BOTH INTERNATIONAL & INLAND What describes a head-on situation?

Correct Answer: Option C — Seeing both sidelights and masthead light(s) of a vessel dead ahead

Rule 14(b) defines a head-on situation as one where a vessel sees the other ahead and by night she could see the masthead lights of the other in a line or nearly in a line and/or both sidelights. This visual configuration confirms a reciprocal course requiring a port-to-port passage.