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. (Originally used by the Royal Navy specifically for military explosives.)
C	Charlie		Yes. Template:Ref
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 operating 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	Juliet		I am on fire and have dangerous cargo on board: keep well clear of me, or I am leaking dangerous cargo.
K	Kilo		I wish to communicate with you.
L	Lima		In harbor - The ship is under Quarantine. At sea - You should stop your vessel instantly.
M	Mike		My vessel is stopped and making no way through the water.
N	November		No. Template:Ref
O	Oscar		Man overboard (often attached to the man overboard pole on boats).
P	Papa		The Blue Peter. In harbor — All persons should report on board as the vessel is about to proceed to sea. At sea — It may be used by fishing vessels to mean: "My nets have come fast upon an obstruction".
Q	Quebec		My vessel is "healthy" and I request free pratique.
R	Romeo		No meaning in the flag code.
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. When made by fishing vessels operating in close proximity on the fishing grounds it means: "I am shooting nets".

* Template:Note N and C together (No and Yes) is used as a distress signal.

Type of flag	0	1	2	3	4	5	6	7	8	9
NATO flags
Pennants

Prompt	First substitute	Second substitute	Third substitute	Fourth substitute
NATO signales [modifika | edit source]
Code/answer (ANS)	Preparation (PREP)	Question (INT)	Negation (NEGAT)	Designation (DESIG)
Alter course (CORPEN)	Turn (TURN)	Screen (SCREEN)	Speed (SPEED)	Station (STATION)
Port (PORT)	Starboard (STBD)	Formation (FORM)	Division (DIV)	Squadron (SQUAD)
Group (FLOT)	Subdivision (SUBDIV)	Emergency (EMERG)

Template:Commonscat

• The flags and their meanings NOTE: Outdated meanings.
• Freeware to aid memorizing the flags from The Navy Patuxent Sailing Club
• Flags Fantastic - Nautical flags (A - Z & Pennant)
• La flag-alfabeto - signal flags used for the Esperanto language. Description: the flags for the esperanto letters with diacritical marks have the lighter color in the normal flag replaced with light green, which is not used in any normal flag.
• Signalman manual
• Nautical Flags Alphabet
• brief history of naval signals