BOTH INTERNATIONAL & INLAND All of the following vessels are "restricted in their ability to maneuver" EXCEPT a vessel __________.

Correct Answer: Option B — not under command

Under Inland Navigation Rules, for the condition where 'All of the following vessels are "restricted in their ability to maneuver" EXCEPT a vessel', the correct requirement is: 'not under command'. This standard ensures clear navigational intent and collision avoidance.