Question 31 ONC04 - Mate of LT 500-1600 GRT

The Correct Answer is C **Why option C ("Has a tow that exceeds 200 meters in length") is correct:** The illustration D010RR depicts a vessel displaying a **diamond shape** (day signal). According to both the International Regulations for Preventing Collisions at Sea (COLREGs) and Inland Rules (Rule 24, Annex I – Positioning and Technical Details of Lights and Shapes), a vessel when towing or pushing ahead, and the length of the tow from the stern of the towing vessel to the after end of the tow exceeds 200 meters, must display a black diamond shape where it can best be seen. Therefore, the presence of the diamond shape signifies a long tow. **Why the other options are incorrect:** * **A) Is at anchor:** A vessel at anchor displays a black ball (not a diamond shape) in the fore part of the vessel. * **B) Is not under command:** A vessel not under command displays two black balls (not a diamond shape) in a vertical line where they can best be seen. * **D) Has a tow that is carrying hazardous cargo:** There is no specific day signal required by COLREGs or standard Inland Rules specifically for a vessel towing hazardous cargo. The shape relates only to the physical length of the tow.