Question 46 GLI06 - Master or Mate of LT 100 GRT

The Correct Answer is D. ### Explanation of D (All of the above) Option D is correct because all three listed vessels—a vessel restricted in its ability to maneuver, a sailing vessel, and a vessel not under command—are specifically required by the International Regulations for Preventing Collisions at Sea (COLREGs) Rule 35 (and corresponding Inland Rules) to sound the distinctive fog signal of **one prolonged blast followed by two short blasts** when making way or, in the case of a vessel restricted in its ability to maneuver, when anchored. This signal is typically used by vessels that are either less maneuverable than a power-driven vessel (like a towing vessel or a fishing vessel) or completely unable to maneuver (like an NUC vessel). * **A) A vessel restricted in its ability to maneuver (RAM):** COLREGs Rule 35(c) requires a RAM vessel to sound this signal when underway. Rule 35(g) requires a RAM vessel at anchor to sound both the anchor signal *and* this one prolonged plus two short signal. * **B) A sailing vessel underway:** COLREGs Rule 35(c) specifically lists a sailing vessel as requiring this signal. * **C) A vessel not under command (NUC):** COLREGs Rule 35(c) specifically lists an NUC vessel as requiring this signal. ### Explanation of why A, B, and C are incorrect (alone) While A, B, and C are all individually correct examples of vessels required to use this fog signal, they are incorrect as the sole answer because the question asks which vessel(s) are required, and the complete set of correct examples is offered by Option D. Since A, B, and C are all valid answers, the most accurate selection is D ("All of the above").