Rules of the Road · Anchored & Aground
A vessel less than 50 meters in length at anchor may, instead of the two prescribed anchor lights, show:
- AA flashing white light
- BA red over white all-round light
- CA single all-round white light where it can best be seen✓ Correct
- DSidelights only
Explanation
Rule 30(b) allows vessels less than 50 meters at anchor to show just one all-round white light where it can best be seen, instead of the two-light forward/aft arrangement required for larger vessels.
Authority: 72 COLREGS Rule 30(b)
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