towed water generators

[mrbill]

I know towed generators create drag which can slow a boat down (I've seen numbers like up to 30 pounds) but does anyone have any direct experience on just how much a towed water generator slows a boat down? For example, what was the speed before the generator was deployed, versus after.

[AdriftAtSea]

I'd imagine that it depends on the specific generator, since some will create far more drag than others. :) Figures I've seen and heard are roughly anywhere from .5-1.5 knots, depending on the boat, the generator, etc. It will probably slow a larger boat less, since a larger boat will generally have more drag to begin with and greater sail area to compensate for the drag. :)