BOTH INTERNATIONAL & INLAND You are operating in restricted visibility and hear a signal of a rapidly ringing bell followed by the rapid sounding of a gong. It could be a __________.

Correct Answer: Option D — 300-meter power-driven vessel at anchor

Rule 35(f) requires vessels of 100 meters or more in length at anchor to sound a rapid bell ring forward followed by a rapid gong sounding aft, applicable to a massive 300-meter power-driven vessel operating in restricted visibility.