BOTH INTERNATIONAL & INLAND A vessel is displaying ONLY the lights shown in illustration D053RR below. What type of vessel is this?

Correct Answer: Option C — vessel engaged on pilotage duty underway

Rule 29(a)(i) requires a vessel engaged on pilotage duty to exhibit two all-round lights in a vertical line, the upper being white and the lower being red. These lights identify the vessel as a pilot boat, allowing other vessels to recognize her role and provide necessary cooperation.