Question 48 OSV02 - Mate - Offshore Supply Vessels

The Correct Answer is C **Explanation for Option C (Correct Answer):** Option C, "One prolonged and two short blasts at two-minute intervals," is the correct fog signal for a vessel *engaged in fishing* (which is a vessel restricted in her ability to maneuver, or RAM, by function) **while at anchor** in or near an area of restricted visibility. * The required fog signal for a vessel **engaged in fishing** (Rule 35(c)) is one prolonged blast followed by two short blasts, sounded at intervals of not more than two minutes. * This specific signal (prolonged, short, short) indicates a vessel that is not under command (NUC), restricted in its ability to maneuver (RAM), constrained by draft (CBD), sailing, fishing, towing, or pushing. * Since the vessel is engaged in fishing, it must use this signal regardless of whether it is making way or stopped. Being at anchor does not negate its status as a vessel engaged in fishing for the purposes of sound signaling. **Explanation of Why Other Options Are Incorrect:** * **A) A rapid ringing of the bell for five seconds at one-minute intervals:** This is the fog signal required for a vessel **at anchor** (Rule 35(g)). While the vessel is anchored, because it is also *engaged in fishing*, it must use the signal designated for vessels restricted in their maneuverability (Rule 35(c)), which takes precedence over the general "at anchor" signal. * **B) One prolonged and three short blasts at two-minute intervals:** This signal is designated for a vessel being **towed** (Rule 35(e)), or if manned, the last vessel in a tow. It is not the signal for a vessel engaged in fishing. * **D) A sounding of the bell and gong at one-minute intervals:** This is the required signal for a vessel **at anchor exceeding 100 meters** in length (Rule 35(g)). Since the vessel's primary status is "engaged in fishing," it must use the specific signal for that status (prolonged, short, short).