002387020
MRSC Zadar 002387400 44-07N 15-13E 7 MRSC Zadar
002387401
MRSC Sibenik 002387500 43-44N 15-54E 7 MRSC Sibenik
002387501
MRSC Split 002387040 43-30N 16-27E 10 MRSC Split
002387030
MRSC Dubrovnik 002387800 42-39N 18-05E 15 MRSC Dubrovnik
002387801
Cyprus Cyprus 002091000 - - RCC Larnaca
Pissouri 34-39N 32-42E 50
Olympus 34-56N 32-51E 120
Kionia 34-55N 33-12E 100
Egypt Alexandria 006221111 31-11N 28-55E 23 RCC Cairo
Marsa Matruh 31-21N 27-14E 23
Ras Alhkima 31-09N 27-49E 25
El Dab’a 31-02N 28-28E 27
El’ Alamein 30-51N 28-55E 25
Sidi Kerier 31-02N 29-39E 25
Rashid 31-27N 30-22E 27
Baltim 31-33N 31-05E 27
Port Said 006221113 31-15N 32-19E 21
Ras el Barr 31-30N 31-50E 27
Beir Al Abd 31-02N 33-00E 27
Arish 31-07N 33-48E 27
Ismailia 30-36N 32-16E 24
4 - 66

Area (NM) RCC
III Egypt (cont.) Suez 006221113 29-58N 32-33E 22 RCC Cairo
Zhafarana 29-07N 32-39E 27
France La Garde (CROSS) 002275400 43-06N 05-59E 23 MRCC La Garde
Bear 42-31N 03-08E 30
Pic Neoulos 42-29N 02-57E 94
Agde 43-17N 03-30E 31
Espiguette 43-29N 04-08E 19
Place du Planier 43-12N 05-14E 25
Mont Coudon 43-10N 06-10E 72
La Garoupe 43-34N 07-08E 30
Cap Camarat 43-12N 06-40E 30
Pic de l’Ours 43-28N 06-54E 62
Aspretto (Sous CROSS) 002275420 41-55N 08-46E 30 MRCC La Garde/
Ersa 42-58N 09-23E 64 MRSC Corse
Serra Di Pigno 42-52N 09-24E 83
Piana 42-14N 08-38E 69
Punta 41-57N 08-42E 75
Serragia 41-31N 08-59E 58
Conca 41-44N 09-23E 54
Georgia Batumi 002130100 41-39N 41-39E 50 MRCC Georgia
Poti 002130300 42-09N 41-39E 50 RSC Poti
Greece Olympia 002371000 38-01N 23-50E - JRCC Piraeus
Gerania 38-00N 23-20E 98
Poros/Darditsa 37-30N 23-27E 73
Thassos 40-47N 24-43E 90
Sfendami 40-25N 22-31E 41
Thira 36-25N 25-26E 66
Chios 38-23N 26-03E 78
Kefallinia 38-08N 20-40E 107
Kerkyra 39-45N 19-52E 82
Kythira 36-09N 22-59E 52
Limnos 39-52N 25-04E 59
Sitia (Mare) 35-12N 26-06E 75
Mytilini 39-04N 26-21E 84
Parnitha 38-10N 23-44E 98
Petalidi 36-56N 21-52E 83
Pilio 39-22N 22-57E 104
Rodhos 36-16N 27-56E 78
Syros 37-27N 24-56E 57
Knossos 35-17N 24-53E 87
Patmos 37-18N 26-32E 46
Moustakos 35-18N 23-37E 84
Tsoukalas 40-23N 23-28E 68
4 - 67

Area (NM) RCC
III Greece (cont.) Faistos 002371000 35-00N 25-12E 84 JRCC Piraeus
Astypalea 36-36N 28-26E 59
Karpathos 35-28N 27-10E 66
Brochas Kritis 35-19N 25-44E 65
Lichada 38-52N 22-53E 60
Skiros 38-50N 24-30E 68
Andros 37-56N 24-46E 55
Milos 36-41N 24-23E 78
Aspropirgos 002391000 38-03N 23-35E 30
Israel Haifa 004280001 32-49N 35-00E 50 Haifa Radio
Italy Roma 002470001 - -
Conconello 45-40N 13-47E 38 MRSC Trieste
Piancavallo 46-05N 12-32E 70
Monte Cero 45-15N 11-40E 45 MRSC Venezia
Ravenna Bassette 44-24N 12-12E 20 MRSC Ravenna
Forte Garibaldi 43-36N 13-31E 39 MRSC Ancona
Monte Conero 43-33N 13-26E 60
Monte Secco 42-58N 13-52E 38
Silvi Paese 42-33N 14-05E 40
Porto Cervo Eliporto 41-08N 09-32E 25 MRSC Cagliari
Monte Moro 41-06N 09-30E 40
Monte Limbara 40-51N 09-10E 55
Osilo 40-44N 08-40E 40
Campu Spina 39-22N 08-34E 55
Margine Rosso 39-13N 09-14E 19
Monte Serpeddi 39-22N 09-17E 55
Badde Urbara 40-09N 08-37E 55
Monte Tului 40-15N 09-35E 55
Monte Paradiso 42-05N 11-51E 50 MRSC Roma
Monte Cavo 41-45N 12-42E 60
Formia Ascatiello 41-15N 13-36E 30
Monte Argentario 42-23N 11-10E 40 MRSC Livorno
Gorgona 43-25N 09-53E 40
Monte Nero 43-29N 10-21E 40
Zoagli 44-19N 09-15E 37 MRSC Genova
Castellaccio 44-25N 08-56E 45
Monte Bignone 43-52N 07-43E 50
Palermo 002470002 - -
Monte Calvario 42-04N 14-39E 45 MRSC Ancona
Abbate Argento 40-52N 17-17E 50 MRSC Bari
Monte Parano 40-26N 17-25E 35
Monte Sardo 39-52N 18-20E 39
Casa D’orso 41-49N 15-59E 55
4 - 68

Area (NM) RCC
III Italy (cont.) Capo Colonna 002470002 39-01N 17-09E 37 MRSC Reggio
Punta Stilo 38-26N 16-34E 26 Calabria
Capo dell’Armi 37-57N 15-40E 31
Serra del Tuono 39-55N 15-50E 55
Ustica 38-42N 13-10E 40 MRSC Palermo
Monte Erice 38-02N 12-35E 55
Pantelleria 36-46N 12-01E 70
Lampedusa 35-30N 12-37E 25
Caltabellotta 37-34N 13-13E 65
Gela 37-04N 14-14E 19
Siracusa Belvedere 37-05N 15-12E 40 MRSC Catania
Augusta Campolato 37-16N 15-12E 31
Alto
Forte Spuria 38-16N 15-37E 32
Cefalu 38-01N 13-57E 40 MRSC Palermo
Capri 40-33N 14-15E 40 MRSC Napoli
Napoli Posillipo 40-48N 14-11E 36
Varco del Salice 40-17N 15-02E 60
Romania Constanta 002640570 - - Constanta Harbor
Constanta 44-06N 28-38E 25 Master
Enisala 44-51N 28-52E 44
Mahmudia 45-05N 29-04E 45
Sfintu Gheorghe 45-18N 29-34E 24
Russian Novorossiysk 002734411 44-41N 37-47E 26 MRCC
Federation Doob 44-36N 37-58E 51 Novorossiysk
Anapa 44-50N 37-21E 52
Sochi 43-32N 39-51E 71
Taganrog 47-14N 38-56E 19
Temrujk 45-19N 37-13E 28
Tuapse 002734413 44-06N 39-02E 46
Rostov-na-Donu 002734422 47-13N 39-44E 21
Eisk 002734422 46-43N 38-16E 23
Kosa Dolgaya 46-40N 37-45E 25
Astrakhan (Caspian Sea) 002734419 46-30N 48-00E 22.5 MRCC Astrakhan
Iskusstvennyi 45-23N 47-47E 25
Makhachkala 002734423 42-59N 47-30E 23
Serbia and Bar 002790001 42-03N 19-09E 35 MRCC Bar
Montenegro Obosnik 002790002 42-25N 18-37E 35
Slovenia Koper 002780200 45-32N 13-59E 86 MRCC Koper
Spain Malaga (CCR) 002241023 - - MRCC Tarifa
Malaga 36-36N 04-36W 35
Melilla 35-19N 02-57W 35 MRCC Almeria
Motril 36-53N 02-48W 35
Cabo Gata 36-43N 02-10W 35
4 - 69

Area (NM) RCC
III Spain (cont.) MRCC Almeria* 002241002 - - MRCC Almeria
Almeria 36-50N 02-29W 30
Cabo Gata 36-43N 02-11W 30
MRSC Cartagena* 002241003 37-35N 00-58W 30 MRSC Cartagena
MRCC Valencia* 002241004 39-27N 00-20W 30 MRCC Valencia
Valencia (CCR) 002241024 - -
Cartagena 37-35N 00-58W 35 MRSC Cartagena
Alicante 38-20N 00-42W 35 MRCC Valencia
Castellon 39-52N 00-19W 35
Cabo de la Nao 38-43N 00-10E 35
Tarragona 41-21N 01-32E 35 MRSC Tarragona
Barcelona 41-25N 02-07E 35 MRCC Barcelona
Bagur 41-57N 03-14E 35
Menorca 39-59N 04-07E 35 MRCC Palma
Palma de Mallorca 39-44N 02-43E 35
Ibiza 38-55N 01-16E 35
MRSC Castellon* 002241016 39-58N 00-01E 30 MRSC Castellon
MRSC Tarragona* 002241006 41-06N 01-14E 30 MRSC Tarragona
MRCC Barcelona* 002240991 41-20N 02-09E 40 MRCC Barcelona
MRCC Palma* 002241005 - - MRCC Palma
Palma 39-34N 02-39E 30
Cabo Cala Figuera 39-27N 02-31E 30
Turkey Samsun 002712000 - - MRCC Ankara
Pazar 41-08N 40-49E 60
Hidirnebi 40-58N 39-26E 99
Uçpinar 41-19N 36-06E 94
Dütmen 41-26N 35-28E 107
Inebolu 41-53N 33-43E 85
Zonguldak 41-23N 31-49E 67
Istanbul 002711000 - -
Akçakoca 40-58N 31-12E 66
Keltepe 40-38N 30-05E 105
Sarköy 40-41N 27-01E 70
Camlica 41-01N 29-04E 45
Mahyadagi 41-47N 27-37E 85
Kayalidag 39-58N 26-38E 79
Akdag 38-33N 26-30E 92
Antalya 002713000 - -
Dilektepe 37-39N 27-09E 93
Palamut 36-45N 27-03E 79
Yumrutepe 36-15N 29-27E 88
*NOTE: The primary responsibility for the receipt of VHF DSC distress alerts for Spain is carried out via the Coast Radio
Stations. VHF DSC facilities maintained at various MRCCs and MRSCs are only complementary to the Coast Radio Stations
network.
4 - 70

Area (NM) RCC
III Turkey (cont.) Markiz 002713000 36-43N 30-29E 80 MRCC Ankara
Anamur 36-02N 32-45E 61
Cobandede 36-31N 36-15E 108
Ukraine Odessa 002723660 46-25N 30-46E 25 MRCC Odessa
Theodosia 002723663 45-01N 35-23E 35
Kerch 002723659 45-21N 36-32E 25
Mariupol 002723650 47-03N 37-30E 23
IV Bermuda Bermuda Harbor 003100001 32-23N 64-41W 30 RCC Bermuda
Canada Labrador 003160022 - - JRCC Halifax
Nain 56-33N 61-43W 40
Hopedale 55-27N 60-13W 40
Cartright 53-44N 56-58W 40
Goose Bay 53-18N 60-33W 40
St. Anthony 003160021 51-30N 55-50W 40
Fox Harbor 52-22N 55-40W 40
L’Anse aux Meadows 51-34N 55-30W 40
Conche 50-54N 55-53W 40
Twillingate 49-41N 54-48W 40
Comfort Cove 49-15N 54-53W 40
St. John’s 003160020 47-37N 52-40W 40
Lumsden 49-17N 53-35W 40
Cape Bonavista 48-42N 53-05W 40
Victoria 47-47N 53-17W 40
Placentia 003160019 - -
Cape Pine 46-37N 53-32W 40
Cuslett 46-58N 54-09W 40
Freshwater Hill 47-16N 53-59W 40
Arnold’s Cove 47-46N 54-00W 40
St. Lawrence 46-55N 55-23W 40
Fortune Head 47-04N 55-51W 40
Bay L’Argent 47-37N 54-52W 40
Hermitage 47-34N 55-57W 40
Port aux Basques 003160018 47-41N 59-16W 40
Ramea Island 47-31N 57-25W 40
Stephenville 48-33N 58-46W 40
Pinetree 48-35N 58-40W 40
Mount Moriah 48-58N 58-03W 40
Bonne Bay 49-36N 57-57W 40
Point Riche 50-42N 57-25W 40
Riviere au Renard 003160025 49-01N 64-24W 40
Harrington Harbor 50-30N 59-29W 40
La Romaine 50-13N 60-41W 40
Natashquan 50-09N 61-48W 40
4 - 71

Area (NM) RCC
IV Canada (cont.) Havre St. Pierre 003160025 50-16N 63-41W 40 JRCC Halifax
Forillon 48-50N 64-16W 40
Heath Point 49-05N 61-42W 40
Newport 48-14N 64-48W 40
Carleton 48-08N 66-07W 40
Cap-aux-Meules 47-23N 61-52W 40
Sydney 003160017 46-11N 59-54W 40
Point Escuminac 47-04N 64-48W 40
North Cape 47-03N 64-00W 40
Cape Egmont 46-24N 64-08W 40
Montague 46-11N 62-40W 40
Cheticamp 46-35N 60-59W 40
Cape North 47-01N 60-26W 40
Kilkenny Lake 46-13N 60-10W 40
St. Columba 46-00N 60-51W 40
Halifax 003160016 - -
Fox Island 45-20N 61-05W 40
Ecum Secum 44-58N 62-09W 40
Shannon Hill 44-41N 63-37W 40
Ketch Harbor 44-28N 63-37W 40
Kingsburg 44-17N 64-17W 40
Saint John 003160015 45-14N 65-59W 40
Scotch Mountain 45-46N 65-48W 40
Cape Blomidon 45-13N 64-24W 40
Grand Manan 44-36N 66-54W 40
Tiverton 44-23N 66-14W 40
Yarmouth 43-44N 66-07W 40
Lockeport 43-40N 65-08W 40
Mexico Tampico 003450110 22-12N 97-51W 80 MRCC Ciudad
Madero
Veracruz 003450310 19-06N 96-08W 80 MRCC Veracruz
Chetumal 003451120 18-30N 88-17W 80 MRCC Chetumal
Cozumel 003451110 20-28N 86-58W 80 MRSC Isla
Cozumel
Ciudad del Carmen 003450710 18-39N 91-51W 80 MRSC Lerma-
Campeche
Progreso 003450910 21-16N 89-41W 80 MRSC Yukalpeten
Coatzacoalcos 003450320 18-09N 94-26W 80 MRCC Veracruz
NOTE: The following local VHF DSC stations assist with SAR communications within their
individual coastal areas:
Isla Mujeres 003451171 21-14N 87-00W 20 MRSC Isla Mujeres
Tuxpan 003450372 20-57N 97-22W 20 MRSC Tuxpan
Lerma 003450772 19-49N 90-35W 20 MRSC Lerma
Matamoros 003450172 25-44N 97-33W 20 MRSC Matamoros
4 - 72

Area (NM) RCC
IV Mexico (cont.) NOTE: The following local VHF DSC stations assist with SAR communications within their
Mezquital 003450173 25-15N 97-27W 20 MRSC Mezquital
Cayo Arcas 003450974 20-13N 91-58W 20 MRSC Cayo Arcas
Isla Holbox 003451174 21-32N 87-17W 20 MRSC Isla Holbox
Isla Contoy 003451175 21-30N 84-48W 20 MRSC Isla Contoy
Playa Linda 003451176 21-08N 86-47W 20 MRSC Playa Linda
Netherlands Curaçao 003061000 - - JRCC Curaçao
Antilles Seru Gracia (Curaçao) 12-20N 69-08W 40
Jamanota (Aruba) 12-29N 69-56W 35
Sibu Rincon (Bonaire) 12-14N 68-20W 30
Mt. Scenery (Saba) 17-38N 63-14W 70
VI Argentina Argentina Radio 007010111 34-36S 58-28W 35 MRCC Buenos
Buenos Aires 007010001 34-27S 58-37W 35 Aires
Mar del Plata (Armada) 007010221 38-03S 57-32W 35 MRCC Puerto
Mar del Plata 007010003 38-03S 57-32W 35 Belgrano
Comodoro Rivadavia 007010008 45-51S 67-25W 35
Rio Gallegos 007010010 51-37S 69-03W 35 MRCC Ushuaia
San Blas 007010006 40-33S 62-14W 35 MRSC Bahia
Blanca
Uruguay Montevideo 007703870 - - MRCC Montevideo
Armada Radio 34-56S 56-09W 30
Carmelo Radio 33-59S 58-17W 30
Colonia Radio 34-28S 57-50W 30
Piriapolis Radio 34-52S 55-16W 30
Chafalote Radio 34-28S 54-26W 30
Santa Teresa Radio 34-00S 53-33W 30
VIII India Daman 004192201 20-25N 72-52E 20 MRCC Mumbai
Porbander 004192202 31-38N 69-37E 25
Mumbai 004192203 18-55N 72-50E 25
New Mangalore 004192204 12-55N 74-48E 25
Kochi 004192205 09-58N 76-16E 20
Goa 004192206 15-25N 73-48E 25
Okha 004192207 22-28N 69-05E 20
Chennai 004194401 13-06N 80-18E 25 MRCC Chennai
Vishakhapatnam 004194402 17-41N 83-17E 20
Paradip 004194403 20-16N 86-42E 25
Haldia 004194404 22-02N 88-06E 25
Tuticorn 004194405 08-45N 78-12E 20
Mandapam 004194406 09-17N 79-05E 20
Diglipor 004194407 13-18N 93-04E 25 MRCC Port Blair
Campbell Bay 004194408 07-00N 93-55E 30
Port Blair 004194409 11-41N 92-46E 30
4 - 73

Area (NM) RCC
VIII Mauritius Mauritius Radio 006452700 - - MRCC Mauritius
Albion 20-13S 57-24E 25
Belle Mare 20-11S 57-46E 25
Cap Malheureux 19-59S 57-36E 25
Souillac 20-31S 57-31E 25
Myanmar Yangon (Rangoon) 005060100 16-42N 96-17E 25 MRCC Yangon
(Burma) Myeik 005060200 12-26N 98-36E 25
IX Egypt Quseir 006221112 26-06N 34-17E 28 RCC Cairo
Ras Gharib 28-22N 33-04E 28
Zeitiya 27-49N 33-35E 29
Hurghada 27-15N 33-48E 28
Safaga 26-45N 33-56E 28
Sharm-El-Sheikh 27-51N 34-13E 24
Dahab 28-29N 34-29E 23
Iran Kharg (Island) 004225306 29-16N 50-15E 25-30 HQ PSO Tehran
Khorramshahr 004225309 30-20N 48-23E 25-30
Lengeh 004225307 26-33N 54-53E 25-30
Bandar Abbas 004225304 27-07N 56-04E 25-30
Bahonar 004225308 27-18N 57-17E 25-30
Bandar Khomeyni 004225300 30-30N 49-09E 25-30
Bushehr 004225302 28-58N 50-50E 25-30
Anzali (Caspian Sea) 004225305 37-25N 49-20E 25-30
Nowshahr (Caspian Sea) 004225303 36-40N 51-30E 25-30
Neka (Caspian Sea) 004225311 36-50N 53-15E 25-30
Israel Haifa 004280001 - - Haifa Radio
Elat 29-30N 34-58E 50
Jordan Aqaba Radio 004381234 29-27N 34-58E 25 Harbor Master
Aqaba Port Control 29-30N 34-59E 25 Aqaba
Kuwait Kuwait Radio 004472188 29-22N 47-59E N.I.
Pakistan Karachi 004634060 24-52N 67-01E 40 MRCC Karachi
Ormara 004634056 25-13N 64-38E 40
Gwadar 004634052 25-08N 64-20E 40
Qatar Mesaieed Port 004661001 25-56N 51-35E 50 Dept. of Customs &
Ports
Saudi Arabia Jiddah 004030000 - - RCC Jiddah
Duba 27-21N 35-42E 33
Al Wajh 26-14N 36-27E 33
Umm Lajj 25-01N 37-16E 33
Yanbu 24-05N 38-03E 33
Rabigh 22-48N 39-01E 33
Sharm Abhur 21-43N 39-06E 33
Jiddah 21-15N 39-10E 30
Al Shoaibah 20-40N 39-31E 35
Al Lith 20-08N 40-16E 35
4 - 74

Area (NM) RCC
IX Saudi Arabia Al Qunfudhah 004030000 19-07N 41-05E 35 RCC Jiddah
(cont.) Al Birk 18-12N 41-32E 35
Al Shaqiq 17-43N 42-01E 35
Jizan 16-53N 42-32E 35
Khafji 28-26N 48-29E 33
Al Jubayl 27-00N 49-39E 33
Dammam 26-26N 50-06E 33
Aziziyah 26-15N 50-10E 33
United Arab Emirates Radio 004700000 - - RCC Abu Dhabi
Emirates Fujayrah 25-04N 56-21E 25
Khawr Fakkan 25-21N 56-22E 25
Ras al Khaymah 25-47N 55-59E 25
Umm al Qaywayn 25-32N 55-32E 25
Jabal Ali 25-02N 55-06E 25
Abu Zaby (Abu 24-28N 54-22E 25
Dhabi)
Ruways (Jabal 24-06N 52-44E 25
Dhanna)
Zirkuh 24-53N 53-04E 25
X New Caledonia Noumea 005401000 - - MRCC Noumea
Noumea 22-16S 166-28E 40
Mont Do 21-45S 166-00E 95
Kafeate 21-02S 164-43E 51
Mandgelia 20-24S 164-32E 84
Ouvea 20-39S 166-32E 27
Lifou 21-06S 167-24E 36
Mare 21-28S 168-02E 28
Oungone 22-19S 166-55E 68
XI China Dalian 004121300 38-50N 121-31E 25 MRCC Liaoning
Fuzhou 004122600 26-02N 119-18E 25 MRCC Fujian
Guangzhou 004123100 23-08N 113-29E 25 MRCC Guangdong
Haikou 004123500 20-01N 110-17E 25 MRSC Haikou
Lianyungang 004122300 34-42N 119-18E 25 MRCC
Lianyungang
Ningbo 004122400 30-01N 121-30E 25 MRSC Ningbo
Qingdao 004122200 36-10N 120-28E 25 MRSC Qingdao
Qinhuangdao 004121200 39-33N 119-31E 25 MRCC Hebei
Shanghai 004122100 31-06N 121-32E 25 MRCC Shanghai
Tianjin 004121100 39-03N 117-25E 25 MRCC Tianjin
Xiamen 004122700 24-35N 118-06E 25 MRSC Xiamen
Yantai 004121400 37-32N 121-22E 25 MRSC Yantai
Zhanjiang 004123300 21-09N 110-21E 23 RSC Zhanjiang
Indonesia Amboina (Ambon) 005250006 03-41S 128-11E 20 MRSC Amboina
Balikpapan 005250009 01-16S 116-49E 20 MRSC Balikpapan
4 - 75

Area (NM) RCC
XI Indonesia Batu Ampar 005250012 01-09N 104-00E 20 MRSC Tanjung
(cont.) Pinang
Belawan 005250003 03-46N 98-41E 20 MRSC Medan
Benoa 005250014 08-44S 115-12E 20 MRSC Denpasar
Biak 005250031 01-12S 136-05E 20 MRCC Biak
Bitung 005250005 01-26N 125-10E 20 MRSC Menado
Cilacap 005250030 07-47S 109-02E 20 MRCC Jakarta
Dumai 005250004 01-39N 101-26E 20 MRSC Pekanbaru
Fak-Fak 005250026 02-56S 132-17E 20 MRSC Sorong
Jakarta 005250000 06-07S 106-51E 20 MRCC Jakarta
Jayapura 005250007 02-31S 140-43E 20 MRSC Jayapura
Kendari 005250019 03-58S 122-34E 20 MRCC Ujung
Pandang
Kupang 005250010 10-12S 123-37E 20 MRSC Kupang
Lembar 005250022 08-43S 116-04E 20 MRSC Denpasar
Makassar 005250002 05-06S 119-26E 20 MRCC Ujung
Pandang
Manokwari 005250023 00-51S 134-04E 20 MRCC Biak
Merauke 005250021 08-28S 140-23E 20 MRSC Merauke
Panjang 005250013 05-28S 105-19E 20 MRSC Palembang
Pantoloan 005250018 00-39S 119-44E 20 MRSC Menado
Pontianak 005250016 00-01S 109-19E 20 MRSC Pontianak
Sanana 005250025 02-03S 125-38E 20 MRSC Amboina
Sei Kolak Kiang 005250029 00-51N 104-36E 20 MRSC Tanjung
Pinang
Semarang 005250008 06-56S 110-19E 20 MRCC Surabaya
Sibolga 005250028 01-44N 98-46E 20 MRSC Medan
Sorong 005250011 00-53S 131-18E 20 MRSC Sorong
Surabaya 005250001 07-11S 112-43E 20 MRCC Surabaya
Tahuna 005250024 03-36N 125-30E 20 MRSC Menado
Tanjung Pinang 005250029 00-56N 104-29E 20 MRSC Tanjung
Pinang
Tarakan 005250017 03-17N 117-35E 20 MRSC Balikpapan
Ternate 005250020 00-47N 127-35E 20 MRSC Amboina
Malaysia Pinang - 05-26N 100-24E - MRCC Port Klang
Gunung Jerai 005330001 05-47N 100-26E 95
Gunung 005330003 04-31N 101-23E 117
Berinchang
Ulu Kali 005330004 03-26N 101-47E 114
Gunung Ledang 005330005 02-03N 102-34E 95
Tioman 005330006 02-48N 104-12E 27
Kuala Rompin 005330007 02-48N 103-29E 38
Kemuning 005330008 04-19N 103-28E 57
Kuala Terengganu 005330009 05-18N 103-08E 55
Machang 005330010 05-43N 102-17E 70
4 - 76

Area (NM) RCC
XI Malaysia (cont.) Kuching 005330011 01-35N 110-11E 85 MRCC Port Klang
Bintulu 005330012 03-13N 113-05E 48
Kota Kinabalu 005330013 06-02N 116-12E 75
Labuan 005330014 05-17N 115-15E 22
Republic of Inchon Maritime Police 004401001 37-30N 126-30E 25 RCC Inchon
Korea Donghae Maritime Police 004401002 37-31N 129-07E 25 RCC Donghae
Mokpo Maritime Police 004401003 34-46N 126-23E 25 RCC Mokpo
Busan Maritime Police 004401004 35-07N 129-02E 25 RCC Busan
Cheju Maritime Police 004401005 33-21N 126-49E 25 RCC Cheju
Inchon 004400001 37-34N 126-41E 25 RCC Inchon
Kangnung 004400601 37-45N 128-53E 25 RCC Donghae
Mokpo 004400301 34-48N 126-30E 25 RCC Mokpo
Busan 004400101 35-06N 129-03E 25 RCC Busan
Seoul 004400002 37-29N 128-43E 25 RCC Donghae
Singapore Singapore Port 005630002 01-16N 103-51E 25 Singapore Port
Operations Control Operations Control
Center
Taiwan Chi-lung (Keelung) 004162019 - -
Anmashan (North) 24-16N 121-01E 86
Anmashan (West) 24-16N 121-01E 86
Chi-lung 25-08N 121-45E 21
Chinmen (Mainland) 24-28N 118-22E 32
Fukueichiao 25-14N 121-31E 40
Hotien Shan 23-53N 121-35E 45
Hsichuan Chuan 22-34N 121-01E 51
Lung Chuan 22-56N 120-26E 21
Matsu (Mainland) 26-13N 119-59E 32
San-I 24-24N 120-44E 43
Shou Shan 22-38N 120-15E 39
Suao 24-37N 121-52E 21
Taiho Shan 22-15N 120-52E 45
Taping 23-34N 120-36E 48
Taping Ting 22-01N 120-41E 30
Tsaoshan 25-06N 121-52E 51
Yingtzuling (North 24-54N121-48E 64
East)
Yingtzuling (South 24-54N 121-48E 64
East)
Thailand Bangkok Radio 005671000 - - RCC Bangkok
(Nonthaburi)
Sriracha 13-06N 100-55E 27
Petchaburi 12-59N 100-03E 27
Vietnam Ben Thuy 005742009 18-39N 105-42E 30 Cua Lo Port
Authority
Cua Ong (Cam Pha) 005742008 20-01N 107-22E 30 Quang Ninh Port
Authority
4 - 77

Area (NM) RCC
XI Vietnam (cont.) Da Nang 005741999 16-04N 108-13E 30 Da Nang Port
Authority
Hai Phong 005741996 20-52N 106-41E 30 Hai Phong Port
Authority
Ho Chi Minh City 005741993 10-46N 106-43E 30 Saigon Port
Authority
Hon Gai (Quang Ninh) 005742006 20-57N 107-04E 30 Quang Ninh Port
Authority
Hue 005742010 16-33N 107-38E 30 Thien Hue Port
Authority
Mong Cai 005742007 21-32N 107-58E 30 Quang Ninh Port
Authority
Nha Trang 005742001 12-12N 109-13E 30 Nha Trang Port
Authority
Vung Tau 005742004 10-21N 107-06E 30 Vung Tau Port
Authority
Hong Kong Hong Kong Maritime 004773500 22-24N 114-07E 50 MRCC Hong Kong
(Associate Rescue
Member of Victoria Peak 22-16N 114-08E
IMO) (Alternative)
XII Canada Prince Rupert 003160013 - - JRCC Victoria
Dundas 54-31N 130-55W 40
Mount Hayes 54-17N 130-18W 40
Naden Harbor 53-57N 132-57W 40
Mount Gil 53-16N 129-12W 40
Cumshewa 53-10N 132-00W 40
Klemtu 52-35N 128-34W 40
Rose Inlet 52-13N 131-13W 40
Calvert 51-35N 128-00W 40
Comox 003160014 49-45N 124-57W 40
Port Hardy 50-42N 127-42W 40
Texada 49-42N 124-26W 40
Discovery 50-19N 125-22W 40
Tofino 003160012 - -
Holberg 50-38N 128-08W 40
Eliza Dome 49-52N 127-07W 40
Esperanza 49-50N 126-48W 40
Nootka 49-36N 126-37W 40
Estevan Point 49-23N 126-32W 40
Port Alberni 49-13N 124-49W 40
Mount Ozzard 48-58N 125-30W 40
Amphitrite Point 48-55N 125-32W 40
Victoria 003160011 - -
Bowen 49-21N 123-23W 40
Annacis Island 49-12N 122-55W 40
Mount Parke 48-50N 123-18W 40
4 - 78

