Question 25 AB01 - Able Seafarer

The Correct Answer is C **Explanation for Option C (A manned vessel being towed):** According to both the International Regulations for Preventing Collisions at Sea (COLREGs) and Inland Rules (Rule 35(e)), a vessel being towed, if she is manned, must sound a specific fog signal. This signal is **one prolonged blast followed by three short blasts**. This distinct signal informs nearby vessels that the signal originates from the vessel at the end of the towline, not the towing vessel itself, helping to clarify the composition and extent of the tow. **Explanation for Incorrect Options:** * **A) An unmanned vessel being towed:** An unmanned vessel (or one that is barely manned and the personnel are not effectively operating the equipment) being towed is generally not required to sound a fog signal. The towing vessel (D) would sound the signal for the tow (one prolonged followed by two short blasts) in this case. * **B) A vessel at anchor:** A vessel at anchor in fog sounds the rapid ringing of a bell for 5 seconds every minute (for vessels less than 100 meters) or the rapid ringing of a bell and sounding of a gong (for vessels 100 meters or more). It does not sound one prolonged blast followed by three short blasts. * **D) A towing vessel:** A towing vessel, when towing in restricted visibility, must sound the signal for a power-driven vessel underway (one prolonged blast) immediately followed by **two short blasts** (Rule 35(c)), not three short blasts. The three short blasts signal is reserved for the manned vessel being towed.