John,
Disclosure: I represent Electric Yacht.
Eric's posting is right on with regard to regen. The new systems from any reputable system vendor today will do regeneration but the limit is the ability of the boat to get to a speed that the regen is valuable. For the regeneration from a 30 foot boat will be about 50 watts at 5 knots and about 100 watts at 6 knots. With a larger boat the ability to provide enough power through regen for house use is effective. For a log range cuiser at the higher hull speed regen will be valuable as propulsion power replacement - longer distance sailing at 7 plus knots will put a usable amount of power into the batteries. I would always recpomend solar and wind combined to make a total solution.
In the hybrid diesel electric world we are experiening a closer to 2 hours of diesel propulsion while turning the electric motor generating power to replace about 1 hour of electric propulsion at 4 to 5 knots. These numbers are all dependent on the ability of the diesel to push the boat and drive additional power into the generation side of the electric motor.
The Catalina 30 is a great boat to move to an electric inboard platform. We have done about 4 of them in the last two years and I know other vendors have good success them. The biggest benefit I see to the conversion of a Catalina 30 is the vast improvement in the enjoyment value of being below deck and not having an ICE installed in your galley/living area.
We sell the electric outboards also but I am not excited about the look of an outboard hanging off the stern of a Catalina 30
Good luck with your project.
Mike Gunning - Electric Yacht of Southern California
--- In electricboats@yahoogroups.com, "John" <thistle411@...> wrote:
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> Regarding charging systems: I did not see regeneration mentioned. Electric Yacht's system provides for that.
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> The electric powered 42 foot catamaran that Lagoon built a few of used re-gen, claiming that 2 hours of sailing, with the prop being spun by passing water, would provide charging used by one hour motoring. Ie: Motor out an hour, sail four hours, motor in an hour,= zero amps used.
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> Here in Seattle, I know of an older Columbia 30 footer, that sounds a lot like your project. He's using the Electric Yacht system with re-gen and lithium batteries.
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