BOTH INTERNATIONAL & INLAND Which lights is a vessel not under command making way at night is required to show?

Correct Answer: Option B — two all-round red lights in a vertical line, sidelights, and a stern light

Rule 27(a)(i) and (ii) require a vessel not under command to show two all-round red lights in a vertical line. When that vessel is also making way through the water, she must additionally exhibit sidelights and a stern light to indicate her movement to other vessels.