Aquafax International Code Flags - Letters

International maritime signal flags refers to various flags used to communicate with ships. The principal system of flags and associated codes is the International Code of Signals.

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