In the event of a man overboard drill, how quickly must personnel muster?

In the context of a man overboard drill, the priority is to ensure the safety of the individual who has fallen overboard, as well as the safety of all personnel involved in the rescue operation. The correct answer emphasizes the urgency of the situation.

Personnel must muster "as quickly as possible" to coordinate a timely and effective response. This rapid gathering allows for immediate deployment of rescue actions, communication, and resource allocation, which are critical in such emergencies. In a real-world scenario, every second counts when someone is in the water, making swift action vital for their survival. This reflects standard maritime safety protocols that prioritize rapid response in emergencies, ensuring that all hands are available to assist in the rescue efforts.

The urgency of the situation inherently rules out options that suggest slower or delayed responses, as they would not align with the operational standards needed in emergencies of this nature.