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DeepFlight Challenger
DeepFlight Challenger is a one-person personal submarine deep submergence vehicle with full ocean depth capability. It is an "aero-submarine" which uses hydrodynamic forces to descend, as the sub has positive buoyancy, utilizing DeepFlight technology from Hawkes Ocean Technologies. The submarine is currently owned by Virgin Oceanic.
==History==
The submarine was designed by Graham Hawkes and Hawkes Ocean Technologies. It was originally ordered by Steve Fossett for an attempt on the Challenger Deep, to become the first solo dive there.〔Virgin Oceanic, (Sub ) (accessed 27 March 2012)〕〔CNet News, (Steve Fossett's unfinished legacy: Deepest ocean exploration ), Daniel Terdiman, 3 October 2008 (accessed 27 March 2012)〕 Planning for the submarine started in 2000.〔New York Times, ("The Challenger’s Deep-Sea Brethren" ), Andy Isaacson, 27 March 2012 (accessed 27 March 2012)〕 It was put on the ordersheet in 2005, with a depth capability of 37,000 ft.〔〔Hawkes Ocean Technologies, (Infosheet DeepFlight Challenger ) (accessed 27 March 2012)〕 The craft was named "Challenger" after the ''Challenger Deep'' by Fossett.〔 At the time of the order, this would have doubled the depth that a single-place sub would be capable of going.〔 It was to have been a "secret project" of Fossett's to be the first to solo the Challenger Deep, and was secret at the time of his death in 2007.〔〔KGO-TV ABC 7, ("Fossett's secret project was built in Richmond" ), Thursday 2 October 2008 (accessed 27 March 2012)〕 The project was put on hold when Fossett died, and locked up in a warehouse at Hawkes Ocean Technologies, by the then owners, Fossett's estate,〔 but was later revived when Chris Welsh of Deep Sub LLC bought the unfinished sub and restarted the program in 2010. Welsh had purchased the sub and the Cheyenne yacht from the Fossett estate for around $1 million. Virgin Oceanic came in as sponsors a year later in 2011.〔Boing Boing, ("Richard Branson launches Virgin Oceanic: deep-sea exploring submarines" ), Xeni Jardin, 5 April 2011 (accessed 27 March 2012)〕〔Los Angeles Times, ("With spaceships and airplanes under his belt, Richard Branson turns to submarines" ), Mike Reicher and Kurt Streeter, 6 April 2011 (accessed 27 March 2012)〕〔Virgin Oceanic, (Operations Team ) (accessed 27 March 2012)〕 At the time of Fossett's death, the sub had been almost finished,〔〔San Francisco Chronicle, ("Winged sub almost ready to go very deep" ), Tom Stienstra, 12 October 2008 (accessed 27 March 2012)〕 only four weeks from dive tests 〔 and delivery.〔CNN, ("Super-light sub has 'capability greater than U.S. Navy'" ), Mairi Mackay, 11 September 2009 (accessed 27 March 2012)〕
Had the sub been finished as scheduled, it would have been the first to return a solo manned mission to the Challenger Deep.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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