Question 680 Rules of the Road

The correct answer is D) All of the above. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a vessel may exhibit lights other than those prescribed by the Rules, as long as the additional lights: 1) Do not impair the visibility or distinctive character of the prescribed lights (as stated in option A). 2) Do not interfere with the keeping of a proper look-out (as stated in option B). 3) Cannot be mistaken for the lights specified elsewhere in the Rules (as stated in option C). All three of these conditions must be met for a vessel to exhibit additional lights beyond the prescribed COLREGS lights. Therefore, option D, "All of the above," is the correct answer.