BOTH INTERNATIONAL & INLAND You see ONLY the light shown in illustration D080RR below. What type of vessel could this be?

Correct Answer: Option B — sailing vessel

According to COLREGS Rule 25, a sailing vessel under way shall exhibit sidelights and a stern light. Under 20 meters, these lights may be combined in a tricolor lantern at the masthead, which is the single green light displayed by small sailing craft.