Written by a sailing Olympian, this has been the most-trusted reference for racing sailors around the world for over 45 years and has sold 320,000 copies in the English language alone.The unique approach devised by Paul Elvstrom offers bird's-eye views and detailed explanations of how the rules are applied to racing situations, with each cross-referenced to the relevant case studies provided by World Sailing (formerly ISAF).Completely revised to cover the new rules for 2017-2020, Paul Elvstrom Explains also includes the full text of the racing rules, with a handy quick-reference guide highlighting the latest changes. There is also a confidence-building section on how to present your case in a protest and the back cover shows signal flags for easy reference on the race course.This is the perfect pocket reference for racers in every type of boat: dinghy, keelboat or yacht.