The Symmetry of Sailing: The Physics of Sailing for Yachtsmen

This theory book explains to the amateur sailor why a yacht moves through the water. Evolved from the author's annual series of lectures, the book addresses several issues, such as why a boat must make leeway in order to sail to windward, how a helmsman can prevent downwind rolling, why a sail is able to produce a force at right angles to the wind direction, how the motions of water particles in waves affect boat handling, and many other aspects of aerodynamics.