dead reckoningdead reckoning
the finding of a ship's position by an estimate based on data recorded in the log, as speed and the time spent on a certain course, rather than by more precise means, as astronomical observations or Loran
Origin of dead reckoningfrom ded. reckoning, abbreviation, abbreviated of deduced reckoning
- A method of estimating the position of a vehicle such as an aircraft or a ship based on its previous position and its course and speed over a known interval of time.
- Predictive calculation based on inference; guesswork.
Origin of dead reckoningPossibly alteration of ded. abbr. of deduced from deduce to trace from the beginning ; see deduce .