A book for the amateur yachtsman or beginner in navigation, not too technical for the average individual with a reasonable mathematical background. ""Personally"" writes our nautical expert, ""I'd prefer to start a student off with Dutton or Weems, because, though complete navigational text books, they contain everything needed to cover the entire field. Possibly a less formidable tone is not so discouraging to face and may lead the aspiring navigator to the tougher aspects of the science. This book possesses the merits of clarity, conciseness, condensing much in small space."" The charts and diagrams should supply an important factor not available in the galleys.