Changes

For a production boat it’s feasible to do a spectrum analysis and design suitable sound attenuation and test it. For a bespoke boat this is unlikely to be feasible. Thus a good cost-effective approach is to focus on reducing sound transmission in a target range such as 1,000-2,500 Hz (wavelengths of 13.5 to 5.4-in or 34.3 to 13.72 cm).

Acoustical isolation works by converting sound waves into heat that is then dissipated. Some methods of isolation are: