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  2. Fire alarm notification appliance - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_notification...

    The standard fire alarm sound used in most of North America [citation needed]. Coding refers to the pattern or tones a notification appliance sounds in and is controlled either by the panel or by setting jumpers or DIP switches on the notification appliances. The majority of audible notification appliances installed prior to 1996 produced a ...

  3. Passive Underwater Fire Control Feasibility System - Wikipedia

    en.wikipedia.org/wiki/Passive_Underwater_Fire...

    Passive Underwater Fire Control Feasibility System (or Study) (PUFFS) is a passive sonar system for submarines. It was designated AN/BQG-4 and was primarily installed on United States Navy conventional submarines built in the 1950s beginning with the Tang class , and also those converted to GUPPY III or otherwise modernized in the 1960s.

  4. CAPTAS-4 - Wikipedia

    en.wikipedia.org/wiki/CAPTAS-4

    The CAPTAS-4 is a towed array sonar developed by Thales Underwater Systems to equip first-rank surface combatants.Manufactured in Brest, France, it represents the high-end and most powerful system of the company's CAPTAS (Combined Active and Passive Towed Array Sonar) line of products [1] and equips several first-rank warships of the French Navy as well as those of various export customers.

  5. AN/SQS-26 - Wikipedia

    en.wikipedia.org/wiki/AN/SQS-26

    AN/SQS-26 was a United States Navy surface ship, bow mounted, low frequency, active/passive sonar developed by the Naval Underwater Sound Laboratory [1] and built by General Electric and the EDO Corporation. At one point, it was installed on 87 [2] US Navy warships from the 1960s to the 1990s and may still be in use on ships transferred to ...

  6. Ship gun fire-control system - Wikipedia

    en.wikipedia.org/wiki/Ship_gun_fire-control_system

    Mark 37 Director c1944 with Mark 12 (rectangular antenna) and Mark 22 "orange peel" Ship gun fire-control systems (GFCS) are analogue fire-control systems that were used aboard naval warships prior to modern electronic computerized systems, to control targeting of guns against surface ships, aircraft, and shore targets, with either optical or radar sighting.

  7. Sonar 2076 - Wikipedia

    en.wikipedia.org/wiki/Sonar_2076

    Support systems include command consoles, upgraded radio communications, upgraded signature reduction, and new flexi couplings to reduce self noise. Sonar 2076 is designed to be fitted into both the new Astute-class submarine and the existing Trafalgar-class submarine, allowing the Royal Navy's entire submarine fleet to have a common sonar system.

  8. HMCS Victoria (SSK 876) - Wikipedia

    en.wikipedia.org/wiki/HMCS_Victoria_(SSK_876)

    This gave the submarines the ability to fire the Gould Mk 48 Mod 4 torpedo. [3] In 2014, the Government of Canada purchased 12 upgrade kits that will allow the submarines to fire the Mk 48 Mod 7AT torpedoes. [7] These radar and sonar systems were later upgraded with the installation of the BAE Type 2007 array and the Type 2046 towed array.

  9. Towed array sonar - Wikipedia

    en.wikipedia.org/wiki/Towed_array_sonar

    The DUBV 43C towed array sonar of La Motte-Picquet.. A towed array sonar is a system of hydrophones towed behind a submarine or a surface ship on a cable. [1] Trailing the hydrophones behind the vessel, on a cable that can be kilometers long, keeps the array's sensors away from the ship's own noise sources, greatly improving its signal-to-noise ratio, and hence the effectiveness of detecting ...

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