Gdavid
Guru
I agree with the opinion that it is tasteless as a guest to complain about such things. That said I am curious if it is a combination of engine noise along with the slow speed that feels odd. In my experience the 34 relies heavily on the floor covering (carpet tiles on ours) to dampen the noise of the perkins and above 1600-1800 rpm the turbo noise starts becoming very pronounced, on a planning boats you expect a lot of engine noise at cruise speed but the noise increase relative to a small speed increase is low reward. If you typically take guests on a cruise to nowhere, perhaps slowing down so you can converse easily would be an improvement, you aren't going to cover much more ground at 8 knots than 6 and if you don't have a destination you need to reach it may not matter. Some engine room sound insulation and tightening up the fit of the hatch boards will be in the future for us but for this year I think a throw rug will suffice.