Definitions for "Dead Reckoning"
a system of navigation where the position of a ship is calculated without the use of any astronomical observation whatever.
The technique of determining position by computing distance traveled on a given course. Distance traveled is determined by multiplying speed by elapsed time.
The estimation of a ship's position from the distance according to the ship's log and the course steered by the compass, with corrections for currents and other factors, but without astronomical observations.