Required Navigation Lights: Powerboats
Powerboats include sailboats operating under engine power.
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One all-round white light and sidelights meet the navigation light requirement for powerboats less than 12 metres (39.4 feet) in length (Rule 23).
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One masthead light, red and green sidelights, and one sternlight meet the navigation lights requirement for powerboats less than 50 metres (164 feet) in length (Rule 23).