GetOffYourGas wrote: ↑
Tue Jan 05, 2021 11:47 am
I have been into electric boating since 2011. I use a Torqeedo outboard to power my 22', 1.5 ton sailboat. It can push the boat over 5 knots on still water at full throttle. But the battery will only last 30 minutes or so = 2.5 mile range. I can still go half that speed at 1/8th throttle (due to the nature of displacement boats). So 4 hours at 2.5 knots is 10 miles. This application is a bit different from yours, though.
Thanks for sharing, Gerry. Which Torqeedo model do you have? I tried an ePropulsion Navy 6.0 a few months back, but it wouldn't quite plane the 10-foot inflatable.
I have to add to my requirements:
- unsinkability in some form (a'la Boston Whaler)
- steering wheel
As with all my requirements, a certain amount of trade-off is acceptable.
The 'hull speed' issue is an interesting one. There are lots of examples of certain hull configurations exceeding what should be the 'hull speed' limit for their length. Usually these are multi-hull configurations (catamaran is typical), with very long/narrow hulls. Think Hobie-Cat. Short of hydrofoil boats, which don't seem practical for my application, this approach would seem to be the most effective in allowing decent speed with less power that a typical monohull configuration would require.
Regarding boating costs, yes they can be high. I was able to get into last year ('starter boat') for under $2K, and even including additions along the way (like the 2.2kW motor), I stayed under $3K. (This doesn't include the batteries, as I use those for other things.) A lot of the cost of boating can come from fuel costs, and electric boating sidesteps much of that. For this next level of boating, I'm budgeting about as much as my Leaf cost ($15K)
I'll just get these out of the way now:
- "A boat is a hole in the water into which you pour money."
- "The two happiest days in a boat owner’s life: the day you buy the boat, and the day you sell the boat."