Area (NM) RCC
XII Canada (cont.) Mount Newton 003160011 48-37N 123-27W 40 JRCC Victoria
Helmcken 48-24N 123-34W 40
Vancouver 003160010 - -
Watts Point 49-39N 123-13W 40
Ecuador Guayaquil 007354750 02-11S 79-53W 30 Guayaquil Coast
Esmeraldas 007354752 00-57N 70-39W 30 Guard
Bahia 007354753 00-35S 80-25W 30
Manta 007354754 00-57S 80-43W 30
Salinas 007354755 02-12S 80-52W 30
Puerto Bolivar 007354756 03-16S 80-00W 30
Ayora 007354757 00-44S 90-20W 30
Baquerizo Moreno 007354758 00-54S 89-37W 30
Mexico Mazatlan 003450810 23-10N 106-26W 80 MRCC Mazatlan
Ensenada 003450210 31-51N 116-37W 80 MRCC Ensenada
Manzanillo 003451410 19-01N 104-19W 80 MRSC Puerto
Vallarta
Acapulco 003451810 16-50N 99-56W 80 MRSC Acapulco
Lazaro Cardenas 003451610 17-57N 102-12W 80 MRSC Lazaro
Cardenas
Puerto Vallarta 003451210 20-46N 105-32W 80 MRSC Puerto
Vallarta
NOTE: The following local VHF DSC stations assist with SAR communications within their
Guaymas 003450671 27-55N 110-52W 20 MRSC Guaymas
Salina Cruz 003452071 16-11N 96-12W 20 MRSC Salina Cruz
La Paz 003450471 24-08N 110-21W 20 MRSC La Paz
Puerto Penasco 003450672 31-18N 113-35W 20 MRSC Puerto
Penasco
Topolobampo 003450872 25-35N 109-09W 20 MRSC
Topolobampo
Puerto Madero 003452271 14-42N 92-24W 20 MRSC Puerto
Madero
Puerto Cortez 003450472 24-33N 111-45W 20 MRSC Puerto
Cortez
Isla de Cedros 003450272 28-12N 115-15W 20 MRSC Isla de
Cedros
Isla Guadalupe 003450273 29-02N 118-17W 20 MRSC Isla
Guadalupe
San Felipe 003450274 31-01N 114-50W 20 MRSC San Felipe
Los Cabos 003450473 22-52N 109-53W 20 MRSC Los Cabos
Santa Rosalia 003450474 27-20N 112-15W 20 MRSC Santa
Rosalia
Isla Socorro 003450475 18-36N 110-58W 20 MRSC Isla Socorro
Isla Clarion 003451472 18-22N 115-44W 20 MRSC Isla Clarion
Huatulco 003452072 15-45N 96-08W 20 MRSC Huatulco
4 - 79

Area (NM) RCC
XII Mexico (cont.) NOTE: The following local VHF DSC stations assist with SAR communications within their
Paredon 003452272 16-03N 93-52W 20 MRSC Paredon
San Blas 003450174 21-32N 105-17W 20 MRSC San Blas
XIII Russian Vladivostok 002734412 43-07N 131-55E 55 MRCC Vladivostok
Federation Nakhodka 42-51N 132-50E 45
Tumannaya (Posiet) 42-34N 131-11E 70
Yuzhno-Sakhalinsk 002733733 - - MRSC
Korsakov 46-45N 142-27E 42 Yuzhno-Sakhalinsk
Kholmsk 47-02N 142-03E 31
Nevelsk 46-38N 141-51E 40
Magadan 002734416 59-33N 150-43E 19 MRSC
Petropavlovsk-
Kamchatskiy
XV Chile Arica 007250010 18-29S 70-19W 39 MRSC Iquique
Iquique 007250020 20-21S 70-06W 64
Tocopilla 007250030 22-05S 70-12W 14
Mejillones 007250040 23-05S 70-27W 14
Antofagasta 007250050 23-40S 70-24W 30
Taltal 007250060 25-24S 70-29W 14 MRSC Valparaiso
Chanaral 007250070 26-21S 70-38W 14
Caldera 007250080 27-04S 70-49W 14
Huasco 007250090 28-27S 71-13W 14
Isla de Pascua 007250100 27-11S 109-25W 44
Coquimbo 007250110 29-56S 71-20W 62
Los Vilos 007250120 31-54S 71-31W 14
Quintero 007250125 32-46S 71-31W 14
Valparaiso 007251860 33-04S 71-36W 63
San Antonio 007250140 33-34S 71-37W 31
Juan Fernandez 007250130 33-37S 78-49W 14
Constitucion 007250150 35-19S 72-24W 14 MRSC Talcahuano
Talcahuano 007250170 36-37S 73-04W 32
Valdivia 007250220 39-48S 73-15W 14
Corral 007250210 39-53S 73-25W 14
Puerto Montt 007250230 41-39S 73-10W 34 MRCC Puerto
Corona 007250235 41-47S 73-52W 26 Montt
Ancud 007250240 41-52S 73-50W 14
Castro 007250250 42-29S 73-46W 14
Chaiten 007250260 42-55S 72-43W 14
Quellon 007250270 43-07S 73-37W 14
Isla Guafo 007250290 43-34S 74-49W 33
Melinka 007250280 43-54S 73-44W 14
Puerto Aguirre 007250294 45-09S 73-31W 14
Aysen 007250300 45-24S 72-43W 16
Puerto Chacabuco 007250298 45-26S 73-49W 14
4 - 80

Area (NM) RCC
XV Chile (cont.) Cabo Raper 007250310 46-49S 75-37W 21 MRCC Punta
San Pedro 007250320 47-42S 74-53W 18 Arenas
Puerto Eden 007250330 49-08S 74-27W 14
Puerto Natales 007250340 51-45S 72-32W 14
Faro Evangelistas 007250350 52-23S 75-06W 21
Bahia Felix 007250370 52-44S 73-46W 19
Faro Fairway 007250360 52-57S 74-05W 19
Punta Arenas 007250380 53-09S 71-02W 64
Punta Delgada 007250390 52-27S 69-33W 17
Punta Dungeness 007250400 52-24S 68-26W 20
Espiritu Santo 007250410 52-39S 68-36W 24
Puerto Williams 007250420 54-56S 67-36W 22
Wollaston 007250430 55-36S 67-25W 28
Diego Ramirez 007250440 56-31S 68-42W 28
Bahia Fildes 007250450 62-11S 58-55W 14
Bahia Paraiso 007250470 64-49S 62-51W 14
XVI Peru Zorritos 007600120 03-40S 80-40W 40 MRSC Zorritos
Talara 007600122 04-34S 81-16W 40 MRSC Talara
Paita 007600121 05-05S 81-07W 40 MRCC Paita
Pimentel 007600123 06-57S 79-52W 40 MRSC Pimentel
Salaverry 007600124 08-13S 78-59W 40 MRSC Salaverry
Chimbote 007600126 09-05S 78-38W 40 MRCC Chimbote
Supe 007600127 10-49S 77-43W 40 MRSC Supe
Huacho 007600128 11-07S 77-37W 40 MRSC Huacho
Callao 007600125 12-03S 77-09W 40 MRCC Callao
Pisco 007600130 13-43S 76-14W 40 MRSC Pisco
San Juan 007600131 15-21S 75-09W 40 MRSC San Juan
Mollendo 007600129 17-01S 72-01W 40 MRCC Mollendo
Ilo 007600132 17-38S 71-21W 40 MRSC Ilo
4 - 81
LIST OF OPERATIONAL MF DSC COAST STATIONS FOR SEA AREAS A2

MF DSC Coast Station

Area (NM) RCC
I Belgium Oostende 002050480 51-11N 02-48E 115 Oostende
Denmark Lyngby 002191000 - - SOK, Aarhus
Blåvand 55-33N 08-07E 153
Skagen 57-44N 10-34E 148
Torshavn (Færoes) 002311000 62-00N 06-47W 225 MRCC Torshavn
Estonia Tallinn 002761000 59-24N 24-40E 150 MRCC Tallinn
Undva 58-29N 21-59E 150
Kuressaare 002760120 58-15N 22-29E 150
Finland Turku 002300230 - - MRCC Turku
Sondby 002302000 60-16N 25-51E 185 MRSC Helsinki
Mariehamn 002301000 60-07N 19-57E 185 MRCC Turku
Hailuoto 002303000 65-02N 24-32E 185 MRSC Vaasa
Raippaluoto 63-18N 21-10E 185
France Corsen (CROSS) 002275300 - - MRCC Corsen
Ouessant (Tx) 48-28N 05-03W 300
Corsen (Rx) 48-24N 04-24W 300
Iceland Reykjavik 002510100 64-05N 21-51W - MRCC Keflavik
Arnarnes (Tx) 66-05N 23-02W 200
Garoskagi (Rx) 64-04N 22-41W 200
Grimsey (Rx) 66-31N 17-59W 200
Holl (Rx) 65-35N 14-15W 200
Hornafjorour (Tx) 64-15N 15-13W 200
Nes (Tx) 65-09N 13-42W 200
Raufarhofn (Tx) 66-27N 15-56W 200
Rjupnahaeo (Tx) 64-05N 21-50W 200
Saefjall (Tx) 63-25N 20-16W 200
Streite (Rx) 64-43N 13-59W 200
Storhofdi (Tx) 63-24N 20-17W 200
Thverfjalli (Rx) 66-02N 23-18W 200
Ireland Malin Head 002500100 55-21N 07-20W 150 MRSC Malin Head
Valentia 002500200 51-55N 10-20W 150 MRSC Valentia
Latvia Riga Rescue Radio 002750100 57-02N 24-05E 150 MRCC Riga
Uzava 57-13N 21-26E 120
Akmenrags 56-50N 21-03E 120
Lithuania Klaipeda Rescue 002770330 55-43N 21-06E 100 MRCC Klaipeda
Netherlands Netherlands Coast Guard 002442000 - - JRCC Den Helder
Scheveningen (Tx) 52-06N 04-15E 240
Appingedam (Tx) 53-20N 06-52E 150
West Terschelling (Rx) 53-21N 05-13E 150
Noordwijk (Rx) 52-18N 04-28E 150
Norway Tjøme 002570100 - - MRCC Stavanger
Jeloy 59-26N 10-37E 200
4 - 82

Area (NM) RCC
I Norway (cont.) Rogaland 002570300 - - MRCC Stavanger
Bergen 60-43N 04-53E 200
Farsund 58-04N 06-45E 200
Vigre 58-39N 05-36E 200
Florø 002570500 -
Florø 61-36N 05-00E 200
Ørlandet 63-40N 09-33E 200
Bodø 002570700 - 200 MRCC Bodø
Sandnessjøen 66-01N 12-37E 200
Andenes 69-17N 16-01E 200
Jan Mayen 70-57N 08-40W 200
Bjørnøya 74-31N 19-01E 200
Vardø 002570800 - 200
Tromsø 69-39N 18-57E 200
Hammerfest 70-40N 23-40E 200
Berlevåg 70-52N 29-04E 200
Svalbard 002570900 78-02N 13-40E 200
Poland Witowo 002610210 54-32N 16-32E 150 MRCC Gdynia
Barzowice (Tx) 54-28N 16-30E N.I.
Gdynia/Oksywie (Tx) 54-33N 18-32E N.I.
Grzywacz (Rx) 53-57N 14-30E N.I.
Russian Kaliningrad 002734417 54-45N 20-35E 125 MRSC Kaliningrad
Federation St. Petersburg 002733700 - - MRCC St.
Primorsk (Rx) 60-20N 28-43E 150 Petersburg
Karavaldayskiy (Tx) 59-59N 29-07E 150
Murmansk 002734420 68-52N 33-05E 170 MRCC Murmansk
Arkhangel’sk 002734414 64-21N 40-37E 1 MRSC
Arkhangel’sk
Sweden Göteborg 002653000 57-28N 11-56E 210 MRCC Göteborg
Bjuröklubb 64-28N 21-36E 210
Hoburg 56-56N 18-13E 250
Stockholm (Rx) 59-16N 18-42E 210
United Aberdeen 002320004 57-25N 01-51W 150 MRCC Aberdeen
Kingdom Humber 002320007 54-05N 01-10W 150 MRSC Humber
Cullercoats 55-04N 01-28W 150
Stornoway 002320024 58-13N 06-20W 150 MRSC Stornoway
Holyhead 002320018 53-19N 04-38W 150 MRSC Holyhead
Falmouth 002320014 50-08N 05-07W 150 MRCC Falmouth
Clyde 002320022 55-58N 04-48W 150 MRCC Clyde
Milford Haven 002320017 51-41N 05-03W 150 MRSC Milford
Haven
Shetland 002320001 60-09N 01-08W 150 MRSC Shetland
II Benin Cotonou 006100001 06-21N 02-26E 150
4 - 83

Area (NM) RCC
II France Corsen (CROSS) 002275300 - - MRCC Corsen
Ouessant (Tx) 48-28N 05-03W 300
Corsen (Rx) 48-24N 04-24W 300
Ghana Tema 006270000 05-39N 00-03W 200 Harbor Master’s
Office Accra
Spain Bilbao (CCR) 002241021 - -
Machichaco 43-27N 02-45W 150 MRCC Bilbao
Cabo Penas 43-39N 05-51W 150 MRCC Gijon
MRCC Bilbao* 002240996 43-21N 03-02W 150 MRCC Bilbao
MRCC Gijon* 002240997 43-34N 05-42W 150 MRCC Gijon
Coruna (CCR) 002241022 - -
Finisterre 42-54N 09-16W 150 MRCC Finisterre
Coruna 43-22N 08-27W 150 MRCC Coruna
MRCC Finisterre* 002240993 42-42N 08-59W 150 MRCC Finisterre
MRCC Tarifa* 002240994 36-01N 05-35W 150 MRCC Tarifa
Malaga (CCR) 002241023 - -
Chipiona 36-41N 06-24W 150
Conil 36-17N 06-05W N.I.
Tarifa 36-03N 05-33W 150
MRCC Tenerife* 002241007 28-29N 16-14W 150 MRCC Tenerife
MRCC Las Palmas* 002240995 28-09N 15-25W 150 MRCC Las Palmas
Las Palmas (CCR) 002241026 - -
Arrecife 29-08N 13-31W 150
Las Palmas 27-45N 15-36W 150
Tenerife 28-25N 16-20W 150
III Bulgaria Varna 002070810 43-04N 27-46E 200 MRCC Varna
Croatia MRCC Rijecka 002387010 45-19N 14-27E 160 MRCC Rijecka
Cyprus Cyprus 002091000 35-02N 33-17E 200 RCC Larnaca
Egypt Alexandria 006221111 31-11N 29-51E 200 RCC Cairo
Port Said 006221113 31-19N 32-18E 200
France La Garde (CROSS) 002275400 - - MRCC La Garde
Porquerolles (Tx) 42-59N 06-12E 200
La Garde (Rx) 43-06N 05-59E 200
Georgia Batumi 002130100 41-39N 41-39E 150 MRCC Georgia
Greece Olympia 002371000 38-01N 23-50E - JRCC Piraeus
Iraklion 35-20N 25-07E 200
Kerkyra 39-37N 15-55E 200
Limnos 39-52N 25-04E 200
Rodos 36-26N 28-15E 200
Piraeus JRCC2,3 237673000 37-58N 23-40E 130
Kerkira3 237673190 39-38N 19-55E 130
Patrai3 237673140 38-14N 21-44E 130
*NOTE: The primary responsibility for the receipt of MF DSC distress alerts for Spain is carried out via the Coast Radio
Stations. MF DSC facilities maintained at various MRCCs are only complementary to the Coast Radio Stations network.
4 - 84

Area (NM) RCC
III Greece (cont.) Pylos3 237673230 36-54N 21-41E 130 JRCC Piraeus
Iraklion3 237673180 35-20N 25-08E 130
Rodhos3 237673150 36-27N 28-14E 130
Thessaloniki3 237673210 40-38N 22-56E 130
Mytilini3 237673220 39-06N 26-35E 130
Aspropirgos2 002391000 38-03N 23-35E 200
Israel Haifa 004280001 32-49N 35-00E 150 MRCC Israel
Italy Roma 002470001 - -
Trieste 45-40N 13-46E 200 MRSC Trieste
Ancona 43-36N 13-28E 200 MRSC Ancona
Cagliari 39-13N 09-14E 200 MRSC Cagliari
Roma 41-37N 12-29E 200 MRSC Roma
Genova 44-25N 08-56E 200 MRSC Genova
Palermo 002470002 - -
Palermo (Punta Raisi) 38-11N 13-06E 200 MRSC Palermo
Mazara del Vallo 37-39N 12-36E 200
Augusta 37-14N 15-14E 200 MRSC Catania
Bari 40-26N 17-25E 200 MRSC Bari
Romania Constanta 002640570 44-06N 28-37E 100 Constanta Harbor
Master
Russian Novorossiysk 002734411 44-36N 37-58E 173 MRCC
Federation Taganrog 47-14N 38-56E 70 Novorossiysk
Temrujk 45-19N 37-13E 70
Serbia and Bar 002790001 42-01N 19-08E 150 MRCC Bar
Montenegro
Spain Valencia (CCR) 002241024 - -
Bagur 42-17N 03-15E N.I. MRCC Barcelona
Cabo la Nao 38-43N 00-10W 150 MRCC Valencia
Cabo de Gata 36-43N 02-12W 150 MRCC Almeria
Palma 39-21N 02-59E 150 MRCC Palma
MRCC Almeria* 002241002 36-50N 02-29W 150 MRCC Tarifa
MRCC Valencia* 002241004 39-27N 00-20W 150 MRCC Valencia
MRCC Barcelona* 002240991 41-20N 02-09E 150 MRCC Barcelona
Turkey Izmir 002715000 38-21N 26-35E 146 MSRCC Ankara
Antalya 002713000 36-53N 30-42E 146
Samsun 002712000 41-17N 36-20E 146
Istanbul 002711000 40-59N 28-49E 146
IV Bermuda Bermuda Harbor 003100001 32-23N 64-41W 200 RCC Bermuda
Greenland Aasiaat 003313000 - - MRCC Grønnedal
(Denmark) Upernavik 72-47N 56-10W 280
Sisimiut 66-55N 53-40W 270
Nuuk 64-04N 52-01W 250
*NOTE: The primary responsibility for the receipt of MF DSC distress alerts for Spain is carried out via the Coast Radio
Stations. MF DSC facilities maintained at various MRCCs are only complementary to the Coast Radio Stations network.
4 - 85

Area (NM) RCC
IV Greenland Qeqertarsuaq 003313000 69-14N 53-31W 250 MRCC Grønnedal
(Denmark) Qaqortoq 003311000 - -
(cont.)
Paamiut 62-00N 49-43W 250
Ikerasassuaq 60-04N 43-10W 220
Simiutaq 60-41N 46-36W 250
Ammassilik 003314000 65-36N 37-38W 280
Mexico Tampico 003450110 22-13N 97-52W 150 MRCC Ciudad
Madero
Netherlands Curaçao (Seru Gracia) 003061000 12-20N 69-08W 400 JRCC Curaçao
Antilles
United States Boston 003669991 41-39N 70-30W 200 RCC Boston
Chesapeake 003669995 36-44N 76-01W 200 RCC Norfolk
Miami 003669997 25-37N 80-23W 200 RCC Miami
New Orleans 003669998 29-53N 89-57W 200 RCC New Orleans
VI Argentina Argentina Radio 007010111 34-36S 58-28W 200 MRCC Buenos
Aires
Mar del Plata 007010221 38-03S 57-32W 150 MRCC Puerto
Comodoro Rivadavia 007010008 45-51S 67-25W 150 Belgrano
Rio Gallegos 007010010 51-37S 69-03W 150 MRCC Ushuaia
San Blas 007010006 40-33S 62-14W 150 MRSC Bahia
Blanca
Uruguay Montevideo 007703870 - - MRCC Montevideo
Armada Radio 34-56S 56-09W 100
VIII India Port Blair 004194409 11-41N 92-46E 200 MRCC Port Blair
Porbandar 004192202 21-38N 69-37E 200 MRCC Mumbai
Haldia 004194404 22-02N 88-06E 200 MRCC Chennai
Mandapam 004194406 09-17N 79-05E 200
Daman 004192201 20-25N72-52E 200 MRCC Mumbai
Mauritius Mauritius Radio 006452700 - - MRCC Mauritius
Cassis 20-12S 57-28E 150
Myanmar Yangon (Rangoon) 005060100 16-42N 96-17E 100 MRCC Yangon
(Burma)
IX Egypt Quseir 006221112 26-07N 34-17E 200 RCC Cairo
Jordan Aqaba 004381234 29-33N 34-59E 350 Harbor Master
Aqaba
Kuwait Kuwait Radio 004472188 29-22N 47-59E N.I.
Pakistan Karachi 004634060 24-52N 67-01E 250 MRCC Karachi
Saudi Arabia Jiddah 004030000 21-23N 39-11E 500 RCC Jiddah
XI China Basuo 004123600 19-06N 108-37E 100 MRSC Basuo
Beihai 004123400 21-29N 109-04E 100 MRSC Beihai
Dalian 004121300 38-50N 121-31E 100 MRCC Liaoning
Fuzhou 004122600 26-01N 119-18E 100 MRCC Fujian
Guangzhou 004123100 23-08N 113-29E 100 MRCC Guangdong
Lianyungang 004122300 34-42N 119-18E 100 MRCC
Lianyungang
Ningbo 004122400 30-01N 121-30E 100 MRSC Ningbo
4 - 86

Area (NM) RCC
XI China (cont.) Qingdao 004122200 36-02N 120-28E 100 MRSC Qingdao
Sanya 004123700 18-14N 109-30E 100 MRSC Sanya
Shanghai 004122100 31-07N 121-33E 100 MRCC Shanghai
Shantou 004123200 23-21N 116-40E 100 MRSC Shantou
Tianjin 004121100 39-03N 117-25E 100 MRCC Tianjin
Wenzhou 004122500 28-02N 120-39E 100 MRSC Wenzhou
Xiamen 004122700 24-35N 118-06E 100 MRSC Xiamen
Yantai 004121400 37-32N 121-22E 100 MRSC Yantai
Zhanjiang 004123300 21-10N 110-22E 100 RSC Zhanjiang
East Timor Dili 005250015 08-33S 125-34E 100 MRSC Kupang
Indonesia Amboina (Ambon) 005250006 03-41S 128-11E 100 MRSC Amboina
Balikpapan 005250009 01-16S 116-49E 100 MRSC Balikpapan
Batu Ampar 005250012 01-09N 104-00E 100 MRSC Tanjung
Pinang
Belawan 005250003 03-46N 98-41E 100 MRSC Medan
Benoa 005250014 08-44S 115-12E 100 MRSC Denpasar
Biak 005250031 01-12S 136-05E 100 MRCC Biak
Bitung 005250005 01-26N 125-10E 100 MRSC Menado
Cilacap 005250030 07-45S 109-02E 100 MRCC Jakarta
Dumai 005250004 01-39N 101-26E 100 MRSC Pekanbaru
Fak-Fak 005250026 02-56S 132-17E 100 MRSC Sorong
Jakarta 005250000 06-07S 106-51E 100 MRCC Jakarta
Jayapura 005250007 02-31S 140-43E 100 MRSC Jayapura
Kendari 005250019 03-58S 122-34E 100 MRCC Ujung
Pandang
Kupang 005250010 10-12S 123-37E 100 MRSC Kupang
Lembar 005250022 08-43S 116-04E 100 MRSC Denpasar
Makassar 005250002 05-06S 119-26E 100 MRCC Ujung
Pandang
Manokwari 005250023 00-51S 134-04E 100 MRCC Biak
Merauke 005250021 08-28S 140-23E 100 MRSC Merauke
Panjang 005250013 05-28S 105-19E 100 MRSC Palembang
Pantoloan 005250018 00-39S 119-44E 100 MRSC Menado
Pontianak 005250016 00-01S 109-19E 100 MRSC Pontianak
Sanana 005250025 02-03S 125-38E 100 MRSC Amboina
Sei Kolak Kiang 005250029 00-51N 104-36E 100 MRSC Tanjung
Pinang
Semarang 005250008 06-59S 110-19E 100 MRCC Surabaya
Sibolga 005250028 01-44N 98-46E 100 MRSC Medan
Sorong 005250011 00-53S 131-18E 100 MRSC Sorong
Surabaya 005250001 07-11S 112-43E 100 MRCC Surabaya
Tahuna 005250024 03-36N 125-30E 100 MRSC Menado
Tarakan 005250017 03-17N 117-35E 100 MRSC Balikpapan
Ternate 005250020 00-47N 127-35E 100 MRSC Amboina
4 - 87

Area (NM) RCC
XI Japan Otaru 004310101 - - RCC Otaru
Shakotan 43-20N 140-32E 150
Hakodateyama 41-45N 140-43E 150
Kushiro 004310102 - - RCC Kushiro
Tokotan 43-00N 144-53E 150
Souyamisaki 45-31N 141-56E 150
Nemuro 43-21N 145-35E 100
Monbetsu 44-21N 143-22E 150
Shiogama 004310201 - - RCC Shiogama
Komagamine 38-18N 141-32E 150
Same 40-29N 141-37E 150
Kamaishi 39-16N 141-54E 150
Akita 39-44N 140-04E 150
Yokohama 004310301 - - RCC Yokohama
Chikura 34-56N 139-56E 150
Chosi 35-44N 140-52E 150
Shimoda 34-40N 138-57E 150
Nagoya 004310401 - - RCC Nagoya
Asamagatake 34-27N 136-49E 150
Tanabe 004310502 33-43N 135-24E 150 RCC Kobe
Kochi 004310503 - -
Tosayama 33-36N 133-32E 150
Kobe 004310501 - -
Senzan 34-22N 134-50E 60
Hiroshima 004310601 - - RCC Hiroshima
Noro 34-15N 132-40E 60
Moji 004310701 - - RCC Kitakyushu
Yukawayama 33-52N 130-33E 150
Wakayama 33-11N 131-44E 60
Mokkoku 34-08N 129-12E 150
Sasebo 004310702 - -
Ishimoriyama 33-14N 129-44E 150
Maizuru 004310801 - - RCC Maizuru
Sorayama 35-33N 135-25E 150
Nawa 35-31N 133-32E 150
Niigata 004310901 37-54N 139-03E 150 RCC Niigata
Kagoshima 004311001 - - RCC Kagoshima
Yoko-o 31-19N 130-49E 150
Aburatsu 31-35N 131-25E 150
Naze 28-23N 129-30E 100
Naha 004311101 - RCC Naha
Tamagutsuku 26-09N 127-46E 150
Ishigaki 004311102 - -
Miyara 24-21N 124-12E 150
4 - 88

Area (NM) RCC
XI Malaysia Pinang - - - MRCC Port Klang
Kuantan 005330008 04-06N 103-23E 200
Kuching 005330011 01-49N 109-46E 200
Kota Kinabalu 005330013 05-57N 116-02E 200
Permatang Pauh 005330002 05-22N 100-18E 200
Republic of Inchon Maritime Police 004401001 37-30N 126-30E 120 RCC Inchon
Korea Donghae Maritime Police 004401002 37-31N 129-07E 120 RCC Donghae
Mokpo Maritime Police 004401003 34-46N 126-23E 120 RCC Mokpo
Busan Maritime Police 004401004 35-07N 129-02E 120 RCC Busan
Cheju Maritime Police 004401005 33-21N 126-49E 120 RCC Cheju
Inchon 004400001 37-34N 126-41E 120 RCC Inchon
Kangnung 004400601 37-45N 128-53E 120 RCC Donghae
Mokpo 004400301 34-48N 126-30E 120 RCC Mokpo
Busan 004400101 35-06N 129-03E 120 RCC Busan
Seoul 004400002 37-29N 128-43E 120 RCC Donghae
Taiwan Chi-lung (Keelung) 004162019 - -
Chi-lung 25-08N 121-45E 97
Hua-lien (Rx) 23-53N 121-35E 100
Linyuan 22-29N 120-24E 97
Sanchih (Rx) 25-16N 121-28E 90
Taping Ting (Rx) 22-01N 120-42E 100
Yenliaoken 23-54N 121-36E 97
Yüanli (Rx) 24-26N 120-38E 90
Thailand Bangkok Radio 005671000 - - RCC Bangkok
(Nonthaburi)
Sriracha 13-06N 100-55E 162
Vietnam Ben Thuy 005742009 18-39N 105-42E 200 Cua Lo Port
Authority
Cua Ong (Cam Pha) 005742008 21-01N 107-22E 200 Quang Ninh Port
Authority
Da Nang 005741999 16-04N 108-13E 200 Da Nang Port
Authority
Hai Phong 005741996 20-52N 106-41E 200 Hai Phong Port
Authority
Ho Chi Minh City 005741993 10-45N 106-43E 200 Saigon Port
Authority
Hon Gai (Quang Ninh) 005742006 20-57N 107-04E 200 Quang Ninh Port
Authority
Hue 005742010 16-33N 107-38E 200 Thien Hue Port
Authority
Mong Cai 005742007 21-32N 107-58E 200 Quang Ninh Port
Authority
Hong Kong Hong Kong Maritime 004773500 22-12N 114-15E 200 MRCC Hong Kong
(Associate Rescue
Member of Mt. Butler 22-16N 114-12E 200
IMO)
4 - 89

Area (NM) RCC
XII Mexico Mazatlan 003450810 23-10N 106-27W 150 MRCC Mazatlan
United States Point Reyes 003669990 37-56N 122-44W 200 RCC Alameda
Kodiak 003669899 57-46N 152-34W 150 RCC Juneau
Honolulu 003669993 21-26N 158-09W 200 RCC Honolulu
XIII Russian Yuzhno-Sakhalinsk 002733733 - - MRSC Yuzhno-
Federation Nevelsk (Rx) 46-39N 141-52E 165 Sakhalinsk
Seleznevo (Tx) 46-37N 141-50E 165
Vladivostok 002734412 42-45N 133-02E 1504 MRCC Vladivostok
XIV Fiji RCC Suva 005201100 18-07S 178-25E 200 RCC Wellington
RCC Funafuti
RCC Nadi
Nat. Surv. Center
Samoa
Mar. Div. Tarawa
RCC Canberra
XV Chile Arica 007250010 18-29S 70-19W 180 MRSC Iquique
Iquique 007250020 20-12S 70-06W 180
Antofagasta 007250050 23-40S 70-24W 180
Caldera 007250080 27-04S 70-49W 180 MRSC Valparaiso
Isla de Pascua 007250100 27-11S 109-25W 180
Coquimbo 007250110 29-56S 71-20W 180
Valparaiso 007251860 33-04S 71-36W 180
San Antonio 007250140 33-34S 71-37W 180
Juan Fernandez 007250130 33-37S 78-49W 180
Talcahuano 007250170 36-37S 73-04W 180 MRSC Talcahuano
Puerto Montt 007250230 41-39S 73-10W 180 MRSC Puerto
Aysen 007250300 45-24S 72-43W 180 Montt
San Pedro 007250320 47-42S 74-53W 180 MRSC Punta
Bahia Felix 007250370 52-44S 73-46W 180 Arenas
Punta Arenas 007250380 53-09S 71-02W 180
Punta Delgada 007250390 52-27S 69-33W 180
Puerto Williams 007250420 54-56S 67-36W 180
XVI Peru Paita 007600121 05-05S 81-07W 200 MRCC Paita
Callao 007600125 12-03S 77-09W 200 MRCC Callao
Mollendo 007600129 17-01S 72-01W 200 MRCC Mollendo
1 White Sea (Beloye More) to 66-00N.

