Bulk Carrier Surveys

RULES
PUBLICATION NO. 39/P
HULL SURVEYS OF BULK CARRIERS
2001
Publications P (Additional Rule Requirements), issued by Polski Rejestr Statków,

complete or extend the Rules and are mandatory where applicable.
*'$ 6.
RULES
PUBLICATION NO. 39/P
HULL SURVEYS OF BULK CARRIERS
2001
*'$ 6.
PRS Publication No. 39/P – Hull Surveys of Bulk Carriers, 2001, based on the IACS
Unified Requirements Z10.2/Rev. 11/ 2000, is an extension of the requirements contained
in Part I – Classification Regulations of the Rules for the Classification and Construction
of Sea-going Ships.
This Publication was approved by the PRS Director General on 15th of June 2001 and
enters into force on 1st of July 2001.
This Publication replaces the PRS Publication No. 39/P – Hull Survey of Bulk Carriers,
1998.
© Copyright by Polski Rejestr Statków, 2001
PRS/HW, 06/2001
CONTENTS
Page
1 General .................................................................................................................................................. 5
2 Annual Survey .................................................................................................................................. 7
3 Intermediate Survey .................................................................................................................... 10
4 Class Renewal Survey ............................................................................................................... 13
5 Preparation for Survey .............................................................................................................. 17
6 Documentation on Board ......................................................................................................... 19
7 Procedures for Thickness Measurements ....................................................................... 20
8 Reporting and Evaluation of Survey ................................................................................. 20
Enclosures
Table I Minimum Requirements for Close-up Surveys at Class Renewal
Surveys of Bulk Carriers ........................................................................................ 21
Table II Minimum Requirements for the Thickness Measurements
at Class Renewal Surveys of Bulk Carriers ................................................. 22
Table III Owner’s Inspection Report ................................................................................... 23
Table IV (Superseded by Annex I)
Table V Procedures for Certification of Firms Engaged in Thickness
Measurements of Hull Structures ...................................................................... 24
Table VI Reporting Principles ................................................................................................. 25
Table VII Executive Hull Summary ....................................................................................... 25
Table VIII Requirements for Extent of Thickness Measurement
at Those Areas of Substantial Corrosion ....................................................... 26
Annex I Guidelines for Technical Assessment in Conjunction
with Planning for Enhanced Surveys of Bulk Carriers .......................... 29
Annex II Recommended Procedures for Thickness Measurements of Bulk
Carriers ............................................................................................................................. 37
Annex III Guidelines for the Gauging of the Vertically Corrugated
Transverse Watertight Bulkhead Between Holds Nos. 1 and 2 ........ 59
Annex IV Ship Type and Enhanced Survey Programme (ESP) Notations ....... 61
Annex V Additional Annual Survey Requirements for the Foremost
Cargo Hold of Ships subject to SOLAS XII/9.1 ....................................... 63
1 GENERAL
1.1 Application
1.1.1 The requirements apply to all self-propelled bulk carriers after construction.
1.1.2 The requirements apply to surveys of hull structure and piping systems in
way of the cargo holds, cofferdams, pipe tunnels, void spaces within the cargo area
and all ballast tanks. The requirements are additional to the classification require-
ments applicable to the remainder of the ship.
1.1.3 The requirements contain the minimum extent of examination, thickness

measurement and tank testing. The survey is to be extended when substantial corro-
sion and/or structural defects are found and include additional close-up survey when
necessary.
1.1.4 Existing ships of 150 m in length and above, intending to carry solid bulk
cargoes having a density of 1,78 t/m3, or above, with single deck , topside tanks and
hopper tanks, fitted with vertically corrugated transverse watertight bulkheads be-
tween cargo holds No 1 and 2 are to comply with requirements described in the Sup-
plement to Part II – Hull of Rules for the Classification and Construction of Sea-
going Ships, and are subject to the additional thickness measurement guidance con-
tained in Annex III not later than at third Class Renewal Surveys.
1.2 Definitions
A b u l k c a r r i e r 1 – a ship which is constructed generally with single deck,
topside tanks and hopper side tanks in cargo spaces, and is intended primarily to
carry dry cargo in bulk. It includes a vessel of such type as ore carriers or combi-
nation carriers.
For combination carriers, additional requirements are specified in Publication
No. 36/P – Hull Surveys of Oil Tankers.
A b a l l a s t t a n k – a tank which is being used primarily for salt water ballast.
A n o v e r a l l s u r v e y – a survey intended to report on the overall condition of
the hull structure and to determine the extent of additional close-up surveys.
A c l o s e - u p s u r v e y – a survey where the details of structural components are
within the close visual inspection range of the Surveyor, i.e. normally within the
reach of hand.
A t r a n s v e r s e s e c t i o n – includes all longitudinal members such as plating,
longitudinals and girders at the deck, side, bottom, inner bottom and hopper side
plating, longitudinal bulkhead and bottom plating in top wing tanks.
1
See Annex IV (page 61)
5
R e p r e s e n t a t i v e s p a c e s – those spaces which are expected to reflect the
condition of other spaces of similar type and service and with similar corrosion
protection systems. When selecting representative spaces account is to be taken of
the service and repair history on board and identifiable critical structural areas
and/or suspect areas.
S p a c e s – separate compartments including holds and tanks.
S u s p e c t a r e a s – locations showing substantial corrosion and/or considered by
the Surveyor to be prone to rapid wastage.
S u b s t a n t i a l c o r r o s i o n – an extent of corrosion such that assessment of
corrosion pattern indicates a wastage in excess of 75% of the allowable margins,
but within the acceptable limits.
C o r r o s i o n p r e v e n t i o n s y s t e m − normally considered either:
1. a full hard coating, or
2. a full hard coating supplemented by anodes.
Protective coating is to usually be epoxy coating or equivalent. Other coating
systems may be considered acceptable as alternatives, provided that they are ap-
plied and maintained in compliance with the manufacturer’s specification.
Where soft coatings have been applied, safe access is to be provided for the sur-
veyor to verify the effectiveness of the coating and to carry out an assessment of
the condition of internal structures which may include spot removal of the coating.
When safe access cannot be provided, the soft coating is to be removed.
C o a t i n g c o n d i t i o n is defined as follows:
G O O D – condition with only minor spot rusting,
F A I R – condition with local breakdown at edges of stiffeners and weld
connections and/or light rusting over 20% or more of areas under
consideration, but less than as defined for POOR condition,
P O O R – condition with general breakdown of coating over 20% or more of
areas or hard scale at 10% or more of areas under consideration.
C a r g o l e n g t h a r e a – that part of the ship which includes all cargo holds and
adjacent areas including fuel tanks, cofferdams, ballast tanks and void spaces.
S p e c i a l c o n s i d e r a t i o n − as used in this document is taken to mean as a
minimum, that sufficient close-up inspection and thickness measurements are taken
to confirm the actual average condition of the structure under the coating.
P r o m p t a n d T h r o u g h R e p a i r – permanent repair completed at the time
of survey to the satisfaction of the Surveyor, therein removing the need for the
imposition of any associated condition of classification.
1.3 Repairs
1.3.1 Any damage in association with wastage over the allowable limits (including
buckling, grooving, detachment or fracture), or extensive areas of wastage over the
6
allowable limits which affects or, in the opinion of the Surveyor, will affect the ship’s
structural, watertight integrity, is to be promptly and thoroughly repaired. Areas to be
considered include:
– side shell frames, their end attachments or adjacent shell plating;
– deck structure and deck plating;
– bottom structure and bottom plating;
– watertight or oiltight bulkheads;
– hatch covers or hatch coamings.
For locations where adequately repair facilities are not available, consideration may
be given to allow the ship to proceed directly to a repair facility. This may require
discharging the cargo and/or temporary repairs for the intended voyage.
1.3.2 Additionally, when a survey results in the identification of substantial corro-

sion or structural defects, either of which, in the opinion of the Surveyor, will impair
the vessel’s fitness for continued service, remedial measures are to be implemented
before the ship continues in service.
2 ANNUAL SURVEY
2.1 Schedule
2.1.1 Annual Surveys are to be held within 3 months before or after anniversary
date from the date of the initial classification survey or of the date credited for the last
Class Renewal Survey.
2.2 Scope
2.2.1 General
2.2.1.1 The survey is to consist of an examination for the purpose of ensuring, as
far as practicable, that the hull, hatch covers, coamings and piping are maintained
in a satisfactory condition.
2.2.2 Examination of the Hull

