If only that was true, the majority of "powerboats" do come with sound shields and I have struggled to work on these units with these shields in place until I give up and remove the whole thing. Alot of sail boats that do actually come with generators try and save space and use units that run at 3600 RPM and are either installed low down in a bilge / keel area or because of the high RPM's would be impossible to have running while on board without some kind of shield. Large motor yachts have units that run slower at 1200 RPM and come with various water traps / seperators / under water gas outlets etc etc that are not seen on sail boats. How much noise do you hear from freighter generators but then again how often do you see one of them anchored next to a blow boat, they now better and stay away from those halyards. Its funny how a blow boater loves the wind in their sails cruising along at a ridiculous angle and then complain very loudly when they get rocked a bit by a passing power boat. It is a bit like a dog loves to stick its head out the window of a speeding car but goes crazy when you blow in its face. Bamboo, maybe you could tell me what you mean by Irish drinking music as I am Gaelic and we just drink without the need for any music. ....and I thought you were a skipper, must be the only one working at Sailfish as I only see mates and boat washers working there plus the valet's. There are a lot of boat owners and potential boat owners who walk those docks and I find it costs nothing to be courteous especialy if you may be looking for a new job in the future.