2 MF DSC stations operated by Hellenic Coast Guard.
3 MF DSC stations owned by Hellenic Coast Guard, using ship station MMSI numbers.
4 150nm radius from 42-45N 133-02E starting at Korean coast to 42-33N 136-25E to Cape of Olarovskiy.
4 - 90
LIST OF OPERATIONAL HF DSC COAST STATIONS FOR SEA AREAS A3 AND A4

HF DSC Coast Station

NAV/MET Country Name MMSI Position Frequency Associated
Area Band1 RCC
I Denmark Lyngby 002191000 55-50N 11-25E 4,6,8,12,16 MHz SOK, Aarhus
Iceland Reykjavik 002516200 64-05N 21-51W 4,6,8,12,16 MHz MRCC Oceanic
II Ghana Tema 006270000 05-37N 00-00 4,6,8,12,16 MHz Harbor Master’s
Office Accra
Spain Madrid (CCR) 002241078 40-22N 03-17W 8,12 MHz MRCC Madrid
MRCC Madrid* 002241008 - 8,12 MHz
III Bulgaria Varna 002070810 43-04N 27-46E 4 MHz MRCC Varna
Cyprus Cyprus 002091000 35-03N 33-17E 4,8,16 MHz RCC Larnaca
Egypt Alexandria 006221111 31-12N 29-52E 4,6,8,12,16 MHz RCC Cairo
Greece Olympia 002371000 37-36N 21-29E 4,6,8,12,16 MHz JRCC Piraeus
Piraeus JRCC2 237673000 37-58N 23-40E
Aspropirgos2 002391000 38-02N 23-35E
Romania Constanta 002640570 44-07N 28-35E 4,6,8,12,16 MHz Constanta Harbor
Master
Spain Madrid (CCR) 002241078 40-22N 03-17W 8,12 MHz MRCC Madrid
MRCC Madrid* 002241008 - 8,12 MHz
Turkey Istanbul 002711000 40-59N 28-49E 4,6,8,12,16 MHz MRCC Ankara
IV Canada Iqaluit 003160023 63-44N 68-33W 4,6,8,12,16 MHz RCC Trenton3
Resolute (Rx) 74-45N 94-58W
United Boston 003669991 41-39N 70-30W 4,6,8,12,16 MHz Atlantic SAR
States Chesapeake 003669995 36-44N 76-01W Coordinator (RCC
Norfolk)
Miami 003669997 25-37N 80-23W
New Orleans 003669998 29-53N 89-57W
V Brazil Manaus 007100003 03-07S 59-55W 4,6,8,12,16 MHz MRCC Brazil (Rio
Recife 007100002 08-04S 34-55W de Janeiro)
Rio 007100001 22-58S 43-41W
VI Argentina Argentina Radio 007010111 34-36S 58-28W 4,6,8,12,16 MHz MRCC Buenos
Comodoro 007010008 45-51S 67-25W Aires
Rivadavia
Mar del Plata 007010003 38-03S 57-32W MRCC Puerto
Belgrano
Rio Gallegos 007010010 51-37S 65-03W MRCC Ushuaia
Uruguay Montevideo 007703870 34-56S 56-09W 4,6,8,12,16 MHz MRCC
Montevideo
VII South Cape Town 006010001 33-40S 18-43E 4,6,8,12,16 MHz MRCC Cape Town
Africa
VIII India Port Blair 004194409 11-41N 92-46E 4,6,8,12,16 MHz MRCC Port Blair
Porbandar 004192202 21-38N 69-37E MRCC Mumbai
Haldia 004194404 22-02N 88-06E MRCC Chennai
Mandapam 004194406 09-17N 79-05E
*NOTE: The primary responsibility for the receipt of HF DSC distress alerts for Spain is carried out via Madrid (CCR) Radio.
The HF DSC facility maintained at MRCC Madrid is only complementary to the Coast Radio Stations network.
4 - 91
Area Band1 RCC
VIII India Daman 004192201 20-25N 72-52E 4,6,8,12,16 MHz MRCC Mumbai
(cont.)
Myanmar Yangon (Rangoon) 005060100 16-42N 96-17E 4,6,8,12,16 MHz MRCC Yangon
(Burma)
IX Kuwait Kuwait Radio 004472188 29-22N 47-59E 4,6,8,12,16 MHz
Pakistan Karachi 004634060 24-52N 67-01E 4,6,8,12,16 MHz MRCC Karachi
X Australia RCC Australia 005030331 - - RCC Australia
Charleville 26-20S 146-16E 4,6,8,12,16 MHz
Wiluna 26-21S 120-34E
XI China Shanghai 004122100 31-06N 121-32E 4,6,8,12,16 MHz MRCC Shanghai
Indonesia Amboina (Ambon) 005250006 03-41S 128-10E 4,6,8 MHz MRCC Ujung
Pandang
Balikpapan 005250009 01-16S 116-49E 8 MHz MRCC Surabaya
Belawan 005250003 03-46N 98-41E 4,6,8,12,16 MHz MRCC Jakarta
Bitung 005250005 01-26N 125-10E 4,6,8,12,16 MHz MRCC Ujung
Pandang
Dumai 005250004 01-41N 101-27E 4,6,8,12,16 MHz MRCC Jakarta
Jakarta 005250000 06-07S 106-51E 4,6,8,12,16 MHz
Jayapura 005250007 02-30S 140-43E 4,6,8,12,16 MHz MRCC Biak
Kupang 005250010 10-09S 123-34E 8 MHz MRCC Ujung
Makassar 005250002 05-06S 119-25E 4,6,8,12,16 MHz Pandang
Semarang 005250008 06-56S 110-25E 8 MHz MRCC Surabaya
Sorong 005250011 00-53S 131-00E 8 MHz MRCC Biak
Surabaya 005250001 07-12S 112-44E 4,6,8,12,16 MHz MRCC Surabaya
Cilacap 005250030 07-45S 109-02E 8 MHz MRCC Jakarta
Merauke 005250021 08-28S 110-23E 8 MHz MRSC Merauke
Japan Tokyo Sea Patrol 004310001 35-40N 139-45E 4,6,8,12,16 MHz RCC Otaru
Radio RCC Shiogama
RCC Yokohama
RCC Nagoya
RCC Kobe
RCC Hiroshima
RCC Kitakyushu
RCC Maizuru
RCC Niigata
RCC Kagoshima
RCC Naha
Republic of Inchon Maritime 004401001 37-30N 126-30E 4,6,8,12,16 MHz RCC Inchon
Korea Police
Donghae Maritime 004401002 37-31N 129-07E RCC Donghae
Police
Mokpo Maritime 004401003 34-46N 126-23E RCC Mokpo
Police
Busan Maritime 004401004 35-07N 129-02E RCC Busan
Police
Cheju Maritime 004401005 33-21N 126-49E RCC Cheju
Police
Inchon 004400001 37-34N 126-41E RCC Inchon

Area Band1 RCC
XI Republic of Kangnung 004400601 37-45N 128-53E 4,6,8,12,16 MHz RCC Donghae
Korea Mokpo 004400301 34-48N 126-30E RCC Mokpo
(cont.)
Busan 004400101 35-06N 129-03E RCC Busan
Seoul 004400002 37-29N 128-43E RCC Donghae
Taiwan Chi-lung 004162019 25-08N 121-45E 4,6,8,12,16 MHz
(Keelung)
Thailand Bangkok Radio 005671000 13-34N 100-39E 4,6,8,12 MHz RCC Bangkok
(Nonthaburi)
Vietnam Ho Chi Minh City 005741993 10-46N 106-40E 8 MHz Saigon Port
Authority
Hai Phong 005741996 20-52N 106-42E 4,6,8,12,16 MHz Hai Phong Port
Authority
Da Nang 005741999 16-04N 108-13E 6,8 MHz Da Nang Port
Authority
Hong Kong Hong Kong 004773500 22-12N 114-15E 4,6,8,12,16 MHz MRCC Hong
(Associate Maritime Rescue Kong
Member of
IMO)
XII United Point Reyes 003669990 37-56N 122-44W 4,6,8,12,16 MHz Pacific SAR
States Kodiak 003669899 57-46N 152-34W Coordinator (RCC
Alameda)
Honolulu 003669993 21-26N 158-09W
XIV Fiji RCC Suva 005201100 18-08S 178-26E 4,6,8,12,16 MHz RCC Funafuti
RCC Tonga
RCC Nadi
Nat. Surv. Center
Samoa
Mar. Div. Tarawa
RCC Canberra
New Taupo Maritime 005120010 38-52S 176-26E 4,6,8,12,16 MHz RCC New Zealand
Zealand Radio
XV Chile Antofagasta 007250050 23-40S 70-25W 4 MHz MRSC Iquique
Isla de Pascua 007250100 27-11S 109-25W MRSC Valparaiso
Valparaiso 007251860 33-01S 71-39W 4,6,8,12,16 MHz
Talcahuano 007250170 36-42S 73-06W 4 MHz MRSC Talcahuano
Puerto Montt 007250230 41-47S 73-53W MRSC Puerto
Montt
Punta Arenas 007250380 53-10S 70-54W 4,8 MHz MRSC Punta
(Magallanes) Arenas
XVI Peru Paita 007600121 05-05S 81-07W 8 MHz MRCC Paita
Callao 007600125 12-03S 77-09W MRCC Callao
Mollendo 007600129 17-01S 72-01W MRCC Mollendo
1 The following frequencies are allocated for HF DSC distress and safety communication by Radio Regulation (Article N38):
4 MHz = 4207.5 kHz 6 MHz=6312 kHz 8 MHz = 8414.5 kHz 12 MHz = 12577 kHz 16 MHz = 16804.5 kHz
2 Hellenic Coast Guard, for reasons of additional safety only, keeps 24 hour watch on HF DSC frequencies, using its own
stations.
3 Operational during navigation season only, approximately June 25 to November 30.
4 - 93
PART II
410A. Requests for U.S. Navy Assistance in should call NAVCOMTELSTA Guam for direct patching
Emergency Situations via FM non-secure voice satellite communications.
– HF Equipped Ships: Upon establishing HF voice
In view of the current and continuing threat of possible communications with the HF public coast radio station
terrorist activity, seizure by hostile military forces, or serving the merchant ship, request that the marine
piracy against U.S. flag and effective U.S. controlled operator place a call to the appropriate Fleet Commander
(EUSC) merchant ships on the high seas, the requirement OPCONCEN for assistance, giving information in the
exists for the establishment and promulgation of prescribed format.
emergency call-up procedures between U.S. merchant If a voice call via the coast station marine operator
ships and units of the U.S. Navy for protection and cannot be completed to the Fleet Commander
assistance. OPCONCEN, the call should be placed to the closest
The following situations warrant immediate use of NCTAMS JFTOC or NAVCOMTELSTA, USAF
emergency communications to request assistance from the Communications Station, or USCG Communications
U.S. Navy: Station for relay to the appropriate Navy Command
– Attacks, threats of attack, or other hostile actions by Center.
military forces. Warning shots and/or observation of If a merchant ship uses U.S. military HF facilities
mining operations in international waters are included. (Navy, Air Force, or Coast Guard Communications
– Harassment by military forces. Threats or attempts of Stations) for a direct emergency voice communication
boarding and seizure or hostage taking are included. request for assistance, the message will be relayed by the
– Terrorist attack (or threat) or seizure. receiving facility to the appropriate Navy OPCONCEN
– Piracy. for action. A listing of available HF frequencies by
– Request for rescue in the event of natural disaster if no military facility and area is in Appendix B.
acknowledgment is received through use of established Ship to ship communications may be initiated by use
distress and safety communications procedures. of 2182 kHz or one of the Navy HICOM or tactical HF
COMMUNICATIONS PROCEDURES: Emergency frequencies listed in Appendix B. However, Fleet
communications from merchant ships in crisis situations Commander OPCONCEN approval is necessary prior to
essentially involve the reporting of incidents and requests establishment of extended ship to ship communications
for U.S. Navy protection or assistance on a real time basis. between merchant ships and U. S. Navy afloat units.
Requests for assistance will be submitted to Navy Fleet – VHF Communications: 156.8 MHz (Ch. 16) is
Command Centers by either commercial satellite recommended for use by ships at line-of-sight or
(Inmarsat) or HF media. Commercial telephone numbers extended line-of-sight (15-30 miles) communications
for Fleet Command Centers, Navy Communications ranges.
Stations, and USCG Communications Stations are listed in – Direct Ship to Ship Communications Connectivity: If a
Appendix A. Fleet Commander OPCONCEN considers it essential for
– Inmarsat Equipped Ships: Direct dial the appropriate Navy a merchant ship to establish direct non-secure voice
Fleet Commander Operations Control Center communications with U.S. Navy surface units, the
(OPCONCEN) to report the situation and request U. S. merchant ship will be directed to call the appropriate
Navy assistance. If the direct dial attempt is unsuccessful, NCTAMS or NAVCOMTELSTA Guam for a patch to be
place a call via Inmarsat operator to the appropriate Navy made between the commercial media (Inmarsat, HF) and
Command Center. the Navy’s Fleet Satellite Communications
If the call cannot be completed to the Fleet Commander, (FLTSATCOM) system to a Navy ship by use of a
dial the appropriate Naval Computer and conference bridge. If direct HF voice connectivity is
Telecommunications Area Master Station (NCTAMS) required, the merchant ship and Navy unit will be
Joint Fleet Telecommunications Operations Center assigned an appropriate frequency for coordination
(JFTOC) or Naval Computer and Telecommunications purposes.
Station (NAVCOMTELSTA) for patching relay to the – COMSC Charter Ships: Except in crisis situations, U.S.
Fleet Commander OPCONCEN. If direct dial effort is merchant ships under charter to COMSC would continue
unsuccessful, place call to the communications station via to use the procedures stated in the effective edition of
the Inmarsat operator. MSC Communications Policies and Procedures Manual
If contact cannot be made with the area NCTAMS (CPPM).
JFTOC or NAVCOMTELSTA, a merchant ship should – Billing: Billing will be in accordance with tariff
request the Inmarsat operator to place the call to USCG regulations applicable to Inmarsat and HF public coast
Area Operations Center (OPCEN) for notification to radio stations.
Fleet Commander. U.S. flag/EUSC ships operating in the NAVY ACTION: Upon receipt of emergency
North Arabian Sea and Persian Gulf area requiring transmission by the Fleet Commander OPCONCEN, the
assistance from U. S. Navy ships of COMUSNAVCENT Navy will determine what action will be taken in response,
e.g., dispatch of forces, establishing direct communications TO COMPACFLT OPCONCEN

between the merchant ship and a Navy afloat unit, or A. SS NOGALES
providing guidance. Decision factors affecting Navy B. KCSD/1509999
response are contingent upon U. S. Navy units available, C. LAT. 05N, LONG. 105E
proximity of U. S. Navy units to the merchant ship, and/or D. 231800Z JAN 89
rules of engagement applicable to the theater of operations. E. SHIP UNDER ATTACK BY MACHINE GUN AND
CALL-UP PROCEDURES: The following voice call-up RIFLE FIRE BY SMALL PATROL CRAFT AND BEING
procedure should be used by merchant ships if an indefinite BOARDED BY PIRATES OR TERRORISTS.
call-up address is to be employed: PERSONNEL CASUALTIES ON DECK.
F. REQUEST IMMEDIATE ASSISTANCE.
ANY NAVY/AIR FORCE/COAST GUARD STATION SHAR: The guidance provided above does not eliminate
GUARDING THIS NET, THIS IS SS EXAMPLE, the need for submission of SHARs by merchant ships to
EMERGENCY MESSAGE FOLLOWS. NGA. Emergency procedures provide for transmission of a
request for assistance to precede the SHAR.
If the merchant ship is calling a specific Navy, Air Force, TESTING OF PROCEDURES/FACILITIES: U.S. Navy
or Coast Guard station ashore, the voice calls listed in and Air Force HF voice communications nets are dedicated
Appendix B apply. Merchant ships are cautioned that Navy to command and control of military units and air traffic
shore stations and/or afloat units guarding HICOM or other control. These nets are not to be used for training purposes
tactical HF nets may respond with an alphanumeric daily unless specifically designated by the Services and/or
changing call sign and advise the merchant ship to send operational commanders for use by merchant ships as part
traffic, and will not reveal the Navy unit’s name to prevent of a scheduled exercise. Commercial communications
compromise of the call sign. systems (Inmarsat, HF) aboard ship may be used for
Procedures for emergency incident reporting and/or personnel training and equipment check-out procedures by
requests for U. S. Navy assistance emphasize the use of merchant ships by placing calls to the Fleet Commander
voice communications between the merchant ship and the OPCONCEN. Tests should be initiated from the merchant
commands/facilities ashore and afloat as defined in ship by dialing the appropriate Fleet Commander
Appendix A. Frequencies for HF voice and radiotelex OPCONCEN for the ocean area involved. Shipping line
(NBDP) communications are listed in Appendix B. owners are required to fund costs incurred for tests
Inmarsat equipped ships should file voice or telex traffic initiated by their ships. The Fleet Commander will
via appropriate earth stations. Emergency or distress determine if the calls should be extended to U. S. Navy
messages received by non-U.S. Navy facilities will be afloat units via the FLTSATCOM interface at the
immediately forwarded to the appropriate Navy Command NCTAMS or NAVCOMTELSTA Guam. The Fleet
Center. Commander may desire to use HF HICOM for exercise
MESSAGE FORMAT: The following format is and training with COMSC chartered merchant ships as
recommended to provide for brevity and uniformity in well as U.S. flag merchant ships not under Navy control
reporting procedure: during Naval Cooperation and Guidance for Shipping
– To Fleet Commander, Operations Control Center (as (NCAGS) exercises or for test prior to in-chop.
appropriate). In addition to requesting direct assistance from the U.S.
– Name of ship. Navy, mariners should report acts of terrorism to the
– International radio call sign and Inmarsat ID. following:
– Position (latitude/longitude). – In the waters and ports of the United States, the FBI and
– Date and time (GMT). the USCG.
– Brief description (military attack, seizure, terrorist – In areas outside U.S. territorial limits, the nearest U.S.
attack, mining, piracy, natural disaster). Consulate Office (Regional Security Officer), the U. S.
State Department (Operations Center), at (1) 202-
Example: 647-1512, and NGA.
4 - 95
APPENDIX A
OCEAN AREAS AND COMMAND CENTERS/COMMUNICATIONS FACILITIES
The following provides a listing of U.S. Navy and Coast Guard Command Centers and Communications Stations,
showing area of command and/or communications coverage:
Ocean Area - Navy Operations Control Centers and Communications Facilities, Telephone Number
USCG Command Centers and Communications Facilities
Mediterranean, Baltic, Gulf of Guinea
UKMTO (United Kingdom Maritime Trade Operations) 971505523215/6007

MARLO (Maritime Liaison Office) Bahrain (24x7) 973-3940-1395
JFTOC NAPLES IT (24x7) 39-081-568-6057
COMLANTAREA COGARD PORTSMOUTH VA (1) 757-398-6700, Telex 127775
CNE-CNA-CGF Maritime Operations Center (Battle Watch Floor) 39-081-568-4551/4552
Atlantic, Caribbean, Atlantic Approaches to Panama Canal, North Sea
COMUSFLTFORCOM OPCONCEN NORFOLK VA (1) 757-836-5397

NCTAMS LANT JFTOC NORFOLK VA (1) 757-444-2124/4182
COGARD CAMSLANT CHESAPEAKE VA (1) 757-421-6240/6247
Eastern Pacific, Mexico, Central America
COMPACFLT OPCONCEN PEARL HARBOR HI (1) 808-471-3201/5200

NCTAMS PAC JFTOC HONOLULU HI (1) 808-653-5377/1760/0090
NAVCOMTELSTA SAN DIEGO CA (1) 619-545-8928
COMPACAREA COGARD ALAMEDA CA (1) 510-437-3701, Telex 172343
COGARD COMMSTA KODIAK AK (1) 907-487-5778
COGARD CAMSPAC PT REYES CA (1) 415-669-2047
Mid Pacific, Northern Pacific, Pacific Approaches to Panama Canal, South

America

NCTAMS PAC JFTOC HONOLULU HI (1) 808-653-5377/1760/0090
NAVCOMTELSTA SAN DIEGO CA (1) 619-545-8928
COMPACAREA COGARD ALAMEDA CA (1) 510-437-3701, Telex 172343
COGARD CAMSPAC PT REYES CA (1) 415-669-2047
Western Pacific, South Pacific, Southeast Asia, Straits of Malacca, Sea of Japan,
Indian Ocean

NAVCOMTELSTA GUAM 671-355-5513/5326/5327/5328
NAVCOMTELSTA FAR EAST 81-311-743-7510
4 - 96
Ocean Area - Navy Operations Control Centers and Communications Facilities, Telephone Number
USCG Command Centers and Communications Facilities
Persian Gulf, Red Sea
COMUSNAVCENT/BATTLEWATCH CAPTAIN BAHRAIN 973-17-85-3879/4577

NAVCOMTELSTA BAHRAIN 973-17-85-4185
(For Ships in the Persian Gulf)

NAVCOMTELSTA BAHRAIN 973-17-85-4185
(For Ships in the Red Sea)
JFTOC NAPLES IT 39-081-568-6057

Navy Communications Facilities With FLTSATCOM Interface Capability:
Upon direction from Fleet Commander OPCONCEN, calls will be placed to the following Navy Communications
Stations with conference bridge capability to establish unclassified ship to ship voice connectivity with Navy afloat units
via Navy FLTSATCOM:
NCTAMS LANT NORFOLK VA (1) 757-445-9988/9989

JFTOC NAPLES IT 39-081-568-6141
NCTAMS PAC HONOLULU HI (1) 808-653-0321
4 - 97
APPENDIX B
HIGH FREQUENCIES GUARDED BY AIR FORCE, NAVY, COAST GUARD,

AND COMMERCIAL STATIONS
AIR FORCE
Area Control Station Voice Call SSB (carrier) Frequencies Hours of Watch
(in kHz) (GMT)
Southwest Pacific, ANDERSEN AFB ANDERSEN 6738 0200-1200

Micronesia GUAM 8967 24 hr.
11176 24 hr.
13201 24 hr.
18002 2200-0700
Northwest Pacific, Sea YOKOTA AB JA YOKOTA 4747 1000-2100

of Japan, 6738 0900-2400
8967 24 hr.
11236 24 hr.
13201 2100-1000
18002 0001-0900
Mid Pacific HICKAM AFB HI HICKAM 3144 0600-1700

6738 0400-0900
8964 24 hr.
11179 24 hr.
13201 1700-0600
18002 0001-0900
Northern Pacific ELMENDORF AFB ELMENDORF 6738 24 hr.

AK 8989 24 hr.
11176 24 hr.
13201 24 hr.
Eastern Pacific, West MCCLELLAN AFB MCCLELLAN 4746 0400-1600

Coast Continental U.S., CA 6738 0400-1600
Mexico 8989 24 hr.
11239 24 hr.
15031 1600-0400
18002 1600-0400
Central and South ALBROOK AB PM ALBROOK 5710 0200-1200

America, (Atlantic and 6683 0001-1400
Pacific), Cuba, 8993 24 hr.
Hispaniola 11176 24 hr.
15015 1200-0200
18019 0900-2400
4 - 98
(in kHz) (GMT)
Northern Atlantic, East MACDILL AFB FL MACDILL Northern North

Coast Continental U.S., Atlantic
Canada, Caribbean, 5688 0001-1400
Gulf of Mexico 8989 24 hr.
11179 0900-2400
13244 0900-2400
18019 0900-2400
Central North
Atlantic
4746 0001-0900
6750 0001-0900
11179 0900-2400
11246 24 hr.
13244 0900-2400
Southern North
Atlantic
4746 0001-0900
6750 0001-0900
8993 24 hr.
11246 24 hr.
13244 0900-2200
Gulf of Mexico
4746 0001-0900
6750 0002-0900
8993 24 hr.
11246 24 hr.
Northern North THULE AB THULE 6738

Atlantic, Canada, GREENLAND 8967
Greenland 13201 (slight delay in
answering)
Eastern North Atlantic, CROUGHTON AB, CROUGHTON 3076 2300-0500

Iceland, North Sea, UK 5703 2100-0800
Baltic Sea 6750 24 hr.
9011 0500-2300
11176 24 hr.
13214 0800-2100
Eastern North Atlantic, LAJES AB PO LAJES 3081 2100-1000

Spain, Western (Acores) 4746 2100-1000
Mediterranean, North 6750 24 hr.
Africa 8967 24 hr.
11226 1000-2100
13244 1000-2100
4 - 99
(in kHz) (GMT)
South Atlantic, Cape of ASCENSION ASCENSION 6753 2000-0800

Good Hope, Western ISLAND 8993 24 hr.
Indian Ocean, Red Sea AUXILIARY AB 11176 1800-1000
13244 1000-1800
15015 0800-2000
Central and Eastern INCIRLIK AB TU INCIRLIK 6738 24 hr.

Mediterranean, Strait of 11176 24 hr.
Hormuz, Persian Gulf, 13244 24 hr.
Northern Red Sea 15015 24 hr.
4 - 100
NAVY
Area Control Station Voice Call SSB (carrier)

Frequencies (in kHz)
Mediterranean, NCTAMS EURCENT DET ROTA SP AOK 2200-0600

Eastern and NAVCOMTELSTA SICILY IT NSY Carrier Frequency: 6720
Northern North Designated afloat units “ANY NAVY Upper Sideband: 6721.5
Atlantic STATION
(COMUSNAVEUR THIS NET”
0600-2200
HICOM NET)
Carrier Frequency: 11255
Upper Sideband: 11256.5
Atlantic, Caribbean NCTAMS LANT NORFOLK VA NAM 24 hr.

(COMUSFLTFOR NCTAMS LANT DET KEY WEST FL NAR Carrier Frequency: 6687
COM) NAVCOMTELSTA PUERTO RICO PR NAU Upper Sideband: 6698.5
NAVCOMTELSTA KEFLAVIK IC NRK
HICOM Net Navy Command Centers Ashore “ANY NAVY 24 hr.

Designated afloat units STATION Carrier Frequency: 23287
THIS NET” Upper Sideband: 23288.5
Indian Ocean Voice NAVCOMTELSTA DIEGO GARCIA NKW 0200-1300

Net Designated afloat units “ANY NAVY Carrier Frequency: 23315
STATION Upper Sideband: 23316.5
THIS NET”
1300-0200
Western Pacific NAVCOMTELSTA GUAM NPN 24 hr.

HICOM Net NAVCOMTELSTA FAR EAST NDT Carrier Frequency: 6720
Designated afloat units “ANY NAVY Upper Sideband: 6721.5
STATION
THIS NET” Carrier Frequency: 11205


Eastern and Central NCTAMS PAC HONOLULU HI NPM 0600-1700
Pacific HICOM COMTHIRDFLEET “ANY NAVY Carrier Frequency: 4415.4
NAVCOMTELSTA SAN DIEGO CA STATION Upper Sideband: 4417.7
THIS NET”
24 hr.
Carrier Frequency: 8777.4
1700-0600
Carrier Frequency: 13156.4
4 - 101
COAST GUARD (HF RADIOTELEPHONE)
SSB (carrier) Frequencies (in kHz)

ITU
Area Station (Call Sign) Shore Ship Hours of Watch
Channel
(GMT)
Atlantic Boston MA (NMF) 424 4426 4134 2300-1100
601 6501 6200 24 hr.
816 8764 8240 24 hr.
1205 13089 12242 1100-2300
1625 17314 16432 on request
CAMSLANT 424 4426 4134 2300-1100

Chesapeake VA (NMN) 601 6501 6200 24 hr.
816 8764 8240 24 hr.
1205 13089 12242 1100-2300
1625 17314 16432 on request
Miami FL (NMA) 424 4426 4134 2300-1100

601 6501 6200 24 hr.
816 8764 8240 24 hr.
1205 13089 12242 1100-2300
1625 17314 16432 on request
New Orleans LA (NMG) 424 4426 4134 2300-1100

601 6501 6200 24 hr.
816 8764 8240 24 hr.
1205 13089 12242 1100-2300
1625 17314 16432 on request
Pacific Kodiak AK (NOJ) 4125 4125 24 hr.

424 4426 4134 on request
601 6501 6200 24 hr.
816 8764 8240 on request
1205 13089 12242 on request
1625 17314 16432 on request
CAMSPAC 424 4426 4134 24 hr.

