Thursday, August 4, 2016

Re: [Electric Boats] AC vs DC motors - new EC cat

 

Yes.
But irrelevant for actual practical use as OP.

But as You said, and I did earlier, it´s perfectly possile for multihulls to go very fast.

And even more importantly, it´s possible to increase the speed a lot, for low cost.
Say 20 kW for 11 knots.
60 kw/15 knots.
BUT .. 90 kW for 20 knots.

But, ...
It´s still 10 kW for 10 knots, whats the "right choice" more or less..


On 04/08/2016 08:16, king_of_neworleans wrote:
Thats true. If it doesn't pull a wake and doesn't push a bow wave, theoretical hull speed is not nearly as relevant as with a more conventional hull. Consider for instance a high speed SWATH hull. Definitely not a hydrofoil. Definitely not planing. But easily exceeds the old 1.34 x  WLW. Multihulls with very narrow hulls behave similarly. Sure there is still a penalty for going fast, but it isn't quite as big a deal as it is with a classic monohull shape.

--   -hanermo (cnc designs)  

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Posted by: Hannu Venermo <gcode.fi@gmail.com>
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