Anti-Submarine Warfare. Capability to detect, track, and engage submarines.

Military action involving the use of electromagnetic spectrum to disrupt, deceive, or destroy enemy electronic systems.

The upper deck of an aircraft carrier, equipped for aircraft takeoff, landing, and maintenance operations.

Sonar system installed on the hull of a ship, used for underwater detection and navigation by emitting and receiving sound waves.

A mechanical device that converts steam pressure into rotational energy, used to drive shipboard generators or propulsion systems.