2.2.2.1 Examination of the hull plating and its closing appliances as far as can be
seen.
2.2.2.2 Examination of watertight penetrations as far as practicable.
2.2.3 Examination of Hatch Covers and Coamings
2.2.3.1 Checking that no unapproved changes have been made to the hatch cov-
ers, hatch coamings and their securing and sealing devices since the last survey.
2.2.3.2 Where mechanically operated steel covers are fitted, checking the satis-
factory condition of:
– hatch covers, including close-up survey of hatch cover plating,
7
– tightness devices of longitudinal, transverse and intermediate cross junctions
(gaskets, gasket lips, compression bars, drainage channels),
– clamping devices, retaining bars, cleating,
– chain or rope pulleys,
– guides,
– guide rails and track wheels,
– stoppers, etc.,
– wires, chains, gypsies, tensioning devices,
– hydraulic system essential to closing and securing,
– safety locks and retaining devices.
Where portable covers, wooden or steel pontoons are fitted, checking the satis-
factory condition of:
– wooden covers and portable beams, carriers or sockets for the portable beam
and their securing devices,
– steel pontoons, including close-up survey of hatch cover plating and thick-
ness measurement,
– tarpaulins,
– cleats, battens and wedges,
– hatch securing bars and their securing devices,
– loading pads/bars and the side plate edge,
– guide plates and chocks,
– compression bars, drainage channels and drain pipes (if any).
2.2.3.3 Checking the satisfactory condition of hatch coamings plating and their
stiffeners including close-up survey.
2.2.3.4 Random checking of the satisfactory operation of mechanically operated

hatch covers is to be made, including:
– stowage and securing in open condition,
– proper fit and efficiency of sealing in closed condition,
– operational testing of hydraulic and power components, wires, chains, and
link drives.
2.2.4 Examination of Cargo Holds
2.2.4.1 For bulk carrier over 10 years of age:
a) Overall survey of all cargo holds. Where the protective coating in cargo
holds is found to be in GOOD condition, the extent of close-up surveys may
be specially considered.2
2
At the time of new construction, all internal and external surfaces of hatch coamings and hatch
covers, and all internal surfaces of the cargo holds, excluding the flat tank top areas and the hop-
per tanks sloping plating approximately 300 mm below the side shell frame and brackets, are to
have an efficient protective coating (epoxy coating or equivalent) applied in accordance with the
8
b) Close-up examination of sufficient extent, minimum 25% of frames, to es-
tablish the condition of the lower region of the shell frames including ap-
prox. lower one third length of side frame at side shell and side frame end
attachment and the adjacent shell plating in the forward cargo hold. Where
this level of survey reveals the need for remedial measures, the survey is to
be extended to include a close-up survey of all of the shell frames and adja-
cent shell plating of that cargo hold, as well as a close-up survey of suffi-
cient extent of all remaining cargo holds.
c) When considered necessary by the Surveyor, or where extensive corrosion ex-
ists, thickness measurement is to be carried out. If the results of these thickness
measurements indicate that substantial corrosion is found, the extent of thick-
ness measurements is to be increased in accordance with Table VIII.
2.2.4.2 For bulk carrier over 15 years of age:

a) Overall survey of all cargo holds. Where the protective coating in cargo
holds is found to be in GOOD condition, the extent of close-up surveys may
be specially considered.2
b) Close-up examination of sufficient extent, minimum 25% of frames, to estab-
lish the condition of the lower region of the shell frames including approx.
lower one third length of side frame at side shell and side frame end attach-
ment and the adjacent shell plating in the forward cargo hold and one other
selected cargo hold. Where this level of survey reveals the need for remedial
measures, the survey is to be extended to include a close-up survey of all of
the shell frames and adjacent shell plating of that cargo hold, as well as a
close-up survey of sufficient extent of all remaining cargo holds.
c) When considered necessary by the Surveyor, or where extensive corrosion
exists, thickness measurement is to be carried out. If the results of these
thickness measurements indicate that substantial corrosion is found, the
extent of thickness measurements is to be increased in accordance with
Table VIII.
d) All piping and penetrations in cargo holds, including overboard piping, are
to be examined.
manufacturer’s recommendation. In the selection of coating due consideration is to be given by

the Owner to intended cargo conditions expected in service.
For existing bulk carriers, where Owners may elect to coat or recoat cargo holds as noted above,
consideration may be given to the extent of the close-up surveys and thickness measurement.
Prior to the coating of cargo holds of existing vessel, scantlings are to be ascertained in the pres-
ence of a Surveyor.
9
2.2.5 Examination of Ballast Tanks
2.2.5.1 Examination of ballast tanks when required as a consequence of the re-

sults of the Class Renewal Survey and Intermediate Survey. When considered nec-
essary by the Surveyor, or where extensive corrosion exists, thickness measurement
is to be carried out. If the results of these thickness measurements indicate that
substantial corrosion is found, the extent of thickness measurements are to be in-
creased in accordance with Table VIII.
2.3 Additional annual survey requirements for the foremost cargo hold
of ships subject to SOLAS XII/9.1
2.3.1 Ships subject to SOLAS XII/9.1 are those meeting all the following condi-
tions:
– Bulk carriers of 150m in length and upwards of single skin construction,
– Carrying solid bulk cargoes having density of 1,780 t/m3 and above,
– contracted for construction before 1 July 1999, and
– constructed with an insufficient number of transverse watertight bulkheads to
enable them to withstand flooding of the foremost cargo hold in all loading
conditions and remain afloat in a satisfactory condition of equilibrium as
specified in SOLAS XII/4.3.
2.3.2 In accordance with SOLAS XII/9.1, for the foremost cargo hold of such
ships, the additional survey requirements listed in Annex V shall apply.
3 INTERMEDIATE SURVEY
3.1 Schedule
3.1.1 The Intermediate Survey is to be held at or between either the 2nd or 3rd
Annual Survey.
3.1.2 Those items which are additional to the requirements of the Annual Survey
may be surveyed either at or between the 2nd and 3rd Annual Survey.
3.2 Scope
3.2.1 General
3.2.1.1 The extent of survey is dependent on the age of the vessel as specified in
3.2.2 to 3.2.4.
3.2.2 Bulk Carriers 5-10 Years of Age, the following is to apply
3.2.2.1 Ballast Tanks
a) For spaces used for salt water ballast, an overall survey of representa-
tive spaces selected by the Surveyor is to be carried out. If such inspec-
tions reveal no visible structural defects, the examination may be
10
reveal no visible structural defects, the examination may be limited to a
verification that the protective coating remains efficient.
b) Where POOR coating condition, corrosion or other defects are found in
salt water ballast spaces or where a protective coating was not applied
from the time of construction, the examination is to be extended to other
ballast spaces of the same type.
c) In salt water ballast spaces other than double bottom tanks, where
a protective coating is found in POOR condition and it is not renewed,
where soft coating has been applied, or where a protective coating was
not applied from the time of construction, maintenance of class is to be
subject to the tanks in question being examined with thickness meas-
urements carried out as considered necessary at annual intervals.
When such breakdown of coating is found in salt water ballast double
bottom tanks, where a soft coating3 has been applied, or where a coating
has not been applied, maintenance of class may be subject to the tanks
in question being examined at annual intervals. When considered neces-
sary by the Surveyor, or where extensive corrosion exists, thickness
measurements should be carried out.
d) In addition to the above requirements, areas found as suspect areas at
the previous Class Renewal Survey are to be overall and Close-up sur-
veyed.
3.2.2.2 Cargo Holds

a) An overall survey of all cargo holds, including Close-up Survey of suf-
ficient extent, minimum 25% of frames, is to be carried out to establish
the condition of:
– shell frames, including their upper and lower attachments, adjacent
shell plating, and transverse bulkheads in the forward cargo hold and
one other selected cargo hold,
– areas found as suspect areas at the previous Class Renewal Survey.
b) Where considered necessary by the Surveyor as a result of the overall
and Close-up Surveys as described in 3.2.2.2a, the survey is to be ex-
tended to include a close-up survey of all of the shell frames and adja-
3
Soft coating always remain soft, and as such present a hazard during structural inspection. Ex-
treme caution in the survey of tanks in which soft coatings have been applied is to be exercised.
Generally, areas in way of access openings and ladders, walkways where provided and other ar-
eas, either identified prior to the start of the survey or subsequent to initial entry, are to be
cleaned, free of soft coating. Areas are to be cleaned for a distance of 2 meters (6 feet) in each di-
rection of the Surveyor’s route including all railings and other hand grabs in way.
It must be kept in mind that, by their very nature, the effective life of soft coating systems is usually
restricted to only about two to four years, before further maintenance and touch-up is required. Vis-
ual assessment of their existing condition can also be very difficult and somewhat misleading, espe-
cially if these have been used to cover-up already severely corroded areas of the structure.
11
cent shell plating of that cargo hold, as well as a Close-up survey of suf-
ficient extent of all remaining cargo holds.
3.2.2.3 Extent of Thickness Measurement

a) Thickness measurement is to be carried out to an extent sufficient to de-
termine both general and local corrosion levels at areas subject to close-up
surveys, as described in 3.2.2.2a. The minimum requirement for thickness
measurements at the Intermediate Survey are areas found to be suspect ar-
eas at the previous Class Renewal Survey.
b) Where substantial corrosion is found, the extent of thickness measure-
ments should be increased in accordance with the requirements of Table
VIII.
c) The thickness measurement may be dispensed with, provided the Sur-
veyor is satisfied by the close-up survey, that there is no structural
diminution and the protective coating, where fitted, remains effective.
d) Where the protective coating in cargo holds4 is found to be in GOOD
condition, the extent of close-up surveys may be specially considered.
3.2.3 Bulk Carriers 10 – 15 Years of Age, the following is to apply

