Signal Flags.

	A	I have a diver down, keep well clear at slow speed.
	B	I am taking in, or discharging, or carrying, dangerous goods.
	C	Yes. (Affirmative).
	D	Keep clear of me, I am manoeuvring with difficulty.
	E	I am altering my course to starboard.
	F	I am disabled, communicate with me.
	G	I require a pilot. When made by fishing vessels operating in close proximity on the fishing grounds it means: 'I am hauling nets'.
	H	I have a pilot on board.
	I	I am altering my course to port.
	J	I am on fire and have dangerous cargo on board; keep well clear of me.
	K	I wish to communicate with you.
	L	You should stop your vessel instantly.
	M	My vessel is stopped and making no way through the water.
	N	No. (Negative).
	O	Man overboard.
	P	In harbour hoisted at the foremast head, Blue Peter. 'All persons should report on board as the vessel is about to proceed to sea'. At sea it may be used by a fishing vessel to mean, 'My nets have come fast on an obstruction'.
	Q	My vessel is healthy and I request free practique.
	R
	S	My engines are going astern.
	T	Keep clear of me, I am engaged in pair trawling.
	U	You are running into danger.
	V	I require assistance.
	W	I require medical assistance.
	X	Stop carrying out your intentions and watch for my signals.
	Y	I am dragging my anchor.
	Z	I require a tug. When made by fishing vessels operating in close proximity on the fishing grounds it means: 'I am shooting nets'.
	1st.		2nd.		3rd.	Substitutes or repeaters.

	One.		Two.		Three.
	Four.		Five.		Six.
	Seven.		Eight.		Nine.
	Zero.		Answering pendant.

Links to other relevant information.     Signal Flags 2.      Morse.      Phonetic Alphabet.     
Distress calls.      Sound signals.