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The Complete On-Board Celestial Navigator: Includes Everything but the Sextant |
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The Complete On-Board Celestial
Navigator: Includes Everything but the Sextant Once the universal system of navigation out of sight of land, celestial navigation is now more often a backup to electronic navigation methods, chief among them the Global Positioning System (GPS). However, among cruising sailors the use of a sextant to locate one's position on the ocean is still a skill treated with pride and respect. U.S. Power Squadron courses in celestial navigation remain popular for this reason, and because it's wise to have a backup method of navigation if your GPS receiver malfunctions. The Complete On-Board Celestial Navigator responds to these realities with the ideal package for today's market. Traditionally, the navigator would learn sight-taking skills from an instructional book; identify stars or planets for "shooting" sights using a graphic or tabular star finder; obtain the precise position in the heaven of the chosen star, planet, moon, or sun at the time of the shooting from an annual nautical almanac; and "reduce" the sextant sighting using sight reduction tables. All these components together add up to an unwielding package. George G. Bennett Soft (Oct 1998) 176p. 8 1/2 x 11 Mfg. Part Number 0070071101 |
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