A wing keel does not make a boat go any faster by lifting it
out of the water. You don't get lift for free. Lift comes at
the expense of drag, remember? The drag created by the wing
in the process of generating lift would be greater than any
drag saved by lifting the boat... otherwise you'd have a
perpetual motion machine.


Charlie Morgan wrote:
Yeah! That's why no one has ever succesfully built a hydrofoil boat.
And you can stop trying to invent the airplane. too! Sails on a
sailboat will only make it go backwards due to all the drag overcoming
the lift.


So you believe a wing keel does make boats go fster by
lifting it up?

DSK