Diver down; keep well clear and slow

I am taking in, discharging, or carrying dangerous goods

Yes (affirmative)

Keep clear of me; I am manoeuvring with difficulty

I am altering my course to starboard

I am disabled; communicate with me

I require a pilot

I have a pilot on board

I am altering my course to port

I am on fire and have dangerous cargo; keep well clear

I wish to communicate with you

You should stop your vessel immediately

My vessel is stopped and making no way through the water

No (negative)

Man overboard

In harbour: all persons should report on board as the vessel is about to proceed to sea

My vessel is healthy and I request free pratique

Reserved for national use / special meanings

I am operating astern propulsion

Keep clear of me; I am engaged in pair trawling

You are running into danger

I require assistance

I require medical assistance

Stop carrying out your intentions and watch for my signals

I am dragging my anchor

I require a tug