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Old 12-13-2020, 07:41 PM   #3
Nomad Willy
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City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
Sounds like you should be cruising at 2800rpm. That’s 1000 rpm down from rated. You like many other trawler skippers need to stop thinking the engine is going to self-destruct.

Diesel engines are noisy.
Diesel engines are noisy.

If your engines are in good working order and propped correctly you should be able to run at 3000 to 3,200rpm all day long. But check w your engine people (Yanmar I assume) ... but first you need to get 3800rpm loaded w full fuel ect at WOT.
Once you achieve that consult Yanmar (or whomever) to learn what the maximum continuous power rpm is. Then given good maintenance you only need to not exceed that.
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Eric

North Western Washington State USA
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