Question 809 Rules of the Road

The correct answer is B) only if she is towing astern. According to the Navigation Rules, International and Inland, Rule 24 "Towing and Pushing," a single towing light is required to be carried above the vessel's stern light when the vessel is towing astern. This towing light is required regardless of the length of the tow. The other answer choices are incorrect because: A) the length of the tow does not determine the requirement for a towing light, B) is the correct answer, C) a towing light is not required at all times when towing, and D) the configuration of the towing vessel (whether it is part of a composite unit or not) does not affect the requirement for the towing light.