Point Reyes CA (NMC) 601 6501 6200 24 hr.
816 8764 8240 24 hr.
1205 13089 12242 24 hr.
1625 17314 16432 on request
Honolulu HI (NMO) 424 4426 4134 0600-1800

601 6501 6200 24 hr.
816 8764 8240 24 hr.
1205 13089 12242 1800-0600
1625 17314 16432 on request
Guam (NRV) 601 6501 6200 0900-2100

1205 13089 12242 2100-0900
Note: Miami, Boston and New Orleans receive remoted to CAMSLANT Chesapeake (NMN). Honolulu and Guam receive
remoted to CAMSPAC Point Reyes (NMC).
4 - 102
COAST GUARD (HF RADIOTELEX)
This net provides for common medium and long range radioteletype communications between all ship stations and
COMMSTAs for safety and liaison traffic. Calling and working frequencies between shore and ships are in the paired
duplex frequency modes indicated below. Stations follow the indicated schedule for frequency guards. Any changes
wanted by area commanders to meet operational needs will be included in this schedule.
SITOR or NBDP (assigned) Frequencies (in kHz)

ITU
Area Station (Call Sign) Shore Ship Hours of Watch
Channel
(GMT)
Atlantic CAMSLANT 404 4212 4174 on request
Chesapeake VA (NMN) 604 6316 6264.5 2300-1100
Selcall: 1097 824 8428 8388 24 hr.
MMSI: 003669995 1227 12592.5 12490 24 hr.
1627 16819.5 16696.5 24 hr.
2227 22389.5 22297.5 1100-2300
Pacific Kodiak AK (NOJ) 407 4213.5 4175.5 HN

Selcall: 1106 607 6317.5 6266 24 hr.
MMSI: 003669899 807 8419.5 8379.5 HJ
CAMSPAC 412 4215.5 4178 on request

Point Reyes CA (NMC) 620 6323.5 6272.5 HN
Selcall: 1096 820 8426 8386 24 hr.
MMSI: 003669990 1242 12600 12497.5 on request
1620 16816.5 16693 HJ
2220 22386 22294 on request
Honolulu HI (NMO) 404 4212 4174 on request

Selcall: 1099 604 6316 6264.5 on request
MMSI: 003669993 827 8429.5 8389.5 24 hr.
1220 12589 12486.5 24 hr.
1627 16819.5 16696.5 on request
2227 22389.5 22297.5 HJ
Guam (NRV) 412 4215.5 4178 on request

Selcall: 1096 612 6319.5 6268.5 on request
MMSI: 003669994 812 8422 8382 HN
1212 12585 12482.5 24 hr.
1612 16812.5 16689 24 hr.
2212 22382 22290 HJ
Notes: (1) Selcall number is used for radiotelex (sitor). The Maritime Mobile Service Identity (MMSI) is used for
Digital Selective Calling (DSC) and may also be used for radiotelex.
(2) For radiotelex the frequencies listed are assigned. The carrier or dial frequency is located 1.7 kHz
below the assigned frequency.
(3) Honolulu and Guam are operated remotely by CAMSPAC Point Reyes (NMC).
(4) Time definitions:
HJ — Daytime (2 hours after sunrise until 2 hours before sunset, local time).
HN — Nighttime (2 hours before sunset until 2 hours after sunrise, local time).
4 - 103
RADIOTELEX SERVICES AVAILABLE
COMMAND EXPLANATION RESPONSE

OBS+ WEATHER OBSERVATION (message must be in MOM11+ MSG+
standard format)
AMV+ AMVER MESSAGE (message must be in standard MOM01+ MSG+
format)
MED+ MEDICAL EMERGENCIES (signals an alarm at the MOM07+ MSG+
coast station)
URG+ SHIPBOARD DISTRESS/EMERGENCIES (signals MOM20+ MSG+
an alarm at the coast station)
TFC+ MISCELLANEOUS ROUTINE MESSAGES MOM16+ MSG+
VES+ U.S. FISHERIES, POLLUTION OR OTHER MOM13+ MSG+
REQUIRED VESSEL REPORT
OPR+ OPERATOR ASSISTANCE
FREQ+ FREQUENCY GUARD SCHEDULE LIST
MSG+ DOWNLOADS SHORE-TO-SHIP MESSAGES
(limited to government vessels)
BRK+ BREAK OFF COMMUNICATIONS
HELP+ LIST OF AVAILABLE COMMANDS
COMMERCIAL STATIONS (HF RADIOTELEX/NBDP)
Frequencies (kHz)
Location Station (Call Sign) ITU Channel
Shore Ship
Mobile, Alabama, Mobile (WLO) 406 4213 4175
U.S.A. Selcall: 1090 606 6317 6265.5
MMSI: 003660003 806 8419 8379
Hours of watch: 24 hr. 810 8421 8381
815 8423.5 8383.5
1205 12581.5 12479
1211 12584.5 12482
1605 16809 16685.5
1615 16814 16690.5
1810 19685.5 18875
2215 22383.5 22291.5
2510 26105.5 25177.5
Republic, Washington, Republic (KKL) 2523.4 2523.4

U.S.A. Selcall: 1150 4016.4 4016.4
Hours of watch: 8183.4 8183.4
1700-0100 GMT 824 8429.4 8389.4
12104.4 12104.4
16345.4 16345.4
19685.4 18874.9
26105.4 25177.4
Notes: (1) Station WLO is part of the ShipCom Radio Network. Frequencies listed are assigned.
(2) Radiotelex frequencies listed for Station KKL are ARQ carrier center frequency. When
calling KKL ARQ, call for at least 60 seconds. KKL uses scanning transceivers on all
frequencies except 2522.0 kHz. Each channel is scanned for approximately 10 seconds.
(3) AMVER messages may be sent free of charge through any of the above coast radio
stations.
4 - 104
COMMERCIAL STATIONS (HF RADIOTELEPHONE)
SSB (carrier) Frequencies

Location Station (Call Sign) ITU Channel (in kHz)
Shore Ship
Marina del Ray, Marina del Ray (KNN) 416 4402 4110
California, U.S.A. Hours of watch: 24 hr. 814 8758 8234
1203 13083 12236
1616 17287 16405
2214 22735 22039
Mobile, Alabama, Mobile (WLO) 405 4369 4077

U.S.A. Hours of watch: 24 hr. 414 4396 4104
607 6519 6218
824 8788 8264
830 8806 8282
1212 13110 12263
1226 13152 12305
1607 17260 16378
1641 17362 16480
1807 19773 18798
2237 22804 22108
2503 26151 25076
Mobile, Alabama, Mobile (WCL) 403 4363 4071

1206 13092 12245
1601 17242 16360
2243 22822 22126
Republic, Washington, Republic (KKL) 421 4417 4125

U.S.A. Hours of watch: 606 6516 6215
1700-0100 GMT 821 8779 8255
1221 13137 12290
1621 17302 16420
1806 19770 18795
Seattle, Washington, Seattle (KLB) 417 4405 4113

1209 13101 12254
1624 17311 16429
Notes: (1) Stations KLB, KNN and WCL are part of the ShipCom Radio Network, operated
remotely from Mobile (WLO).
(2) AMVER messages may be sent free of charge through any ShipCom Radio Network
station.
4 - 105
COMMERCIAL STATIONS (HF DSC)
Frequencies (in kHz)

Location Station (Call Sign) ITU Channel
Shore Ship
Mobile, Alabama, Mobile (WLO) 4219 4208
U.S.A. MMSI: 003660003 6331 6312.5
8436.5 8415
12657 12577.5
16903 16805
FREQUENCY SELECTION GUIDE
Distance (NM)
Time at Coast (Local)
200-750 750-1500 >1500
0000 3-5 MHz 6-9 MHz 6-11 MHz
0400 3-5 MHz 4-7 MHz 6-9 MHz
0800 3-7 MHz 6-11 MHz 11-22 MHz
1200 4-7 MHz 8-13 MHz 13-22 MHz
1600 4-7 MHz 8-13 MHz 13-22 MHz
2000 3-7 MHz 6-11 MHz 11-22 MHz
4 - 106
LIST OF INMARSAT COAST EARTH STATIONS
NAV/MET Country Location Ocean Inmarsat Associated RCC

Area Area Satellite Service
I Netherlands Burum (Xantic) AOR-E -A,-B,-C,-E MRCC Den Helder
(12)
(LES ID x12 and AOR-E -C
x22) (22)
AOR-W -A,-B,-C,-E
(12)
AOR-W -C
(22)
IOR (12) -A,-B,-E
Norway Eik AOR-E -A,-B,-C MRCC Stavanger
AOR-W -A,-B,-C
IOR -A,-B,-C
Poland Psary AOR-E -A,-B,-C RCC Gdynia
IOR -A,-B,-C
United Kingdom Goonhilly AOR-E -A,-B,-C,-E MRCC Falmouth
AOR-W -A,-B,-C,-E
IOR -A,-B,-C
POR -A,-B,-C
II France Pleumeur-Bodou AOR-E -A MRCC Gris-Nez
AOR-W -A (MRCC Bremen for
Inmarsat-E)
IOR -A
POR -A
Aussaguel AOR-E -B,-C,-E
IOR -B,-C,-E
Portugal Sintra AOR-E -C MRCC Lisbon
III Greece Thermopylae AOR-E -A,-B,-C Piraeus JRCC
IOR -A,-B,-C
Italy Fucino AOR-E -A,-B,-C MRCC Roma
IOR -A,-B,-C
Turkey Ata AOR-E -A,-C MRCC Ankara
IOR -A,-C
Ukraine Odessa AOR-E -A
IOR -A
IV Canada Laurentides AOR-E -B RCC Halifax
AOR-W -B
United States Southbury AOR-E -A,-B,-C RCC Norfolk
AOR-W -A,-B,-C
V Brazil Tangua AOR-E -A,-B,-C Salvamar-Su Este;
Rio de Janeiro
VIII India Arvi IOR -A,-B,-C
IX Egypt Maadi AOR-E -A RCC Cairo
Iran Boumehen IOR -A,-C
Saudi Arabia Jiddah IOR -A RCC Jiddah
4 - 107
NAV/MET Country Location Ocean Inmarsat Associated RCC

Area Area Satellite Service
IX United Arab Emirates Towi Al Sawan IOR -B
X Australia Perth (Xantic) IOR (12) -C, MRCC Australia (Canberra)
(LES ID x12 and IOR (22) -A,-B,-C,-E
x22) POR (12) -A,-B,-C,-E
POR (22) -A,-B,-C,-E
XI China Beijing IOR -A,-B,-C MRCC China
POR -A,-B,-C
Indonesia Jatiluhur IOR -B
Japan Yamaguchi IOR -A,-B,-C RCC Yokohama
RCC Nagoya
RCC Kobe
RCC Hiroshima
RCC Kitakyushu
RCC Maizuru
RCC Niigata
RCC Kagoshima
RCC Naha
POR -A,-B,-C RCC Otaru
RCC Shiogama
Malaysia Kuantan IOR -A,-B MRCC Port Klang
Republic of Korea Kumsan IOR -A,-C RCC Inchon
POR -A,-C
Singapore Sentosa IOR -A,-B,-C Singapore Port Operations
POR -A,-B,-C Control Center
Thailand Nonthaburi IOR -B,-C RCC Bangkok
Vietnam Haiphong IOR -B,-C MRCC Viet Nam
Hong Kong (Associate Cape D’Aguilar IOR -A,-B MRCC Hong Kong
Member of IMO) POR -A,-B
XII United States Santa Paula POR -A,-B,-C,-E RCC Alameda
Southbury AOR-W -A,-B,-C RCC Norfolk
XIII Russian Federation Nakhodka POR -A MRCC Vladivostok
Nudol AOR-E -C SMRCC Moscow
IOR -C
4 - 108
LIST OF RESCUE COORDINATION CENTERS USING SHIP EARTH STATIONS
RCC SES DETAIL

NAV/MET Country Name Position ID Type Ocean Region
Area Accessed
I Estonia MRCC Tallinn 59-24N 24-40E 492480040 Inmarsat-C AOR-E
Finland RCC Turku 60-26N 22-15E 423002211 Inmarsat-C AOR-E
France MRCC Gris Nez 50-52N 01-35E 422799256 Inmarsat-C AOR-E
Germany MRCC Bremen 53-04N 08-48E 492621021 Inmarsat-C AOR-E
Latvia MRCC Riga 57-02N 24-05E 427518510 Inmarsat-C AOR-E
Lithuania MRCC Klaipeda 55-43N 21-06E Tel: 327703310 Inmarsat-B AOR-E or IOR
Fax: 327703312
Tlx: 327703314
Russian MRCC Saint 59-54N 30-14E 492509012 Inmarsat-C AOR-E, IOR
Federation Petersburg
Sweden MRCC Göteborg 57-28N 11-56E Tel: 326590010 Inmarsat-B AOR-E, AOR-W,
Fax: 326590011 IOR
Tlx: 326590013
426590010 Inmarsat-C AOR-E, AOR-W,
IOR
United MRCC Falmouth Falmouth 1441532 Inmarsat-A AOR-E
Kingdom 423200159 Inmarsat-C AOR-W
423200158 Inmarsat-C AOR-E
II France MRCC Etel 47-40N 03-12W 422799025 Inmarsat-C AOR-E
III Croatia MRCC Rijeka 45-20N 14-27E 423816510 Inmarsat-C AOR-E
Cyprus RCC Larnaca 34-52N 33-37E Tel: 321099990 Inmarsat-B AOR-E, IOR
Fax: 321099991
Tlx: 321099992
421099999 Inmarsat-C AOR-E, IOR
Greece Piraeus JRCC 37-58N 23-40E 1133207 Inmarsat-A AOR-E, IOR
423767310 Inmarsat-C AOR-E, IOR
Russian MRCC 44-41N 37-47E Tel: 327325510 Inmarsat-B IOR
Federation Novorossiysk Fax: 327325515
Tlx: 327325518
(Caspian Sea) MRCC Astrakhan 46-20N 48-00E 427310985 Inmarsat-C IOR
Ukraine MRCC Odessa 46-29N 30-44E 492550019 Inmarsat-C AOR-E
IV Bermuda RCC Bermuda 32-23N 64-41W 431010110 Inmarsat-C AOR-E
Canada MRSC St. John’s - 431699930 Inmarsat-C AOR-W
- 431699931 Inmarsat-C AOR-E
JRCC Halifax - Tlx: 331699943 Inmarsat-B AOR-W
- 493020115 Inmarsat-C AOR-W
JRCC Trenton - 431699928 Inmarsat-C AOR-W
JRCC Victoria - 431699932 Inmarsat-C AOR-W
- 431699933 Inmarsat-C POR
France MRCC 14-36N 61-04W 422799244 Inmarsat-C AOR-E
(Martinique) Fort-de-France 422799024 Inmarsat-C AOR-W
4 - 109
RCC SES DETAIL

NAV/MET Country Name Position ID Type Ocean Region
Area Accessed
IV United States RCC Norfolk 36-43N 76-12W 430370680 Inmarsat-C AOR-W
430370670 Inmarsat-C AOR-E
V Brazil MRCC Brazil 22-53N 43-10W 471009910 Inmarsat-C AOR-E, AOR-W
VI Argentina MRCC Puerto 38-53S 62-06W 470128910 Inmarsat-C AOR-E, AOR-W
Belgrano
VII France MRCC La Reunion 20-56S 55-17E 422799193 Inmarsat-C IOR
(La Reunion)
VIII France MRCC La Reunion 20-56S 55-17E 422799193 Inmarsat-C IOR
(La Reunion)
IX Egypt Suez Canal Ismailia Radio 1622570 Inmarsat-A AOR-E
Authority
X Australia RCC Australia 35-15S 149-05E 450300458 Inmarsat-C POR
France (New MRCC Noumea 22-17S 166-26E 422799194 Inmarsat-C POR
Caledonia)
XI China Beijing N.I. N.I. N.I. N.I.
Hong Kong MRCC Hong Kong Hong Kong 447735010 Inmarsat-C POR
(Associate
Member of
IMO)
XIII Russian MRCC Vladivostok 43-07N 131-53E 492500379 Inmarsat-C POR
Federation
MRSC 46-59N 142-43E 427311122 Inmarsat-C POR
Yuzhno-Sakhalinsk
(White Sea) MRSC Arkhangelsk 64-32N 40-32E 492509110 Inmarsat-C AOR-E, IOR
XIV French MRCC Papeete 17-32S 149-35W 422799192 Inmarsat-C POR
Polynesia
4 - 110
CHAPTER 5
STATIONS TRANSMITTING MEDICAL ADVICE
500A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

500B. Station List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5-1
CHAPTER 5
500A. General conjunction with English or another language specified by

the coast station called.
This chapter is to assist ships at sea, with no medical
personnel embarked, experiencing a medical emergency Messages are generally addressed RADIOMEDICAL
onboard. The text of any message should be formatted in followed by the name of the coast station to which the
plain language and should describe the medical emergency message is sent. The priority of the message should depend
as follows: on the severity of the ailment. In extreme emergency the
– General description of medical resources. urgency signal (PAN PAN) should precede the address on
– Name of next port of call. the address line (example: PAN PAN RADIOMEDICAL
– List of ports visited where exotic or infectious diseases HALIFAX RADIO).
could have been contracted. Messages are sent using distress and safety frequencies
– Patient data: (See chapter 4.) by radiotelex, radiotelephony, or Inmarsat.
– Sex.
– Age. 500B. Station List
– Clinical antecedents.
– Vital signs (temperature in degrees centigrade). Detailed information concerning stations transmitting
– Symptoms. medical advice is contained in the List of Radiodetermination
– Presumed cause of illness or accident. and Special Service Stations of the International
– Observations. Telecommunication Union. A brief listing of medical advice
If language is a limiting factor, the International Code of stations, alphabetical by country, follows.
Signals (CDPUBNV102) can be used by itself, or in
5-3
(1) (2) (3) (4) (5)

No. Name Address Name of Coast Station Remarks
For all addresses in this table, the letters “XXX” are for use in radiotelegraphy; they are replaced by the words “Pan Pan Pan” in radiotelephony.
5010 Algeria XXX RADIOMEDICAL; station call Algiers (7TA). Message must be in English or French.
sign. Annaba (7TB).
Oran (7TO).
5020 Argentina CONSULTA RADIO-MEDICA; Any coast radio station. Message must be in Spanish. It should
name of coast station. include the following information:
In urgent cases the prefix “XXX” or (a) patient's sex;
“PAN” may be used. (b) age;
(c) medical history;
(d) symptoms;
(e) probable cause of the illness or
circumstances leading to the accident;
(f) any additional information that may aid
diagnosis and treatment such as pulse rate,
temperature (°C), and cause and severity of
the wound.
Message must be signed by the Master.

This service, provided by Servicio de
Asistencia Medica de Emergencia (SAME)
(Emergency Medical Assistance Service),
assumes no liability for information given in
medical consultations.
5030 Australia RCC Australia; RCC Australia (VIC). Vessels at sea can request medical advice
MMSI 005030001. via HF DSC radio or Inmarsat satellite
services. The service has been put into
place for SOLAS vessels but other craft may
use the service in emergencies.
This service is free and is available via

Inmarsat-C fitted vessels using access code
32, HF DSC fitted vessels through RCC
Australia (VIC) using Urgency priority DSC
Call or, for non-SOLAS vessels, by
contacting RCC Australia on (61) 2 6230
6868 who will put the vessel in contact with
the Duty Medical Officer at the Royal Flying
Doctor Service (RFDS) Telemedical Advice
Center (TMAC) at Cairns, Queensland.
5050 Bahrain Health Officer, Bahrain. Bahrain (A9M).
5060 Bangladesh Medical Services, Port Health Chittagong (S3D). Message should include description of
Officer, Chittagong. In urgent cases patient's symptoms and description of ship's
the prefix “XXX” may be used. medical chest. It must be signed by the
Master.
5070 Barbados Health Officer, Barbados. Barbados (8PO).
5080 Belgium RADIOMEDICAL Oostende. In Oostende (OST). Message must be in Dutch, English, French
urgent cases the prefix “XXX” may or German. It should include description of
be used. ship's medical chest and patient's
symptoms, age, sex, vital signs and medical
history. Message must be signed by the
Master.
5090 Benin XXX RADIOMEDICAL Cotonou. Cotonou (TYA). Message must be in French. It should
include description of ship's medical chest
and patient's symptoms, age, sex, vital signs
and medical history. Message must be
signed by the Master.
5100 Bermuda Health Officer, Bermuda. Bermuda Radio (VRT)(ZBM).
5101 Burma Medical Service, Rangoon. Rangoon (XYR).
5110 Cameroon XXX RADIOMEDICAL Douala. Douala (TJC). Message must be in French. This service
assumes no liability.
5120 Canada RADIOMEDICAL; station call sign. Any coast radio station. Message must be signed by the Master.
5130 Chile MEDICO; station call sign. In Antofagasta (CBA).

urgent cases the prefix “XXX” may Magallanes (CBM).
be used. Talcahuano (CBT).
Valparaiso (CBV).
5-4
(1) (2) (3) (4) (5)

5140 China MEDICO; station call sign. In Dalian (XSZ).

urgent cases the prefix “XXX” may Guangzhou (XSQ).
be used. Qingdao (XST).
Shanghai XSG).
Tianjin (XSV).
5141 Comoros RADIOMEDICAL Dzaoudzi. Dzaoudzi (FJN). Message must be in English or French.
5150 Congo XXX RADIOMEDICAL Pointe Noire. Pointe Noire (TNA). Message must be in French. This service
5160 Costa Rica DH MEDICO Limon. Limon (TIM).
5165 Croatia RADIOMEDICAL; name of coast Any coast radio station. Message must be in English or Croatian. It
station. should include:
(a) symptoms noted and those experienced
by patient;
(b) patient's age and sex;
(c) date of the accident or onset of illness;
(d) temperature, pulse, general condition,
and position of the patient;
(e) medical equipment carried by the ship.
Message must be signed by the Master.
Stations provide medical advice to ships of

all nationalities. The radiomedical service is
free of charge.
5170 Cuba DH MEDICO; station call sign. Habana (CLA)(CLT).

Santiago De Cuba (CLM).
5180 Cyprus MEDICO DMO Nicosia. Cyprus (5BA).
5190 Denmark RADIOMEDICAL; station call sign. Blaavand (OXB). Message must be in Danish, English,
Lyngby (OXZ). French, German, Norwegian or Swedish. It
Ronne (OYE). should include ship's name and position and
Skagen (OXP). patient's symptoms and vital signs.
Torshavn (OXJ). Message must be signed by the Master.
5200 Djibouti Service Quarantenaire Djibouti Djibouti (J2A). Message must be in English or French. This
(J2A). In urgent cases the prefix service assumes no liability.
“XXX” may be used.
5210 Dominican Republic RADIOMEDICO Santo Domingo Santo Domingo Piloto (HIA).
Piloto.
5220 Egypt XXX RADIOMEDICAL; station call Alexandria (SUH). Message must be signed by the Master.
sign. Kosseir (SUK). This service assumes no liability.
5245 Fiji Islands RADIOMEDICAL Suva. Suva (3DP).
5250 Finland RADIOMEDICAL; station call sign. Any coast radio station except Message must be in English, Finnish or
In urgent cases the prefix “XXX” Kemi, Swedish. It should include patient's
may be used. Turku or Port. symptoms and cause of illness. Message
must be signed by the Master.
Consultations with doctors of central
hospitals of Helsinki and Turku University
are free of charge. Other doctors consulted
set their own fees.
5-5
(1) (2) (3) (4) (5)

5260 France XXX RADIOMEDICAL; name of Any coast radio station or Message must be in French, English, or
CROSS/Sous-CROSS station. CROSS/Sous-CROSS station. International Code (CDPUBNV102).
CCMM telex: 530333F The French Center for Maritime Medicine

telephone: 33 5 61 49 33 33 (CCMM) is part of the Urgent Medical Aid
Service (SAMU) in Toulouse and is available
continuously to give advice to ships at sea.
After analyzing the patient's situation,
CCMM advises the ship's Master of the
recommended treatment:
Type 1 - treatment onboard without altering

voyage.
Type 2 - treatment onboard with change of
voyage plan.
Type 3 - urgent evacuation without doctor
(EVA-SAN).
Type 4 - urgent evacuation with doctor
(EVA-MED).
Type 5 - onboard transfer of medical team
followed by evacuation.
For treatment types 3, 4, and 5

(interventions by CCMM), the Master is
advised to send his request by telex or
radiotelephone to the nearest CROSS
station; Etel and La Garde CROSS stations
specialize in providing medical advice.
CCMM can be contacted by:

(1) Radiotelephone via any CROSS or
Sous-CROSS station or coast radio station.
(2) Radiotelex (MED+) via any coast radio
station.
(3) Inmarsat telephone call using code 38.
5290 Gambia Health Officer, Banjul. Banjul (C5G).
5300 Germany Funkarzt; station call sign. In Any coast radio station. Message must be in English or German.
urgent cases the prefix “XXX” may
be used.
5320 Ghana Port Health Officer, Takoradi. Takoradi (9GA).
5330 Greece RADIOMEDICAL; station call sign. Any coast radio station. Message must be in English, French or
In urgent cases the prefix “XXX” Greek. This service assumes no liability.
may be used.
5340 Greenland RADIOMEDICAL Julianehab. Qaqortoq (OXF). Message must be in Danish, English,
French, German, Norwegian or Swedish.
5350 Guadeloupe XXX RADIOMEDICAL Pointe-a-Pitre (FFQ). Message must be in French.

Pointe-a-Pitre.
5360 Guinea XXX RADIOMEDICAL Conakry. Conakry (3XC). Message must be in French. It should
include patient's symptoms, age, sex, vital
signs and medical history. This service
assumes no liability. Conakry guards 2182
kHz 0700-1900 and 3 minutes at the
beginning of every hour 2000-2200.
5370 Guyana Health Officer, Georgetown. Demerara (8RB).
5380 Hong Kong (China) Porthealth Hong Kong. Hong Kong (VRX).
5390 India Medical service; station call sign. Any coast radio station. Message should include patient's symptoms
In urgent cases the prefix “XXX” and description of ship's medical chest. It
may be used. must be signed by the Master.
5400 Indonesia RADIOMEDICAL Jayapura. In Jayapura (PNK). Message must be in Dutch or English. It
urgent cases the prefix “XXX” may should include description of ship's medical
be used. chest and patient's sex, age, medical history,
symptoms and vital signs. Message must be
5410 Iraq Port Medical Officer, Ma'aqal. In Basrah Control (YIR).

urgent cases the prefix “XXX” may
be used.
5420 Ireland (No specific format). Any coast radio station. If a doctor from shore is wanted, the request
should be addressed as a radiotelegram to
the medical officer of the nearest convenient
port.
5430 Israel MEDICO Haifa. In urgent cases the Haifa (4XO). Message must be signed by the Master.
prefix “XXX” may be used. This service assumes no liability.
5-6
(1) (2) (3) (4) (5)

5440 Italy MEDRAD CIRM Roma. Any coast radio station. The International Radio Medical Center
The following coast radio stations (CIRM) provides 24-hour free radio medical
will relay messages to CIRM: assistance to patients onboard vessels of
Italian coast radio stations (asking any nationality anywhere in the world. CIRM
for CIRM) (address: MEDRAD can also decide and coordinate, wherever
CIRM Roma). possible, the Medevac of a patient from a
USCG stations (Atlantic and Gulf vessel by naval craft or helicopter,
coasts) (address: DH MEDICO cooperating mainly with National MRCCs
CIRM Roma). and if necessary with other rescue
USCG stations (Pacific coast) organizations, such as the USCG.
(address: DH MEDICO CIRM
Roma via PREWI). Message must be in English, French or
Italian. When requesting radio medical
CIRM can be contacted 24 hours assistance, the vessel should communicate
by: the following information regarding:
telephone: (39) 06 592 3331/3332
facsimile: (39) 06 592 3333 the vessel:
telex*: (43) 612068 CIRM I (both (a) Vessel's name/call sign.
satellite or radio telex) (b) Position, port of departure and
E-mail: telesoccorso@cirm.it destination, ETA, route and speed.
Website: http://www.cirm.it (c) Medicine chest available.
Maritec system
the patient:
(d) Name, age and nationality.
(e) Temperature, blood pressure, pulse and
respiratory rates.
(f) Patient's symptoms, location and type of
pains, and any relevant information
concerning the illness.
(g) Other medical problems, with special
reference to drug or other allergies, chronic
illness and their treatment.
(h) In case of accident, in addition to the
symptoms, where and how the accident
occurred.
(i) Treatment already administered to the
patient.
*NOTE: Requests via telex should be addressed MEDRAD or DH MEDICO to obtain priority of transmission.
5450 Ivory Coast XXX RADIOMEDICAL Abidjan. Abidjan (TUA). Message must be in French. It should
include patient's age, sex, symptoms,
medical history and vital signs. Message
must be signed by the Master. This service
assumes no liability. Abidjan guards 2182
kHz, but only distress and safety traffic are
handled 2000-0800.
5460 Jamaica Health Office, Kingston. Kingston (6YI).
5470 Japan MDC; station call sign and hospital Any coast radio station. Message must be in English, French,
name if applicable. In urgent cases The following hospitals also German or Japanese. It must be signed by
the prefix “XXX” may be used. respond the Master.
under the call signs listed:
NKEB - Kobe
Moji
Nagasaki
Nagoya
Osaka
Otaru
Shiogama
Tokyo
Yokohama
SHKB - Osaka
Tokyo
Yokohama
Japanese vessels with doctors
aboard will also respond to
requests
for medical advice
(address: ship's Master).
5480 Kenya Medical Port Health Officer, Mombasa (5ZF). Message must be signed by the Master.
Mombasa.
5485 Latvia (No specific format). Riga (UKB).
5500 Madagascar XXX RADIOMEDICAL; station call Antseranana (5RL). Message must be in English, French or
sign. Mahajango (5RO). Malagasy. This service assumes no liability.
Taomasina (5RS).
Toliara (5RT).
5510 Malaysia RADIOMEDICAL; station call sign. Kelang (9MP). Message should include patient's symptoms
In urgent cases the prefix “XXX” Kota Kinbalu (9WH). and description of ship's medical chest.
may be used. Kuantan (9MK).
Kuching (9WW20).
Miri (9WW21).
Pinang (9MG).
Sandakan (9WH21).
5520 Malta Medical Officer, Malta. Malta (9HD).
5-7
(1) (2) (3) (4) (5)

5540 Martinique XXX RADIOMEDICAL Fort de Fort de France (FFP). Message must be in French. This service
France Radio. assumes no liability.
5541 Mauritius Superintendent, Victoria Hospital, Mauritius (3BA). Message must be in English or French.
Quatre-Bornes, Mauritius.
5542 Monaco (No specific format). Monaco (3AC). Message must be in English, French or
Italian.
5550 Morocco XXX RADIOMEDICAL; station call Agadir (CND). Message must be in French. This service
sign. Casablanca (CNP). assumes no liability.
Safi (CND3).
Tangier (CNW).
5560 Namibia Porthealth, Walvis Bay. Walvis Bay (ZSV). Message must be in International Code
(CDPUBNV102) supplemented, if
necessary, with Afrikaans or English. It
should include patient's symptoms and brief
description of ship's medical chest. This
service assumes no liability.
5565 Nauru RADIOMEDICAL Nauru. Nauru (C2N).
5570 Netherlands Radio Medical Advice (RMA). Netherlands Coastguard Radio Message must be in Dutch or English.
(PBK).
Radiotelephone (VHF)-Sea Area A1:
(a) Call Netherlands Coastguard Radio
(PBK) on VHF DSC Ch. 70 MMSI
002442000 or Ch. 16.
(b) State vessel's name, callsign and
position, and ask for Medical Advice.
(c) The vessel will be assigned a VHF
working channel (Ch. 23 or 83) and
connected to the duty RMA doctor.
(d) Use the Radio Medical Advice
questionnaire to give the doctor clear
information.
Radiotelephone (MF)-Sea Area A2:

(a) Call Netherlands Coastguard Radio
(PBK) on MF DSC 2187.5 kHz MMSI
002442000 requesting a transfer to 2182
kHz.
(b) After establishing contact on 2182 kHz
state vessel's name, callsign and position,
and ask for Medical Advice.
(c) The vessel will be assigned a working
frequency and connected to the duty RMA
doctor.
(d) Use the Radio Medical Advice
information.
Inmarsat-A/-B/-M Telephone (via

Burum-Station 12):
(a) Contact Station 12 by entering code 12.
(b) For priority use code 32-Medical Advice
or code 38-Medical Evacuation.
(c) State vessel's name, Inmarsat number
and position.
(d) Vessel will be connected to the duty RMA
doctor.
(e) Use the Radio Medical Advice
information.
Inmarsat-A/-B/-C Telex* (via Burum-Station

12):
(a) Contact Station 12 by entering code 12.
(b) For priority use code 32-Medical Advice
or code 38-Medical Evaluation.
*NOTE: For Inmarsat -A/-B Telex, the vessel will be automatically relayed to the RMA computer and will receive the host (MEDIC SERVICE NL). Vessel's host will be
called in. Send the message and end with: NNNN. Disconnect but do not switch off the Inmarsat terminal as the RMA computer will automatically send a reply from the
doctor.
For Inmarsat-C Telex, the vessel will be automatically relayed to the store and forward system of Station 12. Send the message and end with: NNNN. Disconnect but
do not switch off the Inmarsat terminal as the RMA computer will automatically send a reply from the doctor.
5580 Netherland Antilles RADIOMEDICUS Curacao. Curacao (PJC). Message should include description of
ship's medical chest, last/next ports of call
and patient's age, sex, symptoms, vital signs
and medical history. It must be signed by
the Master.
5590 New Caledonia RADIOMEDICAL Noumea. Noumea (FJP). Message must be in French. It should
include patient's symptoms and description
of ship's medical chest. Message must be
5600 New Zealand RADIOMEDICAL; station call sign. Taupo Maritime Radio (ZLM). Message should include patient's symptoms
In urgent cases the prefix “XXX” and description of ship's medical chest. It
may be used. must be signed by the Master.
5-8
(1) (2) (3) (4) (5)

