USCG Exam PracticeCourse to steer to compensate for current
How is an estimated position (EP) derived from a DR position?
- A. By applying leeway to the DR position
- ✓ By laying off the current's set and drift for the elapsed time from the DR positionCorrect
- C. By averaging the DR position with the last known fix
- D. By applying the difference between course steered and course made good to the fix
Why B is correct
Bowditch Ch. 8 §803 states that from the DR position, the navigator lays off the current's set and drift for the elapsed time; the end of that vector is the EP. The EP is the best available position between fixes when only the current can be estimated.
Cited:Bowditch Ch. 8 §803