Question 678 Rules of the Road

The correct answer is C) do not interfere with the keeping of a proper look-out. The reasoning for this is that the International Regulations for Preventing Collisions at Sea (COLREGS) state that a vessel may exhibit lights other than those prescribed by the Rules, as long as such lights do not impair the visibility or distinctive character of the prescribed lights. Essentially, the additional lights must not interfere with the vessel's ability to maintain a proper lookout, which is a key safety requirement. The other answer choices are incorrect because they do not accurately reflect the specific COLREGS requirement for additional lights. The color of the lights (choice A) and their range (choice B) are not the defining factors, as long as they do not impair the visibility of the prescribed navigation lights.