Which procedure should the crew follow during a rapid shift in weather conditions?

In the context of a rapid shift in weather conditions, the most prudent course of action is to return to the pier immediately. This choice prioritizes the safety of the crew and the vessel. Sudden weather changes can lead to hazardous conditions at sea, including high winds, rough seas, and reduced visibility, which can compromise navigation and operational safety.

Returning to the pier allows for better control over the vessel, as it minimizes exposure to the unpredictable nature of adverse weather. It also provides the crew the opportunity to assess the situation, ensure that all safety protocols are followed, and wait for the weather to stabilize before resuming operations.

While adjusting mission parameters or increasing vessel speed might seem like viable options under certain conditions, they do not address the immediate risks posed by severe weather changes. Resuming normal operations in such a scenario could lead to dangerous situations, endangering both personnel and the vessel. Therefore, prioritizing safety through returning to the pier is the ideal response in the face of rapidly deteriorating weather.