United States Coast Guard Captains License Practice Exam

What does the green light over a white light indicate for a trawling vessel?

1. The vessel is fishing

2. The vessel is operating in a restricted area

3. The vessel is low on fuel

4. The vessel has right of way

The correct answer is: The vessel is fishing

The correct answer indicates that the trawling vessel is actively engaged in fishing operations. In maritime navigation, the display of a green light over a white light signifies that the vessel is using gear for trawling, which is a method of fishing that involves dragging a net through the water. This configuration is an important visual cue for other vessels to recognize that the trawler is occupied with fishing activity and may not be maneuvering as quickly or readily as a vessel not engaged in such operations. Recognizing this signal is essential for safety at sea, as it helps prevent collisions and allows other vessels to navigate accordingly. The importance of understanding these light configurations is emphasized within the context of the "Rules of the Road," which outline navigational protocols and responsibilities for vessels operating in shared waters.