Question 43 OSV02 - Mate - Offshore Supply Vessels

The Correct Answer is A **Explanation of Option A (Correct):** Option A states, "Manual sounding of the bell and gong must always be possible." This is correct under the International Regulations for Preventing Collisions at Sea (COLREGs) and Inland Rules (33 CFR Subchapter E). Rule 33 requires that if a bell or gong is required, its sounding must be **always possible manually**, even if an automatic device is provided. This ensures that the sound signal can be activated immediately and controlled by the crew member on watch, especially in case of equipment failure or the need for a non-standard signal. **Explanation of Other Options (Incorrect):** * **B) A vessel of less than 12 meters in length need not have any sound signaling equipment.** This is incorrect. Rule 33 states that a vessel of less than 12 meters must be provided with "some means of making an efficient sound signal." They are not exempt from having *any* equipment; they just have more flexibility than larger vessels (which require a whistle and, if 20m or more, a bell). * **C) Any vessel over 12 meters in length must be provided with a gong.** This is incorrect. A gong is only required for vessels 100 meters or more in length (Rule 33(b)). Vessels between 12 meters and 100 meters must have a whistle and, if 20 meters or more, a bell. * **D) Automatic sounding of the signals is not permitted.** This is incorrect. COLREGs Rule 33 permits the use of automatic signaling devices (such as fog signal timing devices) *provided* that the mandatory manual control is also available and the device complies with Annex III specifications. Automatic sounding is often used for restricted visibility signals.