Question 517 Rules of the Road

The correct answer is C) ball-diamond-ball on the towing vessel. This is because the tow shown is less than 200 meters in length and severely restricted in its ability to deviate from its course, which means it is considered a "Vessel Restricted in its Ability to Maneuver" under both the International and Inland Navigation Rules. The appropriate day shape for such a vessel is a ball, diamond, ball displayed from the towing vessel. The other options are incorrect because a diamond shape is not the appropriate day shape for the tow or towing vessel in this scenario. The ball-diamond-ball configuration on the towing vessel properly indicates that the tow is restricted in its maneuverability.