330-PSA-139-64 (USN 1097019):  The Navy research submarine, Alvin was operated by the Woods Hole Oceanographic Research Institution for the Office of Naval Research.  The craft is 29 feet long and weighs 11 tons.  It has a molded fire-glass hull, which houses 8,400 pound sphere, made of one-inch thick steel, in which the two men crew will ride.   The sphere can be released in an emergency and will float to the surface.  Alvin is expected to have continuous speed of four knots, six knots in short bursts and a maximum range of 25 miles.  Alvin is named for Allyn C. Vine, a Woods Hole Oceanographic Research doctor, who was greatly responsible for the submarine’s creation.  Photograph released June 24, 1964.  (2015/11/03).
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