Flag Signals
	A - Alpha	I have a diver down; keep well clear at slow speed.
	B - Bravo	I am taking in, or discharging, or carrying dangerous goods.
	C - Charlie	Yes (affirmative).
	D - Delta	Keep clear of me; I am maneuvering with difficulty.
	E - Echo	I am altering my course to starboard.
	F - Foxtrot	I am disabled; communicate with me.
	G - Golf	I require a pilot. When made by fishing vessels in close proximity on the fishing grounds it means: "I am hauling nets."
	H - Hotel	I have a pilot on board.
	I - India	I am altering my course to port.
	J - Juliette	I am on fire and have dangerous cargo on board, stay clear.
	K - Kilo	I wish to communicate with you.
	L - Lima	You should stop your vessel immediately.
	M - Mike	My vessel is stopped and making no way through the water.
	N - November	No (negative).
	O - Oscar	Man overboard.
	P - Papa	In harbor,—all persons should report on board as the vessel is about to proceed to sea. At sea,—May be used by fishermen to mean: "My nets have come fast on an obstruction." It may also be used as a sound to mean: "I require a pilot."
	Q - Quebec	My vessel is healthy and I request free practique (clearance).
	R - Romeo
	S - Sierra	I am operating astern propulsion
	T - Tango	Keep clear of me; I am engaged in pair trawling.
	U - Uniform	You are running into danger.
	V - Victor	I require assistance.
	W - Whiskey	I require medical assistance.
	X - Xray	Stop carrying out your intentions and watch for my signals.
	Y - Yankee	I am dragging my anchor.
	Z - Zulu	I require a tug.

Two Flag Signals
AC - I am abandoning my vessel.		LO - I am not in my correct position; used by a light vessel.		RU - Keep clear of me; I am maneuvering with difficulty.
AN - I need a doctor.		NC - I am in distress and require immediate assistance.		SO - You should stop your vessel instantly.
BR - I require a helicopter.		PD - Your navigation lights are not visible.		UM - The harbor is closed to traffic.
CD - I require assistance in the nature of ...		PP - Keep well clear of me.		UP - Permission to enter harbor is urgently requested. I have an emergency.
DV - I am drifting.		QD - I am going ahead.		YU - I am going to communicate with your station by means of the International Code of Signals.
EF - SOS/MAYDAY has been canceled.		QT - You should not anchor. You are going to foul my anchor.		FA - Will you give me my position?
QQ - I require health clearance.		GW - Man overboard. Please take action to pick him up.		QU - Anchoring is prohibited.
ZL - Your signal has been received but not understood.		JL - You are running the risk of going aground.		QX - I request permission to anchor.
N + CI am in distress.

Three Flag Signals

ZD1 - Please report me to the Coast Guard, New York ZD2 - Please report me to Lloyds, London.