Chart Navigation & Plotting · Plotting Conventions — Labeling
By convention, a course line on a chart is labeled with the true course above the line and the speed below it, using the abbreviations:
- AC and S, with 'C' above and 'S' below✓ Correct
- BLat and Long
- CSet and Drift
- DHW and LW
Explanation
Course is labeled 'C 090' above the line and 'S 12' below it. Fixes are marked with a dot in a circle and the time in four digits; a DR is a dot in a half-circle (or a cross) with time.
Authority: Bowditch (Pub. No. 9); plotting conventions
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