Join Date: Dec 2006
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The last one,
"By the time I add up the pod, batteries and a genset, I'm approaching over budget. I am told by local marine shop that I can have a Yanmar 2 or 3 cylinder installed for about $8500. Does that sound like a reasonable repower cost?"
If what you need is a system 3000, you'll spend about $5,500.00 on motor, installation and batteries. What you spend beyond that could be anywhere from $2K to $10K depending on how elaborate you want to get. Keep in mind that a generator will also be handy for running power for other house power needs.
"I want powered cruising to be available for a couple of days, like on the ICW during bad weather."
The motor draws 3800 watts under full continuous (max cruise) power. Charging the batteries via a genset, or by using an AC generator via a battery charger would enable you to cruise under continuous power. Of course we haven't mentioned the use of solar, Wind gens, or the regenerative use of the motor itself under sail.
"Those are good questions on how the shaft can turn and not leak back into a fully submerged motor eventually."
Again, this is an issue that has been thought through completely and explained earlier. I would be happy to answer any questions about this in detail on a one to one basis.
I hope that this helps!