Question 52 OSV01 - Master/Chief Mate - Offshore Supply Vessels

The Correct Answer is D **Explanation for Option D (All of the above):** Option D is correct because all listed activities (A, B, and C) represent legally defined exceptions to mandated crew rest hours and standard working periods under international maritime labor conventions (such as the Maritime Labour Convention, 2006, and STCW regulations). The authority granted to the Master ensures that essential, time-sensitive, and safety-critical operations can be performed immediately, regardless of whether they fall within the crew's scheduled rest period. Since the Master is authorized to require work for safety (B), maneuvering (C), and mandatory emergency training (A), the comprehensive answer is D. **Explanation of Why Options A, B, and C are Incorrect (as standalone answers):** * **A) Performing fire, lifeboat or other drills in port or at sea:** This is a correct statement in isolation, as drills are mandatory safety functions that the Master can require regardless of rest hours. However, it is an incomplete answer because it fails to include the other critical functions (B and C) for which the crew can also be required to work. * **B) Performing work necessary for the safety of the vessel, its passengers, crew or cargo:** This is a correct statement, covering genuine emergencies, immediate repairs, or responses to heavy weather. However, it is an incomplete answer because it does not cover the essential, non-emergency operational requirements related to navigation and maneuvering (C). * **C) Maneuvering, shifting berth, mooring and unmooring:** This is a correct statement, as these are critical phases of navigation that require a full complement of qualified crew members. However, it is an incomplete answer because it omits the necessity of emergency response work (B) and mandatory safety training (A).