Paul Boissier has obviously taken the time to write this book in a way that makes it a simple learning tool for the amateur and professional mariner alike. It is presented in very clear, easy to follow chapters without over indulging in the scientific basis that navigation is based on. Any sea-going person will benefit immensely from reading this book which most definitely does exactly as its title "Understanding Nautical Charts" states. It is typical of the great British method of teaching the masses "Keep it clear & keep to the point". I have read many navigational books and this certainly ranks with the best. Typeset & quality of print is top class, Covers Paper & Digital charts alike. Excellent chart samples with thorough explanations of the various chart symbols. An extremely enjoyable read, very difficult to put out of your hand.