3.2.3.1 Ballast Tanks
a) For Bulk Carriers:
– all salt water ballast tanks are to be examined. If such inspections re-
veal no visible structural defects, the examination may be limited to
a verification that protective coating remains efficient.
b) For Ore Carriers:
– all web frame rings – in one ballast wing tank;
– one deck transverse – in each of the remaining ballast wing tanks;
– both transverse bulkheads – in one ballast wing tank;
– one transverse bulkhead – in each remaining ballast wing tank.
c) The requirements of 3.2.2.1 b, c and d apply.
3.2.3.2 Cargo Holds
a) An overall survey of all cargo holds, including close-up survey of suffi-
cient extent, minimum 25% of frames, is to be carried out to establish
the condition of:
– Shell frames including their upper and lower end attachments, adja-
cent shell plating, and transverse bulkheads of all cargo holds;
– Areas found suspect at the previous Class Renewal Survey.
4
See note 2 (page 8/9)
12
b) Where considered necessary by the surveyor as a result of the overall
and close-up survey as described in 3.2.3.2a, the survey is to be ex-
cent plating of all cargo holds.
3.2.3.3 Extent of thickness measurements
a) Thickness measurement is to be carried out to an extent sufficient to de-
termine both general and local corrosion levels at areas subject to close-up
surveys, as described in 3.2.3.2a. The minimum requirement for thickness
measurements at the Intermediate Survey are areas found to be suspect ar-
eas at the previous Class Renewal Survey.
b) The requirements of 3.2.2.3b, c and d apply.
3.2.4 Bulk Carriers exceeding 15 years of age, the following is to apply
3.2.4.1 The requirements of the Intermediate survey shall be to the same extent
as the previous class renewal survey as required in 4 and 5.1. However, testing of
cargo and ballast tanks is not required unless deemed necessary by the attending
surveyor.
3.2.4.2 In lieu of the requirements of 4.2.2, an under water survey may be con-
sidered as equivalent.
4 CLASS RENEWAL SURVEY
4.1 Schedule
4.1.1 Class Renewal Surveys are to be carried out at 5 years intervals to renew the
Class Certificate.
4.1.2 The first Class Renewal Survey is to be completed within 5 years from the
date of the initial classification survey and thereafter 5 years from the credited date of
the previous Class Renewal Survey. However, an extension of class of 3 months
maximum beyond the 5th year can be granted in exceptional circumstances. In this
case, the next period of class will start from the expiry date of the Class Renewal
Survey before the extension was granted.
4.1.3 For surveys completed within 3 months before the expiry date of the Class
Renewal Survey, the next period of class will start from the expiry date of the Class
Renewal Survey. For surveys completed more than 3 months before the expiry date
of the Class Renewal Survey, the period of class will start from the survey comple-
tion date.
4.1.4 The Class Renewal Survey may be commenced at the 4th Annual Survey
and be progressed with a view to completion by the 5th anniversary date.
13
4.1.5 As part of the preparation for the Class Renewal Survey, the thickness meas-
urement and Survey Programme are to be dealt with in advance of the Class Renewal
Survey. The thickness measurement is not to be held before the 4th Annual Survey.
4.2 Scope
4.2.1 General
4.2.1.1 The Class Renewal Survey is to include, in addition to the requirements

of the Annual Survey, examination, tests and checks of sufficient extent to ensure
that the hull and related piping are in a satisfactory condition and that the ship is fit
for its intended purpose for the new period of class of 5 years to be assigned, sub-
ject to proper maintenance and operation and to periodical surveys being carried
out at the due dates.
4.2.1.2 All cargo holds, salt water ballast tanks, including double bottom tanks,
pipe tunnels, cofferdams and void spaces bounding cargo holds, decks and outer
hull are to be examined, and this examination is to be supplemented by thickness
measurement and testing as deemed necessary, to ensure that the structural integrity
remains effective.
The examination is to be sufficient to discover substantial corrosion, significant
deformation, fractures, damages and other structural deterioration.
4.2.1.3 All piping systems within the above spaces are to be examined and tested
under working conditions to ensure that the condition remains satisfactory.
4.2.1.4 The survey extent of combined ballast/cargo holds is to be evaluated

based on the records of ballast history, the extent of corrosion protection system
provided, and the extent of corrosion found.
4.2.1.5 The survey extent of ballast tanks converted to void spaces is to be spe-
cially considered in relation to the requirements for ballast tanks.
4.2.2 Dry Dock Survey
4.2.2.1 A survey in dry dock is to be a part of the Class Renewal Survey.
4.2.3 Tank Protection
4.2.3.1 Where provided, the condition of coating or corrosion prevention of bal-

last tanks is to be examined. For tanks used for salt water ballast, excluding double
bottom tanks, where a protective coating is found in POOR condition and it is not
renewed, where soft coating5 has been applied, or where a protective coating was
5
See note 3 (page 11)
14
not applied from the time of construction, maintenance of class is to be made sub-
ject to the tanks in question being examined at annual intervals.
When such breakdown of coating is found in salt water ballast double bottom
tanks, and it is not renewed, where a soft coating has been applied, or where
a protective coating was not applied from the time of construction, maintenance of
class may be subject to the tanks in question being examined at annual intervals.
When considered necessary by the surveyor, or where extensive corrosion exists,
thickness measurements should be carried out.
4.2.3.2 Where the protective coating in cargo holds6 is found to be in GOOD
condition, the extent of close-up surveys and thickness measurements may be spe-
cially considered.
4.2.4 Hatch Covers and Coamings
The hatch covers and coamings are to be surveyed as follows:
4.2.4.1 A thorough inspection of the items listed in 2.2.3 is to be carried out.
4.2.4.2 Checking of the satisfactory operation of all mechanically operated hatch

covers is to be made, including:
– stowage and securing in open condition,
– proper fit and efficiency of sealing in closed condition,
– operational testing of hydraulic and power components, wires, chains and
link drives.
4.2.4.3 Checking the effectiveness of sealing arrangements of all hatch covers by

hose testing or equivalent.
4.2.4.4 Thickness measurement of the hatch cover and coaming plating and stiff-
eners is to be carried out as given in Table II.
4.3 Extent of Overall and Close-up Survey
4.3.1 An overall survey of all tanks and spaces, excluding fuel oil tanks, is to be
carried out at each Class Renewal Survey. For fuel oil tanks, the necessity for the
overall survey is to be determined based on the ship’s age.
4.3.2 Each Class Renewal Survey is to include a close-up examination of sufficient

extent to establish the condition of the shell frames and their end attachments in all
cargo holds and salt water ballast tanks as indicated in Table I.
6
15
4.4 Extent of Thickness Measurement
4.4.1 The minimum requirements for thickness measurements at Class Renewal

Survey are given in Table II and Annex III for additional thickness measurement
guidelines applicable to the vertically corrugated transverse watertight bulkhead be-
tween cargo holds Nos. 1 and 2 on ships subject to compliance with the requirements
contained in Supplement to Part II – Hull of Rules for the Classification and Con-
struction of Sea-going Ships.
4.4.2 Representative thickness measurement to determine both general and local
levels of corrosion in the shell frames and their end attachments in all cargo holds and
salt water ballast tanks is to be carried out. Thickness measurement is also to be car-
ried out to determine the levels of corrosion of the transverse bulkhead plating.
The thickness measurements may be dispensed with provided the surveyor is
satisfied by the close-up examination that there is no structural diminution and the
protective coating, where applied, remains efficient.
4.4.3 The Surveyor may extend the thickness measurement as deemed necessary.
Provision for extended measurements for areas with substantial corrosion are
given in Table VIII and may be additionally specified in the Survey Programme as
required by 5.1.
4.4.4 For areas in spaces where coating is found to be in a GOOD condition the
extent of thickness measurements according to Table II may be specially considered
by PRS. Refer also to 4.2.3.2.7
4.4.5 Transverse sections should be chosen where the largest reductions are sus-
pected to occur or are revealed from deck plating measurements.
4.5 Extent of Tank Testing
4.5.1 All boundaries of salt water ballast tanks, deep tanks and cargo holds used
for salt water ballast within the cargo area length are to be pressure tested. For fuel oil
tanks, only the representative tanks are to be pressure tested.
4.5.2 The Surveyor may extend the tank testing as deemed necessary.
4.5.3 Tanks to be tested with a head of liquid to the top of the hatches for bal-
last/cargo holds or top of air pipes for ballast tanks or fuel tanks, if this gives a higher
pressure.
7
16
5 PREPARATION FOR SURVEY
5.1 Survey Programme

5.1.1 A specific Survey Programme is to be worked out in advance of Class Re-
newal Survey by the Owner in co-operation with PRS. The Survey Programme is to
be in a written format on PRS’ Form No. 328 PR.
5.1.2 In developing the Survey Programme, the following documentation should
be collected and consulted with a view to selecting tanks, holds, areas, and structural
elements to be examined:
– survey status and basic ship information,
– documentation on-board, as described in 6.2 and 6.3
– main structural plans (scantling drawings), including information regarding
the use of high tensile steels (HTS),
– relevant previous survey and inspection reports from both PRS and the
Owner,
– information regarding the use of the ship's holds and tanks, typical cargoes
and other relevant data,
– information regarding corrosion protection level on the newbuilding,
– information regarding the relevant maintenance level during operation.
5.1.3 The submitted Survey Programme is to account for and comply, as

a minimum, with the requirements of Tables I, II and 4.5 for close-up survey, thick-
ness measurement and tank testing, respectively, and is to include relevant informa-
tion including at least:
– basic ship information and particulars,
– main structural plans (scantling drawings), including information regarding
the use of high tensile steels (HTS),
– plan of holds and tanks,
– list of holds and tanks with information on use, protection and condition of
coating,
– conditions for survey (e.g. information regarding hold and tank cleaning, gas
freeing, ventilation, lighting, etc.),
– provisions and methods for access to structures,
– equipment for surveys,
– nomination of holds, tanks and areas for close-up survey (per Table I),
– nomination of sections for thickness measurement (per Table II),
– nomination of tanks for tank testing ( per 4.5),
– damage experience related to the ship in question.
5.1.4 PRS will advise the Owner of the maximum acceptable structural corrosion
diminution levels applicable to the vessel.
17
5.1.5 Use may also be made of “Guidelines for Technical Assessment in Conjunc-
tion with Planning for Enhanced Surveys of Bulk Carriers Class Renewal Survey –
Hull”, contained in Annex I.
These guidelines are a recommended tool which may be invoked at the discre-
tion of PRS, when considered necessary and appropriate, in conjunction with the
preparation of the required Survey Programme.
5.2 Conditions for Survey

5.2.1 The Owner is to provide the necessary facilities for a safe execution of the
survey.
5.2.2 Tanks and spaces are to be safe for access, i.e. gas freed, ventilated and the
requirements given in PRS Publication No. 47/P – Requirements for Safe Entry to
Confined Spaces, are to be met.
5.2.3 Tanks and spaces are to be sufficiently clean and free from water, scale, dirt,
oil residues, etc. to reveal significant corrosion, deformation, fractures, damages or
other structural deterioration. In particular this applies to areas which are subject to
thickness measurements.
5.2.4 Sufficient illumination is to be provided to reveal significant corrosion, de-

formation, fractures, damages or other structural deterioration.
5.3 Access to Structures

