This beautifully illustrated and well-organised book shows you how to trim your sails and rig for maximum performance. With a revolutionary approach to sail and rig tuning, this book tackles the practical and realistic elements of tuning your boat as well as the theory of sail aerodynamics. The book covers the many variations in boat, sail and rig design. It has become the bible on tuning. AUTHOR: Ivar Dedekam, of Dedekam Design, specialises in uniquely illustrated nautical manuals which are easy to understand and remember. Ivar has been sailing for over 30 years and has logged more than 50,000 nautical miles, including three Atlantic crossings. 360 colour illustrations