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Old 09-10-2016, 08:24 AM   #14
Ski in NC
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City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 5,454
Without doing a load study, most boats in the 43' class have something about 8kW. That should run just about everything at the same time. If you don't mind a little load management, you could go down to a six.

I have not heard of a modern 6kW marine unit having any trouble starting a marine air.

Regarding brands, just use the following criteria: Three cylinder, 1800rpm, direct drive, electronic volt regulator. No two cylinders, no belt drive, no capacitor exciter.
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