Question 785 Rules of the Road

The correct answer is A) 10-meter sailing vessel. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a sailing vessel of less than 20 meters in length may exhibit a single all-around white light instead of the separate sidelights and stern light. This combined lantern fulfills the navigation light requirements for such a small sailing vessel under both the international and inland navigation rules. The other answer choices are incorrect because vessels over 20 meters in length are required to exhibit the separate sidelights and stern light configurations, as specified in the COLREGS. The fishing vessel, power-driven vessel, and pilot vessel described in the other options do not meet the size criteria for the combined lantern arrangement.