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Old 10-12-2020, 07:43 AM   #26
rslifkin
Guru
 
City: Rochester, NY
Vessel Name: Hour Glass
Vessel Model: Chris Craft 381 Catalina
Join Date: Aug 2019
Posts: 7,550
Quote:
Originally Posted by Art View Post
Traveling at <90% of hull speed, especially by shutting one engine down and running on the other, should amaze you regarding fuel savings... compared to 100% hull speed running either one or both engines.
This works on gassers, but the difference is much smaller with diesels, as they lose far less efficiency at light load.

Regardless, too far below hull speed on a boat that's meant to go fast can be a problem handling-wise in rough water. Even worse with 1 engine shut down and 1 rudder not having prop wash over it.
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