In addition to an all-round white light what light(s) must power-driven vessels less than 65.6 feet (20 meters) long exhibit when underway between sunset and sunrise?

Power-driven vessels less than 656 feet (20 meters) long must exhibit both a red light and a green light when underway between sunset and sunrise, in addition to the all-round white light. The red light should be on the vessel's port side, and the green light should be on the vessel's starboard side.