BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel restricted in her ability to maneuver, at anchor, would sound which fog signal?

Correct Answer: Option A — One prolonged and two short blasts every two minutes

Rule 35(c) states that a vessel restricted in her ability to maneuver, when at anchor, shall sound the signal prescribed in Rule 35(c) (one prolonged and two short blasts) rather than the standard anchor bell signal. This identifies the vessel's specific status and limited capability to move or avoid collision.