5.3.1 For overall survey, means are to be provided to enable the Surveyor to ex-
amine the hull structure in a safe and practical way.
5.3.2 For close-up survey in a cargo holds and salt water ballast tanks, one or more
of the following means for access, acceptable to the Surveyor, are to be provided:
– permanent staging and passages through structures
– temporary staging, e.g. ladders, and passages through structures;
– lifts and movable platforms,
– other equivalent means.
5.4 Equipment for Survey

5.4.1 Thickness measurement is normally to be carried out by means of ultrasonic
test equipment. The accuracy of the equipment is to be proven to the Surveyor as
required.
5.4.2 One or more of the following fracture detection procedures may be required
if deemed necessary by the Surveyor:
– radiographic equipment,
– ultrasonic equipment,
18
– magnetic particle equipment,
– dye penetrant.
5.5 Survey at Sea or at Anchorage

5.5.1 Voyage surveys may be accepted provided the Surveyor is given the neces-
sary assistance from the personnel on board. Necessary precautions and procedures
for carrying out the survey are to be in accordance with 5.1, 5.2, 5.3 and 5.4.
5.5.2 A communication system is to be arranged between the survey party in the

spaces under examination and the responsible officer on deck.
6 DOCUMENTATION ON BOARD
6.1 General
6.1.1 The Owner are to supply and maintain on board documentation as specified
in 6.2 which is to be readily available for the Surveyor.
6.1.2 The documentation is to be kept on board for the life time of the ship.
6.2 Survey Report File
6.2.1 A Survey Report File is to be a part of the documentation on board consist-

ing of:
– reports of structural surveys,
– Executive Hull Summary,
– thickness measurement reports.
6.2.2 The Survey Report File is to be available also in the Owner’s and PRS’ of-
fices.
6.3 Supporting Documents
6.3.1 The following additional documentation is to be available on board:

– main structural plans of cargo and ballast tanks,
– previous repair history,
– cargo and ballast history,
– reports on inspections by ship’s personnel, according to the guidance for re-
porting as shown in Table III, with reference to:
– structural deterioration in general,
– leakages in bulkheads and piping,
– condition of coating or corrosion protection, if any,
– any other information that will help identify suspect areas requiring inspection
and
– Survey Programme as required by 5.1 until such time as the Class Renewal
Survey has been completed.
19
6.4 Review of Documentation on Board
6.4.1 Prior to inspection, the Surveyor is to examine the completeness of the

documentation on board and its contents as a basis for the survey.
7 PROCEDURES FOR THICKNESS MEASUREMENTS
7.1 General
7.1.1 Thickness measurements required, if not carried out by the Society itself or
by a company subcontracted directly by PRS, are to be witnessed by a Surveyor on
board to the extent necessary to control the process. The thickness measurement op-
erator is to be a party to the survey planning meeting to be held prior to commencing
the survey.
7.2 Certification of Thickness Measurement Company
7.2.1 The thickness measurement is to be carried out by a qualified company certi-
fied by PRS according to the principles stated in Table V.
7.3 Reporting
7.3.1 A thickness measurement report is to be prepared and submitted to PRS. The

report is to give the location of measurements, the thickness measured, as well as
corresponding original thickness. Furthermore, the report is to give the date when the
measurements were carried out, type of measuring equipment, names of personnel
and their qualifications and has to be signed by the operator.
The thickness measurement report is to follow the principles as specified in
Recommended Procedures for Thickness Measurements of Bulk Carriers contained
in Annex II.
7.3.2 The Surveyor is to verify and countersign the thickness measurement report.
8 REPORTING AND EVALUATION OF SURVEY
8.1 Evaluation of Survey Report
8.1.1 The data and information on the structural condition of the vessel, collected
during the survey, are to be evaluated for acceptability and continued structural
integrity of the vessel.
8.2 Reporting
8.2.1 The principles for survey reporting are shown in Table VI.
8.2.2 An Executive Hull Summary of the survey and results is to be issued to the
Owner on PRS’ Form No. 328 HS – “Executive Hull Summary” and placed on board
the vessel for reference at future surveys.The Executive Hull Summary is to be en-
dorsed by the PRS Head Office.
20
ENCLOSURES
Table I
MINIMUM REQUIREMENTS FOR CLOSE-UP SURVEYS
AT CLASS RENEWAL SURVEYS OF BULK CARRIERS
I class renewal II class renewal III class renewal IV and subsequent
class renewals
Age ≤ 5 years 5 < Age ≤ 10 years 10 < Age ≤ 15 years Age > 15 years
1 2 3 4
(A) 25% of shell (A) 25% of shell (A) All shell frames in (A) All shell frames in
frames in the for- frames in all cargo the forward cargo all cargo holds in-
ward cargo hold at holds including hold and 25% of cluding upper and
representative po- upper and lower frames in remain- lower end attach-
sitions. end attachments ing cargo holds, ments and adjacent
and adjacent shell including upper shell plating.
plating. and lower end at-
tachments and ad-
jacent shell plating.
(A) Selected frames in
remaining cargo
holds.
(B) One transverse (B) One transverse (B) All transverse Areas (B) - (E) as
web with associ- web with associ- webs with associ- for Class Renewal
ated plating and ated plating and ated plating and Survey No. III.
longitudinals in longitudinals in longitudinals in
two representative each water ballast each water ballast
water ballast tanks tank (i.e. topside, tank (i.e. topside,
of each type (i.e. hopper side or side hopper side or side
topside, hopper tank). tank).
side or side tank).
(B) Forward and aft (B) All transverse
transverse bulk- bulkheads in bal-
head in one side last tanks, includ-
ballast tank, in- ing stiffening sys-
cluding stiffening tem.
system.
(C) Two selected (C) One transverse (C) All cargo hold
cargo hold trans- bulkhead in each transverse bulk-
verse bulkheads, cargo hold, in- heads, including
including internal cluding internal internal structure
structure of upper structure of upper of upper and lower
and lower stools, and lower stools, stools, where fit-
where fitted. where fitted. ted.
(D) All cargo hold (D) All cargo hold (D) All cargo hold
hatch covers and hatch covers and hatch covers and
coamings (plating coamings (plating coamings (plating
and stiffeners). and stiffeners). and stiffeners).
(E) Selected areas of (E) All deck plating
deck plating inside inside line of hatch
line of hatch openings between
openings between cargo hold
cargo hold hatches.
hatches.
21
(A) – Cargo hold transverse (B) – Transverse web frame or (C) – Cargo hold transverse
frames watertight transverse bulkheads plating, stiff-
bulkhead in water ballast eners and girders
tanks
(D) – Cargo hold hatch covers (E) – Deck plating inside line
and coamings of hatch openings be-
tween cargo hold hatches
See sketches on page 57 for the areas corresponding to (A), (B), (C), (D) and (E).
Note: Close-up survey of transverse bulkheads to be carried out at four levels:
Level (a) Immediately above the inner bottom and immediately above the line of gussets (if fitted)
and shedders for ships without lower stool.
Level (b) Immediately above and below the lower stool shelf plate (for those ships fitted with lower
stools), and immediately above to the line of the shedder plates.
Level (c) About mid-height of the bulkheads.
Level (d) Immediately below the upper deck plating and immediately adjacent to the upper wing tank,
and immediately below the upper stool shelf plate for those ships fitted with upper stools, or
immediately below the topside tanks.
Table II
MINIMUM REQUIREMENTS FOR THE THICKNESS MEASUREMENTS
AT CLASS RENEWAL SURVEYS OF BULK CARRIERS
I class renewal II class renewal III class renewal IV and subsequent class
renewals
Age ≤ 5 years 5 < Age ≤ 10 years 10 < Age ≤ 15 years Age > 15 years
1. Suspect 1. Suspect areas 1. Suspect areas 1. Suspect areas
areas
2. Within the cargo length: 2. Within the cargo length: 2. Within the cargo length:
a) Two transverse sec- a) Each deck plate out- a) Each deck plate out-
tions of deck plating side line of cargo side line of cargo
outside line of cargo hatch openings. hatch openings.
opening. b) 2 transverse sections, b) 3 transverse sections,
one in the amidships one in the amidships
area, outside line of area, outside line of
cargo hatch opening. cargo hatch opening.
c) Each bottom plate.
3. Measurement, for gen- 3. Measurement, for gen- Points 3, 4, 5 and 6 as
eral assessment and re- eral assessment and re- for Class Renewal Sur-
cording of corrosion cording of corrosion vey No. III.
pattern, of those struc- pattern, of those struc-
tural members subject to tural members subject to
close-up survey accord- close-up survey accord-
ing to Table I. ing to Table I.
4. Wind and water strakes 4. All wind and water
in way of the transverse strakes within the cargo
sections considered un- length area.
der point 2 above.
5. Selected wind and water
strakes outside the cargo
length area.
6. See 1.1.4 and Annex III
for additional thickness
measurement guidelines.
22
Table III
Ship’s name .......................................
OWNER’S INSPECTION REPORT – Structural condition
For tank/hold No. ………

Grade of steel: Deck: ................................... Side: ...................................
Bottom: ................................ Long. bhd.: .........................
Elements Cracks Buckles Corrosion Coating Pitting Modification

other condition Repairs
Deck
Bottom
Side
Longitudinal
bulkheads
Transverse
bulkheads
Repairs carried out due to:*)
Thickness measurements carried out, dates:
Results in general:
Overdue surveys:
Outstanding conditions of class:

Comments:
*) Repairs are to be surveyed by PRS’ Surveyor
Date of inspection: ......................................................................................................
Inspected by: ..............................................................................................................

