BOTH INTERNATIONAL & INLAND A vessel not under command, underway but not making way, would show __________.

Correct Answer: Option A — two all-round red lights in a vertical line

COLREGS Rule 27(a)(ii) dictates that a vessel not under command, whether making way or not making way, must exhibit two all-round red lights in a vertical line where they can best be seen, omitting sidelights and sternlights when not making way.