BOTH INTERNATIONAL & INLAND Which display of lights shown in illustration D072RR below indicates a 65-meter tug towing a barge astern, length of tow 120 meters?

Correct Answer: Option C — C

Rule 24(a) requires a power-driven vessel towing to display two masthead lights in a vertical line. If the length of the tow exceeds 200 meters, a third masthead light is required. For a 120-meter tow, two masthead lights are sufficient for the towing vessel.