What is Keel Lift??

A short description of keel lift on a sailboat and how a symmetrical foil (the keel or centerboard) needs an angle of attack in order to create lift. This angle of attack is created by the lee way (sideways drift) of the sailboat as it moves through the water. The lift developed by the keel is a force called "lateral resistance", that then counteracts and reduces leeway. Clear as mud, right?