Question 42 ONC06 - Master LT 100 GRT

The Correct Answer is C ### Why Option C is Correct: **C) Any means of making an efficient sound signal** is the correct requirement for a vessel of 10 meters in length under the International Regulations for Preventing Collisions at Sea (COLREGs), which apply to both international and inland waters (often through specific adopting regulations). Rule 33 (Equipment for Sound Signals) of COLREGs specifies the requirements: * **Vessels less than 12 meters in length** (which includes a 10-meter vessel) are *not* required to carry the specific, standardized sound signaling appliances (whistle and/or bell) mandated for larger vessels. * Instead, they must be provided with **some other means of making an efficient sound signal.** This ensures that even the smallest vessels can comply with the maneuvering and warning signal requirements laid out in Rule 34 and Rule 35. ### Why Other Options Are Incorrect: **A) A bell only:** This is incorrect. A bell is required in addition to a whistle for vessels 100 meters or more in length, and sometimes just a bell for vessels 50 meters or more. It is not the *minimum* requirement for a 10-meter vessel. **B) A whistle only:** This is incorrect. A standardized whistle is required for vessels 12 meters or more in length. For vessels less than 12 meters, a whistle is not mandatory, and they can use simpler means of signaling. **D) A bell and a whistle:** This is incorrect. This combination is generally required for vessels 50 meters or more in length (under Rule 33(b)). It is far more than the minimum requirement for a 10-meter vessel.