What command is given to deploy over the side during a tactical boarding?

The command "Prepare to board!" is utilized to signal crew members to get ready for a tactical boarding operation. This phrase effectively conveys the intent to deploy personnel over the side of the vessel in a controlled manner, allowing the crew to transition into boarding actions efficiently. It emphasizes readiness and sets the stage for coordination during the operation, ensuring everyone is mentally and physically prepared for the tasks that follow.

In tactical environments, issuing direct commands such as this one is crucial for maintaining clear communication and operational clarity, helping to reduce confusion during critical moments. The command indicates that immediate actions will follow, aligning the crew's focus on executing the boarding procedure securely and effectively.

The other options focus on different situations or objectives, such as raising alertness or responding to emergencies, which do not specifically address the preparedness for boarding operations.