Signature: ....................................................................................................................
23
Table IV
PRINCIPLES FOR PLANNING DOCUMENT

Note: Table IV is superseded by Annex I
Table V
PROCEDURES
FOR CERTIFICATION OF FIRMS ENGAGED IN THICKNESS
MEASUREMENTS OF HULL STRUCTURES
1 Application
This guidance applies for certification of the firms which intend to engage in
the thickness measurement of hull structures of the vessels.
2 Procedure for Certification
2.1 Submission of Documents:

The following documents are to be submitted to PRS’ H.O. for approval:
.1 Outline of firms, e.g. organisation and management structure.
.2 Experience of the firms on thickness measurement, inter alia of hull struc-
tures of the vessels.
.3 Technicians careers, i.e. experiences of technicians as thickness measure-
ment operators, technical knowledge of hull structure, etc. Operators should
be qualified according to a recognised industrial NDT Standard.
.4 Equipment used for thickness measurement such as ultrasonic testing ma-
chines and its maintenance/calibration procedures.
.5 A guide for thickness measurement operators.
.6 Training programmes of technicians for thickness measurement.
.7 Measurement record format in accordance with PRS’ Recommended Proce-
dures for Thickness Measurements of Bulk Carriers contained in Annex II.
2.2 Auditing of the Firms

Upon reviewing the documents submitted with satisfactory results, the firm is
audited in order to ascertain that the firm is duly organised and managed in accor-
dance with the documents submitted, and eventually is capable of conducting
thickness measurements of the hull construction of the ships.
2.3 Certification is conditional on an onboard demonstration of thickness meas-
urements, as well as satisfactory reporting.
24
3 Certification
3.1 Upon satisfactory results of both the audit of the firm in 2.2 and the demon-
stration tests in 2.3 above, PRS will issue a Certificate of Approval, as well as no-
tice to the effect that the thickness measurement operation system of the firm has
been certified by PRS.
3.2 Renewal/endorsement of the Certificate is to be made at intervals not ex-
ceeding 3 years by verification that original conditions are maintained.
4 Information of any alteration to the certified thickness measurement

operation system
In case where any alteration to the certified thickness measurement operation

system of the firm is made, such an alteration is to be immediately informed to
PRS. Re-audit is made where deemed necessary by PRS.
5 Cancellation of approval
Approval may be cancelled in the following cases:

.1 Where the measurements were improperly carried out or the results were
improperly reported.
.2 Where the PRS’ Surveyor found any deficiencies in the approved thickness
measurement operation system of the firm.
.3 Where the firm failed to inform of any alteration in 4 above to PRS.
Table VI
REPORTING PRINCIPLES
To fulfil the reporting requirements resulting from hull survey of bulk carriers,
the following PRS’ Forms are to be used:
1. Form No. 328 M – Bulk Carrier Hull Survey Report,
2. Form No. 328 HS – Bulk Carrier/Oil Tanker/Chemical Tanker* Ex-
ecutive Hull Summary,
3. Form No. 328 CS – Bulk Carrier/Oil Tanker/Chemical Tanker* Hull
Close-up Examination Report,
4. Form No. 328 CC – Report on Evaluation of Coating Condition.
Table VII
EXECUTIVE HULL SUMMARY
PRS Form No. 328 HS is to be used. (See also Table VI, item 2)
25
Table VIII
REQUIREMENTS FOR EXTENT OF THICKNESS MEASUREMENT

AT THOSE AREAS OF SUBSTANTIAL CORROSION
Class Renewal Survey of Bulk Carriers within the Cargo Area
SHELL STRUCTURES
EXTENT PATTERN
STRUCTURAL MEMBER
OF MEASUREMENT OF MEASUREMENT
1. Bottom and side shell plating a. Suspect plate, plus four a. 5 point pattern for each panel
adjacent plates between longitudinals
b. See other tables for particu-
lars on gauging in way of
tanks and cargo holds
2. Bottom/side shell longitudi- Minimum of three longitudinals 3 measurements in line across
nals in way of suspect areas web
3 measurements on flange
TRANSVERSE BULKHEADS IN CARGO HOLDS

EXTENT PATTERN
STRUCTURAL MEMBER
1. Lower stool a. Transverse band within a. 5 point pattern between
25 mm of welded connection stiffeners over 1 metre length
to inner-bottom
b. Transverse band within 25 b. Ditto
mm of welded connection to
shelf plate
2. Transverse bulkhead a. Transverse band at approxi- a. 5 point pattern over 1 sq.
mately mid height metre of plating
b. Transverse band at part of b. 5 point pattern over 1 sq.
bulkhead adjacent to upper metre of plating
deck or below upper stool
shelf plate (for those ships
fitted with upper stools)
26
Table VIII cont’d
DECK STRUCTURE INCLUDING CROSS STRIPS, MAIN CARGO

HATCHWAYS, HATCH COVERS, COAMINGS AND TOPSIDE TANKS
EXTENT PATTERN
STRUCTURAL MEMBER
1. Cross deck strip plating Suspect cross deck strip plating a. 5 point pattern between
underdeck stiffeners over 1
metre length
2. Underdeck stiffeners a. Transverse members a. 5 point pattern at each end
and mid span
b. Longitudinal member b. 5 point pattern on both web
and flange
3. Hatch covers a. Side and end skirts, each 3 a. 5 point pattern at each loca-
locations tion
b. 3 longitudinal bands, out- b. 5 point measurement each
board strakes (2) and centre- band
line strake (1)
4. Hatch coamings Each side and end of coaming, 5 point measurement each band,
one band lower 1/3, one band i.e. end or side coaming
upper 2/3 of coaming
5. Topside water ballast tanks a. Watertight transverse bulk-
heads
I. lower 1/3 of bulkhead I. 5 point pattern over 1 sq.
metre of plating
II. upper 2/3 of bulkhead II. 5 point pattern over 1 sq.
metre of plating
III. stiffeners III. 5 point pattern over 1 metre
length
b. 2 representative swash trans-
verse bulkheads
I. lower 1/3 of bulkhead I. 5 point pattern over 1 sq.
metre of plating
II. upper 2/3 of bulkhead II. 5 point pattern over 1 sq.
metre of plating
III. stiffeners III. 5 point pattern over 1 metre
length
c. 3 representative bays of
slope plating
I. lower 1/3 of tank I. 5 point pattern over 1 sq.
metre of plating
II. upper 2/3 of tank II. 5 point pattern over 1 sq.
metre of plating
d. Longitudinals, suspect and d. 5 point pattern both web and
adjacent flange over 1 metre length
6. Main deck plating Suspect plates and adjacent (4) 5 point pattern over 1 sq. metre
of plating
7. Main deck longitudinals Minimum of 3 longitudinals 5 point pattern on both web and
where plating measured flange over 1 metre length
8. Web frames/transverses Suspect plates 5 point pattern over 1 sq. metre
27
Table VIII cont’d
DOUBLE BOTTOM AND HOPPER STRUCTURE

EXTENT PATTERN
STRUCTURAL MEMBER
1. Inner/double bottom plating Suspect plate plus all adjacent 5 point pattern for each panel
plates between longitudinals over
1 metre length
2. Inner/double bottom longitu- Three longitudinals where plates 3 measurements in line across
dinals measured web and 3 measurements on
flange
3. Longitudinal girders or Suspect plates 5 point pattern over about
transverse floors 1 square metre
4. Watertight bulkheads (WT a. lower 1/3 of tank a. 5 point pattern over 1 sq.
floors) metre of plating
b. upper 2/3 of tank b. 5 point pattern alternate
plates over 1 sq. metre of
plating
5. Web frames Suspect plate 5 point pattern over 1 sq. metre
of plating
6. Bottom/side shell longitudi- Minimum of three longitudinals 3 measurements in line across
nals in way of suspect areas web
3 measurements on flange
CARGO HOLDS
EXTENT PATTERN
STRUCTURAL MEMBER
1. Side shell frames Suspect frame and each adjacent a. At each end and mid span:
5 point pattern of both web
and flange
b. 5 point pattern within 25 mm
of welded attachment to both
shell and lower slope plate
28
Annex I
GUIDELINES FOR TECHNICAL ASSESSMENT IN CONJUNCTION

WITH PLANNING FOR ENHANCED SURVEYS OF BULK CARRIERS
CLASS RENEWAL SURVEY – HULL

Contents Page
1 INTRODUCTION ............................................................................................................................ 29
2 PURPOSE AND PRINCIPLES .................................................................................................. 30
2.1 Purpose ................................................................................................................................................. 30
2.2 Minimum Requirements ................................................................................................................ 30
2.3 Timing .................................................................................................................................................. 30
2.4 Aspects to be Considered .............................................................................................................. 30
3 TECHNICAL ASSESSMENT .................................................................................................... 31
3.1 General ................................................................................................................................................. 31
3.2 Methods ................................................................................................................................................ 31
3.2.1 Design Details ....................................................................................................................................... 31
3.2.2 Corrosion ............................................................................................................................................... 32
3.2.3 Locations for Close-up Survey and Thickness Measurements .................................................... 33
References:
1. PRS Publication No. 39/P – Hull Surveys of Bulk Carriers, 2001

