Thanks for the mention, Dan Gledhill. You’re welcome aboard anytime!
Try Seaduced, a 47ft catamaran which offers a dozen passengers a cruise up the west coast of the island through the clearest blue water you’re ever likely to see. There are pauses to see nautical wrecks and to swim with turtles, who do their bit for the tourist trade by sharing the water with snorkellers. Drinks are served on board and the food (courtesy of chef Jan) is excellent.