Question 497 Rules of the Road

The correct answer is D) Red and green sidelights and a stern light. According to the Navigation Rules, both International and Inland, sailboats 20 meters (approximately 65 feet) in length or more must exhibit the following navigation lights when underway at night: red and green sidelights, and a white stern light. This configuration allows other vessels to identify the sailboat's orientation and direction of travel. The other options are incorrect because: A) only sidelights are not sufficient, B) a stern light alone is not enough, and C) a single all-round white light does not provide the necessary information about the sailboat's orientation.