USCG Exam PracticePlot true course and distance between two charted points
A navigator has a DR position and has estimated the current's set and drift for the elapsed time since the last fix. The navigator lays off the current vector from the DR position. What is the resulting position called, and how is it plotted?
- A. A fix, plotted as a dot inside a circle
- B. A running fix, plotted as a dot inside a triangle
- ✓ An estimated position (EP), plotted as a dot inside a squareCorrect
- D. A DR position, plotted as a dot with a semicircle
Why C is correct
The estimated position (EP) is the DR position corrected for estimated set and drift of the current. It is plotted as a dot inside a square and represents the best position available between fixes when only the current can be estimated.