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

Combined diesel and diesel propulsion system, using two diesel engines driving a single shaft via a combining gearbox.

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.

Unmanned Aerial Vehicle: a remotely piloted or autonomous aircraft used for reconnaissance, surveillance, or combat missions without a human onboard.