BOTH INTERNATIONAL & INLAND A head-on situation at night is one in which you see dead ahead a vessel showing __________.

Correct Answer: Option A — both sidelights of a vessel and her masthead light(s)

A head-on situation under COLREGS Rule 14 is defined as two power-driven vessels meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, where each sees both sidelights and masthead lights in line ahead.