Why won’t your engine reach its top rated RPMs? Why is your propeller shaft vibrating? Why doesn’t your boat reach the top speed claimed by the manufacturer? Will more or less propeller pitch improve your boat’s performance? Is a square wheel (pitch equals diameter) best? Is a folding prop best for your purposes? Should you choose a two-, three- or four-bladed propeller? All these questions and more are answered in this complete reference book.

Edition: 2001