BOTH INTERNATIONAL & INLAND Which vessel is required to show a green light over a white light in a vertical line above the level of the sidelights?

Correct Answer: Option B — a vessel trawling

Rule 26(a)(i) explicitly requires a vessel engaged in trawling to exhibit a green light over a white light in a vertical line. This specific light combination serves as the primary night identification signal for trawlers, distinguishing them from other fishing vessels and power-driven vessels.