Question 537 Rules of the Road

The correct answer is A) not under command. The lights shown in illustration D049RR are the required navigation lights for a vessel that is not under command. This means the vessel is unable to maneuver as required by the Rules of the Road and must exhibit these distinctive lights to alert other vessels in the area of its limited ability to maneuver. The other answer choices are incorrect because the lights in the illustration do not match the navigation light requirements for vessels engaged in fishing (B), restricted in their ability to maneuver (C), or on pilotage duty (D). Those vessel types have different navigation light configurations specified in the International and Inland Navigation Rules.