USCG Exam PracticeCourse to steer to compensate for current
Between fixes, a navigator has estimated the current's set and drift. The best position available to the navigator at this time is which of the following?
- A. The DR position, because it is based on course and speed through the water
- B. The last fix, because it is the only confirmed position
- ✓ The estimated position, because it corrects the DR position for estimated currentCorrect
- D. The course-made-good position, because it reflects actual track over ground
Why C is correct
Bowditch Ch. 8 §803 states that the EP is the best position available between fixes when only the current can be estimated. It is derived by laying off the current's set and drift vector from the DR position for the elapsed time.
Cited:Bowditch Ch. 8 §803