17ft Dory, rigid raider type.
fine when unlaiden, but with 4 divers plus kit, she weighs about 1.5 tonnes!
she is fine when its just passengers, but with all the diver gear, that adds another 250kgs!
she made 42 knotts yesterday, - eventually. but for most of the trip she was 20 knotts. and not quite on the plane. but a wind behind the boat just was enough to make thie difference, then she was flying along.
speed confirmed by two GPS. i have a rev counter ready to be fitted next week, so sadly i cannot tell you the revs, but she was not over reved