Question 42 ONC05 - Master or Mate of LT 200 GRT

The Correct Answer is C ### Explanation of Why Option C is Correct: **C) Any means of making an efficient sound signal** is correct because the minimum requirements for sound signaling equipment are based on the length of the vessel as defined in Rule 33 (Equipment for Sound Signals) of the COLREGs (International Regulations for Preventing Collisions at Sea). * **Vessels less than 12 meters in length (like a 10-meter vessel):** Rule 33(a) states that a vessel of 12 meters or more in length must be provided with a whistle and a bell. However, Rule 33(b) specifically addresses smaller vessels: "A vessel of less than 12 meters in length shall not be obliged to carry the sound signaling appliances prescribed in paragraph (a) of this Rule, but if she does not, she shall be provided with **some other means of making an efficient sound signal**." Since a 10-meter vessel is less than 12 meters, it is not required to carry a specific whistle or bell, but it must be able to make an efficient sound signal (e.g., a portable air horn, a loud whistle, etc.). ### Explanation of Why Other Options Are Incorrect: **A) A bell only:** Incorrect. While a bell is required for vessels 100 meters or more (along with a whistle), it is not the *minimum* required equipment for a 10-meter vessel. The requirement is only for "some other means of making an efficient sound signal." **B) A whistle only:** Incorrect. A whistle is required for vessels 12 meters or more. A 10-meter vessel is not legally obliged to carry a whistle. **D) A bell and a whistle:** Incorrect. This equipment (whistle and bell) is the requirement for vessels 12 meters or more, and the bell must be carried by vessels 50 meters or more (if no bell is available, another efficient sound signal can be used), but a bell and whistle together are mandatory for vessels 12 meters up to 100 meters. For a 10-meter vessel, this is far more than the minimum legal requirement.