BOTH INTERNATIONAL & INLAND Which vessel must show a towing light above the stern light?

Correct Answer: Option A — A vessel with a 150-meter tow astern

Rule 24(a)(iv) mandates that a power-driven vessel towing astern must exhibit a yellow towing light in a vertical line above her sternlight. This requirement applies regardless of the tow's length, whereas vessels pushing ahead or towing alongside do not carry this light configuration.