Question 47 GLI07 - OUPV

The Correct Answer is D **Explanation for Option D (Correct Answer):** The required fog signal for a vessel being towed, when manned, is defined by Rule 35(e) of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies to both international and inland waters (unless a specific local rule modifies it, which is rare for this signal). Rule 35(e) states: "A vessel being towed, if the vessel is manned, shall at intervals of not more than 2 minutes, sound **one prolonged blast followed by three short blasts**." This distinctive signal indicates the status of the vessel (being towed) and is required when the vessel is manned, providing crucial information about its limited maneuverability to other vessels in restricted visibility. **Explanation for Why Other Options are Incorrect:** * **A) One prolonged followed by two short blasts:** This is the required signal for a vessel **not under command** (NUC), a vessel **restricted in her ability to manoeuvre** (RAM), a vessel **constrained by her draught** (CBD), a **sailing vessel**, or a **fishing vessel** (when not at anchor/aground). It is not the signal for a vessel being towed. (Rule 35(c)). * **B) Two prolonged blasts:** This signal is required for a **vessel pushing ahead** or a **vessel being towed** (when the length of the tow exceeds 200 meters). It is sounded by the *power-driven vessel* making the tow/push, not the manned vessel being towed. (Rule 35(c)). * **C) One prolonged followed by one short blast:** This is the required signal for a **power-driven vessel making way through the water**. (Rule 35(a)).