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

Combined diesel-electric and gas propulsion system integrating diesel engines for cruising and gas turbines for high-speed operation.

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 system of hydrophones towed behind a vessel to detect submarines and torpedoes, minimizing interference from the ship's self-noise.