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.

Radar system using multiple small antennas whose signals are combined to create a steerable beam without physical movement, enabling rapid scanning and tracking of multiple targets.

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

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