5610 Nigeria Health Officer, Lagos. Lagos (5OW).
5620 Norway (No specific format). Any coast radio station. Message must be in Danish, English,
German, Norwegian or Swedish.
5630 Oman Health Officer, Muscat. Muscat (A4M).
5640 Pakistan Medical Services, Port Health Karachi (ASK). Message should include patient's symptoms
Officer, Karachi. In urgent cases and description of ship's medical chest. It
the prefix “XXX” may be used. must be signed by the Master.
5650 Panama DH MEDICO. Canal (HPN60) Canal guards 500 kHz.
5660 Papua New Guinea RADIOMEDICAL; station call sign. Port Moresby (P2M).
Rabaul (P2R).
5665 Peru Centro Medico Naval Callao. Callao (OBC3). Message must be in Spanish. It should
include patient's sex, age, symptoms,
medical history and vital signs, description
of ship's medical chest, position and next
port of call.
5670 Philippines MEDICO Manila. Manila (DZR).
5680 Poland RADIOMEDICAL; station call sign. Gdynia (SPC)(SPH). Message must be in English or Polish.
In urgent cases the prefix “XXX” Szczecin (SPE)(SPO).
may be used. Witowo (SPN)(SPS).
5690 Portugal XXX RADIOMEDICAL; station call Lisboa (CUL). Message must be in English, French or
sign. Madeira (CUB). Portuguese. It should inlude cause and
Sao Miguel (CUG). symptoms of illness. Message must be
signed by the Master. This service assumes
no liability.
5705 Russia (No specific format). Arkhangel'sk (UGE). Message must be in English or Russian.
Murmansk (UMN).
St. Petersburg (UDB).
Vladivostok (UIK).
5710 Reunion Island XXX RADIOMEDICAL St. Denis. St. Denis (FFD). Message must be in French. This service
5720 St. Helena Medical Officer, St. Helena. St. Helena (ZHH).
5725 St. Pierre and Miquelon RADIOMEDICAL St. Pierre. St. Pierre (TXU). Message must be in French.
5730 Saudi Arabia (No specific format). Dammam (HZG). Stations guard 500 kHz.
Jiddah (HZH).
Ra's Tannurah (HZY).
5740 Senegal XXX RADIOMEDICAL Dakar. Dakar (6VA). Message must be in French. It should
include patient's age, sex, medical history,
vital signs and symptoms. Dakar guards
2182 kHz, but only distress and safety traffic
are handled 2000-0800.
5740.5 Serbia and Montenegro RADIOMEDICAL Bar. Bar (YUW). Message must be in English or Serbo-Croat.
It should include patient's age, sex, medical
history, symptoms and vital signs, date of
the accident or of the onset of the illness,
and description of ship's medical chest.
5741 Seychelles Health Officer, Seychelles. Seychelles (S7Q).
5750 Sierra Leone Health Officer, Freetown. Freetown (9LL).
5755 Singapore RADIOMEDICAL Singapore. Singapore (9VG).
5760 Slovenia RADIOMEDICAL; station call sign. Any coast radio station. Message should include patient's age, sex,
medical history, symptoms and vital signs
and description of ships medical chest.
5-9
(1) (2) (3) (4) (5)

5770 South Africa Porthealth; station call sign. Capetown (ZSC). Message must be in International Code
Durban (ZSD). (CDPUBNV102) supplemented, if
East London (ZSA). necessary, with Afrikaans or English. It
Port Elizabeth (ZSQ). should include patient's symptoms and
Richards Bay (ZSU). description of ship's medical chest. This
service assumes no liability.
5780 Yemen Aden Health Officer, Aden. Aden (7OA).
5790 Spain MEDRAD; station call sign. In Any coast radio station. Message must be in Spanish or
urgent cases the prefix “XXX” may International Code (CDPUBNV102).
be used.
5800 Sri Lanka Medical Service, Colombo. In Colombo (4PB). Message should include patient's symptoms
urgent cases the prefix “XXX” may and description of ship's medical chest. It
be used. must be signed by the Master.
5810 Suriname Medical Advice, Director of Health, Paramaribo (PZN). Message should include description of
Paramaribo. ship's medical chest and patient's sex, age,
symptoms and medical history. It must be
5820 Sweden (No specific format). MRCC Goteborg. MRCC Goteborg can be contacted by:
telephone: (46) 31 699050
fax: (46) 31 648010
telex: (54) 20180 (MRCCGBG S)
email:
radiomedical@amrcc.sjofartsverket.se
If possible, try to contact MRCC Goteborg

by phone first when sending e-mail.
5820.5 Svalbard (No specific format). Svalbard (LGS). Message must be in Danish, English,
Ny-Alesund (LJN). German, Norwegian or Swedish (French
over radiotelegraph only).
5821 Switzerland RADIOMEDICAL Bern. Bern (HEB)(HEC). Message may be in English, but preferably
in French or German.
5822 Tahiti RADIOMEDICAL Mahina. Mahina (FJA). Message must be in English or French.
5823 Tonga RADIOMEDICAL Nukualofa. Nukualofa (A3A). In urgent cases Message should be in English. It should
the prefix “PAN PAN” may be used. include patient's symptoms and description
of ship's medical chest.
5824 Togo RADIOMEDICAL Lome. Lome (5VA). Message must be in French.
5840 Tunisia XXX RADIOMEDICAL; station call Bizerte (3VB). Message must be in French.
sign. Mahdia (3VM).
Sfax (3VS).
Tunis (3VX)(3VT).
5845 Ukraine (No specific format). Odessa (UDE).
5850 United Kingdom (No specific format). Any coast radio station. Radiotelephone (VHF): Vessels should call
on DSC Ch. 70 or on VHF Ch. 16 and will be
directed to a working channel. After contact
is established on the working channel, the
vessel will be connected to a casualty doctor
by simplex radiotelephone.
Radiotelephone (MF): After an initial call on

DSC 2187.5 kHz using the Urgency priority
and contact is established on 2182 kHz, the
vessel will be assigned a working frequency.
After contact is established on the working
frequency, the vessel will be connected to a
casualty doctor by simplex radiotelephone.
Alternatively, vessels may call direct on 2182
kHz.
Inmarsat-A/-B/-M/Mini-M Telephone (via

Goonhilly): Vessels should use code 32 for
medical advice and will be automatically
connected to a doctor. Vessels requiring
urgent medical assistance should use code
38 and will be automatically connected to
the HM Coast Guard.
5 - 10
(1) (2) (3) (4) (5)

5860 United States (Atlantic and Gulf) DH MEDICO; station call sign; Massachusetts: Telephone calls from ships to doctors or
group count (number of words in Boston (NMF), USCG. hospitals are handled as regular phone calls
message). in accordance with legally applicable tariffs.
Virginia: Ships requesting medical advice with no
CAMSLANT Chesapeake specific telephone number will be connected
(Portsmouth) (NMN), USCG. by the USCG. No charge is made for the call
when the ship states it is an emergency
Florida: involving the safety of life or property at sea.
Miami (NMA), USCG. Message must be signed by the Master.
Louisiana: Messages transmitted to a USCG station

New Orleans (NMG), USCG. are routed to the nearest medical facility.
This service (inquiry and reply) is free of
charge.
Numerous USCG stations continuously

guard 2182 kHz (USB) and 156.8 MHz
(VHF-FM) and will facilitate the provision of
medical advice through their associated
Rescue Coordination Center (RCC).
The use of the signal “CQ” from the

International Code (CDPUBNV102) for
medical messages is discouraged.
5861 United States (Great Lakes) DH MEDICO; station call sign; Telephone calls from ships to doctors or
group count (number of words in hospitals are handled as regular phone calls
ships requesting medical advice with no
specific telephone number will be connected
by the USCG. No charge is made for the call
involving the safety of life or property at sea.
Messages must be signed by the Master.
Messages transmitted to a USCG station

are routed to the nearest medical facility.
charge.


5862 United States (Pacific) DH MEDICO; station call sign; Alaska: Telephone calls from ships to doctors or
group count (number of words in Kodiak (NOJ), USCG. hospitals are handled as regular phone calls
California: Ships requesting medical advice with no
CAMSPAC Point Reyes (San specific telephone number will be connected
Francisco) (NMC), USCG. by the USCG. No charge is made for the call
Hawaii: involving the safety of life or property at sea.
Honolulu (NMO), USCG. Message must be signed by the Master.
Mariana Islands: Messages transmitted to a USCG station

Guam (NRV), USCG. are routed to the nearest medical facility.
charge.


5866 Uruguay Montevideo Trouville (CWC39). Any coast radio station. Message must be in International Code
(CDPUBNV102).
5868 Vietnam RADIOMEDICAL; station call sign. Ho Chi Minh Ville (XVS).
Haiphong (XVG).
5 - 11
CHAPTER 6
LONG RANGE NAVIGATIONAL AIDS
PART I LORAN-C
600A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

600B. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
600C. Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
600D. Station List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
PART II SATELLITE NAVIGATION
610A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

610B. GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
610C. DGPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
610D. GLONASS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Notes: Greater detail on the theory, principles, and operation of long range navigational aids may be found in The
American Practical Navigator (Bowditch)(NVPUB9).
5.0The U.S. Naval Observatory Website provides LORAN-C and GPS user information and data at:
5.0http://tycho.usno.navy.mil/gps.html
The U.S. Coast Guard Navigation Center Website provides Loran-C, GPS, DGPS and general
5.0
radionavigation user information and status at:

http://www.navcen.uscg.gov/
5.0
http://www.navcenter.org (Mirror site)

5.0
5.0GPS status is also broadcast from WWV and WWVH (See sec. 200H.).
6-1
CHAPTER 6
PART I LORAN-C
600A. General overprinted with LORAN-C time difference lines.

(CAUTIONARY NOTE: The conversion computation on
LORAN is a long range system which operates on the some models is based upon an all sea water propagation
principle that the difference in time of arrival of signals path. This leads to errors if the LORAN-C signals from the
from two precisely synchronized transmitting stations various stations involve appreciable overland paths. It is
describes a hyperbolic line of position (LOP). This time recommended that operators using coordinate converters
difference is measured with a LORAN receiver, and is check the manufacturer’s operating manual to determine if
either converted into geographic LOPs for use with and how corrections are to be applied to compensate for
nautical charts overprinted with LORAN lines or directly overland paths.)
into latitude and longitude readouts. Since at least two Each LORAN-C rate is continuously monitored to
LOPs must be determined to establish a position, the user determine that proper synchronization is being maintained.
must be within the range of two pairs of transmitting When the synchronization error exceeds the advertised
stations or, as is normally the case, a LORAN chain where tolerance, the user is advised by the blinking of pulses of
a centrally located station serves as a timing reference for the affected secondary and is warned not to use the signal
the other stations in the chain. This station is called the for navigational purposes. The blink signal will cause most
master station (designated M) and the secondaries are receivers to indicate by an alarm that the navigational data
usually designated by the letters V, W, X, Y, or Z. In the displayed is in error. Mariners should check equipment
United States, LORAN-C is operated by the U.S. Coast manuals to determine if their receivers are equipped with a
Guard. Developed in the late 1950’s, LORAN-C operates Blink Alarm and, if not, should exercise caution when near
on a frequency of 100 kHz. Each LORAN-C chain known hazards or when in restricted waters.
operates on a different pulse group repetition interval LORAN-C position determinations on or near the
(GRI). This allows the operator to make at least two time baseline extensions are subject to significant errors and
difference (TD) measurements without changing channels should be avoided wherever possible. A great circle line
on the receiver. The low frequency of LORAN-C permits between two LORAN stations is a baseline; the baseline
usable groundwave signals over several hundred miles. extension is the extension of that line beyond either station.
LORAN-C coverage presently exists along the western
600B. Operation coast of North America from the Bering Sea southward
along the Gulf of Alaska, western Canada, and the U.S.
The LORAN-C GRI rate structure is such that a GRI west coast to the Mexican border. Along the eastern coast
between 40,000 and 99,990 microseconds is chosen for of North America, LORAN-C coverage exists from
each chain. The chain designations are four digit numbers Newfoundland to the southern tip of Florida. Gulf Coast
which indicate the GRI in tens of microseconds. For coverage exists from the southern tip of Florida to the
example, the northeast U.S. LORAN-C chain is designated Texas-Mexico border. Coverage of Lakes Superior,
9960 and has a GRI of 99,600 microseconds. Michigan, and Huron is provided by the Great Lakes chain,
The accuracy of a LORAN-C fix is determined by the rate 8970. Coverage of Lakes Huron, Erie, and Ontario is
accuracy of the individual lines of position used to provided by the Northeast U.S. chain, rate 9960. Coverage
establish the fix, as well as by their crossing angle of over the central region of the U.S. is provided by the North
intersection. The accuracy of the individual lines of and South Central chains, rates 8290 and 9610,
position depends on the following factors: respectively. For foreign LORAN-C coverage (including
– Synchronization of the transmitting stations. that described above) refer to the LORAN-C Plotting
– Operator skill. Charts diagram in the latest edition of NGA Catalog of
– Type of receiver and its condition. Maps, Charts, and Related Products Part 2-Volume I
– Skill in plotting the line of position. Hydrographic Products (CATP2V01U).
– Position of user relative to the transmitting stations. Detailed LORAN-C information is contained in the U.S.
– Accuracy of charts. Coast Guard’s LORAN-C User Handbook (COMDTPUB
– Accuracy of corrections to compensate for the overland P16562.6).
path. NOTE: While the United States continues to evaluate the
Some LORAN-C receivers employ a coordinate long-term need for continuation of the Loran-C
converter function, which is designed to internally radionavigation system, the Government will operate the
compute the latitude and longitude and directly display Loran-C system in the short term. The U.S. Government
these values. This eliminates the need for charts will give users reasonable notice if it concludes that
6-3
Loran-C is not needed or is not cost effective, so that users (Korea, North China Sea, East China Sea, South China
will have the opportunity to transition to alternative Sea, and Russian) became operational.
navigation aids. With this continued sustainment of the
Loran-C service, users will be able to realize additional 600C. Receivers
benefits. Improvement of GPS time synchronization of the
Loran-C chains and the use of digital receivers may There are many types of LORAN-C receivers available.
support improved accuracy and coverage of the service. Each type employs various techniques for acquiring and
Loran-C will continue to provide a supplemental means of tracking LORAN-C signals, and for indicating the time
navigation. difference or position information to the user. A
For further information and/or operational questions LORAN-C receiver which will be useful within the limits
regarding LORAN-C in the United States, contact: of the Coast Guard’s coverage for the U.S., and which is
capable of measuring positions with the accuracy which is
COMMANDING OFFICER advertised for LORAN-C, has the following
U.S. COAST GUARD NAVIGATION CENTER characteristics:
7323 TELEGRAPH ROAD – It acquires the LORAN-C signals automatically, without
ALEXANDRIA VA 22315-3998 the use of an oscilloscope.
– It identifies master and secondary groundwave pulses
Telephone: (1) 703-313-5900. automatically.
Fax: (1) 703-313-5920. – It tracks the signals automatically once they have been
acquired.
The Navigation Information Service (NIS) is internet – It displays two time difference readings, to a precision of
accessible through the U.S. Coast Guard Navigation at least one tenth of a microsecond, and/or latitude and
Center Website at: longitude.
http://www.navcen.uscg.gov/ – It has notch filters to minimize the effects of radio
http://www.navcenter.org (Mirror site) frequency interference in the area of its operation.
– It automatically detects blink and alerts the operator.
FOREIGN LORAN-C COVERAGE: In 1992, the U.S. Proper LORAN-C receiver installation is necessary to
Coast Guard, which operated LORAN-C overseas for the ensure optimum results. Some of the essential elements of
Department of Defense, initiated plans to accomplish good LORAN-C receiver installations are:
transfer or closure of U.S. Coast Guard LORAN-C stations – Use of the correct antenna and antenna coupler. Mount
located on foreign soil. As a result of these efforts, new the antenna as high as possible and away from all metal
LORAN-C systems have developed in areas of the world objects, stays, and other antennas. Do not connect any
previously covered by the U.S. chains. other equipment to a LORAN-C antenna.
The countries of Norway, Denmark, Germany, Ireland, – Connect both the antenna coupler and the receiver to a
the Netherlands and France have established a common good ground. LORAN-C, operating at low frequency,
LORAN-C system known as the Northwest European requires proper grounding.
Loran-C System (NELS). The developing system will be – Electrical and electronic interference, or noise, can come
comprised of nine stations forming four chains. Since from many sources, both aboard the vessel as well as
1995, two chains, Bo and Ejde, have been in experimental from the surrounding environment. Onboard noise
(continuous) operation. The Sylt chain became operational comes from anything that generates or uses electricity; it
in late 1995, but users are warned of its unstable condition. is a more severe problem at 100 kHz than at higher
The Lessay chain became operational in September 1997. frequencies, and it must be suppressed in order to have
For further information regarding NELS, contact: good results from LORAN-C. Alternators, generators,
ignition systems, electrical motors, fluorescent lights,
NELS COORDINATING AGENCY OFFICE radars, and television sets are examples of interfering
LANGKAIA 1 sources. Interference suppression may include
N-0150 OSLO NORWAY installation of filters, shields, grounds, and capacitors.
Interference suppression should be accomplished with
Telephone: 47 2309 2476. the vessel engine running.
Fax: 47 2309 2391. – Protection of the LORAN-C receiver from excessive
Internet: http://www.nels.org heat, dampness, salt spray, and vibration must be
ensured. Do not mount the receiver in direct sunlight or
The countries of Japan, the People’s Republic of China, within one meter of your magnetic compass. Provide
the Republic of Korea and the Russian Federation have adequate ventilation.
established an organization known as the Far East
Radionavigation Service (FERNS). Japan took over 600D. Station List
operation of the former U.S. Coast Guard stations in its
territory and they are currently operated by the Japanese LORAN-C stations, grouped geographically by chains,
Maritime Safety Agency (JMSA). In 1996, five chains are contained in the following list.
6-4
(1) (2) (3) (4) (5) (6) (7)

No. Name Type Component Position Freq. Remarks
NORTH PACIFIC CHAIN
6100 St. Paul, AK 9990 (SS1). LORAN-C Master 57 09 12N 170 15 06W
Attu Is., AK 9990-X. Secondary 52 49 44N 173 10 50E
Port Clarence, AK 9990-Y. Secondary 65 14 40N 166 53 12W
Kodiak, AK 9990-Z. Secondary 57 26 20N 152 22 11W
RUSSIAN (CHAYKA)-AMERICAN CHAIN
6105 Petropavlovsk, Russia 5980. LORAN-C Master 53 07 48N 157 41 43E
Attu Is., AK 5980-X. Secondary 52 49 44N 173 10 50E
Alexandrovsk, Russia Secondary 51 04 43N 142 42 05E

5980-Y.
RUSSIAN CHAIN
6110 Alexandrovsk, Russia 7950. LORAN-C Master 51 04 43N 142 42 05E
Petropavlovsk, Russia Secondary 53 07 48N 157 41 43E

7950-W.
Ussuriysk, Russia 7950-X. Secondary 44 32 00N 131 38 23E
Tokachibuto, Hokkaido, Secondary 42 44 37N 143 43 10E

Japan 7950-Y.
Okhotsk, Russia 7950-Z. Secondary 59 25 02N 143 05 23E
NORTHWEST PACIFIC CHAIN
6120 Nii Jima, Japan 8930 (SS3). LORAN-C Master 34 24 12N 139 16 19E
Gesashi, Okinawa, Japan Secondary 26 36 25N 128 08 57E

8930-W.
Minami-tori Shima (Marcus Secondary 24 17 08N 153 58 54E

Island), Japan 8930-X.
Tokachibuto, Hokkaido, Secondary 42 44 37N 143 43 10E

Japan 8930-Y.
Pohang, South Korea 8930-Z. Secondary 36 11 05N 129 20 27E
6-5
(1) (2) (3) (4) (5) (6) (7)

KOREA CHAIN
6122 Pohang, South Korea 9930. LORAN-C Master 36 11 05N 129 20 27E
Kwangju, South Korea Secondary 35 02 24N 126 32 27E

9930-W.
Gesashi, Okinawa, Japan Secondary 26 36 25N 128 08 57E

9930-X.
Nii Jima, Japan 9930-Y. Secondary 34 24 12N 139 16 19E
Ussuriysk, Russia 9930-Z. Secondary 44 32 00N 131 38 23E
NORTH CHINA SEA CHAIN
6124 Rongcheng, China 7430. LORAN-C Master 37 03 52N 122 19 26E
Xuancheng, China 7430-X. Secondary 31 04 08N 118 53 10E
Helong, China 7430-Y. Secondary 42 43 12N 129 06 27E
EAST CHINA SEA CHAIN
6126 Xuancheng, China 8390. LORAN-C Master 31 04 08N 118 53 10E
Raoping, China 8390-X. Secondary 23 43 26N 116 53 45E
Rongcheng, China 8390-Y. Secondary 37 03 52N 122 19 26E
SOUTH CHINA SEA CHAIN
6128 Hexian, China 6780. LORAN-C Master 23 58 04N 111 43 10E
Raoping, China 6780-X. Secondary 23 43 26N 116 53 45E
Chongzuo, China 6780-Y. Secondary 22 32 35N 107 13 22E
GULF OF ALASKA CHAIN
6130 Tok, AK 7960 (SL4). LORAN-C Master 63 19 43N 142 48 31W
Kodiak, AK 7960-X. Secondary 57 26 20N 152 22 11W
Shoal Cove, AK 7960-Y. Secondary 55 26 21N 131 15 19W
Port Clarence, AK 7960-Z. Secondary 65 14 40N 166 53 12W
6-6
(1) (2) (3) (4) (5) (6) (7)

WEST COAST CANADA CHAIN
6140 Williams Lake, B.C., Canada LORAN-C Master 51 57 59N 122 22 02W
5990 (SH1).
Shoal Cove, AK 5990-X. Secondary 55 26 21N 131 15 19W
George, WA 5990-Y. Secondary 47 03 48N 119 44 39W
Port Hardy, B.C., Canada Secondary 50 36 30N 127 21 28W

5990-Z.
WEST COAST U.S. CHAIN
6150 Fallon, NV 9940 (SS6). LORAN-C Master 39 33 07N 118 49 56W
George, WA 9940-W. Secondary 47 03 48N 119 44 39W
Middletown, CA 9940-X. Secondary 38 46 57N 122 29 44W
Searchlight, NV 9940-Y. Secondary 35 19 18N 114 48 17W
EAST COAST CANADA CHAIN
6160 Caribou, ME 5930 (SH7). LORAN-C Master 46 48 27N 67 55 37W
Nantucket, MA 5930-X. Secondary 41 15 12N 69 58 39W
Cape Race, Nfld., Canada Secondary 46 46 32N 53 10 28W

5930-Y.
Fox Harbor, Nfld., Canada Secondary 52 22 35N 55 42 28W

5930-Z.
NEWFOUNDLAND EAST COAST CHAIN
6165 Comfort Cove, Nfld., Canada LORAN-C Master 49 19 54N 54 51 43W

7270.
Cape Race, Nfld., Canada Secondary 46 46 32N 53 10 28W

7270-W.
Fox Harbor, Nfld., Canada Secondary 52 22 35N 55 42 28W

7270-X.
GREAT LAKES CHAIN
6170 Dana, IN 8970. LORAN-C Master 39 51 08N 87 29 12W
Malone, FL 8970-W. Secondary 30 59 39N 85 10 09W
Seneca, NY 8970-X. Secondary 42 42 51N 76 49 33W
Baudette, MN 8970-Y. Secondary 48 36 50N 94 33 18W
Boise City, OK 8970-Z. Secondary 36 30 21N 102 53 59W
6-7
(1) (2) (3) (4) (5) (6) (7)

NORTHEAST U.S. CHAIN
6180 Seneca, NY 9960 (SS4). LORAN-C Master 42 42 51N 76 49 33W
Caribou, ME 9960-W. Secondary 46 48 27N 67 55 37W
Nantucket, MA 9960-X. Secondary 41 15 12N 69 58 39W
Carolina Beach, NC 9960-Y. Secondary 34 03 46N 77 54 46W
Dana, IN 9960-Z. Secondary 39 51 08N 87 29 12W
SOUTHEAST U.S. CHAIN
6190 Malone, FL 7980 (SL2). LORAN-C Master 30 59 39N 85 10 09W
Grangeville, LA 7980-W. Secondary 30 43 33N 90 49 43W
Raymondville, TX 7980-X. Secondary 26 31 55N 97 50 00W
Jupiter, FL 7980-Y. Secondary 27 01 59N 80 06 53W
Carolina Beach, NC 7980-Z. Secondary 34 03 46N 77 54 46W
EJDE CHAIN
6205 Ejde, Faroe Is., Denmark LORAN-C Master 62 17 59N 7 04 26W

9007.
Jan Mayen Is., Norway Secondary 70 54 51N 8 43 56W

9007-W.
Bo, Norway 9007-X. Secondary 68 38 06N 14 27 47E
Vaerlandet, Norway 9007-Y. Secondary 61 17 49N 4 41 46E
BO CHAIN
6215 Bo, Norway 7001. LORAN-C Master 68 38 06N 14 27 47E
Jan Mayen Is., Norway Secondary 70 54 51N 8 43 56W

7001-X.
Berlevag, Norway 7001-Y. Secondary 70 50 43N 29 12 15E
SYLT CHAIN
6220 Sylt, Germany 7499. LORAN-C Master 54 48 29N 8 17 36E
Lessay, France 7499-X. Secondary 49 08 55N 1 30 17W
Vaerlandet, Norway 7499-Y. Secondary 61 17 49N 4 41 46E
6-8
(1) (2) (3) (4) (5) (6) (7)

LESSAY CHAIN
6225 Lessay, France 6731. LORAN-C Master 49 08 55N 1 30 17W
Soustons, France 6731-X. Secondary 43 44 23N 1 22 49W
Sylt, Germany 6731-Z. Secondary 54 48 29N 8 17 36E
NORTH SAUDI ARABIAN CHAIN
6240 Afif, Saudi Arabia 8830. LORAN-C Master 23 48 37N 42 51 18E
Salwa, Saudi Arabia 8830-W. Secondary 24 50 02N 50 34 13E
Al Khamasin, Saudi Arabia Secondary 20 28 02N 44 34 53E

8830-X.
Ash Shaykh Humayd, Saudi Secondary 28 09 16N 34 45 41E

Arabia 8830-Y.
Al Muwassam, Saudi Arabia Secondary 16 25 56N 42 48 05E

8830-Z.
INDIA (BOMBAY) CHAIN
6260 Dhrangadhara 6042. LORAN-C Master 23 00 14N 71 31 39E
Veraval 6042-W. Secondary 20 57 07N 70 20 13E
Billimora 6042-X. Secondary 20 45 40N 73 02 17E
INDIA (CALCUTTA) CHAIN
6270 Balasore 5543. LORAN-C Master 21 29 08N 86 55 18E
Patpur 5543-W. Secondary 20 26 48N 85 49 47E
Diamond Harbor 5543-X. Secondary 22 10 18N 88 12 25E
6-9
PART II SATELLITE NAVIGATION
610A. General Selective Availability (SA), the denial of full accuracy, is

