330-PSA-99-64 (USN 711458): The Deep Submergence Systems Review Group recommended this undersea search vehicle to the Secretary of the Navy in a report, April 1964.  The proposed vehicle will be used to investigate ocean bottoms and recover objects.  Master Caption:  Following the loss of the submarine USS Thresher in April 1963, the Secretary of the Navy established the Deep Submergence Systems Review Group to analyze the requirements for placing man at great ocean depths.  The study included an examination of plans for the development and procurement of components and systems related to the location, identification, rescue from and the recovery of large and small boats, including submarines, from the ocean floor.   Photograph released April 30, 1964.  (2015/10/27).
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