Who is authorized to secure from a security alert on a naval vessel?

The Command Duty Officer is the individual responsible for maintaining security and operational readiness on a naval vessel during their watch. This officer is specifically assigned to oversee the security response, ensuring that appropriate protocols are followed in the event of a security alert.

While the Ship's Captain ultimately has authority over the vessel and is responsible for its overall command, the Command Duty Officer acts on their behalf and manages day-to-day operations, including security situations. The Chief of Staff typically handles broader staff and strategic issues, and the Executive Officer assists the Captain with administration and personnel matters but does not have the direct responsibility for immediate security responses in the same way as the Command Duty Officer. Thus, the Command Duty Officer is the correct choice for securing a response to a security alert on a naval vessel.