We have seen a growing interest in cruising catamaran conversions and they are well suited for electric. Of the size you are looking at, you would reduce the normally three diesel (two motors and a genset) to one diesel and two electric motors. The cost to repower is high because there are two motors but the return to the boat owner is just as high. It takes about twice the power to push a catamaran due to the fact it has significant wetted with two hulls. Often catamarans were overpowered to allow one diesel to drive the boat at the theoretical hull speed. This could be less of an issue but still a good practice. Weight is a big issue with catamarans and you want to keep weight down so we normally see a modest battery pack and the use of a genset to handle greater power storage needs in addition to house needs. Finally the catamaran allows a build out of a larger solar array and can just about triple the effective placement of solar than a monohull without making the boat look like a solar farm.
Good luck with the search.
Mike Electric Yachts of Southern California/Pacific
Posted by: mike@electricyachtssocal.com
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