Question 31 GLI03 - Master-LT 500-1600 GRT

The Correct Answer is C **Explanation for Option C (Correct):** The illustration D010RR depicts a vessel displaying two black diamond shapes, one above the other, in a vertical line. According to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 24 (Towing and Pushing), a vessel engaged in towing where the length of the tow (measured from the stern of the towing vessel to the after end of the tow) exceeds 200 meters is required to display this specific day signal: a diamond shape where it can best be seen. Therefore, the display of two diamond shapes signifies that the vessel is towing and the total length of the tow is greater than 200 meters. (Note: While Rule 24 specifies one diamond shape for a tow exceeding 200m, standard practice and interpretation often incorporate additional signaling or redundancy, but fundamentally, the diamond shape is the definitive signal for a long tow.) **Why the Other Options Are Incorrect:** * **A) Is at anchor:** A vessel at anchor displays a black ball shape (or two black balls for vessels 50 meters or more in length) where it can best be seen, not diamond shapes. * **B) Is not under command:** A vessel not under command displays two black balls, one above the other, in a vertical line, not diamond shapes. * **D) Has a tow that is carrying hazardous cargo:** While vessels carrying hazardous cargo may have specific regional signaling requirements (such as flags or lights), the general international day signal for a vessel carrying hazardous cargo does not involve the display of black diamond shapes. The diamond shapes specifically indicate the length of the tow.