Question 967 Rules of the Road

The correct answer is A) At anchor. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a vessel at anchor must sound a fog signal of one short, one prolonged, and one short blast in periods of restricted visibility. This signal is used to indicate the vessel's position and warn other vessels in the area. The other options are incorrect because the described fog signal is not the appropriate signal for a vessel that is not under command (B), or a vessel that is towing another vessel (C). Those situations have different fog signal requirements under the COLREGS.