Rules of the Road · Anchored & Aground
By day, a vessel at anchor shall display:
- AOne black ball in the fore part of the vessel✓ Correct
- BTwo black balls in a vertical line
- CA black cone, apex downward
- DA black cylinder
Explanation
Rule 30(c) requires a single black ball shape displayed in the fore part of the vessel during daylight while at anchor. This single ball is one of the most commonly tested day shapes on the exam.
Authority: 72 COLREGS Rule 30(c)
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