Celestial Navigation
Toghill, Jeff E.
Sold by The Secret Bookshop, Tararua, New Zealand
AbeBooks Seller since January 11, 2016
Used - Soft cover
Condition: Used - Good
Ships from New Zealand to U.S.A.
Quantity: 1 available
Add to basketSold by The Secret Bookshop, Tararua, New Zealand
AbeBooks Seller since January 11, 2016
Condition: Used - Good
Quantity: 1 available
Add to basketA good clean copy which feels unread. This guide to celestial navigation covers the instruments required, estimating positioning and dead reckoning, tables and computations, course plotting and star identification. It concentrates on the plotting of the boat's position by sun, planets and stars when out of sight of land.
Seller Inventory # 041214
To the uninitiated, celestial navigation appears to be a somewhat frightening exercise in mathematics.
In fact, the maximum mathematics involved in the new sight reduction systems is the addition of three lines of figures. Similarly, the apparent complexities of the solar and stellar systems take on a less frightening appearance when related to the lighthouses and similar earthly objects used for coastal navigation. Throughout this book, the author uses such a comparison between earthly and heavenly objects in explaining the close relationship between coastal and celestial navigation. In doing so, he reduces a complex subject to a simple and interesting one that can be absorbed by even the most non-mathematically minded. The book concentrates for much of its length on the plotting of the boat's position by sun, planets, and stars when out of sight of land. It also deals with related navigational routines such as checking the compass by using heavenly objects, taking radio time signals, and adjusting the sextant for day-to-day corrections. This is celestial navigation in its simplest form, presented in a way which even the most amateur navigator can understand and absorb."About this title" may belong to another edition of this title.
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