This is the successor to the author's previous book "Sailing Theory and Practice", published over 30 years ago, and takes into account the many developments which have taken place in sail performance since then. The author considers the factors which affect sail power: wind speed, sail area, sail shape, sail setting, angle of heel and steadiness of the wind, and explains why certain rigs have superior power and efficiency. He compares a number of different types of rig, and concludes that the Bermudan rig, which dominated the contemporary sailing scene for both racing and cruising, is by no means the best available. The test results also indicate where improvements in efficiency may be made.
The purple boards with silver titling on spine are in excellent condition. Pages are clean with no markings and binding is tight. The one thing preventing this book being sold "as new" is very slight foxing to top page ages. The dust jacket is in perfect condition.
The book is well illustrated with many black and white photographs and diagrams, charts , graphs, etc.