BOTH INTERNATIONAL & INLAND When is a pilot vessel on pilotage duty at night required to show sidelights and a stern light?

Correct Answer: Option D — at any time when underway

Rule 29(a) states that a pilot vessel on duty, when underway, shall exhibit sidelights and a stern light in addition to its identifying white-over-red lights. These lights are essential for other vessels to determine the pilot boat's heading and speed, facilitating safe interaction during pilotage operations at night.