What is "dead reckoning" in navigation?

Dead reckoning in navigation refers to the process of determining one's current position by using a previously known position while also considering speed, time, and course direction. This method allows navigators to estimate their location without relying on external references such as landmarks or GPS. By calculating the distance traveled from a known point based on navigation techniques, navigators can plot their course and maintain an understanding of their position over time.

This method is crucial in situations where visual references are limited or non-existent, such as in open waters or during poor visibility. It requires a good understanding of navigation principles, including how to maintain accurate bearings and account for factors such as currents and wind, which can affect the intended path.