BOTH INTERNATIONAL & INLAND You see the display of lights shown in illustration D064RR below. These lights could indicate which of the following?

Correct Answer: Option C — 40-meter tug with tow exceeding 200 meters

Rule 24(a) mandates that when the length of the tow exceeds 200 meters, the towing vessel must display three masthead lights in a vertical line. This configuration identifies the vessel as a tug engaged in towing where the tow length necessitates additional warning to other vessels regarding the maneuverability constraints.