Question 1013 Rules of the Road

The correct answer is C) When at anchor, the pilot vessel is only required to sound anchor signals. The International Regulations for Preventing Collisions at Sea (COLREGS) state that a pilot vessel, when at anchor, is only required to sound the appropriate anchor signals and is not required to sound its identification signal. This is specified in Rule 35 of the COLREGS, which outlines the sound signals to be used by vessels in various situations, including when at anchor. The other answer choices are incorrect because they do not accurately reflect the COLREGS requirements. For example, a pilot vessel is not required to sound its identification signal when underway, and it is not required to sound any signal other than the appropriate anchor signal when at anchor.