Yes .. and no.
It works, but very poorly, and generates very little power and has alot of drag.
2 large modern PV panels at 250-300W each will develop about 4-6 times the power, for very little cost.
Today, PV panels cost under 1$/watt.
Buying large is *very much* better than using smaller ones.
There is a speed cubed or squared relationship in water.
Thus fixed large surface area generators for narrow-speed-band high speed use work quite well, in water.
Thats why steam turbines for example work quite well, reliably and efficiently (although I believe steam is more of a gas, but..).
Its quite impractical to put one in a sailboat.
It works, but very poorly, and generates very little power and has alot of drag.
2 large modern PV panels at 250-300W each will develop about 4-6 times the power, for very little cost.
Today, PV panels cost under 1$/watt.
Buying large is *very much* better than using smaller ones.
There is a speed cubed or squared relationship in water.
Thus fixed large surface area generators for narrow-speed-band high speed use work quite well, in water.
Thats why steam turbines for example work quite well, reliably and efficiently (although I believe steam is more of a gas, but..).
Its quite impractical to put one in a sailboat.
On a sailboat, the sail is one big wind generator, and so underway it's quite simple to power an in-water generator towed or directly attached to the boat for house battery charging.
Nick
-- -hanermo
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