Question 34 ONC02 - Second Mate/Third Mate Unlimited Tonnage

The Correct Answer is A. A tugboat displaying the shape shown in illustration D010RR is displaying a **diamond shape**. Under the COLREGs (International Regulations for Preventing Collisions at Sea) Rule 24 (Towing and Pushing), any vessel engaged in a towing operation where the length of the tow (measured from the stern of the towing vessel to the aftermost end of the tow) exceeds **200 meters** must display a diamond shape where it can best be seen. Therefore, the statement "Has a tow that exceeds 200 meters in length" is true. **Why the other options are incorrect:** B) **Has a tow that is carrying hazardous cargo:** Vessels carrying dangerous goods (hazardous cargo) do not display a specific diamond shape under COLREGs to indicate the nature of the cargo. They might display signals related to being restricted in their ability to maneuver, but not solely for carrying hazardous cargo. C) **Is at anchor:** A vessel at anchor displays black ball shapes. Two black balls in a vertical line are displayed if the vessel is a dredge or underwater operation restricted in its ability to maneuver while anchored, but a standard vessel at anchor displays one black ball. D) **Is not under command:** A vessel not under command displays two black balls in a vertical line. A vessel displaying a diamond shape is typically engaged in towing, which means it is under command, though perhaps restricted in its ability to maneuver.