I do not require assistance.
The vessel I have collided with has sunk.
The damage can be repaired at sea.
The fire is gaining.
I can get the fire under control without assistance.
Leak is dangerous.
The leak is under control.
It is dangerous to approach close to my vessel.
Proceed with great caution, hostile aircraft sighted.
You are running into danger.
I am proceeding to the position of the accident.
I am undergoing speed trials.
Hurricane is approaching. You should take appropriate precautions.
I am entering a zone of restricted visibility.