Question 794 Rules of the Road

The correct answer is C) a pushing vessel and a vessel being pushed, when they are rigidly connected in a composite unit. This is correct because under the International and Inland Navigation Rules, a composite unit consisting of a pushing vessel and a vessel being pushed are required to display the same navigation lights as a single power-driven vessel. This applies when the two vessels are rigidly connected, effectively forming a single unit. The other answer choices are incorrect because a sailing vessel, a vessel towing astern, and a vessel engaged in towing but not underway have different navigation light requirements compared to a composite unit of a pushing and pushed vessel.