a technique of estimating the career of an aircraft or a ship without astronomical findings, as through the use of to a previously determined position this course and length traveled since.
Predictive calculation based on inference; guesswork.
A method of estimating the career of a ship or plane by applying quotes of length and path travelled to a previously understood position. According to ships/boats, it excludes the result of wind and present on vessel. Compare with expected place. Abbreviation: DR
the technique of determining the spot of a ship from a record kept associated with programs sailed as written by compass, while the length made for each training course as found by wood, with allowance for leeway, etc., with no aid of celestial observations.