Question 42 GLI06 - Master or Mate of LT 100 GRT

The Correct Answer is C ### Why Option C is Correct: **C) Any means of making an efficient sound signal** The International Regulations for Preventing Collisions at Sea (COLREGs), Rule 33, specifies the sound signaling equipment requirements. For vessels less than 12 meters in length (which includes a vessel 10 meters in length): * **Rule 33(1) (Whistle and Bell):** Vessels 12 meters or more in length must be provided with a whistle and a bell (and a gong if 100 meters or more). * **Rule 33(2) (Small Vessels):** Vessels less than 12 meters in length are **not** required to carry the specific equipment (whistle and bell) mentioned in paragraph (1). However, they must be provided with **some other means of making an efficient sound signal**. This signal must be audible and effective for indicating the vessel's position or intentions (e.g., a compressed air horn, a mechanical fog horn, or a mouth-operated whistle, provided it is efficient). ### Why the Other Options Are Incorrect: **A) A bell only** Incorrect. A bell is required only for vessels 12 meters or more in length. For vessels under 12 meters, a bell is not a minimum requirement, and a bell alone often does not constitute an "efficient sound signal" for maneuvering or warning purposes in restricted visibility. **B) A whistle only** Incorrect. A whistle is required only for vessels 12 meters or more in length. While an efficient manual whistle could satisfy the requirement for an "efficient sound signal" (Option C), a specific "whistle" (meeting regulatory audibility standards, often mechanized) is not the *minimum equipment required* for a vessel under 12 meters. The requirement is functional, not prescriptive of a specific instrument. **D) A bell and a whistle** Incorrect. This combination is the minimum requirement for vessels 12 meters or more in length. Vessels under 12 meters have a much less prescriptive requirement.