"DSK" wrote in message
...
Thom Stewart wrote:
You're the only one talking about get a hull on plane. I showed you a
picture of my 2nd boat with a semi planning Hull.

That isn't what I'm talking about. I'm talking about the lifting force
created down wind, the righting force created when heeled.

Sailboats need righting force when going downwind too. If there were none,
they would tip over.

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.

" . . . and that stupid perpetual motion machine that Lisa made just keeps
going faster and faster. Lisa! In this house we obey the laws of
thermodynamics!"
Homer Simpson in "Disbanding of the PTA"