Maritime Communications GMDSS

7/24/2019 Maritime Communications GMDSS

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MARITIME COMMUNICATIONS

International Code of Signals

(Signaling Instructions)



Signaling Instructions

The purpose of the International Code ofSignals is to provide ways and means ofcommunication in situations related essentially tosafety of navigation and persons especially

when language diculties arise! In thepreparation of the Code account "as ta#en of thefact that "ide application of radiotelephony andradiotelegraphy can pro$ide si%ple and e&ecti$e

%eans of co%%unication in plain language"hene$er language di'culties do not eist!



Signaling InstructionsINTERNATIONA CO!E O" SI#NAS




The %ethods of signaling "hich %ay e used are*

a$"lag signaling

%$"lashing light signalingc$Sound signaling

d$&oice over a loud hailer

e$Radiotelegraphy

f$Radiotelephony

g$'orse signaling %y hand (ags or arms



"lag signaling +e,nition of

A set of signal -ags consist of t"enty.sialphaetical -ags ten nu%eral pennants threesustitutes and the ans"ering pennant!




Signaling InstructionsSI#NA "A#S



Signaling InstructionsTa%le of 'orse signaling %y hand (ags or arms



Signaling Instructions The use of su%stitutes is to ena%le the same signal (ag either

alphaetical -ag or nu%eral pennant to %e repeated one or more times

in the same group in case only one set of -ags is carried on oard!

/)The )rst su%stitute always repeats the uppermost signal (ag ofthat class of -ags "hich i%%ediately precedes the sustitute!

0) The second su%stitute always repeats the second

1) The third su%stitute repeats the third signal (ag counting fro%

the top of that class of -ags "hich i%%ediately precedes the%!

No sustitute can e$er e used %ore than once in the sa%e group! Theans"ering pennant "hen used as a deci%al point is to e disregarded indeter%ining "hich sustitute to use!



Signaling Instructions'ORSE S*'+OS



Signaling Instructionsetter Spelling Ta%le ,-.ONETIC A-.A+ET$



Signaling InstructionsSingle etter Signals ,-.ONETIC A-.A+ET

!E"INITION$

A . +i$er elo" ("hen stationary)2 I a% undergoinga speed trial+ . I a% ta#ing on or discharging eplosi$es

C . (a'r%ati$e)! . 3eep clear of %e I a% %aneu$ering "ithdi'cultyE . I a% altering %y course to staroard

" . I a% disaled co%%unicate "ith %e# . I re4uire a pilot. . I ha$e a pilot on oardI . I a% altering %y course to port




!E"INITION$

/ . I a% going to send a %essage y se%aphore0 . 5ou should stop your $essel instantly . 5ou should stop I ha$e so%ething i%portant to

co%%unicate' . I ha$e a doctor on oardN . No (negati$e)O . Man o$eroard

- . The Blue Peter . all aoard $essel is aout toproceed sea! (At sea) your lights are out or urningadly1 . %y $essel is healthy and I re4uest free practi4ueR . the "ay is o& %y ship! 5ou %ay feel you "aypast %e




!E"INITION$

S . %y engines are going full speed asternT . do not pass ahead of %e2 . you are standing into danger

& . I re4uire assistance (not distress)3 . I re4uire %edical assistance4 . stop carrying out your intentions and "atch for%y signals

* . I a% carrying %ails5 . to e used to address or call shore stations



Than#s7

Su%mitted %y6 !7C INOSANTO8Theus /ean T9

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Maritime Communications GMDSS

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