USCG Exam PracticePlot true course and distance between two charted points
A navigator plots a DR position and then applies an estimated current with a set of 045°T and a drift of 2 knots for 3 hours. The resulting position is plotted as a dot inside a square. What is this position called?
- A. A fix
- B. A running fix
- C. A dead-reckoning position
- ✓ An estimated positionCorrect
Why D is correct
The estimated position (EP) is the DR position corrected for estimated set and drift of the current, and is plotted as a dot inside a square. A fix uses a circle, and a DR position uses a semicircle. (Bowditch Ch. 8 §802, §803)