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The ACTUV prototype will integrate Raytheon's MS3 sonar system. The vessel is expected to be ready for testing in early 2016. Source: Leidos
Raytheon has delivered a hull-mounted sonar system for the US Defense Advanced Research Projects Agency's (DARPA's) Anti-Submarine Warfare Continuous Trail Unmanned Vessel (ACTUV) programme.
Under a subcontract to Leidos, which is leading a team building the prototype unmanned trimaran for DARPA, Raytheon's Modular Scalable Sonar System (MS 3 ) will be integrated as the ACTUV's primary search-and-detection sonar. Designed to autonomously conduct active and passive searches, detect torpedoes, filter passive threats, localise and track submarines, and avoid small objects, the MS 3 is Raytheon's first fifth-generation medium-frequency hull-mounted sonar system.
According to an IHS Jane's report from early November, construction of the ACTUV prototype was about 90% complete. The vessel was expected to be ready to enter the water for testing in January or February 2016. In mid-November, a surrogate vehicle had completed in-water trials.
ACTUV is 132 ft (40 m) in length and weighs 140 US tons (127 tonnes). It was originally designed to trail submarines for weeks or even months at a time.
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Raytheon delivers sonar for DARPA's unmanned ASW vehicle programme | IHS Jane's 360