Question 673 Rules of the Road

The correct answer is D) from sunrise to sunset in restricted visibility. The International and Inland Navigation Rules (COLREGS) state that the lights required by the rules must be shown from sunrise to sunset in restricted visibility. This ensures that vessels can be seen and identified during daylight hours when visibility is limited, such as in fog, rain, or haze. The other options are incorrect because A) the lights are required at all times, not just from sunset to sunrise, B) the lights are not required to be shown at all times, and C) the requirement to show the lights is not dependent on having a lookout posted.