2. TSCF, Guidance Manual for the Inspection and Condition Assessment of
Tanker Structures, 1986,
3. TSCF1), Condition Evaluation and Maintenance of Tanker Structures,
1992,2)
4. IACS, Bulk Carriers: Guidelines for Surveys, Assessment and Repair of
Hull Structure, 1994.
1 INTRODUCTION
These guidelines contain information and suggestions concerning technical as-

sessments which may be of use in conjunction with the planning of enhanced Class
Renewal Surveys of bulk carriers.
As indicated in 5.1.5 of PRS Publication No. 39/P – Hull Surveys of Bulk Car-
riers, (Ref. 1), the guidelines are a recommended tool which may be invoked at the
discretion of PRS, when considered necessary and appropriate, in conjunction with
the preparation of the required Survey Programme.
29
2 PURPOSE AND PRINCIPLES
2.1 Purpose
The purpose of the technical assessment described in these guidelines is to assist
in identifying critical structural areas, nominating suspect areas and in focusing
attention on structural elements or areas of structural elements which may be par-
ticularly susceptible to, or evidence a history of, wastage or damage. This informa-
tion may be useful in nominating locations, areas, holds and tanks for thickness
measurements, close-up survey and tank testing.
Critical structural areas are locations which have been identified from calcula-
tions to require monitoring or from the service of the subject ship or from similar or
sister ships (if available) to be sensitive to cracking, buckling or corrosion which
would impair the structural integrity of the ship.
2.2 Minimum Requirements
However, these guidelines may not be used to reduce the requirements pertain-
ing to thickness measurements, close-up survey and tank testing contained in Ta-
bles I, II and paragraph 4.5, respectively, of PRS Publication No. 39/P, which are,
in all cases, to be complied with as a minimum.
2.3 Timing
As with other aspects of survey planning, the technical assessment described in

these guidelines should be worked out by the Owner or operator in cooperation
with PRS well in advance of the commencement of the Class Renewal Survey, i.e.
prior to commencing the survey and normally at least 12 to 15 months before the
survey's completion due date.
2.4 Aspects to be Considered
Technical assessment, which may include quantitative or qualitative evaluation of

relative risks of possible deterioration of the following aspects of a particular ship
may be used as a basis for the nomination of holds, tanks and areas for survey:
– Design features such as stress levels on various structural elements, design
details and extent of use of high tensile steel.
– Former history with respect to corrosion, cracking, buckling, indents and re-
pairs for the particular ship, as well as similar vessels, where available.
– Information with respect to types of cargo carried, protection of tanks and
condition of coating, if any, of holds and tanks,
Technical assessment of the relative risks of susceptibility to damage or deterio-
ration of various structural elements and areas are to be judged and decided on the
basis of recognised principles and practices, such as may be found in the IACS
publication “Bulk Carriers: Guidelines for Surveys, Assessment and Repair of Hull
Structure”, (Ref. 4).
30
3 TECHNICAL ASSESSMENT
3.1 General
There are three basic types of possible failure which may be the subject of tech-
nical assessment in connection with planning of surveys: corrosion, cracks and
buckling. Contact damages are not normally covered by the survey plan since in-
dents are usually noted in memoranda and assumed to be dealt with as a normal
routine by Surveyors.
Technical assessment performed in conjunction with the survey planning proc-
ess are, in principle, be as shown schematically in Figure 1. Figure 1 depicts how
technical assessment can be carried out in conjunction with the survey planning
process. The approach is basically an evaluation of the risk in the following aspects
based on the knowledge and experience related to:
– design,
– corrosion.
The design is to be considered with respect to structural details which may be
susceptible to buckling or cracking as a result of vibration, high stress levels or
fatigue.
Corrosion is related to the ageing process and is closely connected with the
quality of corrosion protection at newbuilding, and subsequent maintenance during
the service life. Corrosion may also lead to cracking and/or buckling.
3.2 Methods
3.2.1 Design Details

Damage experience related to the ship in question and similar ships, where
available, is the main source of information to be used in the process of planning.
In addition, a selection of structural details from the design drawings are to be in-
cluded.
Typical damage experience to be considered will consist of:
– number, extent, location and frequency of cracks,
– location of buckles.
This information may be found in the survey reports and/or the Owner’s files,
including the results of the Owner’s own inspection. The defects are to be analysed,
noted and marked on sketches.
In addition, general experience is to be utilised. For example, Figure 2 shows
typical locations in bulk carriers which experience has shown may be susceptible to
structural damage. Reference is to be also made to IACS’s “Bulk Carriers: Guide-
lines for Surveys, Assessment and Repair of Hull Structure”, (Ref. 4), which con-
tains a catalogue of typical damages and proposed repair methods for various bulk
carrier structural details.
31
Such figures is to be used together with a review of the main drawings, in order
to compare with the actual structure and search for similar details which may be
susceptible to damage. An example is given in Figure 3.
The review of the main structural drawings, in addition to using the above men-
tioned figures, should include checking for typical design details where cracking
has been experienced. The factors contributing to damage are to be carefully con-
sidered.
The use of high tensile steel (HTS) is an important factor. Details showing good
service experience where ordinary, mild steel has been used may be more suscepti-
ble to damage when HTS, and its higher associated stresses are utilised. There is
extensive and, in general, good experience, with the use of HTS for longitudinal
material in deck and bottom structures. Experience in other locations, where the
dynamic stresses may be higher, is less favourable, e.g. side structures.
In this respect, stress calculations of typical and important components and de-
tails, in accordance with the latest Rules or other relevant methods, may prove use-
ful and are to be considered.
The selected areas of the structure identified during this process are to be re-
corded and marked on the structural drawings to be included in the Survey Pro-
gramme.
3.2.2 Corrosion
In order to evaluate relative corrosion risks, the following information is gener-
ally to be considered:
– usage of tanks, holds and spaces,
– condition of coatings,
– condition of anodes,
– cleaning procedures,
– previous corrosion damage,
– ballast use and time for cargo holds,
– risk of corrosion in cargo holds and ballast tanks,
– location of ballast tanks adjacent to heated fuel oil tanks.
“Condition Evaluation and Maintenance of Tanker Structures, 1992”, (Ref. 3)
gives definitive examples which can be used for judging and describing coating
condition, using typical pictures of conditions.
The evaluation of corrosion risks should be based on information in Ref. 4, to-
gether with relevant information on the anticipated condition of the ship as derived
from the information collected in order to prepare the Survey Programme and the
age of the ship.
The various tanks, holds and spaces are to be listed with the corrosion risks
nominated accordingly.
32
3.2.3 Locations for Close-up Survey and Thickness Measurements
On the basis of corrosion risks and the evaluation of design experience, the lo-
cations for initial close-up survey and thickness measurement (sections) may be
nominated.
The sections subject to thickness measurement are to normally be nominated in
tanks, holds and spaces where corrosion risk is judged to be the highest.
The nomination of tanks, holds and spaces for close-up survey is to, initially, be
based on the highest corrosion risk and is to always include ballast tanks.
The principle for the selection should be that the extent is increased by age or
where information is insufficient or unreliable.
33
Input:
Coating condition
Drawings, reports,
Collection of information Anode condition
acceptable corrosion
Usage of tanks
allowance
Design related risk Corrosion risk
Analyse hull damage of Coating condition

this ship Anodes condition
Usage of tanks
Analyse hull damage of

similar ships, where Corrosion damage
available – this ship
Hull damage: general Corrosion damage

experience – similar ship, where
available
Present areas where

damage has been found
and risks considered high.
Mark sketches or drawings
Location for thickness measurement and close-up survey
Survey Programme
Acceptance
by Class & Owner
Survey
Figure 1. Technical assessment and the survey planning process
34
Figure 2. Typical locations susceptible to structural damage or corrosion
35
Figure 3. Typical damage and repair example (Reproduced from Ref. 4)
36
Annex II
RECOMMENDED PROCEDURES FOR THICKNESS MEASUREMENTS

OF BULK CARRIERS
1. This document is to be used for recording the thickness measurements as

required by Table II of PRS Publication No. 39/P.
2. Reporting forms TM1-BC, TM2-BC, TM3-BC, TM4-BC, TM5-BC, TM6-
BC and TM7-BC (pages 39 to 54) are to be used for recording thickness
measurements and the maximum allowable diminution should be stated.
The maximum allowable diminution could be stated in an attached document.
3. The remaining pages (55 to 59) are guidance diagrams and notes relating to
the reporting forms and the procedure for thickness measurement.
CONTENTS:
– General particulars (page 38)
Reporting forms
– TM1-BC Report on thickness measurement of all deck plating, all bottom
shell plating or side shell plating (pages 39/40)
– TM2-BC(I) Report on thickness measurement of shell and deck plating (one,
two or three transverse sections) – Strength deck and sheerstrake plating
(pages 41/42)
– TM2-BC(II) Report on thickness measurement of shell and deck plating
(one, two or three transverse sections) – Shell plating (pages 43/44)
– TM3-BC Report on thickness measurement of longitudinal members (one,
two or three transverse sections) (pages 45/46)
– TM4-BC Report on thickness measurement of transverse structural members
(pages 47/48)
– TM5-BC Report on thickness measurement of cargo hold transverse bulk-
heads (pages 49/50)
– TM6-BC Report on thickness measurement of miscellaneous structural
members (pages 51/52)
– TM7-BC Report on thickness measurement of cargo hold transverse frames
(pages 53/54)
Guidance diagrams and notes
– Thickness measurement – bulk carriers. Typical transverse section indicating
longitudinal and transverse members (page 55)
– Thickness measurement – bulk carriers. Transverse section outline (page 56)
– Close-up survey and thickness measurement areas (page 57)
– Thickness Measurement – Ore Carriers Typical transverse section indicating
longitudinal and transverse members (page 58)
– Thickness Measurement – Ore Carriers Close-Up Survey Requirements
(page 59)
37
General Particulars
Ship’s name:
IMO number:
PRS’ reg. No.:
Port of registry:
Gross tonnage:
Deadweight:
Date of build:
Classification society:
Name of Company performing thickness measurement:

Thickness measurement company certified by:
Certificate No:
Certificate valid from .......................................... to ............................................
Place of measurement:
First date of measurement:
Last date of measurement:
Class renewal survey/intermediate survey due
Details of measurement equipment:
Qualification of operator:
Report number: consisting of sheets
Name of operator: ............................... Name of surveyor: ..................................

