Developed in conjunction with the Royal Yachting Association, Tough Charts are fully waterproof and designed to be used on open or wet boats. They are A3 in size and spiral bound for convenience. Each Tough Chart consists of around 15 main charts for a specific area, as well as approach plans covering a number of popular harbours in the area. The main charts are based on the 1:75000 scale charts of the area and are magnified for easier reading at speed. A3 spiral bound book, Practical to use, can be written on, 100% waterproof and Simple to update. Coverage: Solent and approaches.