Celestial Navigation For Yachtsmen Revised Ed. Mary Blewitt
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There is deep mystery and profound satisfaction in finding your position on earth by reference to the sun, moon, and stars, not to mention profound relief when the GPS receiver stops working in mid passage. That is why knowledge of celestial navigation is still a rite of initiation, and its practice still a favorite pastime among serious cruisers. That this edition of Celestial Navigation for Yachtsmen should appear 44 years after the first British edition and 27 years after its first publication in the U.S. is eloquent testimony to the author's clear, concise explanation of a difficult skill. Among other changes, this edition substitutes the Nautical Almanac for the Air Almanac, discusses the 'short' tables based on H.O. 211, expands the discussion in a few areas, fine tunes it in others, and shows how to advance a line of position for a running fix from sun sights. The only mathematics involved are straightforward addition and subtraction.