Question 1015 Rules of the Road

The correct answer is D) At anchor. According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, a pilot vessel is allowed to continue to sound an identity signal when it is at anchor. This is because the identity signal helps other vessels identify the pilot vessel and avoid potential collisions, which is especially important when the pilot vessel is stationary and not underway. The other options are incorrect because the rules do not permit a pilot vessel to sound an identity signal in those situations. For example, a pilot vessel that is not under command, aground, or being towed would be required to use different sound signals to indicate its status and prevent collisions.