Rules of the Road · Power-Driven Vessels
A power-driven vessel underway and less than 50 meters in length is required to show which lights at night?
- AOne masthead light, sidelights, and a sternlight✓ Correct
- BTwo masthead lights (forward lower, aft higher), sidelights, and a sternlight
- COne masthead light and an all-round white light aft
- DSidelights and a sternlight only
Explanation
Rule 23(b) allows a power-driven vessel less than 50 meters in length to show a single masthead light instead of the two required for vessels 50 meters or more. Sidelights and a sternlight are still required.
Authority: 72 COLREGS Rule 23(b)
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