Dead Reckoning is a navigation method used to estimate a vessel's or aircraft's current position based on a previously known location. It involves calculating the distance traveled and the direction taken, accounting for factors like speed and time. This technique is essential for pilots and sailors when GPS or other navigational aids are unavailable.
The term originated from the phrase "deduced reckoning," which reflects the process of deducing one's position. Dead Reckoning relies on accurate measurements and can be affected by external factors such as wind, currents, and weather conditions, making it crucial for navigators to adjust their calculations accordingly.