These photographs were selected to show the original configuration of this class and major subsequent modifications. For more views see the former NHHC (now Hyperwar) Online Library of Selected Images and the NavSource Photo Archive.
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a larger view of the same image.
S.S. Defiance (SP-1015)
Shown pierside before World War I.
She was used by her commercial owners for towing along the Pacific coast and in San Francisco Bay.
Photo No. NH 99965
Source: U.S. Naval History and Heritage Command
USS Challenge (AT-59)
Near the Puget Sound Navy Yard on 14 February 1921.
Photo No. NH 633
Source: U.S. Naval History and Heritage Command