Originally Posted by SURV69
the naysayers have spoken ...
You know, the naysayers were around long after steam and gasoline moved boats, and most boats kept their sails cause they didn't trust or have faith in the Steam & IC engines.
AND ... when talking about electric ...NO ONE wants to consider using the sails more often and the engine(motor), much less often ... or for that matter, to consider 3-4 knots as adequate speed ...
We'll see what happens if the price of petrol hits $4 or $5 ... or more ...
We just came out of a period when petrol at the dock
was running $4-5/gal in the states.
It's still in that range or higher in the EU.
No mass produced electric cruising boats available...so I guess we saw.
To the OP: This has been beat to death if you do a search of this forum. If you are willing to accept drastically reduced performance, electric is viable today but it is no where close to meeting the capability of a good diesel engine at a similar price.
Once you add a diesel generator, any claims of better reliability
go out the window as you have the same reliability
of a diesel propulsion
engine plus all the gear
to convert that power into electricity and back to mechanical power.
Also don't get suckered into the magic electric HP. For a cruising boat, HP is HP. Unless you are wanting to brag about your 0-6kt times, it's irrelevant (automobiles have different performance requirements that do benefit from the low RPM
torque of an electric motor).
Ultimately, it's the size of the fuel tank
that kills the electric dream.
Update: And to the point about diesel electric trains, it's more about the transmission
than anything else. Imagine trying to operate the clutch
on 5 3000HP locomotives simultaneously to get a 100 car train to start moving. Then try shifting all 5 3000HP locomotives simultaneously to second gear
. The transmissions would be huge and massively complicated. On the other hand, electricity is relatively simple to apply and control for a single
guy in the lead locomotive.