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    Sound Signals

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    Haitham Alcheikh Dib
    The document outlines various sound signals used by vessels to communicate navigational intentions and operational status. One short blast indicates a course alteration to starboard, while two short blasts indicates a course change to port. Three short blasts means the vessel is operating astern propulsion. Five short blasts is a signal of failure to understand another vessel's intentions. Long sound patterns indicate overtaking maneuvers. In restricted visibility, vessels use prolonged blasts to indicate if they are making way, stopped but not anchored, or constrained by draft among other statuses.

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    Sound Signals

    Uploaded by

    Haitham Alcheikh Dib
    205 views2 pages
    The document outlines various sound signals used by vessels to communicate navigational intentions and operational status. One short blast indicates a course alteration to starboard, while two short blasts indicates a course change to port. Three short blasts means the vessel is operating astern propulsion. Five short blasts is a signal of failure to understand another vessel's intentions. Long sound patterns indicate overtaking maneuvers. In restricted visibility, vessels use prolonged blasts to indicate if they are making way, stopped but not anchored, or constrained by draft among other statuses.

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    The document outlines various sound signals used by vessels to communicate navigational intentions and operational status. One short blast indicates a course alteration to starboard, while two short blasts indicates a course change to port. Three short blasts means the vessel is operating astern propulsion. Five short blasts is a signal of failure to understand another vessel's intentions. Long sound patterns indicate overtaking maneuvers. In restricted visibility, vessels use prolonged blasts to indicate if they are making way, stopped but not anchored, or constrained by draft among other statuses.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    205 views2 pages

    Sound Signals

    Uploaded by

    Haitham Alcheikh Dib
    The document outlines various sound signals used by vessels to communicate navigational intentions and operational status. One short blast indicates a course alteration to starboard, while two short blasts indicates a course change to port. Three short blasts means the vessel is operating astern propulsion. Five short blasts is a signal of failure to understand another vessel's intentions. Long sound patterns indicate overtaking maneuvers. In restricted visibility, vessels use prolonged blasts to indicate if they are making way, stopped but not anchored, or constrained by draft among other statuses.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    MANOEUVRING & WARNING

    SOUND SIGNALS

    SHORT BLAST - 1 SECOND PROLONGED BLAST - 4 TO 6 SECONDS

    "I am altering my
    "I am altering my
    course to
    course to port"
    starboard"

    ONE SHORT TWO SHORT


    BLAST BLASTS

    ?!
    "I am operating "I fail to
    astern understand your
    propulsion" intentions"
    THREE SHORT BLASTS FIVE SHORT BLASTS

    "I intend to "I intend to


    overtake you on overtake you on
    your starboard your port side"
    side"
    LONG LONG SHORT LONG LONG SHORT SHORT

    "I agree with your When nearing a


    intention to bend where
    overtake me" vessels may be
    obscured
    LONG SHORT LONG SHORT
    ONE LONG BLAST

    hello@getlostpowerboattraining.com
    SOUND SIGNALS IN
    RESTRICTED VISIBILITY
    IN OR NEAR AN AREA OF RESTRICTED VISIBILITY
    WHETHER BY DAY OR NIGHT

    A power driven A power driven


    vessel making vessel underway
    way but stopped

    ONE LONG BLAST TWO LONG BLASTS

    Not Under Command Restricted in Ability Constrained by Draft

    Fishing Sailing Towing

    ONE LONG AND TWO SHORT BLASTS

    Vessel at anchor Last vessel in a manned tow

    BELL FOR 5 PLUS GONG ONE LONG AND THREE


    SECONDS IF OVER SHORT
    EVERY 100M
    MINUTE

    Vessel aground Pilot vessel on duty


    Plus a gong if
    over 100m

    THREE STROKES OF THE FOUR SHORT BLASTS


    BELL EITHER SIDE OF
    ANCHOR BELL

    hello@getlostpowerboattraining.com

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