Question 495 Rules of the Road

The correct answer is B) the vessel is fishing by trawling. The lights shown in illustration D067RR depict the required navigation lights for a fishing vessel engaged in trawling, as specified in the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules. These rules require fishing vessels engaged in trawling to display two all-round green lights in a vertical line, indicating that they are trawling and not simply underway. The other options are incorrect because option A) the vessel is anchored would require different lights, option C) it is tending a small fishing boat would require additional lights for the small boat, and option D) it is underway but not fishing would not display the characteristic green trawling lights.