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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. 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.

  4. AN/UQQ-2 Surveillance Towed Array Sensor System - Wikipedia

    en.wikipedia.org/wiki/AN/UQQ-2_Surveillance...

    The AN/UQQ-2 Surveillance Towed Array Sensor System (SURTASS), colloquially referred to as the ship's "Tail", is a towed array sonar system of the United States Navy. SURTASS Twin-Line consists of either the long passive SURTASS array or the Twin-line array, consisting of two shorter passive arrays towed side by side.

  5. How much does a boat cost to purchase and own? - AOL

    www.aol.com/finance/much-does-boat-cost-purchase...

    Boat insurance: It typically costs around 1 to 5 percent of the boat’s value. So, using the example above, the average annual cost of insurance for a $20,000 boat would be between $200 and ...

  6. Sonar - Wikipedia

    en.wikipedia.org/wiki/Sonar

    Passive sonar systems may have large sonic databases, but the sonar operator usually finally classifies the signals manually. A computer system frequently uses these databases to identify classes of ships, actions (i.e. the speed of a ship, or the type of weapon released and the most effective countermeasures to employ), and even particular ships.

  7. Thomson Marconi Sonar - Wikipedia

    en.wikipedia.org/wiki/Thomson_Marconi_Sonar

    Thomson Marconi Sonar or TMS was formed in 1996 by the merger of the sonar systems businesses of French defence electronics specialist Thomson-CSF and British company GEC-Marconi after the payment of a balance by the latter. [1] The new company was 50.1% owned by Thomson-CSF and 49.9% by GEC-Marconi. [2] Denis Ranque was appointed as its CEO ...

  8. Side-scan sonar - Wikipedia

    en.wikipedia.org/wiki/Side-scan_sonar

    The first commercial side-scan system was the Kelvin Hughes "Transit Sonar", a converted echo-sounder with a single-channel, pole-mounted, fan-beam transducer introduced around 1960. In 1963 Dr. Harold Edgerton, Edward Curley, and John Yules used a conical-beam 12 kHz side-scan sonar to find the sunken Vineyard Lightship in Buzzards Bay ...

  9. Short baseline acoustic positioning system - Wikipedia

    en.wikipedia.org/wiki/Short_Baseline_Acoustic...

    Short baseline systems get their name from the fact that the spacing of the baseline transducers (on a boat for example) is usually much less than the distance to the target, such as a robotic vehicle or diver venturing far from the boat [3] As with any acoustic positioning system, a larger baseline yields better positioning accuracy.