BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are crossing as shown in illustration D030RR below. Which statement is TRUE?

Correct Answer: Option D — Vessel "A" must keep clear of vessel "B".

Rule 15 requires the vessel that has the other on her starboard side to keep out of the way. In a crossing situation, the vessel with the other on her starboard side is the give-way vessel and must take early and substantial action to keep clear.