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dead reckoning |
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dead reckoning: see navigation navigation, science and technology of finding the position and directing the course of vessels and aircraft.
Early Navigational TechniquesIn ancient times, mariners navigated by the guidance of the sun and stars and landmarks along the coast. ..... Click the link for more information. . dead reckoning a method of establishing one's position using the distance and direction travelled rather than astronomical observations dead reckoning [¦ded ′rek·ən·iŋ] (navigation) Determination of position of a craft by advancing a previous position to a new one on the basis of assumed distance and direction traveled. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Sailing one direction, drifting another direction, to say nothing of the set of the current in some third direction, makes a resultant which dead reckoning can never calculate. In the midst of this chopping sea of civilized life, such are the clouds and storms and quicksands and thousand-and-one items to be allowed for, that a man has to live, if he would not founder and go to the bottom and not make his port at all, by dead reckoning, and he must be a great calculator indeed who succeeds. Captain Davenport worked up his dead reckoning, allowing generously for drift, and announced Moerenhout Island to be not more than ten miles off. |
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