High Quality Content by WIKIPEDIA articles! USNS Persistent (T-AGOS-6) was a Stalwart class Modified Tactical Auxiliary General Ocean Surveillance Ship of the United States Navy. Stalwart class ships were originally designed to collect underwater acoustical data in support of Cold war anti-submarine warfare operations in the 1980s. ex-USNS Persistent is now T/S State of Michigan owned by the U.S. Department of Transportation's Maritime Administration and assigned to the Great Lakes Maritime Academy, Traverse City, Michigan.

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