BOTH INTERNATIONAL & INLAND When is a power-driven vessel "not under command" at night required to show her sidelights?

Correct Answer: Option A — when making headway

Rule 27(a)(ii) specifies that a vessel not under command shall exhibit sidelights and a stern light only when making way through the water. If the vessel is not making way, she displays only the two all-round red lights, as sidelights are not required when stationary.