accomplished by manipulating the navigation message
Satellite navigation presently consists of two global orbit data (epsilon) and/or the satellite clock frequency
systems. Each may be considered a refinement of celestial (dither). Anti-spoofing (A-S) guards against fake
navigation, using artificial earth-orbiting satellites to form transmissions of satellite data by encrypting the P-code to
an electronic “constellation”, serviced by land-based form the Y-code.
control and tracking stations, and passively “sighted” by The Control Segment consists of five monitor stations,
mobile receivers. Both systems provide precise, global, three of which have uplink capabilities, located in
and continuous position-fixing capabilities, in all weather, Colorado, Hawaii, Kwajalein, Diego Garcia, and
to a properly equipped user. Ascension Island. The monitor stations use a GPS receiver
The U.S. Air Force system is the NAVSTAR Global to passively track all satellites in view, accumulating
Positioning System (GPS). GPS development began in ranging data from the satellites’ signals. The information
1973 and reached full operational capability in 1995. (The from the monitor stations is processed at the Master
U.S. Navy system, the Navy Navigation Satellite System Control Station (MCS), located in Colorado Springs,
(NAVSAT, also known as Transit) became operational in Colorado, to determine satellite orbits and to update the
1964 and ceased operation as a positioning and timing navigation message of each satellite. The updated
system on December 31, 1996. Users should recognize that information is transmitted to the satellites via ground
navigational equipment using the NAVSAT system should antennas. The ground antennas, located at Kwajelein,
no longer be used since any signals received will no longer Diego Garcia, and Ascension Island, are also used for
provide valid position or timing references.) transmitting and receiving satellite control information.
The Russian system is the Global Navigation Satellite The User Segment consists of antennas and
System (GLONASS). GLONASS became fully operational receiver-processors that provide positioning, velocity, and
in January 1996. precise timing to the user. The GPS receiver makes
time-of-arrival measurements of the satellite signals to
610B. GPS obtain the distance between the user and the satellites. The
distance calculations, known as pseudoranges, together
GPS is a highly precise satellite-based radionavigation with range rate information, are converted to yield system
system providing three-dimensional positioning, velocity, time and the user’s three-dimensional position and velocity
and time information. GPS is an all-weather system with with respect to the satellite system. A time coordination
continuous and worldwide coverage. GPS consists of three factor then relates the satellite system to earth coordinates.
segments: space, control, and user. A minimum of four pseudoranges are needed to produce a
The Space Segment is composed of 24 operational three-dimensional fix (latitude, longitude, and altitude).
satellites in six orbital planes. The satellites operate in GPS receivers compute fix information in terms of the
circular 20,200 km (10,900 nm) orbits at an inclination World Geodetic System (1984), which may need datum
angle, relative to the equator, of 55˚ and with a 12-hour shift correction before it can be accurately plotted on a
period. The satellites are spaced in orbit so that at any time, chart.
a minimum of six satellites are observable from any There are three different types of receivers. Sequential
position on earth, providing instantaneous position and receivers track only one satellite at a time, computing a fix
time information. after a series of pseudoranges have been sequentially
Each satellite transmits on two L band frequencies: measured; these receivers are inexpensive but slow.
1575.42 MHz (L1) and 1227.6 MHz (L2). Three Continuous receivers have at least four channels to process
pseudo-random noise (PRN) ranging codes are in use: information from several satellites simultaneously; these
– The coarse/acquisition (C/A) code has a 1.023 MHz chip process fix information the fastest. Multiplex receivers
rate, a period of one millisecond, and is used primarily to switch at a fast rate from satellite to satellite, receiving and
acquire the P-code. processing data from several satellites simultaneously,
– The precise (P) code has a 10.23 MHz rate, a period of producing a fix by a sort of “round-robin” process.
seven days, and is the principal navigation ranging code. GPS provides two levels of service for position
– The Y-code is used in place of the P-code whenever the determination:
anti-spoofing (A-S) mode of operation is activated. – The Standard Positioning Service (SPS) for general
L1 carries a P-code and a C/A-code. L2 carries the public use. (Until 1 May 2000, the SPS signal accuracy
P-code. A navigation data message is superimposed on the was intentionally degraded to protect U.S. national
codes. The same navigation data message is carried on security interests through the process of Selective
both frequencies. This message contains satellite Availability.)
ephemeris data, atmospheric propagation correction data, – The encoded Precise Positioning Service (PPS) primarily
and satellite clock bias. intended for use by the Department of Defense.
6 - 10
Accuracy of a GPS fix varies with the capability of the – Shakespeare Corporation - SeaWatch - Models
user equipment. SPS is the standard level of positioning 2040/Code Date 02A00, 2050/Code Date 03A00 (Code
and timing accuracy that is available, without restrictions, Dates are found on the antenna power supply.)
to any user on a continuous worldwide basis. SPS provides (For further information see:
positions with a horizontal accuracy of approximately 100 http://www.shakespeare-marine.com/ANTENNAS/TV/S
meters. (This accuracy specification includes the effects of AFETYALERT-TVANTENNAS.HTM
SA.) PPS provides full system accuracy to designated
users. Selective Availability was set to zero (ceased) as of 610C. DGPS
midnight (EDT) 1 May 2000. Users should experience a
GPS horizontal accuracy of 10-20 meters or better. The U.S. Coast Guard Navigation Center operates the
Maritime Differential GPS (DGPS) Service and the
NOTE: The following information is provided for developing Nationwide DGPS (NDGPS) Service,
informational purposes only and does not relieve any consisting of two control centers and over 60 remote
existing domestic or international safety, operational, or broadcast sites. The service broadcasts correction signals
material requirement: on marine radiobeacon frequencies to improve the
It has come to the attention of the U.S. Coast Guard and accuracy of and integrity to GPS-derived positions. The
Federal Communications Commission that certain system is operated to International Telecommunications
consumer electronics-grade active VHF/UHF marine Union (ITU) and Radio Technical Commission for
television antennas are causing operational degradation in Maritime Services (RTCM) standards. More than forty
the performance of GPS receivers. This interference may foreign maritime nations have implemented standard
be realized as a display of inaccurate position information DGPS services modeled after the U.S. Coast Guard’s
or a complete loss of GPS receiver acquisition and system to significantly enhance maritime safety in their
tracking ability. critical waterways.
The interference is not limited to the GPS equipment The U.S. Coast Guard’s Maritime DGPS Service
onboard the vessel with the installed active marine provides 10-meter (2 dRMS) navigation accuracy in all
television antennae. There have been reports of established coverage areas, integrity alarms for GPS and
interference occurring on other vessels and installations DGPS out-of-tolerance conditions within 10 seconds of
operating up to 2000 feet away from vessels using such detection, and an availability of 99.7% per month.
antennas. Typically the positional error of a DGPS position is 1 to 3
In one particular case, the interference caused the meters, greatly enhancing harbor entrance and approach
position of the vessel as displayed on the electronic chart to navigation. The system provides service for coastal
move erratically and dramatically, often across large coverage (to a minimum range of 20 nm from shore) of the
expanses of land. Various data displays indicated continental U.S., the Great Lakes, Puerto Rico/U.S. Virgin
erroneous information such as excessive speeds. In these Islands, portions of Alaska and Hawaii, and a greater part
instances the problem would occasionally correct itself of the Mississippi River Basin.
while at other times required resetting the system. DGPS reference stations determine range errors and
If you are experiencing recurring outages or degradation generate corrections for all GPS satellites in view. The
of your GPS receiver you should perform an on-off test of DGPS signals are broadcast, using existing Coast Guard
your TV antenna. If turning off the power to the antenna radiobeacons, on frequencies in the 285-325 kHz band.
results in improvement in the GPS receiver performance, Monitor stations independently verify the quality of the
the antenna may be the source of interference in the GPS DGPS broadcast.
band. In that case, you should contact the manufacturer of The Maritime DGPS service achieved Full Operational
the antenna and identify the symptoms. If the test is not Capability (FOC) on 15 March 1999. The Coast Guard
positive and the GPS interference persists, contact the advises that Coast Guard DGPS broadcasts should not be
watchstander at the Coast Guard Navigation Information used under any circumstances where a sudden system
Service at: failure or inaccuracy could constitute a safety hazard.
Users are further cautioned to use all available navigational
Telephone: (1) 703-313-5900. tools to ensure proper evaluation of positioning solutions.
E-mail: nisws@navcen.uscg.mil. The U.S. Department of Transportation is coordinating
the implementation of the Nationwide DGPS (NDGPS)
The following antennae models were indentified during Service. NDGPS is an expansion of the Maritime DGPS
investigations of GPS interference: network and, when complete, this service will provide
– TDP (Tandy Distribution Products) Electronics - MINI uniform differential GPS coverage of the continental U.S.
STATE Electronic Amplified UHF/VHF TV Antenna - and selected portions of Hawaii and Alaska regardless of
Models 5MS740, 5MS750, 5MS921 terrain, man made, and other surface obstructions. The
– Radio Shack Corporation - Long Range Amplified Omni predictable accuracy of the NDGPS service within all
Directional TV Antenna - Model 15-1624 established coverage areas is specified 10 meters (2dRMS)
(For further information see: or better. Typical system performance is better than 1 meter
http://support.radioshack.com/SUPPORT_VIDEO/DOC in the vicinity of the broadcast site. Achievable accuracy
68/68779.HTM) degrades at an approximate rate of 1 meter for each 150 km
6 - 11
distance from the broadcast site. The service also provides an altitude of 19,100 km. The satellites operate in circular
a GPS integrity monitoring capability; it gives an alarm to orbits with an inclination of 64.8˚ and a period of 11h 15m.
users within 6 seconds of detecting a fault with the signal All satellites transmit simultaneously, using two carrier
from any GPS satellite in view. Availability, on a per site frequencies in the L band, to allow users to correct for
per month basis, will be 99.9% for dual coverage areas and ionospheric delays of the transmitted signals. However,
99.7% for single coverage areas. The NDGPS Service will each satellite is allocated a particular frequency within the
achieve FOC when it provides dual coverage of the band, determined by the frequency channel number of the
continental U.S. and selected portions of Hawaii and satellite. These different frequencies allow the user’s
Alaska with single coverage elsewhere. receiver to identify the satellite. The L1 band ranges from
A complete list of all U.S. Coast Guard DGPS broadcast 1602.5625 MHz to 1615.5 MHz in increments of 0.5625
sites is available from the Navigation Center. For further MHz, while the L2 band ranges from 1246.4375 MHz to
information and/or operational questions regarding GPS or 1256.5 MHz in increments of 0.4375 MHz. Superimposed
DGPS, or to report GPS/DGPS service degradations, to the carrier frequency, the GLONASS satellites modulate
outages, and other incidents or anomalies, contact: their navigation message by using either or both a 5.11
MHz precision (P) code and/or and a 0.511 MHz
COMMANDING OFFICER coarse/acquisition (C/A) code. The satellites also transmit
U.S. COAST GUARD NAVIGATION CENTER ephemeris data, an almanac of the entire constellation, and
7323 TELEGRAPH ROAD correction parameters to the time scale. The coordinate
ALEXANDRIA VA 22315-3998 system of the GLONASS satellite orbits is defined by the
PZ-90 system, formerly the soviet Geodetic System
Telephone: (1) 703-313-5900. 1985/1990.
Fax: (1) 703-313-5920. The Coordinational Scientific Informational Center
(CSIC) of the Russian Space Forces provides official
The Navigation Information Service (NIS) is internet information on GLONASS status and plans, information
accessible through the U.S. Coast Guard Navigation and scientific method services to increase the efficiency of
Center Website at: GLONASS applications. For further information contact:
http://www.navcen.uscg.gov/ CSIC OF RUSSIAN SPACE FORCES

http://www.navcenter.org (Mirror site) PO BOX 14
MOSCOW 117279
610D. GLONASS RUSSIA
The Russian Global Navigation Satellite System Telephone: 7 095 333 72 00.
(GLONASS), similar to GPS, is a space-based navigation Fax: 7 095 333 81 33.
system that provides continuous, global, all-weather, E-mail: sfcsic@space.ru.
precise position, velocity and time information. The space
segment consists of 24 satellites in three orbital planes at Internet: http://www.glonass-center.ru/frame_e.html/
6 - 12
CHAPTER 7
AMVER
700A. Amver Participation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

700B. Communication Methods for Filing Amver Reports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
700C. Special Warnings to Mariners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
700D. Amver Voyage Report Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
7-1
CHAPTER 7
AMVER
700A. Amver Participation Instructions – Sailing Plan, containing complete routing information,
should be sent within a few hours before, upon, or
Amver is a worldwide voluntary vessel reporting system within a few hours after departure.
operated by the U.S. Coast Guard to promote safety of life – Position Report should be sent within 24 hours of
and property at sea. Amver’s mission is to quickly provide departure, and subsequently at least every 48 hours
search and rescue (SAR) authorities, on demand, accurate until arrival. The destination should also be included in
information on the position and characteristics of vessels Position Reports.
near a reported distress. Any merchant vessel on a voyage – Deviation Report should be sent as soon as any voyage
of greater than 24 hours to anywhere on the globe is information changes which could affect Amver’s
welcome to participate in Amver. In general, international ability to accurately predict the vessel’s position.
participation is voluntary regardless of owner’s nationality Changes in course or speed due to weather, ice, change
or vessel’s flag, voyage origin, or destination. However, in destination, or any other deviations more than
there are requirements for certain U.S. flag or U.S. interest 25NM from the original Sailing Plan should be
vessels. reported as soon as possible.
According to U.S. Maritime Administration (MARAD) – Arrival Report should be sent upon arrival at the port
regulations, the following vessels must report and regularly of destination.
update their voyages and positions to the Amver Center: – At the discretion of the Master, reports may be sent
– United States flag merchant vessels of 1,000 gross tons more frequently than the above schedule; for example,
or more, operating in foreign commerce. in heavy weather or under other adverse conditions.
– Foreign flag vessels of 1,000 gross tons or more, for
Amver also needs information that describes
which an Interim War Risk Insurance Binder has been
communications equipment, Inmarsat numbers, radio
issued under the provisions of Title XII, Merchant
watch schedule, medical personnel on board, and so forth.
Marine Act, 1936.
This information is collected separately, retained in the
In accordance with Title 47, Code of Federal Regulations
automatic data processing system, periodically validated,
(CFR), Ch. 1, Sec 80.905, the following vessels must
and used only for search and rescue purposes.
participate in the Amver system while engaged on any
voyage where the vessel is navigated in the open sea for
more than 24 hours: 700B. Communication Methods for Filing Amver
– United States vessels which transport more than six Reports
passengers for hire, operated more than 200 nautical
miles from the nearest land. The following methods are recommended for ships to
Information voluntarily provided by vessels to Amver is transmit Amver reports:
kept strictly confidential, and is protected by the Coast ELECTRONIC MAIL VIA THE INTERNET: If a ship
Guard. It will be released only for safety purposes. already has an inexpensive means of sending electronic
Amver’s greatest use is in providing SURface PICtures, mail to an internet address, this is a preferred method.
or SURPICs, to Rescue Coordination Centers (RCCs). A Electronic mail may be sent via satellite or via HF radio,
SURPIC either lists latitude/longitude or provides a depending on the ship’s equipment and arrangements with
graphical display of vessels near the position of a distress. communications providers ashore. Ships must be equipped
It is used by RCCs to coordinate the efforts of merchant with a personal computer, an interface between the
vessels and other resources to provide the best and most computer and the ship’s communications equipment, and
timely assistance possible to distressed vessels or persons the appropriate software. NOTE: The e-mail path on shore
at sea. to the Amver Center is essentially free, but the
There are four types of Amver reports: Sailing Plan, communications service provider may still charge from
Position Report, Deviation Report, and Arrival Report. ship-to-shore. Amver Address: amvermsg@amver.org or
NOTE: Departure Reports have been eliminated in favor of amvermsg@amver.com.
the more common practice of filing a combined Sailing AMVER/SEAS “COMPRESSED MESSAGE”
Plan/Departure Report upon departure. This combined (INMARSAT-C VIA TELENOR): Ships equipped with an
report is now called simply a Sailing Plan and it should be Inmarsat Standard C transceiver with floppy drive and
sent within a few hours before or after departure. The capability to transmit a binary file (ship’s GMDSS
information required for Position and Deviation Reports Inmarsat-C transceiver can be used); an IBM-compatible
has been increased to ensure enough information is computer (not part of the ship’s GMDSS System) with
provided to keep Amver accurate. Also, an end-of-report hard drive, 286 or better PC, VGA graphics; an interface
(Z line) line has been added to facilitate automatic between them; and the Amver/SEAS software (available
processing of Amver reports. free of charge from the U.S. National Oceanic and
What and when to report to Amver: Atmospheric Administration, NOAA), may send combined
7-3
AMVER
Amver/Weather observation messages free of charge via telefacsimile phone number to the U.S. Coast Guard
Telenor Land Earth Stations at: Operations Systems Center in Martinsburg, West Virginia
is (01) 304-264-2505.
– 001 Atlantic Ocean Region-West (AORW)-Southbury. The following method is discouraged:
– 101 Atlantic Ocean Region-East (AORE)-Southbury. CW (MORSE CODE): Due to the decline in its usage,
– 201 Pacific Ocean Region (POR)-Santa Paula. the number of coast stations supporting it, its high cost,
– 321 Indian Ocean Region (IOR)-Aussaguel. potential for error, and the mandatory carriage of upgraded
GMDSS communications capabilities, ships are
Amver Address: NOAA phone number entered in the
7.0 discouraged from using this medium.
“addressbook” (for further information on how to find the For more information regarding Amver reporting, visit
NOAA phone number and to correctly setup the the Amver Website at http://www.amver.com or contact:
addressbook, see the instruction sheet for your specific
brand of Inmarsat-C transceiver). Mr. Rick Kenney
Amver/SEAS software can be downloaded from the AMVER MARITIME RELATIONS OFFICE
NOAA SEAS Website at: USCG BATTERY PARK BUILDING
http://seas.amverseas.noaa.gov/seas/ 1 SOUTH STREET
or requested from: NEW YORK NY 10004-1499
TELENOR SATELLITE SERVICES, INC. Telephone: (1) 212-668-7762.

1101 WOOTTON PARKWAY Fax: (1) 212-668-7684.
ROCKVILLE MD 20852 E-mail: RKenney@BatteryNY.uscg.mil.
Telephone: (01) 301-838-7800 or 1-800-685-7898. 700C. Special Warnings to Mariners

E-mail: customer.care@telenor.com.
Special Warnings reflect U.S. Government policy on
HF RADIOTELEX: Amver reports may be filed via the international incidents with political ramifications. The
HF radiotelex service of U.S. Coast Guard content of such Special Warnings is the responsibility of
Communications Stations. Further information on how to the Department of State and National
send Amver messages by this method is provided in Geospatial-Intelligence Agency (NGA). NGA is the
Chapter 4, Appendix B (see COAST GUARD (HF disseminating agency for such messages since its Radio
RADIOTELEX)), or at the U.S. Coast Guard Navigation Navigational Warning Broadcast System can be received
Center Website: by all U.S. flag merchant ships.
http://www.navcen.uscg.gov/marcomms/high_frequency/c United States flag vessels in an affected area are required
all.htm to acknowledge receipt of a Special Warning through the
use of the Remarks line (X line) in their next regular
HF RADIO: Amver reports may also be filed by HF Amver report. For the purpose of this requirement, all
radio at no cost via U.S. Coast Guard contractual vessels are deemed to be in an affected area if within 500
agreement with the following ShipCom Radio Network miles or 1 day’s steaming of a reported incident.
public coast stations (see Chapter 4, Appendix B, for
complete frequency listing): 700D. Amver Voyage Report Types
– Mobile Marine Radio (WLO)
– Mobile (WCL) There are four types of Amver Reports: Sailing Plan,
– Marina del Ray (KNN) Position, Deviation, and Arrival Reports.
– Seattle (KLB) REPORTING FORMAT: Each Amver message consists
Internet: http://www.wloradio.com or of report lines. There are 15 types of lines. The first line in
http://www.shipcom.com every report begins with the word “AMVER” followed by
a slash (/), a two letter code identifying the report type, and
TELEX: Amver reports may be filed via telex using ends with a double slash (//). Each remaining line begins
either satellite (code 43) or HF radio. Ships must pay the with a specific letter followed by a slash (/) to identify the
tariffs for satellite communications. Telex is a preferred line type. The remainder of each line contains one or more
method when less costly methods are not available. Amver data fields separated by single slashes (/). Each line ends
Address: (0) (230) 127594 AMVER NYK. with a double slash (//). All reports should end with an
TELEFAX: In the event other communications media end-of-report line (Z line).
are unavailable or inaccessible, Amver reports may be REPORTING DATA: Amver participants need to be
faxed directly to the Amver Computer Center. However, familiar with the four types of reports. Report identifiers
this is the least desirable method of communications, since are as follows:
it involves manual input of information to the computer
vice electronic processing. NOTE: Do not fax reports to AMVER/SP// denotes Sailing Plan.
the Amver Maritime Relations Office in New York, since it AMVER/PR// denotes Position Report.
is not staffed 24 X 7, and relay and processing of reports is AMVER/DR// denotes Deviation Report.
delayed pending normal (Mon.-Fri.) business hours. The AMVER/FR// denotes Arrival Report.
7-4
AMVER
An example and explanation of each of the four types of least in the first few reports, in case Amver has not
the Amver reports follows. Numbers in parentheses refer to received the Sailing Plan information.
footnotes at the end of the section.
SAILING PLAN: A Sailing Plan should be sent within a Example:
few hours before, upon, or within a few hours after AMVER/PR//
departure. It must include enough information to predict A/SANDY JOAN/ABCD//
the vessel’s actual position within 25 nautical miles at any B/120300Z//
time during the voyage, assuming the Sailing Plan is C/3630N/02330E//
followed exactly. The L lines are used to report route E/145//
information. These lines are the most complex lines in an F/126//
Amver report but they are critical to Amver’s success. I/GIBRALTAR/3600N/00600W/140730Z//
Complete route information should be provided in all M/GKM//
Sailing Plans and also in Deviation Reports when the X/NEXT REPORT 131800Z//
vessel’s route or destination changes. Y/MAREP//
Z/EOR//
Example:
Explanation:
AMVER/SP// Required items:
A/SANDY JOAN/ABCD// AMVER line/PR//
B/110935Z// line A/vessel name/International Radio Call Sign//
E/145// line B/time of position//(1)
F/126// line C/latitude/longitude//(2)(3)
G/NOVOROSSIYSK/4470N/03780E//
line E/current course//(5)
I/GIBRALTAR/3600N/00600W/140730Z//
line F/estimated average speed//(6)
L/RL/140/4130N/02910E/112000Z//
line Y/relay instructions//(9)
L/RL/140/4010N/02620E/112300Z//
line Z/end of report//(10)
L/RL/140/3630N/02330E/120300Z//
L/RL/140/3650N/01520E/121500Z// Recommended items:
L/RL/140/3760N/01000E/130100Z// line I/destination/latitude/longitude/ estimated time
L/RL/060// of arrival//(1)(2)(3)
M/GKA/GKM// Optional items:
V/MD/NURSE// line M/current coastal radio station or satellite
X/NEXT REPORT 120900Z// number/next coastal radio station, if any//
X/SITOR INSTALLED. SELCALL NUMBER IS 99999// line X/up to 65 characters of amplifying comments//
Y/MAREP// (8)(9)
Z/EOR//
DEVIATION REPORT: Deviation Reports should be
Explanation: sent whenever the vessel deviates significantly (more than
Required items: 25NM) from its Sailing Plan. Other situations in which
AMVER line/SP// Deviation Reports should be sent include, but are not
line A/vessel name/International Radio Call Sign// limited to: Change in destination, diverting to evacuate a
line B/time//(1) sick or injured crewmember, diverting to avoid heavy
line E/current course//(5) weather, any change of route (as, for example, change
line F/estimated average speed//(6) based on recommendations from a vessel routing service),
line G/port of departure/latitude/longitude//(2) (3) stopping to make repairs or await orders, change in
line I/destination/latitude/longitude/ estimated time anticipated average speed of one knot or more, etc.
of arrival//(1)(2)(3)
line L/route information //(1)(3)(4) Example:
line Y/relay instructions//(9)
line Z/end of report//(10) AMVER/DR//
A/SANDY JOAN/ABCD//
Optional items: B/120600Z//
line M/current coastal radio station or satellite C/3600N/02245E//
number/next coastal radio station, if any// E/095//
line V/onboard medical resources//(7) F/220//
line X/up to 65 characters of amplifying I/NEW YORK US/4040N/07380W/180800Z//
comments//(8) L/GC/220//
M/GKA/WSL/NMN//
POSITION REPORT: A Position Report should be sent X/DIVERTING BEST SPEED TO NEW YORK//
within 24 hours of departing port and at least once every 48 Y/MAREP//
hours thereafter. The destination should be included, at Z/EOR//
7-5
AMVER
Explanation appropriate, the first three letters of the English

Required items: language month are used. The following examples are
AMVER line/DR// acceptable:
line A/vessel name/International Radio Call B/290900Z//
Sign// B/290900Z DEC//
line B/time of position//(1) B/290900GMT//
line C/latitude/longitude//(2)(3) B/290900UTC//
line E/current course//(5) (2) Both port name and geographic position are required
line F/estimated average speed//(6) from U.S. flag vessels.
line Y/relay instructions//(9) (3) Latitude is a four-digit group expressed in degrees and
line Z/end of report//(10) minutes, suffixed with N for north or S for south.
Required items if destination or route changes: Longitude is a five-digit group expressed in degrees
line I/destination/latitude/longitude/ estimated and minutes, and suffixed with E for east or W for
time of arrival//(1)(2)(3) west. For example:
line L/route information//(4) G/4000N/03500W//.
Recommended items (in cases when not required): (4) The L lines contain most of the sailing plan
line I/destination/latitude/longitude/ estimated information. As many L lines as needed may be used
time of arrival//(1)(2)(3) to describe the vessel’s intended route. Detailed route
Optional items: information caused by maneuvering over short
line M/current coastal radio station or satellite distances near coasts should not be included. An
number/next coastal radio station, if any// approximate route using fewer turn points and the
line X/up to 65 characters of amplifying “coastal” navigation method should be provided.
comments//(8) However, enough turn points should be provided to
keep Amver’s plot of the vessel’s position within 25
ARRIVAL REPORT: Arrival Reports should be sent nautical miles of the vessel’s true position. All L lines
upon arrival in the immediate vicinity of the destination except the last one in the report require the following
port, such as at the sea buoy or pilot station. This report information: /navigation method/leg
properly terminates the voyage in Amver’s computer and speed/latitude/longitude/port or landmark
ensures the vessel will not appear on an Amver SURPIC name/ETA/estimated time of departure. For example:
until its next voyage. L/RL/125/0258N/07710W/ABACO/111200Z//.
L/RL/125/0251N/07910W/NWPROVCHAN/11214
Example: 5Z//.
L/RL/125/0248N/08020W/120255Z//.
AMVER/FR// L/RL/125//.
A/SANDY JOAN/ABCD// The navigation method is required. There are three
K/NEW YORK/4040N/07380W/180830Z// types of navigation methods recognized by Amver:
X/PROBLEMS WITH MF XMTR. AGENT ADVISED// Rhumb Line (RL), Great Circle (GC) and Coastal
Y/MAREP// (COASTAL).
Z/EOR//
Leg speed is useful, but is not required. See footnote
(6).
Explanation:
Latitude/longitude are required. See footnote (3).
Required items:
Port or landmark name is useful, but is not required.
AMVER line/FR//
line A/vessel name/International Radio Call Sign// ETA is required. See footnote (1).
line K/port name/latitude/longitude/time of arrival// ETD is required if the ship will layover at an
(1)(2)(3) intermediate point. See footnote (1).
line Y/relay instructions//(9) A final navigation method is required to route the
line Z/end of report//(10) ship to its destination.
Optional items: Final leg speed is useful, but not required.
line X/up to 65 characters of amplifying comments// (5) True course is a three-digit group.
(8) (6) Speed is a three-digit group in knots and tenths of
knots. For example, 20.5 knots would be expressed as
Footnotes: 205, without a decimal point.
(1) Indicates the time associated with the position given in (7) If the optional V line is used, one or more of the
the C and G lines of the report. All times must be following is required:
expressed as a six-digit group giving date of month /MD/ for medical doctor or physician.
(first two digits), hours and minutes (last four digits). /PA/ for physician’s assistant or paramedic.
Only Universal Coordinated Time (i.e., Greenwich /NURSE/ for trained nurse.
mean time) is to be used. The six-digit date-time-group /NONE/.
is to be followed by either Z, GMT or UTC. The month For example:
is optional. If addition of the month is deemed V/MD/NURSE//
7.0
7-6
AMVER
It is important to accurately report a vessel’s medical Title 46 CFR, all U.S. flag merchant vessels and
resources EVERY VOYAGE. Medically trained certain other vessels are REQUIRED to report their
personnel are very scarce on the high seas and this positions to MARAD via participation in the Amver
makes them extremely valuable in cases where a system. Such vessels must include the keyword
member of a vessel’s crew becomes ill or injured. “MAREP” in the Y line of every Amver report.
(8) Any information provided in the remarks line will be Presently, Amver and the Japanese Regional
stored in Amver’s automatic data processing system Reporting System (JASREP) cooperate with each
for later review. However, no particular action will be other by accepting and complying with relay requests.
taken, nor will the information be routinely passed to For example:
other organizations. The remarks line cannot be used Y/MAREP//
as a substitute for sending information to other
search-and-rescue authorities or organizations. Y/JASREP//
However, Amver will, at the request of other SAR Y/JASREP/MAREP//
authorities, forward remarks line information to the Y/AMVER//
requesting agencies. Y/AMVER/MAREP//
Changes in vessel data: When a vessel changes name,
flag, owners, etc., it is important to include the number (10) EOR (End of Report) must be the last line in every
assigned the ship in Lloyds Register of Shipping to Amver report as it is used by the Amver computer to
ensure the Amver database is kept current. signal the end of the report.
(9) The Y line is used to request relay of the Amver report For example:
to certain other reporting systems. In accordance with Z/EOR//
7-7
CHAPTER 8
COMMUNICATION INSTRUCTIONS FOR U.S. MERCHANT SHIPS
Chapter 8 sets forth instructions and procedures for U.S. merchant vessels to establish communucations in order to receive
and send information to/from the Homeland Defense (HLD) organization, Naval Cooperation and Guidance for Shipping
(NCAGS), during normal operations or times of crisis.
PART I U.S. NAVAL COOPERATION AND GUIDANCE FOR SHIPPING (NCAGS)
800A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

800B. History of NCAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
800C. NCAGS Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
800D. Questions and Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
PART II COORDINATION WITH NCAGS
810A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

810B. Elements of the NCAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
PART III COMMUNICATIONS WITH NCAGS
820A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

820B. Methods of Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
820C. Forms and Message Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
PART IV CONTAMINATION PREDICTION SYSTEM FOR MERCHANT SHIPS AT SEA

AND THE MERWARN SYSTEM
830A. Significance of NBC Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

830B. The MERWARN System, Warnings to Merchant Ships at Sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
830C. MERWARN Originating and Diversion Authorities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
830D. Precedence of NBC Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
830E. Method of Promulgation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
830F. Relay Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
830G. Danger Zones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
830H. MERWARN NBC EDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
830I. MERWARN NBC 3 NUC, Standard Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
830J. MERWARN NBC 3 NUC, Plain Language Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
830K. MERWARN NBC CDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
830L. MERWARN NBC 3 CHEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
830M. MERWARN DIVERSION ORDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
830N. Other Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
830O. Ground Zero. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
830P. Effective Downwind Direction and Downwind Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
830Q. Fallout Pattern Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
830R. Fallout Plotting in Merchant Ships . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
830S. Plotting from MERWARN NBC 3 NUC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
830T. Contamination Plotting in Merchant Ships . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
APPENDIX A Instruction to Masters in an Emergency on Defense Against Nuclear Fallout. . . . . . . . . . . . . . . . . . 8-15
8-1
CHAPTER 8
CHAPTER 8 SETS FORTH INSTRUCTIONS AND PROCEDURES FOR U.S. MERCHANT VESSELS TO ESTABLISH COMMUNUCATIONS IN ORDER TO RECEIVE AND SEND INFORMATION TO/FROM THE HOMELAND DEFENSE (HLD) ORGANIZATION, NAVAL COOPERATION AND GUIDANCE FOR SHIPPING (NCAGS), DURING NORMAL OPERATIONS OR TIMES OF CRISIS.
.
PART I U.S. NAVAL COOPERATION AND GUIDANCE FOR SHIPPING (NCAGS)
800A. General allied merchant vessels the information needed to help

prevent terrorist attacks at sea or inport.
The purpose of this section is to provide guidance to ship
owners, operators, Masters, and officers on the 800C. NCAGS Organization
arrangements for Naval Cooperation and Guidance for
Shipping (NCAGS) in order to enhance the safety of NCAGS doctrine has evolved with the changing threat
merchant ships and to support military operations. It posed both on merchant shipping and by merchant
provides information on the provision of NCAGS support. shipping in the context of regional operations and maritime
In periods of crisis, conflict, national emergency or war, HLD. The NCAGS organization addresses both the
naval authorities may direct the movement of merchant traditional protection and control of shipping in a region
ships (including routing and diversion) so that they may be and the emerging requirement of maritime HLD, where
better protected from hostilities and not interfere with merchant shipping may be either the protagonist, or target,
possible active Naval and/or Joint Military Operations. The requiring the establishment of communications to increase
NCAGS organization is the principal U.S. resource to carry maritime situational awareness of merchant shipping.
out this function. The purpose of NCAGS is to ensure the NCAGS doctrine applies to maritime HLD, contingency
efficient management and safe passage of merchant ships. support, and general economic shipping.
This mission primarily involves: Types of contingency support shipping include naval
– the establishment of an organization and framework for vessels of the Military Sealift Command (MSC), shipping
communicating directions, advisories, concerns, and/or operated or chartered by the U.S. Government to support
information among operational forces, merchant naval operations or to meet U.S. policy objectives, crisis
shipping, and maritime organizations; response shipping, and relief shipping chartered by
– the deconfliction of merchant vessel sailings/operations, government agencies.
for safety to preclude interference with naval activities;
– and making recommendations to the theater/ operational Types of economic shipping include vessels engaged in
commander on the extent and type of protection that may normal commercial trade worldwide, regardless of flag or
be provided to merchant shipping. ownership, or such other shipping that is not under the
control or direction of the U.S. Government.
800B. History of NCAGS
Specific to maritime HLD operations in the United
NCAGS was formerly known as NCAPS (Naval States Northern Command (USNORTHCOM) Area of
Coordination and Protection of Shipping). NCAPS was Responsibility (AOR), a new organization was developed
originally established to meet a Cold War-era national need in an effort to execute the required mission to improve
to protect merchant shipping against a global open ocean maritime HLD and to support the USCG as the lead federal
threat. NCAPS policy included escorting and routing of agency for maritime Homeland Security (HLS). As an
large convoys of merchant shipping. element of the Joint Force Maritime Component
The threat to merchant shipping has changed and so has Commander (JFMCC), the NCAGS organization provides
the Naval Control of Shipping (NCS) mission. The primary direct support to USNORTHCOM’s mission of conducting
threat to U.S. merchant vessels is no longer considered to operations to deter, prevent, and defeat maritime threats
be traditional naval vessels under the flag of a known and aggression. NCAGS works jointly with the United
enemy; instead, the threat is terrorism. The NCAGS States Coast Guard (USCG). The NCAGS organization
mission is to provide U.S. military commanders the consists of Shipping Coordination Centers (SCCs)
information necessary to provide Maritime Domain geographically positioned to assist in improving merchant
Awareness (MDA). The goal of MDA is to assist in shipping coordination and providing positional
Homeland Defense (HLD) by maintaining as much information of merchant vessels operating in the
real-time information as possible regarding merchant USNORTHCOM AOR. The SCCs are the first step in
shipping, such as positions, destinations, cargo, etc. As a creating a global merchant vessel tracking capability for
result, the NCAGS organization can provide U.S. and the maritime domain.
8-3
800D. Questions and Comments U.S. FLEET FORCES COMMAND

MR. ERIC SHAFFER N35
Ship’s Officers, ship owners, and operators are 1562 MITSCHER AVENUE SUITE 250
encouraged to submit questions and comments on NORFOLK VA 23551-2487
procedures outlined in this chapter to:
8-4
8-5
THE WORLD WITH U.S. COMMANDERS’ AREAS OF RESPONSIBILITY

