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Originally designated as Oconee, AT-31 was renamed Koka 24 February 1919; launched 11 July 1919, by the Puget Sound Navy Yard; and commissioned 18 February 1920, Lt. (j.g.) J. C. Bauman, Jr., in command.

Assigned to the 11th Naval District, Koka sailed from Puget Sound to San Diego during March 1920. For almost 18 years she operated out of San Diego along the coast of southern California, performing various tug and target towing services. While steaming off San Clemente Island, she ran aground 7 December 1937, and was officially decommissioned the same day. Declared unsalvageable, Koka was abandoned as a wreck 22 January 1938. Her name was struck from the Navy List 2 March.

This page is created and maintained by Gary P. Priolo