USCG Exam PracticePlot true course and distance between two charted points
On a DR plot, how is a course line correctly labeled?
- ✓ True course above the line, speed below the lineCorrect
- B. Magnetic course above the line, speed below the line
- C. Speed above the line, true course below the line
- D. Time above the line, distance below the line
Why A is correct
Standardised DR labeling places the true course (e.g., 'C 090') above the course line and the speed (e.g., 'S 8') below the course line. This convention allows any watchstander to read the plot at a glance. (Bowditch Ch. 8 §802)
Cited:Bowditch Ch. 8 §802