Modern racing Maxi Yachts are shaped like a wedge of cheese. The keel is aligned axially with the centerline of the boat. When the boat heels over in the wind, the outer edge of the hull is the only part of the boat in contact with the water. In effect, the outer edge of the hull becomes the new hull in water (HIW).
The keel is aligned with the center of the hull, not the HIW. The keel and the HIW form a vertex somewhere ahead of the bow. It seems like this arrangement pushes the HIW somewhat laterally through the water, creating extra drag. In fact, I've observed water spraying up from the waterline near the rear of a boat.
So the question is, can a keel in a Maxi Yacht rotate around its vertical axis (yaw) to re-align with the HIW?