USNS Persistent

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.