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dead reckoning

noun

, Navigation.
  1. calculation of one's position on the basis of distance run on various headings since the last precisely observed position, with as accurate allowance as possible being made for wind, currents, compass errors, etc.
  2. one's position as so calculated.


dead reckoning

noun

  1. a method of establishing one's position using the distance and direction travelled rather than astronomical observations
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of dead reckoning1

First recorded in 1605–15
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Example Sentences

This is dead reckoning, as the theodolite legs have been out of action for some time, splinted together to form tent-props.

It is just in the single matter of keeping a ‘dead reckoning’ that an ocean ship has the advantage of this craft.

He ground his cud and muttered ugly things to himself, for his dead reckoning had gone astray and he was worried.

Navigation by account, or dead reckoning, has changed little since Kelly's time.

E 21 dived to 130 feet to pass under the minefield which guards the "narrows," and went through by compass and dead reckoning.

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