I am interested in building an electric runabout and would like help on hull design. Here are the basic requirements:
Less than 30 feet in length, preferably 25'
Strip hull construction
Sufficient beam to accommodate two persons side by side, at least 3', prefer 4'
Sufficient stability to handle a broach in 3' chop or powerboat wake.
Prefer monohull.
Cruising speed above 10 knots.
Cruising duration 3 hours at 10 knots.
Would like to accomplish the above with less than 600 lbs LA batteries.
I understand the tradeoffs among battery chemistries, motor, and controller types.
What I want help with is hull design. The trade offs between length to beam ratio, drafts, and hull geometry. I have purchased plans for 20 to 30 foot canoes and Atkin's Sergeant Faunce utility. By increasing the freeboard and decking the canoes, I think I can handle the open water, but my real issue is how much must I increase the L/B ratio to overcome the 1.3xsq rt of waterline? I would rather not go as far as the guy in the Wye Island marathon who used a 50' rowing scull!
Any ideas or experience or can you refer me to some sites or literature. I have already scoured the web pretty thoroughly.
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