High Quality Content by WIKIPEDIA articles! USNS Najavo (T-ATF-169) is a United States Navy Powhatan-class fleet ocean tug in service since 1980. Navajo was laid down on 14 December 1977 by the Marinette Marine Corporation at Marinette, Wisconsin. Launched on 20 December 1979, and delivered to the U.S. Navy on 13 June 1980, Navajo was assigned to the Military Sealift Command (MSC), and placed in non-commissioned service as USNS Navajo (T-ATF-169) in 1980. Navajo remains in active service.