Which of the following best describes 'DR position' in navigation?

The term 'DR position' stands for Dead Reckoning position. It refers to the estimated position of a vessel that is calculated based on its last known position, course, speed, and the time elapsed since the last position fix. This method does not account for external factors such as current or wind effects, but relies solely on the vessel's movement along the defined course. Therefore, the pivotal aspect of the DR position is the estimation based on the vessel's course and speed, making it critical for navigational accuracy when other position-fixing methods are unavailable.

Other potential meanings for the given options do not correctly encapsulate the concept of 'DR position'. The option referring to a vessel's current position or the use of GPS technology is concerned more with actual position fixes rather than estimation methods.