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

Correct Answer: Option B — one prolonged and two short blasts every two minutes

Under Inland Rule 34(a), two short blasts indicates 'I intend to leave you on my starboard side' (starboard-to-starboard pass), requiring an identical two short blasts confirmation.