Question 47 TV01 - Towing Vessels - Oceans or Near Coastal

The Correct Answer is D. **Why Option D ("One prolonged followed by three short blasts") is correct:** Rule 35(e) of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies to both international and inland waters, specifies the fog signal for a vessel being towed. A manned vessel being towed must sound the required signal for a power-driven vessel making way through the water (one prolonged blast) immediately followed by the signal that indicates a vessel being towed (three short blasts). **Why each of the other options is incorrect:** * **A) One prolonged followed by two short blasts:** This is the required fog signal for a vessel **not under command**, a vessel **restricted in her ability to maneuver** (when at anchor, it's different), a **sailing vessel**, a vessel engaged in **fishing**, or a vessel engaged in **towing or pushing** (when maneuvering or hampered by the tow). * **B) Two prolonged blasts:** This is the required fog signal for a power-driven vessel **under way but stopped and making no way** through the water. * **C) One prolonged followed by one short blast:** This signal combination (or variants like one prolonged, two short) is often used in maneuvering signals or warning signals in sight of one another (Rule 34), but it is not the standard mandated fog signal for a vessel being towed.