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  2. AN/AQS-13 - Wikipedia

    en.wikipedia.org/wiki/AN/AQS-13

    AN/AQS-13 dipping sonar deployed from an SH-3 Sea King. The AN/AQS-13 series was a helicopter dipping sonar system for the United States Navy.These systems were deployed as the primary inner zone anti-submarine warfare (ASW) sensor on aircraft carrier based helicopters for over five decades. [1]

  3. Algerian frigate Erradii - Wikipedia

    en.wikipedia.org/wiki/Algerian_frigate_Erradii

    The ASW helicopters are fitted with Compact FLASH dipping sonar and carried MU90 torpedoes, while the ASuW helicopters could carry a loadout of Mokopa air-to-surface missiles and a FN M3M 12.7 mm heavy machine gun. The ship has one seaboat and one rigid-hulled inflatable boat. [3]

  4. HELRAS - Wikipedia

    en.wikipedia.org/wiki/HELRAS

    HELRAS or the Helicopter Long Range Active Sonar is a naval helicopter undersea sensor, a dipping sonar (a form of towed array sonar), deployed by helicopters of many naval air forces around the world to detect submarines; it is a form of geophysical MASINT.

  5. Algerian frigate El Moudamir - Wikipedia

    en.wikipedia.org/wiki/Algerian_frigate_El_Moudamir

    The ASW helicopters are fitted with Compact FLASH dipping sonar and carried MU90 torpedoes, while the ASuW helicopters could carry a loadout of Mokopa air-to-surface missiles and a FN M3M 12.7 mm heavy machine gun. The ship has one seaboat and one rigid-hulled inflatable boat. [2]

  6. Thales Underwater Systems - Wikipedia

    en.wikipedia.org/wiki/Thales_Underwater_Systems

    The French entity, Thomson Sintra, brought in by Thomson-CSF, was the European leader in defence-related sonar systems and the world's second after Lockheed Martin Loral, with annual sales of 1.5 billion francs, split between submarine sonars (35%), anti-submarine warfare systems (27%), airborne sonars (18%) and mine warfare (15%).

  7. Type 037 corvette - Wikipedia

    en.wikipedia.org/wiki/Type_037_corvette

    The biggest improvement, however, it's in the sonar system. Original SJD-3 sonar on earlier Type 037 class submarine chaser is replaced by a 13 kHz (2 frequency ranges) French Thomson Sintra SS-12/DIP 12 hull mounted (HM)/variable depth sonar (VDS). DIP 12, the VDS version weigh 4 tons and has a 200-meter cable with towing speed of 16 kn, and ...

  8. Naval Physical and Oceanographic Laboratory - Wikipedia

    en.wikipedia.org/wiki/Naval_Physical_and...

    DRDO is planning a dedicated satellite for the coastal surveillance system. All the future inductions planned by the Indian Navy are to be fitted with NPOL designed sonars. The sonars under development are HUMSA NG (upgrade of the HUMSA sonar), the submarine sonars USHUS (for the Sindhugosh class) and PAYAL for the Arihant class. [1]

  9. Mirka-class frigate - Wikipedia

    en.wikipedia.org/wiki/Mirka-class_frigate

    processing systems: Radar Don-2; Slim Net ; Hawk Screech; Sonar - Herkules hull mounted & dipping sonar; Armament: 4 76 mm (3 in) guns (2x2) 4 RBU-6000 anti-submarine rocket launchers (2 in some ships) 5 406 mm (16 in) anti-submarine torpedo tubes