BOTH INTERNATIONAL & INLAND A partly submerged vessel or object being towed, which is not readily noticeable, shall show __________.

Correct Answer: Option D — a diamond shape

Under Inland Navigation Rules, for the condition where 'A partly submerged vessel or object being towed, which is not readily noticeable, shall show', the correct requirement is: 'a diamond shape'. This standard ensures clear navigational intent and collision avoidance.