Signature of operator: Signature of surveyor: ............................
Company official stamp: PRS official stamp:
NOTES
38
TM1-BC Report on THICKNESS MEASUREMENT of ALL DECK PLATING, ALL BOTTOM SHELL PLATING or SIDE SHELL PLATING*
(* – delete as appropriate)
Ship’s name .......................................................................... PRS’reg. No. .......................................................................................... Report No. .......................................................
STRAKE
POSITION
Foreward reading Aft Reading Maximum
PLATE No. Org. Gauged Diminution P Diminution S Gauged Diminution P Diminution S Mean Diminution Allowable
POSITION or Thick. % Diminution
Letter mm P S mm % mm % P S mm % mm % P S mm
12th forward
11th
10th
9th
8th
7th
6th
5th
4th
3rd
2nd
1st
Amidships
1st aft
2nd
3rd
4th
5th
6th
7th
8th
9th
10th
11th
12th
Operator’s signature .......................................................... Surveyor’s signature .................................................. NOTES – See reverse
39
NOTES
to the Table TM1-BC
1. This report is to be used for recording the thickness measurement of:

A – All strength deck plating within the cargo length area.
B – Keel, bottom shell plating and bilge plating within the cargo length area.
C – Side shell plating that is all wind and water strakes within the length
cargo area.
D – Side shell plating that is selected wind and water strakes outside the
cargo length area.
2. The strake position is to be clearly indicated as follows:
2.1 For strength deck, indicate the number of the strake of plating inboard
from the stringer plate.
2.2 For bottom plating, indicate the number of the strake of plating outboard
from the keel plate.
2.3 For side shell plating, give number of the strake of plating below sheer-
strake and letter as shown on shell expansion.
3. Only the deck plating strakes outside line of openings are to be recorded.
4. Measurements are to be taken at the forward and aft areas of all plates and the
single measurements recorded are to represent the average of multiple mea-
surements.
5. The maximum allowable diminution could be stated in an attached document.
40
TM2-BC (I) Report on THICKNESS MEASUREMENT of SHELL AND DECK PLATING (one, two or three transverse sections)
Ship’s name .......................................................................... PRS’ reg. No. ......................................................................................... Report No. .......................................................
STRENGTH DECK AND SHEERSTRAKE PLATING

FIRST TRANSVERSE SECTION AT FRAME SECOND TRANSVERSE SECTION AT FRAME THIRD TRANSVERSE SECTION AT FRAME
NUMBER NUMBER NUMBER
Max. Max. Max.
STRAKE No. Org. Alwb. Gauged Diminution Diminution No. Org. Alwb. Gauged Diminution Diminution No. Org. Alwb. Gauged Diminution Diminution
POSITION or Thick Dim. P S or Thick Dim. P S or hick. Dim. P S
. .
Letter mm mm P S mm % mm % Letter mm mm P S mm % mm % Letter mm mm P S mm % mm %
Stringer Plate
1st strake inboard
2nd
3rd
4th
5th
6th
7th
8th
9th
10th
11th
12th
13th
14th
centre strike
sheer strike
TOPSIDE
TOTAL
41
NOTES
to the Table TM2-BC(I)
1. This report is to be used for recording the thickness measurement of strength

deck plating and sheerstrake plating transverse sections:
Two or three sections within the cargo length area, comprising of the struc-
tural items (1), (2) and (3) as shown on the diagram of typical transverse sec-
tion.
2. Only the deck plating strakes outside the line of openings are to be recorded.
3. The topside area comprises deck plating, stringer plate and sheerstrake (in-
cluding rounded gunwales).
4. The exact frame station of measurement is to be stated.
5. The single measurements recorded are to represent the average of multiple
measurements.
42
TM2-BC (II) Report on THICKNESS MEASUREMENT of SHELL AND DECK PLATING (one, two or three transverse sections)
SHELL PLATING
Max. Max. Max.
STRAKE No. Org. Alwb. Gauged Diminution Diminution No. Org. Alwb. Gauged Diminution Diminution No. Org Alwb. Gauged Diminution Diminution
POSITION or Thick Dim. P S or Thick Dim. P S or hick. Dim. P S
.
Letter mm mm P S mm % mm % Letter mm mm P S mm % mm % Letter mm mm P S mm % mm %
1 st below sheer
strake
2nd
3rd
4th
5th
6th
7th
8th
9th
10th
11th
12th
13th
14th
15th
16th
17th
18th
19th
20th
keel strake
BOTTOM
TOTAL
43
NOTES
to the Table TM2-BC(II)
1. This report is to be used for recording the thickness measurement of shell

plating transverse sections:
Two or three sections within the cargo length area comprising of the structural
items (4), (5), (6) and (7) as shown on the diagram of typical transverse sec-
tion.
2. The bottom area comprises keel, bottom and bilge plating.
measurements.
44
TM3-BC Report on THICKNESS MEASUREMENT of LONGITUDINAL MEMBERS (one, two or three transverse sections)
Max. Max. Max.
STRUCTURAL Item Org. Alwb. Gauged Diminution Diminution Item Org. Alwb. Gauged Diminution Diminution Item Org. Alwb. Gauged Diminution Diminution
MEMBERS No. Thick Dim. P S No. Thick Dim. P S No. hick. Dim. P S
. .
mm mm P S mm % mm % mm mm P S mm % mm % mm mm P S mm % mm %
45
NOTES
to the Table TM3-BC
1. This report is to be used for recording the thickness measurement of longitudi-

nal members at transverse sections:
Two or three sections within the cargo length area, comprising of the struc-
tural items (8) to (20) as shown on the diagram of typical transverse section.
measurements.
46
TM4-BC
Report on THICKNESS MEASUREMENT of TRANSVERSE STRUCTURAL MEMBERS
in the double bottom, hopper side and topside water ballast tanks
TANK DESCRIPTION:
LOCATION OF STRUCTURE:
Original Max. Alwb. Diminution Diminution
STRUCTURAL MEMBER ITEM Thickness Dim. Gauged
P S
mm mm P S mm % mm %
47
NOTES
to the Table TM4-BC
1. This report form is to be used for recording the thickness measurement of

transverse structural members, comprising of the appropriate structural items
(23) to (25) as shown on diagram of typical transverse section, page 55 of this
document.
2. Guidance for areas of measurement is indicated on the diagrams shown on
page 57 of this document.
measurements.
48
TM5-BC
Report on THICKNESS MEASUREMENT of CARGO HOLD TRANSVERSE BULKHEADS
LOCATION OF STRUCTURE: FRAME NO.:

Original Max.Alwb. Diminution Diminution
STRUCTURAL COMPONENT (PLATING/STIFFENER) Thickness Dim. Gauged P S
mm mm Port Starboard mm % mm %
49
NOTES
to the Table TM5-BC
1. This report form is to be used for recording the thickness measurement of

cargo hold transverse bulkheads.
measurements.
50
TM6-BC
Report on THICKNESS MEASUREMENT of MISCELLANEOUS STRUCTURAL MEMBERS
STRUCTURAL MEMBER: SKETCH

LOCATION OF STRUCTURE:
Org. Max. Diminution Diminution
Description Thick. Alwb. Gauged
P S
Dim.
mm mm P S mm % mm %
51
NOTES
to the Table TM6-BC
1. This report is to be used for recording the thickness measurement of miscella-

neous structural members including the structural items (28), (29), (30) and
(31) as shown on diagram of typical transverse section, page 55 of this docu-
ment.
measurements.
52
TM7-BC
Report on THICKNESS MEASUREMENT of CARGO HOLD TRANSVERSE FRAMES
CARGO HOLD NO.

UPPER PART MID PART LOWER PART
Max. Max. Max.

FRAME Org. Alwb. Diminution Diminution Org. Alwb Diminution Diminution Org. Alwb. Diminution Diminution
NUMBER Gauged P S Thick. Gauged P S Thick. Dim. Gauged P S
Thick. Dim. .
Dim.
mm mm P S mm % mm % mm mm P S mm % mm % mm mm P S mm % mm %
53
NOTES
to the Table TM7-BC
1. This report is to be used for recording the thickness measurement of cargo

hold transverse frames:
Structural item number 34 as shown on the diagram of typical transverse sec-
tion, page 55 of this document.
The single measurements recorded are to represent the average of multiple
measurements.
3. The location and pattern of measurements is to be indicated on the sketches of
hold frames shown below.
54
THICKNESS MEASUREMENT – BULK CARRIERS
Typical transverse section indicating longitudinal and transverse members
55
THICKNESS MEASUREMENT – BULK CARRIERS
Transverse section outline
To be used for longitudinal and transverse members where the typical bulk carrier section is not applicable
56
CLOSE-UP SURVEY AND THICKNESS MEASUREMENT AREAS
57
THICKNESS MEASUREMENT – ORE CARRIERS
TYPICAL TRANSVERSE SECTION INDICATING LONGITUDINAL
AND TRANSVERSE MEMBERS
58
THICKNESS MEASUREMENTS – ORE CARRIERS
CLOSE-UP SURVEY REQUIREMENTS
Annex III
GUIDELINES FOR THE GAUGING OF THE VERTICALLY

