Which officer is in charge of overseeing the ship's combat systems?

The officer responsible for overseeing the ship's combat systems is the Combat Systems Officer of the Watch. This role involves managing all operational aspects of the ship's combat systems, which include weapon systems, radar, and communication systems among others. The Combat Systems Officer must ensure that these systems are functioning properly and are ready for engagement as needed.

This position is critical, particularly during combat situations, as it requires a deep understanding of both the technical and tactical elements of the ship’s armament and defense capabilities. The officer must coordinate with other watch sections to maintain situational awareness and ensure effective response to threats.

While other roles such as the Engineering Officer of the Watch and the Navigation Officer have important responsibilities, they focus on different aspects of ship operations. The Engineering Officer primarily oversees the engineering department and machinery operations, while the Navigation Officer is focused on the safe navigation and piloting of the vessel. The Combat Information Center Watch Officer supports tactical operations but does not directly oversee the ship's combat systems. Thus, the designated responsibility of the Combat Systems Officer of the Watch makes this the correct choice.