Rules of the Road · Day Shapes — Aground
By day, a vessel aground displays:
- AOne ball
- BTwo balls
- CThree balls in a vertical line✓ Correct
- DA diamond over a ball
Explanation
A vessel aground shows three black balls in a vertical line by day, plus the anchor light(s) and two all-round red lights at night.
Authority: COLREGS/Navigation Rules, Rule 30(d)
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