I believe it is something slightly softer than rocks that they were sat on, and there is probably little structural damage, though the reputation of the officer on watch at the time will surely be dented.

left hand down a bit it is Sir - wouldn't want to hit that buoy now would we.

What buoy is that?

That one over there, Sir, bobbing up and down - oh cripes!

Those of us old enough to remember 'The Navy Lark'will be able to - whats the sound version of visualise? audiolise? the voices.

Anne