Ivar DedekamIvar 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 crossing. His book Illustrated Sail & Rig Tuning is an international success and has been published in 19 languages. Read More Read Less