PART II COORDINATION WITH NCAGS
810A. General 810B. Elements of the NCAGS
The primary organization responsible for executing the The NCAGS is flexible in order to meet the needs of the
NCAGS mission is the Shipping Coordination Center military commander and merchant shipping. It may
(SCC). A SCC bridges the gap between military leaders comprise some or all of the following elements tailored to
responsible for HLD and U.S. merchant shipping. NCAGS suit the situation depending on the level of NCAGS
support provided by the SCC includes military support required.
cooperation, guidance, advice, assistance, and supervision – Shipping Coordination Center (SCC): The SCC is a
to merchant shipping to enhance the safety of U.S. and permanent organization, tasked with establishing and
allied merchant ships and to support military operations by maintaining links with the military, merchant shipping,
maintaining awareness of merchant shipping positions HLD and HLS agencies, such as the USCG. The SCC
around the U.S. The purpose of NCAGS is to make use of will:
cooperation between military and civil maritime – Provide MDA by maintaining a merchant shipping
authorities and agencies and the commercial shipping plot of the assigned AOR.
industry in order to facilitate an uninterrupted flow of – Generate Notice to Mariners (NOTMARs) as
maritime commerce in periods of peace and conflict and necessary regarding acts of terrorism or military
simultaneously minimize disruption to military operations. operations.
The cooperation and frequent exchange of information – Advise civil maritime authorities, via Maritime
achieve this goal. An accurate assessment of the merchant Administration (MARAD), of general shipping risks
shipping picture is critical to the accomplishment of this in the area.
goal. Masters will be asked to provide basic information – Establish Shipping Risk Areas (SRAs) and
concerning their ship, cargo, and voyage details. In times recommend routing of shipping.
of increased tension or conflict, additional information – Shipping Coordination Team (SCT): The SCT is an
may be requested. The response of Masters to information expeditionary team that can be deployed to a specific
requests is one of the most important aspects of NCAGS. region to gather information on local merchant shipping
The commercial sensitivity of the information supplied by and naval operations and will provide the means to brief
the merchant shipping community will be respected and merchant shipping on risks, routing, and organization for
protected. protection. The SCT will, depending on the level of an
The NCAGS organization will in turn ensure that operation, encompass coordination and guidance to local
appropriate military authorities are advised of these details military commanders and merchant Masters. The
for monitoring during the voyage. If deemed necessary, location of SCTs can be ashore or afloat. The SCT liaises
they will provide the merchant Master with up-to-date with local and regional authorities including port
information concerning the situation and specific authorities, shipping agents, and local shipping
information on the voyage. This information can range companies and reports ship movements to local military
from basic situation briefs to the provision of routes, lead commanders to help deconflict military operations with
through, or escort. Safe passage responsibility remains merchant shipping.
with the Master. – NCAGS Liaison Officer (LNO): An officer deployed
aboard a merchant ship to provide liaison between the
The principal benefits of NCAGS to merchant shipping merchant ship Master and military authorities. The LNO
include: is the naval advisor to the merchant Master. His position
– Improved safety and security. on board does not affect the Master’s responsibilities for
– Minimized disruptions to passages through areas where the safe navigation and safe handling of the ship. The
military operations are being conducted. LNO makes military knowledge available to the Master
– Quicker reaction to terrorism. to allow the Master to understand the naval and military
– A better understanding of military constraints. requirements that are applicable.
– Minimized disruption to commercial schedules. – Shipping Risk Area (SRA): When necessary, a SRA may
be recommended by a SCC or SCT. A SRA is a
The principal benefits of NCAGS to the military geographically defined portion of the NCAGS area
commander include: where an elevated risk to merchant shipping exists. Risks
– A more comprehensive picture of merchant activity and can include potentially hostile acts, navigational
positions of merchant ships. restrictions that require an elevated closer management
– Deconfliction of merchant ships in military operations. of shipping traffic, or naval forces operations that may
– Enhanced safety and security of merchant ships. conflict with routine safe passage. More than one SRA
– Improved effectiveness of military operations. can be established within an NCAGS area. SRAs are
– A better understanding of commercial constraints. established by the local military commander.
PART III COMMUNICATIONS WITH NCAGS
820A. General contact or to update previous information. A CRG should

be positioned in such a way that a minimum notice period
The role of NCAGS in keeping the seas safe and of 36 hours is available to merchant ships to contact their
providing the essential framework needed to allow owners/operators for onward passage instructions before
commercial and military shipping to operate together in a reaching the AOR. The CRG will normally be represented
crisis is dependent on effective communications with as lines of latitude or longitude that encompasses the area
merchant shipping at sea or inport. The SCC or SCT will concerned.
exchange data at the unclassified level with merchant Ships will be notified of the CRG details for the AOR
shipping authorities and with elements of the NCAGS and the reporting requirements will be promulgated to
organization. This part provides guidance to Masters who merchant ships through a variety of means, such as by the
may need to communicate with military forces. SCC, SCT advisory notices, or NAVWARNs. Instructions
Communications with merchant ships by the military are will normally contain details of the information required,
accomplished via the Global Maritime Distress and Safety the occasions of reporting, and to whom the report is to be
System (GMDSS) and other commercial means. Under sent. Ships will be asked to forward a Format Alfa before
normal circumstances, ships working with NCAGS will arriving at the CRG.
maintain their normal peacetime communications.
However, if the situation so dictates, they may be required 820C. Forms and Message Formats
to maintain additional communications methods.
(Ref: ATP-2, Vol. II)
820B. Methods of Communication
Format Alfa: Format Alfa is the principal means by
GMDSS: Every effort is made by the NCAGS which merchant ship data is collected for use by the
organization to provide communications for merchant NCAGS. The Format Alfa will be requested to be
vessels to either the SCC or SCT so that ships can forwarded at least 24 hours prior to entering the area of
communicate easily and regularly with them using operations and then, if possible, every 6 hours until exiting
Inmarsat-C. Generally telex, fax, email, and voice, when the area of operations. The form is divided into four
available, are used as the primary means for the NCAGS sections:
organization to contact ships either through owners, – Section A covers basic details of the vessel.
directly to the ships if this has been made available, or via – Section B covers details of the current voyage.
commercial organizations who specialize in passing – Section C covers details of the ship’s operator.
messages. – Section D covers cargo data.
Navigational Warnings (NAVWARNs)/Notice to NOTE: Date and Time should be entered either by the
Mariners (NOTMARs): The military authorities will pass date followed by a four digit time (18.Oct 97 21.00 UTC)
safety information for the NCAGS AOR, promulgated by or a Date-time Group (DTG). The military method of
broadcast methods, via NAVWARNs, NOTMARs, and expressing date and time is contained within the DTG and
MARAD Advisories. These warnings will describe is written in the following manner:
possible military operations in an AOR. Notices will DDHHMMZ MON YY
include toll free telephone numbers a merchant Master or therefore, the DTG 182100Z JUL 98 describes a time of
agent can call to obtain real-time information regarding an 21:00 (GMT/UTC) on the 18 July 1998. Military units
ongoing crisis or military operation. routinely describe GMT/UTC as time zone “Zulu”
Military Points of Contact: A SCC, SCT, or NCAGS abbreviated to “Z.”
LNO can provide merchant shipping with their main
means of communications in an elevated risk situation via – Section A - Ship Data:
GMDSS, NAVWARNs/NOTMARs, or embarked LNO. (1) Ship’s name.
Communication Reporting Gate (CRG): In an AOR, (2) International callsign.
there is a good possibility that your ship will be called, or (3) Type of vessel.
challenged, by naval vessels or military aircraft on the (4) Flag of registry.
VHF calling frequency. To allow merchant ships to contact (5) IMO number.
naval vessels in the AOR, information will be distributed (6) Port of registry.
directly to the Master via LNO, naval vessels in the local (7) Overall length.
area, or local advisory notices by various means including, (8) Vessel’s width.
but not limited to, NOTMARs, e-mail, or websites. (9) Maximum draft for present voyage.
However, naval units can normally be contacted through (10) Vessel’s gross tonnage.
standard calling VHF frequencies. (11) Speed:
CRG is established to provide a position/line for (a) Service speed.
merchant ships to call NCAGS in order to establish initial (b) Maximum speed.
8-7
(c) Minimum speed. Sailing Instructions (SI): SI are issued to all ships
(12) Significant appearance of vessel for optical transiting a SRA and any other ships requiring specific
recognition. guidance. The issue of a SI indicates that the Master has
(13) Inmarsat/DSC number. accepted the routing guidance contained within the SI.
(14) Name of communication station being copied. NCAGS will monitor the ship’s passage and divert the ship
(15) State whether pocket-sized automatic crypto if the threat or risk changes and a diversion message will
equipment (PACE) and keying material is held. be sent to the Master.
(16) Fax number. Diversion Order: A message from NCAGS ordering a
(17) Email address or telex number. diversion from the existing route for any reason. The first
(18) Other communication means. words of the text will be the identifier “DIVERSION
ORDER” followed by:
– Section B - Voyage Data: (1) The reason for diversion.
(19) Intended movement - description of passage. (2) The position or time at which the diversion is to take
(20) Last port/country of call including actual date and place.
time of departure from last port. (3) New positions through which ships are to pass. Each
(21) Next port of call, including ETA at next port of call. position is to be preceded by its two letter designator.
(22) Current position. (4) The immediate destination and amended ETA.
(23) Date/time and position entering the region.
(a - x) Waypoints of intended track through AOR Example:
(date/time - latitudes/longitudes). DIVERSION ORDER
(24) Position and date/time of departing the region. (1) Acts of terrorism in your vicinity.
(2) Divert at position AB.
– Section C - Operator Data: (3) Pass through new positions BL 4245N04800W, BM
(25) Name of ship owner/operator including address of 4230N05500W, then to original position AE and original
ship owner, name of charterer (if any), and address of track.
operator/charterer. (4) Amended ETA Baltimore 160800Z Jan.
(26) Flag of ship operator.
(27) Email address of the above. Passage Amendment: This message is to be sent by a
(28) Telephone number of above. ship to report passage amendments involving changes in
(29) Fax number of above. destination or differences of greater than 6 hours variance
from the original passage plan intentions reported by
– Section D - Cargo Data: Format Alfa. The message will be addressed to the original
(30) Quantity and nature of main/relevant cargo. addressee of the Format Alfa. The first words of the text
(31) Shippers of main/relevant cargo (name and will be the identifier “FORMAT ALFA PASSAGE
address). AMENDMENT” followed by:
(32) Origin of main/relevant cargo. (1) The international call sign, IMO number, and name of
(33) Consignee of main/relevant cargo. the ship.
(34) Final destination of main/relevant cargo. (2) Position at . . . . . .
(35) Special queries appropriate to current operation (3) Great circle or rhumb line track and speed.
such as “State if any cargo/person is carried being (4) Name of next port of call.
subject to UN sanctions, by YES or NO (if the answer to (5) ETA at next port of call.
the query is YES, then describe on a separate sheet).”
Example:
Ship Data Cards: Ship Data Cards are amplifications of FORMAT ALFA PASSAGE AMENDMENT
the information provided by the merchant ship on the (1) WGLW, 9076236, SS YOUNG AMERICA.
Format Alfa that is used to facilitate cooperation between (2) 4315N 03515W at 181500Z Aug.
merchant ships and military assets. Masters will be asked (3) Rhumb line/l9.
to supply only information that is not available from other (4) Baltimore.
open sources, such as agents and the Internet. (5) 221200Z Aug.
8-8
PART IV CONTAMINATION PREDICTION SYSTEM FOR MERCHANT SHIPS AT SEA

AND THEMERWARN SYSTEM
830A. Significance of NBC Warnings 830E. Method of Promulgation
Radioactive fallout from nuclear explosions and chemical All MERWARN NBC EDM, MERWARN NBC CDM,
and biological contamination (hereafter collectively referred MERWARN NBC 3 CHEM and NBC 3 NUC messages
to as contamination) on sea and land targets, particularly the will be transmitted in plain language, using GMT,
latter, may affect large areas of adjacent waters. The areas preceded by the international safety signal, from the
affected will depend upon the prevailing wind conditions, and appropriate MERCOMMS station and from all the coastal
any ship close to or approaching these areas will be in grave radio stations of the area concerned. Masters need not
danger. It is therefore essential that shipping should be warned concern themselves with the identity of the MERWARN
of the fallout hazards and contamination in order that: originators, but only with the sea areas covered by each
– Passive defense measures, such as activating washdown message.
systems, may be taken.
– Course may be altered, if necessary, to avoid the 830F. Relay Responsibilities
dangerous zones.
Originating authorities are responsible for relaying to:
830B. The MERWARN System, Warnings to – The appropriate Coast Earth Station (Inmarsat CES),
Merchant Ships at Sea Coast Radio Station (CRS) under their control, and/or
other CRS in their geographic area.
A simplified contamination warning system has been – Their own national authorities (for transmission to
established throughout NATO for broadcasting, via merchant ships not yet copying MERCOMMS).
MERCOMMS and coastal radio stations, warnings of – Adjacent MERWARN originators and shipping diverting
contamination dangerous to merchant shipping. This authorities within the geographical area affected by each
system calls for the origination, by NATO naval MERWARN NBC 3 NUC message.
authorities, of five types of messages: NOTE: Adjacent MERWARN originators are
– MERWARN NBC Effective Downwind Message responsible for relaying to CES/CRS under their control as
(MERWARN NBC EDM). necessary.
– MERWARN NBC 3 NUC.
– MERWARN NBC Chemical Downwind Message 830G. Danger Zones
(MERWARN NBC CDM).
– MERWARN NBC 3 CHEM. All shipping in waters out to 200 nautical miles from any
– MERWARN DIVERSION ORDER. coast at the outset of war must be regarded as being in an
area of possible fallout danger from nuclear attacks on
In some cases it may be better to provide warning of shore.
contamination by means of general plain language
messages rather than by these formats. 830H. MERWARN NBC EDM
830C. MERWARN Originating and Diversion MERWARN NBC EDM is a prediction, for a specified
Authorities sea area and time interval, of the fallout which will result
from a 1 megaton (MT) nuclear surface explosion. It will
MERWARN Originating and Diversion authorities will give the Master of a ship, observing a nuclear explosion, an
be designated by national or NATO commanders before immediate indication of the area likely to be affected by
commencement of operations. fallout.
MERWARN NBC EDM will be issued at 12 hour
830D. Precedence of NBC Messages intervals from the time of activation of the MERCOMMS
system, and will be valid 12 hours ahead from the date and
All MERWARN NBC messages should be given FLASH time given in the first line of the message (line A). In the
(Z) precedence to ensure rapid handling on any military event of changing meteorological conditions it may be
circuit between the originating authority and the necessary for the originating authorities to issue
MERCOMMS and/or coastal radio stations. This MERWARN NBC EDM more frequently. The original
precedence should not be used where the rules for the use of MERWARN NBC EDM will automatically be overruled
the international safety signal (SECURITAY for voice by the latest MERWARN EDM issued.
circuits) apply. The following standard format will be used:
8-9
A. Message identifier (MERWARN NBC EDM) and ALFA/UK/NBCC/02-001/N//

date-time group (GMT) from which valid for 12 hours DELTA/021405ZSEP1999//
ahead. FOXTROT/451230N014312E/AA//
B. Specified sea area for which valid. PAPAB/012KTS/028NM/02NM/272DGT/312DGT//
C. Effective downwind direction (in degrees, three digits)
and effective downwind speed (in knots, three digits). 830J. MERWARN NBC 3 NUC, Plain Language
D. Downwind distance of Zone 1 (in nautical miles, three Format
digits).
E. Additional information. The MERWARN NBC 3 NUC standard format may not
be suitable after a multiple nuclear attack which produces
Example: fallout from several bursts in a large or complex target
area. In such cases warnings will be plain language
A. MERWARN NBC EDM 180600ZSEP1999 statements of a more general nature, indicating area
B. BALTIC SEA WEST OF 15°00′E affected and expected movement of the fallout.
C. 045-020
D. 078 Example 1:
E. NIL
NOTE: Sets B, C, and D may be repeated for different sea MERWARN NBC 3 NUC
areas should this be considered necessary.
ALFA/UK/02-001/N//
830I. MERWARN NBC 3 NUC, Standard DELTA/021405ZSEP1999//
Format Fallout extends from Glasgow area to eastern Ireland at
021405Z and is spreading westwards with 12 Knots. Irish
MERWARN NBC 3 NUC will be issued after a nuclear Sea is likely to be affected within an area of 60 nautical
attack producing fallout, and gives fallout data for a miles of the British coast.
specific explosion or series of explosions, which will be
identified in the message. Example 2:
MERWARN NBC 3 NUC messages are issued as soon
as possible after the attack, and at 6 hour intervals (to the MERWARN NBC 3 NUC
nearest hour) thereafter, for as long as fallout danger exists.
They contain information which enables the Master of a ALFA/IT/15-001/N//
ship to plot the danger area. DELTA/150630ZFEB1999//
The standard format of MERWARN NBC 3 NUC Fallout is estimated to be occurring at 150830Z over
contains the sets ALFA, DELTA, FOXTROT, and PAPAB Adriatic Sea east of the coast line Bari/Brindisi up to a
of the military NBC 3 NUC message. distance of 30 nautical miles. Fallout is moving
The MERWARN NBC 3 NUC has the following south-eastwards with 016 Knots, getting weaker. It is not
structure: expected to be dangerous after 151000Z.
MERWARN NBC 3 NUC (Message identifier) 830K. MERWARN NBC CDM
The MERWARN NBC CDM message contains

ALFA: Strike Serial Number (as defined by the naval information needed for CHEM/BIO hazard prediction by
authority). the master of a merchant ship. The MERWARN NBC
DELTA: Date-time Group of detonation (GMT). CDM will be issued as required via the MERCOMMS and
FOXTROT: Location of attack (latitude and longitude, or will be valid as specified. In the event of changes in the
geographical place name) and qualifier (two meteorological conditions, the MERWARN NBC CDM
digits as follows: AA=Actual Location, will be updated as required.
EE=Estimated Location). The following standard format will be used:
PAPAB: Effective wind speed (three digits and unit of
measurement), downwind distance of Zone 1 ALFA: Message identifier (MERWARN NBC CDM),
(three digits and unit of measurement), cloud date-time group (GMT) from which valid 6
radius (two digits and unit of measurement), hours ahead.
left and right radial line of the predicted BRAVO: Specified sea area for which valid.
fallout hazard area (three digits and unit of CHARLIE: Representative downwind direction (degrees,
measurement each). 3 digits) and representative downwind speed
(knots, 3 digits).
Example: DELTA: Maximum downwind hazard distance
(nautical miles, 3 digits).
MERWARN NBC 3 NUC
8 - 10
ECHO: Additional information. indicating areas affected and expected movement of the
hazard.
Example:
Example 1:
ALFA MERWARN NBC CDM 180600ZSEP1999//
MERWARN NBC 3 CHEM
BRAVO BALTIC SEA WEST OF 15°00′E//
CHARLIE 045/020// ALFA/DA/NBCC-4/003/C//
DELTA 010// DELTA/020300ZSEP1999//
GENTEXT/PERSISTENT NERVE AGENT VAPOR
ECHO NIL//
HAZARD EXISTS FROM NORFOLK TO HATTERAS
AT 020300Z SEP 1999 AND IS SPREADING
830L. MERWARN NBC 3 CHEM SOUTH-EASTWARDS AT 017 KNOTS. SEA AREA
OUT TO 100 NAUTICAL MILES FROM COAST
This message is issued to pass immediate warning of a LIKELY TO BE AFFECTED BY 020600ZSEP1999//
predicted chemical contamination and hazard area.
MERWARN NBC 3 CHEM reports are issued as soon as Example 2:
possible after each attack. They contain sufficient
information to enable the master of a ship to plot the MERWARN NBC 3 CHEM
downwind hazard area.
ALFA/DA/NBCC-3/003/C//
The following standard format will be used for DELTA/020300ZSEP1999//
MERWARN NBC 3 CHEM: GENTEXT/PERSISTENT NERVE AGENT VAPOR
HAZARD AT 020600Z SEP 99 IS ESTIMATED TO BE
MERWARN NBC 3 CHEM (Message identifier) OCCURRING OVER MOST OF THE SEA AREAS OUT
TO 40 MILES EAST OF THE COAST LINE FROM
ALFA: Strike Serial Number (as defined by the naval NORFOLK TO HATTERAS. HAZARD IS EXPECTED
authority). TO HAVE DISPERSED BY 021000Z SEP1999//
DELTA: Date-time group (Z) of start and end of attack. 830M. MERWARN DIVERSION ORDER
FOXTROT: Location of event.
GOLF: Delivery Means. In addition to the origination of MERWARN NBC EDM
INDIA: Release Information. and MERWARN NBC 3 NUC messages, naval authorities
may, if circumstances dictate, broadcast general diversion
PAPAA: Predicted attack and hazard area. orders, based upon the fallout threat, whereby merchant
ships proceeding independently will be passed evasive
NOTE: If representative downwind speed is 5 knots or less, routing instructions of a more general nature, using the
or variable, this letter item will consist of three (3) digits standard NCS identifier MERWARN DIVERSION
instead of coordinates, representing the radius of a circle in ORDER.
nautical miles centred on the location of the attack Example:
contained in set FOXTROT. A. MERWARN DIVERSION ORDER
B. English Channel closed. All shipping in North Sea
YANKEE: The representative downwind direction and remain north of 052 degrees N until 031500ZSEP1999.
speed.
ZULU: Information on actual weather conditions. 830N. Other Warnings
GENTEXT: Remarks.
ATP-2, Vol II, gives instructions for the display of
signals by ships which have received a MERWARN NBC 3
NOTE: Some of the letter items above may not be NUC message which affects their area. Ships arriving from
completed in the report that is received, but there will be sea but remaining beyond visual/aural range of shore
sufficient information for a Downwind Hazard plot to be stations should continue to keep radio watch in order to
carried out. receive MERWARN messages.
The MERWARN NBC 3 CHEM standard format may 830O. Ground Zero
not be suitable after a multiple chemical attack, which
produces a hazard from several attacks or depositions in a The point at the surface on sea or land immediately
large or complex target area. In such cases warnings will below or above a nuclear explosion is called Ground Zero
be plain language statements of a more general nature, (GZ).
8 - 11
830P. Effective Downwind Direction and – Plotting from MERWARN NBC 3 NUC: Use the cloud
Downwind Speed radius given in the MERWARN NBC 3 NUC and, in all
cases, a safety distance of 15 nautical miles.
Winds in the atmosphere vary considerably with height, Plotting should be performed in the following manner:
both in direction and speed, and have a major influence on – Plot the location of the detonation (ground zero) on the
the distribution of radioactive fallout from a nuclear cloud. chart. Look up the fourth and fifth field of set PAPAB
The worst contamination will fall to the surface along a (left and right radial line of the fallout area) and calculate
path represented by the average wind between the surface the bisector. This line is the equivalent to the downwind
and the middle of the nuclear cloud. direction. Draw a downwind axis from GZ in the
Based upon meteorological information on the wind downwind direction, as calculated above. Draw two
conditions in the airspace between the surface and the additional downwind radial lines from GZ, 20˚ to either
height of the nuclear cloud, NBC Collection Centers will side of the downwind axis.
compute the average direction and speed of the radioactive – Using GZ as center and the downwind distance of Zone
particles’ path from the nuclear cloud to the surface. 1 (second field of set PAPAB) as radius, draw an arc
The results of this computation make up the fallout between the two radial lines on each side of the
prediction, expressed in the terms of effective downwind downwind axis. Draw a second arc between the radial
direction and speed. It should be noted that the direction of lines to represent Zone 2, doubling the downwind
the effective downwind is the direction towards which the distance for radius.
wind blows. This direction is also known as the fallout – Using GZ as center, draw a semicircle upwind (opposite
axis. the downwind axis and radials) using the cloud radius
The surface wind will usually be considerably different (third field of set PAPAB).
from the effective downwind, both in direction and speed, – From the intersections of the Zone 1 arc with the two
and the surface wind should never be used to estimate the radial lines, draw straight lines to the ends of the cloud
drift of fallout. radius semicircle.
– To determine the area in which fallout deposition is
830Q. Fallout Pattern Criteria predicted to occur at any given time after the detonation:
– Multiply the effective downwind speed (first field of set
The predicted fallout area consists of two zones, Zone 1 PAPAB) by the time after the burst (in hours), the result
and Zone 2, with the following characteristics: being a distance in nautical miles.
– Zone 1 is the zone of immediate concern. Within this – To and from this distance add and subtract a safety
zone there will be areas where exposed, unprotected distance of 15 nautical miles to allow for finite cloud
personnel may receive doses of 150 cGy (rads) or size, diffusion, and wind fluctuations. The result will be
greater, within 4 hours. Casualties among personnel may two distances.
occur within portions of this zone. – With GZ as center and the two safety distances obtained
– Zone 2 is the zone of secondary hazard. Within this zone above as radii, draw arcs across the plotted fallout area.
the total dose received by exposed, unprotected – The area enclosed between the two arcs will contain, in
personnel is not expected to reach 150 cGy (rads) within most cases, the area of deposition of fallout at this
a period of 4 hours after the actual arrival of fallout, not particular time after the burst.
even when the radioactive fallout remains on the deck of
the ship. 830S. Plotting from MERWARN NBC 3 NUC
Outside these two zones the risk will be negligible.
Example:
830R. Fallout Plotting in Merchant Ships
Given:
When a nuclear explosion is reported in a MERWARN MERWARN NBC 3 NUC
NBC 3 NUC message, the Master of a merchant ship
should immediately plot the fallout area on a chart, using ALFA/UK/NBCC/09-001/N//
the information contained in the message. A plot example DELTA/091715ZSEP1999//
accompanies the next section. FOXTROT/PLYMOUTH/AA//
When a MERWARN NBC 3 NUC is not available (for PAPAB/018KTS/040NM/05NM/275DGT/315DGT//
example, when a nuclear detonation is observed from the
ship) the data contained in the current MERWARN NBC Problem: Determine the predicted fallout area and the
EDM should be used. The plotting procedures are almost area within which fallout is predicted to deposit at the
identical in the two cases. surface at 091845ZSEP1999.
For purposes of simplification, merchant ships are to use Solution (See figure.):
cloud radii and safety distance as follows: – On the chart plot GZ. Calculate the downwind direction
– Plotting from MERWARN NBC EDM: Use cloud radius 295 degrees as bisector from left and right radial line
10 nautical miles and safety distance 15 nautical miles in (from set PAPAB, fourth and fifth field). Draw a
all cases. downwind axis from GZ on a bearing of 295˚ for a
8 - 12
distance of 80 nautical miles. Draw two radial lines from 27 + 15 = 42 nautical miles, and 27 - 15 = 12 nautical
GZ, bearing 275˚ and 315˚, both 80 nautical miles long. miles.
(80 is twice the downwind distance of Zone 1.) – With GZ as center and 42 and 12 nautical miles as radii,
– Using GZ as center, draw arcs between the radial lines at draw arcs across the fallout pattern. The area enclosed by
40 nautical miles downwind to mark Zone 1, and at 80 the two arcs and the boundary of the pattern is the area
nautical miles downwind to mark Zone 2. within which fallout is predicted to deposit at the surface
– From the third field of set PAPAB, the cloud radius is 5 at 091845ZSEP1999.
nautical miles. With GZ as center and 5 nautical miles as
radius, draw the cloud radius semicircle upwind of GZ. 830T. Contamination Plotting in Merchant Ships
– From the intersections of the Zone 1 arc with the radial
lines, draw straight lines to the ends of the cloud radius When a chemical attack is reported in a MERWARN
semicircle. NBC 3 CHEM message, the following procedure should be
– 091845Z is 1.5 hours after the burst. From the first field followed:
of set PAPAB, obtain the effective downwind speed; 18 – Plot the location of the attack from the details in set
knots: FOXTROT.
18 kts x 1.5 hr = 27 nautical miles. – Plot the coordinates or radius of the circle contained in
The safety distance is always 15 nautical miles. set PAPAA.
8 - 13
8 - 14
APPENDIX A
INSTRUCTION TO MASTERS IN AN EMERGENCY ON DEFENSE AGAINST NUCLEAR FALLOUT
Attacks with nuclear weapons may be expected on land prevent contamination settling. If complete coverage is
targets adjacent to your route. Such attacks are likely to impossible, concentrate effort on the navigating position,
result in radioactive fallout being deposited over large over the top of the shelter position(s), and above the
areas of sea, through which you may have to pass. It may machinery spaces.
be possible to issue a general warning to indicate which – If a continual spraying of the upper works is
areas are likely to be dangerous at any particular time. impracticable, organize working parties at frequent
As fallout will probably be in the form of fine dust which intervals to wash down the weather decks and
may be invisible, you should observe the following superstructure to reduce the buildup of contamination.
precautions during nuclear fallout. – Reduce the number of your crew who must remain on
If your ship is equipped with the necessary instruments the weather decks or in positions near the weather decks,
to detect fallout, these precautions may be relaxed or in machinery spaces, to the bare minimum required
accordingly. for safe steaming, and keep the remainder in the selected
PRECAUTIONS TO BE TAKEN: If your ship has a shelter position(s).
prearranged radioactive countermeasure plan prepared, – Ensure that all who must remain in exposed positions
ensure that all measures laid down in that plan are carried (including machinery spaces, unless ventilation can be
out. If no such plan is in existence, improvise measures as stopped) are fully clothed, preferably in foul weather
indicated below: clothing, with all the skin covered so far as practicable.
– Select a group, or groups, of compartments as low in the – During the passage, so far as the numbers of
ship and as far removed from the ship’s side as possible appropriately skilled personnel allow, change around
within which the crew can take shelter. These spaces those manning exposed or relatively unsheltered
should be equipped with washing and lavatory facilities, positions (including the machinery spaces) as often as
and sufficient food should be stowed there to last for the possible in order to spread the radiation dosage.
passage through the dangerous area. Spaces selected Remember that this advice also applies to the Master,
should be capable of being completely shut down with who should take as much shelter as the safe navigation of
all ventilation and other openings secured. the ship will permit.
– Strike below or cover as much gear on the weather decks – Ensure that all who have been exposed remove at least
as possible, particularly absorbent materials such as line, their outer clothing on returning to shelter, wash
awnings, etc. Ensure that food stores and galleys are thoroughly their exposed skin (especially hands, face,
secured with all openings closed. Stop all ventilation and neck) as soon as possible, and in any case before
fans and close or cover all ventilation and other openings drinking or eating.
which are not essential for running machinery and – Restrict unnecessary movement throughout the ship to
continued steaming. In the absence of suitable closures, minimize the possible spread of contamination.
the use of canvas covers, adhesive tape, etc., is – Unless absolutely necessary, do not distill water for
recommended. drinking while in a dangerous area.
– Rig all available fire-fighting and deck washing hoses – As soon as possible after clearing a dangerous area, carry
and nozzles to spray water continuously over as much of out a thorough hosing down of the all weather decks and
the weather decks and superstructure as possible, to superstructure.
8 - 15
INDEX I
RADIO AIDS TO NAVIGATION BY COUNTRY
A E
Acores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3456.2 Ecuador . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2051, 3646
Albania . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3498.1 Egypt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5220
Algeria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3550, 5010 Egypt - Mediterranean . . . . . . . . . . . . . . . . . . . . . . . . . . . 3537
American Samoa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3948 Egypt - Red Sea. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.2
Angola. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3629 Estonia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3334
Antarctica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3209
Argentina. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2080, 3182, 5020 F
Australia . . . . . . . . . . . . . . . . . . . . . . . 1665, 2600, 3876, 5030
Faroe Islands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3215
B Fiji . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3945
Fiji Islands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5245
Bahrain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3716, 5050 Finland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3314, 5250
Bangladesh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3731, 5060 France . . . . . . . . . . . . . . . . . . . . . . . . . 1182, 1273, 2380, 5260
Barbados . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5070 France - Channel and Atlantic . . . . . . . . . . . . . . . . . . . . . 3421
Belarus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2150 France - Mediterranean . . . . . . . . . . . . . . . . . . . . . . . . . . . 3471
Belgium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3378, 5080 French Polynesia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3943
Benin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3610, 5090
Bermuda . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3135, 5100 G
Bjornoya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3216
Brazil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2050.5, 3150 Gambia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5290
Bulgaria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187.61, 3510 Georgia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3519
Burma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5101 Germany . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1205, 2320, 5300
Burma (Myanmar). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3733 Germany - North Sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3370
Ghana . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3605, 5320
C Greece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3500, 5330
Greenland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3001.5, 5340
Cameroon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3620, 5110 Guadeloupe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5350
Canada. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001, 2020, 5120 Guam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3913
Canada - Arctic and Atlantic. . . . . . . . . . . . . . . . . . . . . . . 3017 Guinea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3590, 5360
Canada - Pacific . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3671 Guyana . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5370
Channel Islands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3410
Chile . . . . . . . . . . . . . . . . . . . . . . . . . 1895, 2445, 3645.4, 5130 H
China . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2485.1, 3740, 5140
Colombia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1850 Hong Kong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5380
Comoros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5141 Hong Kong (China). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3739
Congo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5150
Congo (Brazzaville) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3630 I
Costa Rica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5160
Cote D'Ivoire (Ivory Coast) . . . . . . . . . . . . . . . . . . . . . . . 3600 Iceland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3212
Croatia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3499, 5165 India . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2476, 3722, 5390
Cuba . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3119, 5170 Indonesia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2633, 5400
Cyprus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3509, 5180 Indonesia - Irian Jaya . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3840
Czech Republic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2091 Indonesia - Java. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3820
Indonesia - Moluccas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3836
D Indonesia - Sulawesi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3830
Indonesia - Sumatera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3816
Denmark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3359, 5190 Iran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3715
Djibouti . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5200 Iraq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5410
Dominican Republic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5210 Ireland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3405, 5420
Islas Baleares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3464
Islas Canarias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3579
I-1
INDEX I
Israel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3534, 5430 P

