One thing you should factor in is that an airplane wing is let's say 50' and the airplane is traveling at over 100 mph. A sailboat, maybe 6 knots. The wing is what? A few square feet. So as Jackdaw says, and he would know better than me, not much lift. When we speak of lift of the keel, we mean lift to windward. The foil creates a vector component towards the wind. We don't mean lift as in lifting the boat out of the water. I'm not sure that would be a plus either since displacement boats speed increases with a longer waterline.
Yes the wings get weight of the keel low but so does a bulb and it has less drag.
If you try to delve too deeply into the physics of sailing you go from Newtonian to Quantum Physics in a, well, quantum leap. There is a book - The Physics of Sailing which you might find helpful and which is not too math heavy.
Yes the wings get weight of the keel low but so does a bulb and it has less drag.
If you try to delve too deeply into the physics of sailing you go from Newtonian to Quantum Physics in a, well, quantum leap. There is a book - The Physics of Sailing which you might find helpful and which is not too math heavy.