I'm not an EE, by any means, nor am I offering a "social experience" as you put it- but being in the marine business for the better part of the last 2 decades, I've seen and discussed ideas like this many times. I insure boats, and as a byproduct, spend a lot of time with surveyors, in various yards, and with marine architects and the like; I've never heard of a feasible electric only propulsion system for a displacement/semi-displacement trawler.
D/E- yes.
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Peter- Marine Insurance Guru at Novamar Insurance Group (206-350-5051) & tuna fishing addict!
1989 52' PT Overseas yachtfisher
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