INTERNATIONAL ONLY You are underway on the high seas in restricted visibility. You hear a fog signal of one prolonged and two short blasts. Which vessel would Not sound this signal?

Correct Answer: Option C — A vessel being towed

Rule 35(c) requires a vessel restricted in her ability to maneuver, a vessel constrained by her draft, a vessel engaged in fishing, or a vessel engaged in towing to sound one prolonged followed by two short blasts. A vessel being towed is not included in this specific list.