Question 43 GLI04 - Mate of LT 500-1600 GRT

The Correct Answer is A **Explanation for Option A (Correct):** Option A is correct because the International Regulations for Preventing Collisions at Sea (COLREGS), Rule 33, requires that the equipment for sound signals must allow for manual operation even if the vessel is fitted with automated signaling devices. Specifically, regarding the bell (required for vessels 100 meters or more in length) and, where applicable, the gong, it must always be possible to sound them manually in an emergency or during periods of reduced visibility. **Explanation of Incorrect Options:** **B) A vessel of less than 12 meters in length need not have any sound signaling equipment.** This is incorrect. COLREGS Rule 33(b) states that a vessel of less than 12 meters in length is not obliged to comply with the specific requirements of sound signaling appliances (whistle, bell), but *must* be provided with some means of making an efficient sound signal. They cannot dispense with sound signaling entirely. **C) Any vessel over 12 meters in length must be provided with a gong.** This is incorrect. The requirement for a gong is specified in Annex III, paragraph 1(b) for vessels of **100 meters or more** in length, and is generally required only if the vessel is so long that the required bell is not placed where its sound is effective. The primary requirements for vessels over 12 meters are a whistle and a bell (the bell is required only for vessels 50 meters or more). **D) Automatic sounding of the signals is not permitted.** This is incorrect. COLREGS allows for the fitting of automated fog signal sounding devices (often called "fog horns" or "automatic whistles") provided that the signals comply with the regulations and that the equipment also allows for manual operation (Rule 33).