A – Diver below (when stationary); I am undergoing a speed trial

B – I am taking on or discharging explosives

C – (affirmative)

D – keep clear of me, I am manoevering with difficulty

E – I am altering my course to starboard

F – I am disabled, communicate with me

G – I require a pilot

H – I have a pilot on board

I – I am altering my course to port

J – I am going to send a message by semaphore

K – you should stop your vessel instantly

L – you should stop, I have something important to communicate

M – I have a doctor on board

N – no (negative)

O – man overboard

P – the Blue Peter – all aboard, vessel is about to proceed sea. (At sea) your lights are out or burning badly

Q – my vessel is healthy and I request free practique

R – the way is off my ship. You may feel you way past me

S – my engines are going full speed astern

T – do not pass ahead of me

U – you are standing into danger

V – I require assistance (not distress)

W – I require medical assistance

X – stop carrying out your intentions and watch for my signals

Y – I am carrying mails

Z – to be used to address or call shore stations

Answering Pennant

Code and answering pennant.

Numeric Pennants











Substitute Pennants

substitute 1;

substitute 2;

substitute 3;


N + C – I am in distress

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