| |  | Alpha : diver below (when stationary); I am undergoing a speed trial |  |  | Bravo : I am taking on or discharging explosives |  |  | Charlie : affirmative |  |  | Delta : keep clear of me, I am maneuvering with difficulty |  |  | Echo : I am altering my course to starboard |  |  | Foxtrot : I am disabled, communicate with me |  |  | Golf : I require a pilot |  |  | Hotel : I have a pilot on board |  |  | India : I am altering my course to port | 
 | |  | Juliet : I am going to send a message by semaphore |  |  | Kilo : you should stop your vessel instantly |  |  | Lima : you should stop, I have something important to communicate |  |  | Mike : I have a doctor on board |  |  | November : no (negative) |  |  | Oscar : man overboard |  |  | Papa : all aboard, vessel is about to proceed sea. (At sea) your lights are out or burning badly |  |  | Quebec : my vessel is healthy and I request free practique |  |  | Romeo : the way is off my ship. You may feel you way past me | 
 | |  | Sierra : my engines are going full speed astern |  |  | Tango : do not pass ahead of me |  |  | Uniform : you are standing into danger |  |  | Victor : require assistance (not in distress) |  |  | Whiskey : I require medical assistance |  |  | X-ray : stop carrying out your intentions and watch for my signals |  |  | Yankee : I am carrying mail |  |  | Zulu : to be used to address or call shore stations | 
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