BOTH INTERNATIONAL & INLAND A power-driven vessel is underway in fog but is stopped and making no way through the water. What is the required fog signal?

Correct Answer: Option B — Two prolonged blasts at not more than two minute intervals

Rule 35(b) requires a power-driven vessel underway but stopped and making no way through the water to sound two prolonged blasts at intervals of not more than two minutes. This signal informs other vessels that you are a power-driven vessel but are currently dead in the water.