CORRUGATED TRANSVERSE WATERTIGHT BULKHEAD
BETWEEN HOLDS NOS. 1 AND 2
1. Gauging is necessary to determine the general condition of the structure

and to define the extent of possible repairs and/or reinforcements of the
vertically corrugated transverse watertight bulkhead for verification of the
compliance with para. 2.1 of Supplement to Part II – Hull.
2. Taking into account the buckling model applied in a.m. para. 2.1 in the
evaluation of strength of the bulkhead, it is essential to determine the thick-
ness diminution at the critical levels shown in Figures 1 and 2.
3. The gauging is to be carried out at the levels as described below. To ade-
quately assess the scantlings of each individual vertical corrugation, each
corrugation flange, web, shedder plate and gusset plate within each of the
levels given below are to be gauged.
59
Level (a) Ships without lower stool (see Figure 1):
Locations:
– The mid-breadth of the corrugation flanges at approximately 200 mm above
the line of shedder plates;
– The middle of gusset plates between corrugation flanges, where fitted;
– The middle of the shedder plates;
– The mid-breadth of the corrugation webs at approximately 200 mm above
the line of shedder plates.
Level (b) Ships with lower stool (see Figure 2):
Locations:
– The mid-breadth of the corrugation flanges at approximately 200 mm above
the line of shedder plates;
– The middle of gusset plates between corrugation flanges, where fitted;
– The middle of the shedder plates;
– The mid-breadth of the corrugation webs at approximately 200 mm above
the line of shedder plates.
Level (c) Ships with or without lower stool (see Figures 1 and 2):
Locations:
– The mid-breadth of the corrugation flanges and webs at about the mid-height
of the corrugation.
4. Where the thickness changes within the horizontal levels, the thinner plate
is to be gauged.
5. Steel renewal/and or reinforcement is to comply with a.m. para. 2.1.
Figure 1
60
Figure 2
Annex IV
SHIP TYPE AND ENHANCED SURVEY PROGRAMME (ESP)

NOTATIONS
Bulk Carrier
The ship type notation BULK CARRIER, or equivalent, and the notation ESP
shall be assigned to sea going self-propelled single deck ships with a double bot-
tom, hopper side tanks and topside tanks and with single or double side skin con-
struction and intended for the carriage of dry cargoes in bulk. Typical midship sec-
tions are given in Figure 1.
Bulk carrier of single side skin construction means a bulk carrier where one or
more cargo holds are bound by the side shell only or by two watertight boundaries,
one of which is the side shell, which are:
a) less than 760 mm apart in bulk carriers, the keels of which are laid or which
are at a similar stage of construction before 1 January 2000.
b) less than 100 mm apart in bulk carriers, the keels of which are laid or which
are at a similar stage of construction on or after 1 January 2000.
Figure 1
61
Ore Carrier
The ship type notation ORE CARRIER, or equivalent, and the notation ESP
shall be assigned to sea going self-propelled single deck ships having two longitu-
dinal bulkheads and a double bottom throughout the cargo region and intended for
the carriage of ore cargoes in the centre holds only. A typical midship section is
given in Figure 2.
Figure 2
Combination Carrier
1. “Combination carrier” is a general term applied to ships intended for the

carriage of both oil and dry cargoes in bulk; these cargoes are not carried
simultaneously, with the exception of oil retained in slop tanks. The ship
types defined in .2 and .3 below shall be considered to be combination car-
riers.
2. The ship type notation ORE CARRIER/CRUDE OIL TANKER, or
equivalent, and the notation ESP shall be assigned to sea going self-
propelled single deck ships having two longitudinal bulkheads and a double
bottom throughout the cargo region and intended for the carriage of ore
cargoes in the centre holds or of oil cargoes in centre holds and wing tanks.
Typical midship sections are given in Figure 3.
Figure 3
62
3. The ship type notation CRUDE OIL TANKER/BULK/ORE CARRIER
(OBO), or equivalent, and the notation ESP shall be assigned to single
deck ships of double skin construction, with a double bottom, hopper side
tanks and topside tanks fitted below the upper deck, and intended for the
carriage of oil or dry cargoes, including ore, in bulk. A typical midship sec-
tion is given in Figure 4.
Figure 4
Annex V
ADDITIONAL ANNUAL SURVEY REQUIREMENTS FOR THE
FOREMOST CARGO HOLD OF SHIPS SUBJECT TO SOLAS XII/9.1
1 General
1.1 In the case of bulk carrier over 5 years of age, the annual survey should in-
clude, in addition to the requirements of the annual surveys prescribed in chapter 2
of the Publication No 39/P, an examination of the following items:
2 Extent of survey
2.1 For bulk carriers of 5 –15 years of age:
a) An overall survey of the foremost cargo hold, including close-up survey
of sufficient extent, minimum 25% of frames, should be carried out to
establish the condition of:
– shell frames including their upper and lower attachments, adjacent
shell plating, and transverse bulkheads;
– areas found as suspect areas at the previous class renewal survey.
b) Where considered necessary by the surveyor as a result of the overall
and close-up survey as described in a) above, the survey should be ex-
cent shell plating of the cargo hold.
63
2.2 For bulk carriers exceeding 15 years of age:
a) An overall survey of the foremost cargo hold, including close-up survey
should be carried out to establish the condition of:
– All shell frames including their upper and lower end attachments,
adjacent shell plating, and transverse bulkheads
– Areas found as suspect areas at the previous class renewal survey.
3 Extent of thickness measurement
3.1 Thickness measurement should be carried out to an extent sufficient to de-
termine both general and local corrosion levels at areas subject to close-up survey,
as described in 2.1(a) and 2.2(a) above.
The minimum requirement for thickness measurements are areas found as sus-
pect areas at the previous class renewal survey.
Where substantial corrosion is found, the extent of thickness measurements
should be increased in accordance with the requirements of Table VIII.
The thickness measurement may be dispensed with provided the surveyor is
satisfied by the close-up survey, there is no structural diminution and the protective
coating where applied remains effective.
4 Special consideration
4.1 Where the protective coating in the foremost cargo hold, as defined in the
Note below, is found to be in GOOD condition, the extent of close-up surveys and
thickness measurements may be specially considered.
Note:
At the time of new construction, all internal and external surfaces of hatch coamings and hatch cov-
ers, and all internal surfaces of the cargo holds, excluding the flat tank top areas and the hopper tanks
sloping plating approximately 300 mm below the side shell frame and brackets, are to have an effi-
cient protective coating (epoxy coating or equivalent) applied in accordance with the manufacturer’s
recommendation. In the selection of coating due consideration is to be given by the Owner to intended
cargo conditions expected in service.
4.2 For existing bulk carriers, where Owners may elect to coat or recoat cargo
holds as noted above, consideration may be given to the extent of the close-up sur-
veys and thickness measurement. Prior to the coating of cargo holds of existing ves-
sel, scantlings are to be ascertained in the presence of a Surveyor.
64

Bulk Carrier Surveys

Uploaded by

Copyright:

Available Formats

Bulk Carrier Surveys

Uploaded by

Document Information

Original Title

Copyright

Available Formats

Share this document

Share or Embed Document

Sharing Options

Did you find this document useful?

Is this content inappropriate?

Copyright:

Available Formats

Bulk Carrier Surveys

Uploaded by

Copyright:

Available Formats

RULES

PUBLICATION NO. 39/P

HULL SURVEYS OF BULK CARRIERS

Publications P (Additional Rule Requirements), issued by Polski Rejestr Statków,

PUBLICATION NO. 39/P

HULL SURVEYS OF BULK CARRIERS

© Copyright by Polski Rejestr Statków, 2001

1.1.3 The requirements contain the minimum extent of examination, thickness

1.3.2 Additionally, when a survey results in the identification of substantial corro-

2.2.2 Examination of the Hull

2.2.3.4 Random checking of the satisfactory operation of mechanically operated

2.2.4.2 For bulk carrier over 15 years of age:

manufacturer’s recommendation. In the selection of coating due consideration is to be given by

2.2.5.1 Examination of ballast tanks when required as a consequence of the re-

3.2.2.2 Cargo Holds

3.2.2.3 Extent of Thickness Measurement

3.2.3 Bulk Carriers 10 – 15 Years of Age, the following is to apply

3.2.4 Bulk Carriers exceeding 15 years of age, the following is to apply

4 CLASS RENEWAL SURVEY

4.2.1.1 The Class Renewal Survey is to include, in addition to the requirements

4.2.1.4 The survey extent of combined ballast/cargo holds is to be evaluated

4.2.2 Dry Dock Survey

4.2.2.1 A survey in dry dock is to be a part of the Class Renewal Survey.

4.2.3 Tank Protection

4.2.3.1 Where provided, the condition of coating or corrosion prevention of bal-

4.2.4.1 A thorough inspection of the items listed in 2.2.3 is to be carried out.

4.2.4.2 Checking of the satisfactory operation of all mechanically operated hatch

4.2.4.3 Checking the effectiveness of sealing arrangements of all hatch covers by

4.3.2 Each Class Renewal Survey is to include a close-up examination of sufficient

4.4.1 The minimum requirements for thickness measurements at Class Renewal

4.5 Extent of Tank Testing

5.1 Survey Programme

5.1.3 The submitted Survey Programme is to account for and comply, as

5.2 Conditions for Survey

5.2.4 Sufficient illumination is to be provided to reveal significant corrosion, de-

5.3 Access to Structures

5.4 Equipment for Survey

5.5 Survey at Sea or at Anchorage

5.5.2 A communication system is to be arranged between the survey party in the

6.2 Survey Report File

6.2.1 A Survey Report File is to be a part of the documentation on board consist-

6.3 Supporting Documents

6.3.1 The following additional documentation is to be available on board:

6.4.1 Prior to inspection, the Surveyor is to examine the completeness of the

7.3.1 A thickness measurement report is to be prepared and submitted to PRS. The

Ship’s name .......................................

OWNER’S INSPECTION REPORT – Structural condition

For tank/hold No. ………

Bottom: ................................ Long. bhd.: .........................

Elements Cracks Buckles Corrosion Coating Pitting Modification

Repairs carried out due to:*)

Thickness measurements carried out, dates:

Outstanding conditions of class:

*) Repairs are to be surveyed by PRS’ Surveyor

Date of inspection: ......................................................................................................

Inspected by: ..............................................................................................................

PRINCIPLES FOR PLANNING DOCUMENT

2 Procedure for Certification

2.1 Submission of Documents: