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dead reckoning

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dead reckoning in WordNet English dictionary

noun
  1. navigation without the aid of celestial observations
    dead reckoning 
  2. an estimate based on little or no information
    guess  guesswork  guessing  shot  dead reckoning 
WordNet Lexical Database v3.0, © 2006 Princeton University


dead reckoning in English Wiktionary

 
  1. (noun) A method of estimating the position of a ship or aircraft by applying estimates of the distance and direction travelled to a previously known position. In respect to ships/boats, it excludes the effect of wind and current on the vessel. Compare with estimated position. Abbreviation: DR
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