Question 28 TV03 - Towing Vessels - Western Rivers

The Correct Answer is D **Explanation for D (Correct Answer):** The illustration D010RR depicts a vessel displaying a **diamond shape** (or series of diamond shapes, depending on the exact context, but the single diamond is the key identifying feature for day shapes related to towing length). According to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 24(a)(i) and Annex I, Section 3, a power-driven vessel when towing and the length of the tow (measured from the stern of the towing vessel to the after end of the tow) **exceeds 200 meters** must display the following day signal: * A **diamond shape** where it can best be seen. Therefore, a tugboat displaying a diamond shape signifies that it has a tow exceeding 200 meters in length. **Explanation of Incorrect Options:** * **A) Has a tow that is carrying hazardous cargo:** Hazardous cargo does not typically require the display of a diamond shape under COLREGs. Specialized marks (like flags or signals required by national regulations or dangerous goods codes) would apply, but not the COLREGs diamond shape. * **B) Is at anchor:** A vessel at anchor displays a **ball** shape (or two balls if over 50 meters in length) during the day, not a diamond shape (COLREGs Rule 30). * **C) Is not under command:** A vessel not under command (NUC) displays **two balls** in a vertical line during the day (COLREGs Rule 27). A diamond shape is incorrect for NUC status.