Question 46 GLI05 - Master or Mate of LT 200 GRT

The Correct Answer is D. The question asks which vessel(s) are required to sound a fog signal of **one prolonged followed by two short blasts**. This specific signal is defined in both the International (COLREGS Rule 35(c)) and Inland Rules for: 1. **A vessel restricted in its ability to maneuver (RAM)** 2. **A vessel constrained by its draft (International only)** 3. **A vessel engaged in towing or pushing (if she is RAM)** 4. **A vessel not under command (NUC)** 5. **A fishing vessel** 6. **A sailing vessel** 7. **A vessel engaged in dredging or underwater operations** Option D ("All of the above") is correct because: * **A vessel restricted in its ability to maneuver** (Option A, though noted as "at anchor," the signal requirement applies to RAM vessels underway, but the signal in question is tied to the vessel's status as RAM/NUC/Sailing, etc., not necessarily its mode of operation—however, the signal for RAM vessels underway is explicitly one prolonged followed by two short blasts (Rule 35(c)). Since the signal is associated with the RAM status, it must be included.) * **A sailing vessel underway** (Option B) is explicitly required by Rule 35(c) to sound one prolonged followed by two short blasts. * **A vessel not under command** (Option C) is also explicitly required by Rule 35(c) to sound one prolonged followed by two short blasts. Since the required signal applies to the categories listed in A, B, and C (assuming A refers to a RAM vessel underway, as required by the rule), D encompassing all of them is the correct choice. *** Briefly explaining why the other options are technically insufficient (though they all represent vessels that *do* use this signal): * **A) A vessel restricted in its ability to maneuver, at anchor:** While a RAM vessel sounds this signal when underway, a vessel restricted in its ability to maneuver **at anchor** is required to sound the anchor signal (Rule 35(g): rapid ringing of the bell for 5 seconds every minute) followed by her specific RAM signal (Rule 35(c): one prolonged plus two short blasts). However, since this option only represents one of three applicable vessel types listed, it is insufficient as the overall answer. * **B) A sailing vessel underway:** This vessel *does* sound the signal, but this option omits the other applicable vessels (RAM and NUC). * **C) A vessel not under command:** This vessel *does* sound the signal, but this option omits the other applicable vessels (RAM and Sailing).