Question 46 FCP01 - First Class Pilot

The Correct Answer is D Option D ("All of the above") is correct because the described fog signal—**one prolonged blast followed by two short blasts**—is the required signal for various vessels that are unable to comply with the standard maneuvering rules or whose movement is restricted, regardless of whether the rules applied are International (COLREGs Rule 35(c)) or Inland. This specific signal (one prolonged and two short blasts at intervals of not more than 2 minutes) is mandated for the following categories of vessels, which cover all vessels listed in A, B, and C: * **A vessel restricted in its ability to maneuver (RAM)**: This includes vessels engaged in dredging, surveying, etc. If a RAM vessel is also **at anchor**, Rule 35(c) still applies to its operational status. (Covers A) * **A sailing vessel underway**: Rule 35(c) specifically lists sailing vessels. (Covers B) * **A vessel not under command (NUC)**: Rule 35(c) specifically lists vessels not under command. (Covers C) * **A vessel constrained by its draft (International only)** * **A fishing vessel** * **A towing or pushing vessel (if the tow signal is not used)** *** **Why the other options are technically incorrect as the sole answer:** The question asks which vessel(s) is/are required to sound the signal, implying that if the signal applies to multiple listed vessels, the broader answer (D) must be chosen. * **A) A vessel restricted in its ability to maneuver, at anchor:** While this vessel must sound the signal, selecting only A would incorrectly exclude the sailing vessel and the vessel not under command, which also must sound this signal. * **B) A sailing vessel underway:** While this vessel must sound the signal, selecting only B would incorrectly exclude the vessel restricted in its ability to maneuver (at anchor) and the vessel not under command. * **C) A vessel not under command:** While this vessel must sound the signal, selecting only C would incorrectly exclude the sailing vessel and the vessel restricted in its ability to maneuver (at anchor).