I have a heavenly tins 27 which has a 30HP outboard mounted on the transom. This
doesn’t seem like a very good idea to me at all, turns the boat into a bit
of a rocking horse, so I’ve been looking into repowering options. I came across
electric motors and they definitely peaked my interest.
I have quite a few more links on the subject if you’re interested.
Environmental (more economical as the generator runs at optimum speed), noise, diesel
smell, lower maintenance, longer life span, more componentized for better weight
distribution, but mainly I’m too lazy haul in two diesel engines, sounds like
serious work to me, and of course I’m to cheep to pay someone to do it. This
is probably why the US navy uses this option.
Most people start looking at complete solutions like Solomon technologies which
is super expensive. But if you read some of the posts on the groups you’ll
see that some have got away with far cheaper solutions. Considering the cost of
the diesel engine is generally a 1/3 of the price of an installation I think it
may be comparable cost wise.
1. Use a trim tab solution with submersible electric motors (like trolling motors)
that can be raised from the cockpit. Take a look at www.lencomarine.com site for
an example of these.
This would entail two eteck type VDC motors, but besides the hoisting of diesel
engines, and the space, comes with all the installation issues you get with inboards.
With this option you could have two motors for better steering and put the generator
in the cockpit.
I initially discarded this idea cause I was looking at ICE engines and didn’t
want that much weight that high up and all that noise in the cockpit but now that
I’m typing this I’m realizing that with an electric motor this may well
be a viable option. There are some powerful electric outboards out there with Kort
nozzles and all the bit’s and bobs in-between out of the box it (about $4K
will find the link if you need it) www.outboardelectric.org.
According to the manufacturer this motor will push a 26ft sailboat (displacement
hull) of 8000lb 7.5mph. They don’t say what type of boat, I assume it’s
a mono hull.
9HP does not seem like enough power to me. Some people have taken ICE outboards,
taken the engine off and added one or two VDC motors inline to get a bigger engine.
All that said it is considerably cheaper to mount a outboard ICE in the cockpit
well. This is a MUCH more affordable option, the disadvantages being noise and petrol