I have a diver down; keep well clear at slow speed
I am taking in or discharging or carrying dangerous goods
Keep clear of me; I am maneuvering with difficulty
I am altering my course to starboard
I am disabled; communicate with me
I require a pilot. By fishing vessels near fishing grounds: "I am hauling nets."
I have a pilot on board
I am altering my course to port
I am on fire and have dangerous cargo on board: keep well clear of me
I wish to communicate with you
In harbour: "The ship is quarantined." At sea: "You should stop your vessel instantly."
My vessel is stopped and making no way through the water.
"Man overboard." (often attached to the man overboard pole on boats). With a sinister hoist, the semaphore flag.
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."
My vessel is 'healthy' and I request free pratique
(No ICS meaning as single flag)
Engines Going Astern
I am operating astern propulsion
You are running into danger.
I require medical assistance
Stop carrying out your intentions and watch for my signals
I am dragging my anchor
"I require a tug." By fishing vessels near fishing grounds: "I am shooting nets."