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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]
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.
AN/AQS-13 Dipping sonar deployed from an H-3 Sea King, an aircraft used by numerous countries and produced in Italy, Japan, and the United Kingdom Antisubmarine helicopters can carry a "dipping" sonar head at the end of a cable, which the helicopter can raise from or lower into the water.
Dipping sonar (such as that for the Merlin helicopter) Minehunting Sonars (such as Type 2093, Type 2193, TSM 2022 Mk3) Sonar Type 2016 (surface; originally Type 22 Frigates) Sonar Type 2020 (Trafalgar and Swiftsure class of Hunter/Killer Submarines) Mine and obstacle avoidance sonar for surface ships (TSM 5424 Petrel sonar)
The Ka-27PL anti-submarine version is equipped with a radar, and either a dipping sonar or a magnetic anomaly detector. It can also carry either up to 36 sonobuoys, or a torpedo, or between six and eight conventional depth charges, or a single nuclear one. Ka-27PLs generally operate in pairs as hunter-killer teams. [1]
Sonar is typically continually monitoring any movement of the ship. With the amount of weight on the bow of the ship, Martin said he believes the only movement could be the bow sinking deeper into ...
The following television stations operate on virtual channel 7 in the United States: [1]. K04RX-D in Preston, Idaho; K05CF-D in Weaverville, California; K05DQ-D in Burney, etc., California
Early trials were conducted using an experimental dipping sonar called "Hot Dog", a harbour defence sonar capsule lowered over the side or rear of a stationary ship by electrical cable. The trials confirmed the possibility of achieving long detection ranges and the reduced efficacy of hull-mounted sonar against targets in the middle layer.