Flags & fog

A · Alfa

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 manoeuvring with difficulty.

G · Golf

I require a pilot. (Fishing vessels: I am hauling nets.)

H · Hotel

I have a pilot on board.

O · Oscar

Man overboard.

P · Papa

In harbour: all persons report on board — vessel is about to proceed to sea. (Blue Peter.)

Q · Quebec

My vessel is healthy and I request free pratique.

U · Uniform

You are running into danger.

V · Victor

I require assistance.

W · Whiskey

I require medical assistance.

K · Kilo

I wish to communicate with you.

L · Lima

You should stop your vessel instantly.

N · November

No (negative).

Y · Yankee

I am dragging my anchor.