Italy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2410, 3475, 5440
Ivory Coast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5450 Pakistan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1188, 3720, 5640
Panama . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5650
J Papua New Guinea . . . . . . . . . . . . . . . . . . . . . . . . . 3866, 5660
Peru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2461, 3646.1, 5665
Jamaica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3135.5, 5460 Philippines. . . . . . . . . . . . . . . . . . . . . . . . . . . 2530, 3792, 5670
Jan Mayen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3214 Poland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200, 3336, 5680
Japan . . . . . . . . . . . . . . . . . . . . . . . . . . 1530, 2500, 3753, 5470 Portugal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1295, 3441, 5690
Puerto Rico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3138
K
Q
Kenya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5480
Kyrgyzstan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2211 Qatar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.9
L R
Latvia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1198, 3333, 5485 Republic of Korea . . . . . . . . . . . . . . . . . . . . . 1520, 2505, 3742
Libya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3538 Reunion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3711
Lithuania . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1199, 3332 Reunion Island . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5710
Romania . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3512
M Russia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1190, 2202, 5705
Russia - Baltic Coast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3325
Madagascar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5500 Russia - Black Sea. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3520
Malaysia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5510 Russia - Caspian Sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3522
Malaysia - Peninsular . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3734 Russia - Northern Coasts. . . . . . . . . . . . . . . . . . . . . . . . . . 3224
Malaysia - Sabah. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3803 Russia - Pacific . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3748
Malaysia - Sarawak. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3805
Malta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3498.05, 5520 S
Martinique. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3140, 5540
Mauritania . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3583 Saudi Arabia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5730
Mauritius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3710, 5541 Saudi Arabia - Persian Gulf . . . . . . . . . . . . . . . . . . . . . . 3714.2
Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2040, 3118 Saudi Arabia - Red Sea . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.6
Monaco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3474, 5542 Senegal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3584, 5740
Morocco . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1320, 3560, 5550 Serbia and Montenegro . . . . . . . . . . . . . . . . . . . 3499.5, 5740.5
Seychelles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5741
N Sierra Leone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5750
Singapore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3735, 5755
Namibia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3627, 5560 Slovenia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5760
Nauru. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5565 South Africa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3641, 5770
Netherland Antilles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5580 Spain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1300, 5790
Netherlands . . . . . . . . . . . . . . . . . . . . . . . . . . 1218, 3375, 5570 Spain - North Coast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430
Netherlands Antilles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3145 Spain - South and Mediterranean . . . . . . . . . . . . . . . . . . . 3458
New Caledonia . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3940, 5590 Sri Lanka . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2480, 3730, 5800
New Zealand . . . . . . . . . . . . . . . . . . . . . . . . . 1625, 3904, 5600 St. Helena . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5720
Nigeria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3615, 5610 St. Pierre and Miquelon . . . . . . . . . . . . . . . . . . . . . 3050, 5725
Norway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1204, 3242, 5620 Suriname . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5810
Svalbard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3218, 5820.5
O Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203, 3288, 5820
Switzerland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2400, 5821
Oman. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.8, 5630
T
Tahiti . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5822
I-2
INDEX I
Taiwan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2635, 3785 United States - Hawaii . . . . . . . . . . . . . . . . . . . . . . . . . . . 3703

Thailand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1480, 3736 United States - Pacific. . . . . . . . . . . . . . . . . . . . . . . . . . . 3646.5
Togo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5824 United States and Canada - Lakes. . . . . . . . . . . . . . . . . . . 3068
Tonga . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3949, 5823 Uruguay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3168, 5866
Trinidad and Tobago. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3143 Uzbekistan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2212
Tunisia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3540, 5840
Turkey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3528.1 V
U Venezuela . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2043
Vietnam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3737, 5868
Ukraine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1305, 3514, 5845
United Kingdom . . . . . . . . . . . . 1055, 1237, 2351, 3390, 5850 Y
United States . . . . . . . . . . . . . . . 1720, 2000, 5860, 5861, 5862
United States - Alaska. . . . . . . . . . . . . . . . . . . . . . . . . . . 3692.5 Yemen Aden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5780
United States - Atlantic and Gulf . . . . . . . . . . . . . . . . . . . 3083
I-3
INDEX II
RADIO AIDS TO NAVIGATION BY STATION
A BBC-Radio 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2363
BBC-World Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2370
Aasiaat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3015 Bec de L'Aigle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.2
Aberdeen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3390 Beg Melen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.2
Abidjan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3600 Beg-Meil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.1
Adelaide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3885 Belawan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3817
Agadir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3570 Belem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3150
Alexandria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3537 Belem Radio Liberal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3151
Alger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3552 Belem Radio Marajoara . . . . . . . . . . . . . . . . . . . . . . . . . . 3152
Alicante . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459 Belfast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3404.5
Alistro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187.4 Bergen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3252
Almeria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.65 Bermuda Harbor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3135
Amboina . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3836 Berry Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1065
Ammassalik. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3002 Berwick Bay, LA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1730
Ancona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3477.5 Bilbao . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.2
Annaba . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3550 Bisan Seto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1550
Antalya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3528.1 Bitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3832
Antofagasta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3645.75 Bjornoya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3216
Antwerpen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3378 Bodo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3244
Arkhangel'sk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2209, 3226 Bombay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3722.05
Arrecife . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3579 Bombay Naval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3722
Astoria, OR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3665 Boniface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1066
Astrakhan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3522 Boston, MA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3086
Athens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3504 Botlek . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1231
Atlantic City, NJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3090.7 Boulogne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.4
Auckland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1625 Brehat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.6
Augusta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3477.2 Bremen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3370
Ault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.5 Brignogan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.75
Aveiro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1295 Brixham. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3400.2
Brougham . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.37
B Buenos Aires . . . . . . . . . . . . . . . . . . . . . . . . . 2080, 2081, 3182
Buffalo, NY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3076
Bagur. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3462.5 Busan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1520, 3746
Bahia Blanca . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3192 Bushehr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3715.1
Bahrain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3716
Baltimore, MD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3092 C
Bandar Abbas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3715.2
Bandar Khomeyni . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3715 Cabo de Gata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.7
Bangkok . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3736 Cabo de la Nao . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.35
Banks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.36 Cabo Ortegal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.6
Bar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3499.5 Cabo Penas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.8
Barcelona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.55 Cadiz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3458
Barfleur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.1 Cagliari . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3476
Bari . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3495 Cairns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3876
Barra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1055 Calcutta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3728.3
Barry Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.6 Callao . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3646.1
Base Prat, Greenwich Island (South Shetland Islands). . 3645.8 Caloocan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3792.5
Batumi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3519 Calvert Island . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.65
Batz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.7 Cambria, CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3646.6
Bawdsey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1060 Cap Bear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1185.6
BBC-Radio 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2360 Cap Camarat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.5
BBC-Radio 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2361 Cap Cepet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.3
BBC-Radio 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2362 Cap Corse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.9
I- 5
INDEX II
Cap Couronne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186 Cumshewa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.7

Cap de la Chevre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.95 Curacao . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3145
Cap du Dramont . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.6 Cyprus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3509
Cap Ferrat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.8
Cap Ferret . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.8 D
Cap Leucate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1185.7
Cap-aux-Meules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001 Da Nang . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3737.5
Cape Croker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.38 Daet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3802
Cape Hatteras, NC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3099 Dakar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3584
Cape Naval (NAVCOMCEN Cape) . . . . . . . . . . . . . . . . 3645.1 Dalian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3740.3
Cape Town . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3644 Dammam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3714.2
Cartagena . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3462 Danish Radio (Kalundborg) . . . . . . . . . . . . . . . . . . . . . . . 3362
Carteret . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.3 Darlowo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1201
Casablanca . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1320, 3572 Darwin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3900
Casey. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3209 Davao . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3799
Castellon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.4 Delfzijl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1218.5
Centro Meteorologico Antartico Vcom. Marambio . . . . . 3210 Den Helder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1219
Centro Meteorologico Presidente Eduardo Frei, King George Detroit, MI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3077
Island (South Shetland Islands). . . . . . . . . . . . . . . . . . . 3645.77 Deutschlandfunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3373
Cerrito . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3170 Dickson . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3232
Chah Bahar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3715.3 Die Elbe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1205
Chapultepec. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2040 Die Ems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1217
Charleston, SC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3100 Die Jade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1216
Charleville. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3901 Die Weser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1215
Chassiron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.65 Dieppe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.6
Cheju . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3742.5 Doha . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.9
Chemoulin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.5 Dordrecht . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1226
Chesapeake, VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3096 Douala . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3620
Chi-lung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3785 Dover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3397.1
Chincoteague, VA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3093 Dublin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3405
Chipiona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.3 Dubrovnik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3499.05
Chittagong. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3731 Dumai . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3816
Chukpyon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3746.5 Dundas Island . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.75
Chung-Li . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2635 Dunkerque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1182.3, 1273
Cienfuegos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3121 Dunnet Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1075
Civitavecchia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3482 Durban. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3643
Clyde . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3402 Durres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3498.1
Cobourg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.4
Cochin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3728 E
Colombo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2480, 3730
Colonia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3177 Easington. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1080
Comodoro Rivadavia . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3196 East London . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3645
Comox, B.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3672 East Prawle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1082
Compass Head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1070 Eemshaven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1218
Conakry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3590 Etel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.15, 3423.5
Constanta. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3512
Corpus Christi, TX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3116 F
Corse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3473
Corsen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1287, 3423 Fairlight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1086
Coruna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3434 Falmouth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3400.3
Cotonou. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3610 Faro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3445
Crosslaw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1072 Farsund . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3256
Crotone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3493 Fecamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.7
Cullercoats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1073, 3392 Fedje . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1204
I-6
INDEX II
Fife Ness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1087 Ho Chi Minh Ville . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3738

Finisterre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3433 Hobart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3884
Flamborough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1088 Hoek van Holland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1230
Floro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3251 Holyhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3400.6
Fort Collins, CO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 Homet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.2
Fort de France . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3140 Hong Kong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3739
Fort Macon, NC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3099.5 Honolulu, HI . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3703, 3703.5
Forth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3391 Horta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3456.3
Fortune Head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001.3 Houston-Galveston, TX . . . . . . . . . . . . . . . . . . . . . . . . . . 1740
France Inter (Allouis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2380 Hua-lien. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3787
Frunze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2211 Humber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3394
Fuerteventura . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3579.5 Humboldt Bay, CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3661
Fuzhou. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3740.4
I
G
Ibiza. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3465
Galveston, TX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3112 Icelandic State Broadcasting Service . . . . . . . . . . . . . . . 3212.5
Genova . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3478 Ijmuiden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1220
Gijon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.9 Ile Rousse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187
Gladstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3876.5 Iloilo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3801
Goa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3726 Inchon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3742
Gomera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3581.3 Inuvik, N.W.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3018
Gorky . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2203 Inverbervie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1093
Goteborg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203 Iqaluit, N.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3017
Grand Haven, MI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3078 Iraklion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3502
Gravesend Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1254 Irkutsk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2205, 2205.5
Great Ormes Head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1089 Ishigaki . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3769
Greenland Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3003 Isla de Pascua (Easter Island) . . . . . . . . . . . . . . . . . . . . 3645.76
Gris-Nez . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182, 1274, 3421 Ismailia (Serapeum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.4
Grosses-Roches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001.35 Istanbul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3533
Grove Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1090 Izmir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3529
Guam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3913
Guangzhou . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3740 J
Guayaquil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2051
Guayaquil Naval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3646 Jakarta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2633, 3820
Guernsey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1090.5 Jamaica Coast Guard. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3135.5
Jan Mayen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3214
H Jayapura . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3840
Jersey. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1093.5, 3410
Habana . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3131 Jiddah . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.6
Hai Phong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3737 Jobourg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.1, 3421.5
Haifa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3534 Juncao . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3166
Halifax, N.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3045 Juneau, AK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3692.5
Hamburg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1210
Hartel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1232 K
Hartland. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1091
Hartlepool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1091.2 Kagoshima . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3767
Harwich. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1262 Kaliningrad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3325
Havre St.-Pierre. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001.45 Kandla . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3723
Hellas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3507 Kangnung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3745
Hellenic Radio-Television . . . . . . . . . . . . . . . . . . . . . . . . 3506 Kanmon Kaikyo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1540
Hengistbury Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1092 Kao-Hsiung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3790
Hierro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3581.6 Karachi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1188, 3720
Hiroshima . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3766 Karachi Naval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3721
I- 7
INDEX II
Kekaha, Kauai, HI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2001 Limnos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3508

Kerch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3517.5 Liverpool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1270, 3400.7
Kerkira . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3500 Livorno . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3480
Key West, FL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3106 Lizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1095
Khabarovsk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2206 Llandilo, Penrith . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2601
Kholmsk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3750 Long Beach, CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3646.5
Kiev. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3518 Long Island Sound, CT . . . . . . . . . . . . . . . . . . . . . . . . . . 3088.5
Kilchiaran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094 LOOP Deepwater Port (Louisiana Offshore Oil Port) . . . 1735
Klaipeda . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1199, 3332 Lowestoft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1095.5
Klemtu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.8 Luanda. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3629
Kobe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3764 Lucena . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3796
Kochi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3772.2 Luderitz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3627
Kodiak, AK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3695 Lyngby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3359
Kolobrzeg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1202
Kunsan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3744 M
Kushiro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1570, 3753
Maasboulevard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1234
L Machichaco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3436
Madras. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3728.2
L'Espiguette. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1185.9 Magadan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3751
La Chiappa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187.3 Magallanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3645.7
La Garde . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1185.5, 3471 Mahina . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3943
La Garoupe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.7 Mainflingen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2320
La Gironde . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1290 Maizuru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3773
La Goulette Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3540 Makasar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3830
La Guardia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430 Malaga. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.6
La Hague . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.25 Malin Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3406
La Heve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.8 Malolos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3793
La Loire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1288 Malta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3498.05
La Palma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3581.9 Mandaluyong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3795.5
La Paloma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3168 Mangalore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3727
La Parata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187.1 Manila . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2530, 3795
La Seine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1280 Mar del Plata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3184
Labrador, Labr. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3019.5 Mariupol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3517
Lac D'aigle (Sept Iles). . . . . . . . . . . . . . . . . . . . . . . . . . . 1001.6 Mariupol (Zhdanov) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1315
Laem Chabang . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1480 Mauritius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3710
Lagos. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3615 Mayport, FL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3102
Lampedusa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3490 Mazara del Vallo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3489
Lands End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094.1 Medway. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1250
Langdon Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094.2 Melbourne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3883
Laoag. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3797 Menorca . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3464.5
Las Palmas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3580 Messanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.82
Law Hill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094.5 Messina . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3486
Le Grouin (Cancale) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.45 Miami, FL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3104
Le Havre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1275 Milford Haven. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3400.5
Le Roc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.35 Milwaukee, WI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3079
Le Stiff (Ile d'Ouessant) . . . . . . . . . . . . . . . . . . . . . . . . . 1183.8 Miri . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3805
Le Talut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.4 Mobile, AL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3111
Leba. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200 Moji. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3772.4
Leixoes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3441 Mokpo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3743
Lerwick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1237 Mollendo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3646.3
Les Baleines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.6 Molodechno . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2150
Les Escoumins, Que.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3038 Monaco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3474
Liblice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2091 Monsanto. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3444
I-8
INDEX II
Montevideo Trouville . . . . . . . . . . . . . . . . . . . . . . . . . . . 3176.1 Osaka. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1530

Mont-Louis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001.85 Otago Harbour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1630
Montmagny . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001.9 Otaru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3775
Montreal, Que. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3036 Ottawa, Ont . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2020
Moriches, NY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3088.6
Moskva . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2202, 2202.5 P
Mount Gil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.85
Mount Hays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.9 Pago Pago . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3948
Murmansk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1196, 3224 Paita. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3646.2
Muscat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.8 Palembang . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3819
Palermo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3487
N Palma. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3464
Palmer Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3211
Naden Harbor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.95 Pasajes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.3
Nagoya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1555, 3760 Penmarc'h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.05
Naha . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3777 Penta Comstat, Firefly. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3877
Nakhodka . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1194 Perth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3886
Napoli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3484 Pertusato . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187.2
Natashquan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001.95 Peru National Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2461
Navia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.5 Petropavlovsk-Kamchatskiy . . . . . . . . . . . . . . . . . . . . . . 3749.5
Netherlands Coast Guard . . . . . . . . . . . . . . . . . . . . . . . . . 3375 Pevek . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3235
New Delhi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2476 Pinang . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3734
New Orleans, LA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3108 Piriac . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.45
New York, NY . . . . . . . . . . . . . . . . . . . . . . . . . . .1720, 3088.7 Placentia, Nfld. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3027.5
Newhaven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1096 Ploumanach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.65
Newport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002 Point Reyes, CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3657
Newton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1097 Pointe au Baril. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.45
Niigata. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3772.8 Pointe de Grave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.75
Niton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3398 Pointe du Raz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184
North Bend, OR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3664 Pointe Heath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.1
North Foreland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1098 Pointe Noire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3630
North Post . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3143 Polo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3792
Northwood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3395 Ponta Delgada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3456.2
Nos Galata Lt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187.61 Ponta do Ceu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3153
Noss Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1098.2 Porquerolles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1186.4
Nouadhibou. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3583 Port Angeles, WA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3667
Noumea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3940 Port aux Basques, Nfld.. . . . . . . . . . . . . . . . . . . . . . . . . . . 3021
Novorossiysk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1192, 3520 Port Blair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3729
Novosibirsk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2204 Port Dampier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1675
Nueva Palmira. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3178 Port Elizabeth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3641
Nukualofa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3949 Port Harcourt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3617
Nuuk (Kook Island) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3005 Port Hedland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1665, 3892
Port Louis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3710.5
O Port Moresby. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3866
Port-en-Bessin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183
Observatorio Naval Caracas . . . . . . . . . . . . . . . . . . . . . . . 2043 Portland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3400
Odessa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1305, 3514 Portland, ME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3084
Offenbach/Pinneberg . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3371 Portland, OR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3666
Okhotsk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3751.5 Portnaguran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1098.3
Olinda . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3157 Porto Cervo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3477.3
Oostende . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3380 Porto Santo, Madeira. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3456
Oran. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3554 Porto Torres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3477.4
Orlandet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3248 Portpatrick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3401
Orlock Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1098.5 Prangins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2400
I- 9
INDEX II
Prescott, Ont.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3069 Sagro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1187.5

Primera Angostura . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1900 Saint John, N.B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3047
Prince Rupert, B.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3677 Saint-Cast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.5
Prince William Sound, AK . . . . . . . . . . . . . . . . . . . . . . . . 1770 Saint-Julien . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.3
Puerto Covenas, Floating Storage Unit. . . . . . . . . . . . . . . 1850 Saint-Mathieu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.85
Puerto Madryn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3193 Saint-Sauveur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.55
Puerto Montt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3645.4 Saint-Vaast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.05
Puerto Princesa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3798 Samsun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3531
Puget Sound, WA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1760 San Benedetto del Tronto . . . . . . . . . . . . . . . . . . . . . . . . . 3496
Punta Carretas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3169.5 San Francisco, CA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1750
Punta del Este . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3169 San Juan, PR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3138
Pyonsan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3744.5 Sandakan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3803
Sankt-Peterburg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1190
Q Santander. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.4
Santiago de Cuba . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3119
Qaqortoq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3001.5 Sanwa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500, 2501
Quebec, Que.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3032 Sanya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3740.1
Quequen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3191 Sarnia, Ont. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3070
Quseir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3713.2 Sasebo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3772.5
Sault St. Marie, MI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3074
R Savannah, GA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3101
Scheveningen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1225
Radio Australia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2600 Seattle, WA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3668
Radio Finland (Yleisradio) . . . . . . . . . . . . . . . . . . . . . . . . 3315 Selsey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1115
Radio Nacional de Macapa . . . . . . . . . . . . . . . . . . . . . . . . 3154 Sete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1185.8
Radio Victoria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2462 Sevastopol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3516
Rame Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1105 Shanghai . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2485.1, 3741
Rangoon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3733 Shetland. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3404.1
Ratnagiri . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3725 Shiogama. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3754
Ravenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3477.6 Shoeburyness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1116
Recalada Rio de la Plata . . . . . . . . . . . . . . . . . . . . . . . . . . 3186 Singapore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3735
Reunion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3711 Skegness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1117
Reykjavik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3212 Slupsk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3337
Rhiw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1105.2 Snaefell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1120
Riga . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3333 Socoa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1184.85
Rijeka . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3499.1 Solent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3397.2
Rio de Janeiro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2050.5 Southampton Vessel Traffic Services Centre . . . . . . . . . . 1265
Rio de Janeiro Naval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3161 Southwest Harbor, ME . . . . . . . . . . . . . . . . . . . . . . . . . . . 3083
Rio Gallegos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3204 Split . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3499
Riviere du Loup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.2 St. Ann's Head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1108
Riviere-au-Renard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.15 St. Anthony, Nfld. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3020
Riviere-au-Renard, Que. . . . . . . . . . . . . . . . . . . . . . . . . . . 3040 St. John's, Nfld. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3023
Roches-Douvres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.2 St. Mary's, Isles of Scilly . . . . . . . . . . . . . . . . . . . . . . . . . 1109
Rodel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1106 St. Petersburg, FL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3107.8
Rodhos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3503 St. Pierre Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3050
Rogaland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3254 Stad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1233
Roma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2410, 3475 Stockholm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3288
Rouen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1285 Stornoway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3404
Rugby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2351 Strait of Gibraltar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1300
Sullom Voe Harbour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1240
S Surabaya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3824
Suva. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3945
S. Quay Portrieux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.55 Svalbard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3218
Safi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3574 Swansea. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3400.4
I-10
INDEX II
Sydney. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3882 Valencia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.37

Sydney, N.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3042 Valentia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3408
Valenzuela. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3794
T Valparaiso . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1895
Valparaiso Playa Ancha . . . . . . . . . . . . . . . . . . . . . . . . . 3645.5
Tacubaya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2041 Valparaiso Playa Ancha Radiomaritima . . . . . . . . . . . . . . 2445
Taedok. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2505 Van Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1003
Tai-Chung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3790.5 Vardo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3242
Talcahuano . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3645.6 Varna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3510
Tallinn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3334 Ventspils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1198
Tanabe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3772 Veracruz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3118
Tanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3560 Victoria, B.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3671
Tarifa. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3460 Vigo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3430.1
Tarragona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3459.5 Villerville . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1182.9
Tashkent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2212 Vishakhapatnam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3722.1
Taupo Maritime Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 3904 Vishakhapatnam Naval . . . . . . . . . . . . . . . . . . . . . . . . . . 3722.2
Tees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1245 Vladivostok . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3748
Tema . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3605
Tenerife . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3581 W
Thames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3397
Thunder Bay, Ont.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3080 Walney Island . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1170
Tianjin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3740.2 Walvis Bay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3628
Tiree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1150 Wanganui . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1635
Tjome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3258 West Torr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1171
Tobermory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.5 Westport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1640
Tofino, B.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3675 Whitby. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1172
Tokyo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3756 Wiarton, Ont . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3068
Tokyo Wan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1560 Wideford Hill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1175
Torino . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2411 Wiluna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3902
Torshavn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3215 Windyhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1180
Toulinguet (Camaret) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1183.9 Witowo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3336
Trafalgar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.55 Woods Hole, MA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3087
Trevose Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1155 Woolwich Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1255
Trieste . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3498
Trimingham. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1160 X
Tripoli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3538
Tunis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3542 Xian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2490
Turku. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3314
Tuticorin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3728.1 Y
Twillingate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.35
Tynemouth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1165 Yarmouth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3396
Yeosu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3747.5
U Yokohama . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3757
Yuzhnyy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1310
Ullung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3747
Ushuaia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3208 Z
V Zatoka Gdansk VTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3338
Valdez, AK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3696.5
I- 11
CROSS REFERENCE – INTERNATIONAL vs. U.S. RADIO AIDS
Inter. – U.S. – Inter. – U.S. –

2-0001 1055, 1060, 1065, 1066,
1070, 1072, 1073, 1075, 1080,
1082, 1086, 1087, 1088, 1089,
1090, 1091, 1091.2, 1092, 1093,
1094, 1094.1, 1094.2, 1094.5, 1095,
1095.5, 1096, 1097, 1098, 1098.2,
1098.3, 1105, 1105.2, 1106, 1108,
1109, 1115, 1116, 1117, 1120,
1150, 1155, 1160, 1165, 1170,
1172, 1175, 1180
2-0155 1090.5, 1093.5
2-0175 1098.5, 1171
2-0815 1182, 1182.1, 1182.2, 1182.3,
1182.4, 1182.5, 1182.6, 1182.7, 1182.8,
1182.9, 1183, 1183.05, 1183.1, 1183.2,
1183.25, 1183.3, 1183.35, 1183.45, 1183.5,
1183.55, 1183.6, 1183.65, 1183.7, 1183.75,
1183.8, 1183.85, 1183.9, 1183.95, 1184,
1184.05, 1184.1, 1184.15, 1184.2, 1184.3,
1184.4, 1184.45, 1184.5, 1184.55, 1184.6,
1184.65, 1184.75, 1184.8, 1184.82, 1184.85
2-1040 1185.5, 1185.6, 1185.7, 1185.8,
1185.9, 1186, 1186.2, 1186.3, 1186.4,
1186.5, 1186.6, 1186.7, 1186.8, 1186.9,
1187, 1187.1, 1187.2, 1187.3, 1187.4,
1187.5
2-1282 1187.61
2-2147 1188
2-3510 1002.6, 1002.65, 1002.7, 1002.75,
1002.8, 1002.85, 1002.9, 1002.95, 1003
2-4326 1001.3, 1001.35, 1001.45, 1001.6,
1001.85, 1001.9, 1001.95, 1002, 1002.1,
1002.15, 1002.2, 1002.35
I-13

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Radio Time Signals....................................................................................................................................................................2-3

Radio Navigational Warnings....................................................................................................................................................3-3

Distress, Emergency, and Safety Traffic ...................................................................................................................................4-3

Stations Transmitting Medical Advice ......................................................................................................................................5-3

Long Range Navigational Aids..................................................................................................................................................6-3

Communication Instructions For U.S. Merchant Ships ............................................................................................................8-3

Index I—Radio Aids to Navigation by Country ........................................................................................................................ I-1

DISTRESS, SEARCH, AND RESCUE

The National Geospatial-Intelligence Agency’s Maritime Safety Information Website..................................................... V

Telephone: (1) 301-227-3296 or DSN 287-3296

(1) Type of modulation of the main carrier:

A1A Continuous wave telegraphy, Morse code

F1B Narrow band direct printing (NBDP); Radioteletype

TERMS AND ABBREVIATIONS

AOR-E Atlantic Ocean Region-East

PART I RADIO DIRECTION FINDER STATIONS

100A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

PART II RADAR STATIONS

110A. Coast and Port Radar Station List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

PART I RADIO DIRECTION FINDER STATIONS

100A. General SUNRISE, SUNSET, OR NIGHT EFFECTS: Bearings

Radio Bearing Conversion Table

(1) (2) (3) (4) (5) (6) (7) (8)

1001 Cap-aux-Meules. RDF 47 23 14 N MCTS Riviere-au-Renard (VCG).

1001.3 Fortune Head. RDF 47 03 54 N MCTS Placentia (VCP).

1001.35 Grosses-Roches. RDF 48 54 51 N MCTS Les Escoumins (VCF).

1001.45 Havre St.-Pierre. RDF 50 16 15 N MCTS Riviere-au-Renard (VCG).

1001.6 Lac D'aigle (Sept RDF 50 17 21 N MCTS Les Escoumins (VCF).

1001.85 Mont-Louis. RDF 49 12 48 N MCTS Les Escoumins (VCF).

1001.9 Montmagny. RDF 46 55 42 N MCTS Quebec (VCC).

1001.95 Natashquan. RDF 50 08 40 N MCTS Riviere-au-Renard (VCG).

1002 Newport. RDF 48 13 37 N MCTS Riviere-au-Renard (VCG).

1002.1 Pointe Heath. RDF 49 05 05 N MCTS Riviere-au-Renard (VCG).

1002.15 Riviere-au-Renard. RDF 49 00 29 N MCTS Riviere-au-Renard (VCG).

1002.2 Riviere du Loup. RDF 47 45 26 N MCTS Quebec (VCC).

1002.35 Twillingate. RDF 49 41 16 N MCTS St. Anthony (VCM).

1002.36 Banks. RDF 44 28 30 N MCTS Thunder Bay (VBA).

Seasonal operation: April 1-December 31.

1002.37 Brougham. RDF 43 55 13 N MCTS Prescott (VBR).

Seasonal operation: April 1-December 31.

1002.38 Cape Croker. RDF 44 57 30 N MCTS Thunder Bay (VBA).

Seasonal operation: April 1-December 31.

1002.4 Cobourg. RDF 44 04 02 N MCTS Prescott (VBR).

Seasonal operation: April 1-December 31.

1002.45 Pointe au Baril. RDF 45 33 50 N MCTS Thunder Bay (VBA).

Seasonal operation: April 1-December 31.

1002.5 Tobermory. RDF 45 09 42 N MCTS Thunder Bay (VBA).

Seasonal operation: April 1-December 31.

(1) (2) (3) (4) (5) (6) (7) (8)

1002.55 Trafalgar. RDF 43 29 41 N MCTS Prescott (VBR).

Seasonal operation: April 1-December 31.

1002.6 Barry Inlet. RDF 52 34 30 N MCTS Prince Rupert (VAJ).

1002.65 Calvert Island. RDF 51 35 21 N MCTS Prince Rupert (VAJ).

1002.7 Cumshewa. RDF 53 09 33 N MCTS Prince Rupert (VAJ).