BOTH INTERNATIONAL & INLAND Which power-driven vessel is NOT required to carry a light in the position of the after masthead light?

Correct Answer: Option B — A vessel of 45 meters in length trolling

Rule 23(a) requires power-driven vessels 50 meters or more in length to carry a second masthead light abaft and higher than the forward one. A 45-meter vessel, even when trolling, does not meet the 50-meter threshold, thus it is not required to carry an after masthead light.