Required Lights: Motorboats and Sailboats When Underway

If less than 65.6 feet (20 meters) long, all motorboats and sailboats must exhibit red, green, and white lights. The required lights are:

• Red and green sidelights visible from a distance of at least two miles away—or if less than 39.4 feet (12 meters) long, at least one mile away—on a dark, clear night.
• An all-round white light is only allowed in vessels less than 12 meters (39.4 feet). If the vessel is longer than 65.6 feet in length, the masthead light must be visible from a distance of at least 5 miles. If the vessel is longer than 39.4 feet in length but lesser than 65.6 feet in length, the masthead light must be at visible from a distance of at least 3 miles. The all-round white light (or the masthead light) must be at least 3.3 feet higher than the sidelights.