Although I am confounded to agree with you Eiron, I do not think that
Masefield was imagining my 85hp engine along with 'the winds song' when
he wrote Sea Fever.

I just need something with enough kick but easy enough to remove from
an otherwise easily nickable position e.g an open top speedboat. But
realistically also easy to lock down so that it doesn't go overboard.

Wally is quite correct about needing your wits about you though. Some
vessels announce their movements by tooting their horns in assorted
patterns so ears clear where possible. That said, I do own a pair of
the etymotics.

But back to the point in hand though. Is 3 watts per channel really
the measly best I can expect from a light battery operated speaker
pair? It doesn't seem credible. There has to be an arguement for that
kind of portability of system.

How are people supposed to really annoy each other on camp sites and
the beach if there are no brazenly loud but portable setups?