Question 47 TV02 - Towing Vessels - Great Lakes and Inland

The Correct Answer is D **Explanation for Option D (Correct):** Option D, "One prolonged followed by three short blasts," is the required fog signal for a vessel being towed, provided it is manned, whether under the International Regulations for Preventing Collisions at Sea (COLREGs) Rule 35(e) or the corresponding Inland Rules. This signal is given instead of the normal signal for a power-driven vessel (one prolonged blast) or the normal signal for a vessel not under command/restricted in ability to maneuver (one prolonged followed by two short blasts). The additional short blast signifies the vessel is being towed. **Explanation for Other Options (Incorrect):** * **A) One prolonged followed by two short blasts:** This is the fog signal required for a vessel not under command, a vessel restricted in its ability to maneuver, a sailing vessel, a fishing vessel, or a vessel engaged in dredging/underwater operations (COLREGs Rule 35(c)). While a towed vessel is restricted, Rule 35(e) provides a specific signal for a vessel being towed, making this option incorrect. * **B) Two prolonged blasts:** This is the signal required for a vessel at anchor (COLREGs Rule 35(g)), although it is typically used as a warning of position when the required bell/gong signals are given. It is not the signal for a vessel being towed. * **C) One prolonged followed by one short blast:** This signal is not a standard fog signal defined in Rule 35. The signal for a power-driven vessel making way is one prolonged blast (Rule 35(a)).