I have a 1973 Cal 29 that I own with a partner. It has a 1 cyl Farymann 12 hp diesel that works, but needs lots of attention. We both agree that we should replace it to get more power and less vibration and noise. I would like to put in electric for noise, smell and maintenance reasons. His main concern is range so he is leaning towards a diesel. We agree that if we go electric, it should be to be able to motor from Provincetown through the cape cod canal, at about 5 kts, about 30 nm in total, and there is often a good breeze on the nose. Electric Vehicle of America did a proposal for me that said it would take about 60 amps to drive the boat at 5 kts (using their EY QuieTorque ibl180 motor). That said, even a 400 ah battery bank would not get us through the canal (assuming 80% DOD). I was hoping to avoid the extra money, weight and maintenance for a genset, but it seems that this is the only way to make this type of trip. (For typical daysailing off the mooring, I was considering the Airbreeze Marine from Hamilton Ferris, which seems like it would be more than sufficient).
So it will come down to the trade off on cost between another diesel and an electric with a genset and my guess is that the payback on the electric/genset combo would be pretty long.
Any advice on design, wind turbines, gensets and vendors in general would be appreciated.
David
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