Photo #: NH 69224
USS S-4 (SS-109)
Off Block Island, before being submerged during tests of safety
devices, circa 17 December 1928.
She had been accidently sunk a year earlier, and, following salvage
and repairs, was used to develop equipment and techniques for
submarine rescue and salvage.
Courtesy of the San Francisco Maritime Museum, San Francisco,
California, 1969.
U.S. Naval Historical Center Photograph.
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