BOTH INTERNATIONAL & INLAND You sight another power-driven vessel dead ahead showing both the red and green sidelights. Which action are you required to take?

Correct Answer: Option C — alter your course to starboard

Rule 14(a) states that when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. This ensures a safe, predictable passing maneuver.