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Hollis & Carter, London 1980 1st edition. ISBN:0-370-30087-4. Foreword by the Director of the Royal Institute of Navigation. Takes a fresh look at the practice of marine navigation today. It briefly summarizes what the navigator, particularly in the merchant service, needs to know about the state of the science. While giving coastal and astronomical navigation which have stood the mariner in good stead up to the present, the manual gives special weight to modern methods deriving from the application of electronic aids. Hint of fore-edge foxing. 752pp 220 x 130mm