BOTH INTERNATIONAL & INLAND A vessel transferring cargo while underway is classified by the Rules as a vessel __________.

Correct Answer: Option D — restricted in her ability to maneuver

Under Inland Navigation Rules, for the condition where 'A vessel transferring cargo while underway is classified by the Rules as a vessel', the correct requirement is: 'restricted in her ability to maneuver'. This standard ensures clear navigational intent and collision avoidance.