Chart Navigation & Plotting · Plotting Conventions — Labeling
By convention, how is a course line labeled on a chart?
- ASpeed above the line, course below
- BCourse (C) as three-digit true degrees above the line, speed (S) in knots below the line✓ Correct
- CMagnetic course above, true below
- DTime above, distance below
Explanation
Standard labeling: course is written above the line as 'C 090' (three-digit true) and speed below as 'S 12.' Fixes are labeled with the time in four digits; a DR position is a half-circle with the time, and an estimated position is a square.
Authority: Bowditch (Pub. No. 9), plotting conventions; NOAA charting practice
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