Loxodrome

About

I have a diver down; keep well clear at slow speed.

Alpha

I am taking in or discharging or carrying dangerous goods

Bravo

Affirmative Yes

Charlie

Keep Clear, I am maneuvering with difficulty.

Delta

Altering course to starboard.

Echo

I am disabled, please communicate.

Foxtrot

Astronavigation

I require a pilot. By fishing vessels near fishing grounds: 'I am hauling nets.'

Golf

I have a pilot on board.

Hotel

I am altering my course to port.

India

I am on fire and have dangerous cargo on board: keep well clear of me. or I am leaking dangerous cargo

Juliett

I wish to communicate with you.

Kilo

You should stop your vessel instantly.

Lima

Routeplotter

My vessel is stopped and making no way through the water.

Mike

Negative

November

Man overboard.(often attached to the man overboard pole on boats).
With a sinister hoist, the semaphore flag.

Oscar

The Blue Peter. In harbour: 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.

Papa

My vessel is 'healthy' and I request free pratique.

Quebec

(No ICS meaning as a single flag)

Romeo

Log in

I am operating astern propulsion.

Sierra

Keep clear of me I am engaged in pair trawling.

Tango

You are running into danger.

Uniform

I require assistance.

Victor

I require medical assistance.

Whiskey

Stop carrying out your intentions and watch for my signals.

X-ray

Messages

I am dragging my anchor.

Yankee

I require a tug. By fishing vessels near fishing grounds: 'I am shooting nets.'

Zulu

This and following used as numbers to complement other signals.

Nadazero

Unaone

Bissotwo

Terratree

Kartefour

Pentafive

Soxisix

Setteseven

Oktoeight

Novenine

Used to repeat the first flag of a hoist later within the same hoist.
This and the other two substitutes allows any four letter or number combination to be sent using only one set of flags.

Substitute1

Used to repeat the second flag of a hoist later within the same hoist.

Substitute2

Used to repeat the third flag of a hoist later within the same hoist.

Substitute3

At the dip (about half-way up the halyard): Ready to receive message
Close up: Message has been received and understood (the flag is then hauled back at the dip to receive the next hoist)
Hauled down: Signals end of message. With numerals: Decimal point By a warship: When flown over a hoist, indicates the message is to be read according to the ICS.

Code Flag

Release 5.1.2