Chart Navigation & Plotting · Plotting Conventions
A dead-reckoning position is conventionally symbolized on the plot by a:
- ADot with a semicircle and the time labeled at a slant✓ Correct
- BDot inside a circle
- CDot inside a square
- DStar
Explanation
A DR position is marked with a dot and a semicircle, the time written at a slant. This distinguishes it at a glance from a fix (dot in a circle) and an EP (dot in a square).
Authority: Bowditch, American Practical Navigator (Pub. 9), plotting symbols
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