#sonar

• Trimming process — The act of trimming, cutting, or shaping and its result; the rudimentary process of shaping or finishing the edges of a piece of wood or a traditional textile material. This regional technical term defines the manual physical labor performed in rural Carpathian workshops.
• Anti-submarine — Designed, equipped, or deployed for the detection, localization, tracking, and destruction of enemy submarines. The term applies to a wide range of defense equipment, including surface vessels, specialized aircraft, advanced sonar systems, and specific weaponry (such as guided torpedoes or depth charges), aimed at ensuring the security of maritime routes and military fleets.
• Asdic — An acoustic underwater detection apparatus used on naval vessels for the structural localization of submarines, wrecks, or other submerged objects, based on the emission and reception of ultrasonic waves; a precursor system to modern sonar. It also represents a historical acronym derived from the British research committee that developed it during World War I.