Question 31 GLI04 - Mate of LT 500-1600 GRT

The Correct Answer is C **Explanation for C:** Illustration D010RR depicts three shapes displayed vertically: a diamond shape positioned between two cones (point-to-point). According to both the International Regulations for Preventing Collisions at Sea (COLREGs) Rule 24(a) and the Inland Rules (which generally harmonize with COLREGs regarding towing shapes), a vessel engaged in towing that has a tow exceeding 200 meters in length must display these three shapes. The cone-diamond-cone arrangement clearly signifies a long tow. **Why Option A ("Is at anchor") is incorrect:** A vessel at anchor is required to display a single ball shape in the forepart of the vessel (and depending on size, optionally a second ball aft). It does not display the cone-diamond-cone shapes. **Why Option B ("Is not under command") is incorrect:** A vessel that is not under command (NUC) is required to display two balls vertically, not the cone-diamond-cone shapes. **Why Option D ("Has a tow that is carrying hazardous cargo") is incorrect:** While regulations may exist for towing hazardous cargo, there is no specific mandated day shape defined in COLREGs or standard Inland Rules solely for signifying that the tow itself is carrying hazardous cargo. The shapes displayed are exclusively related to the length of the tow.