"Indomitable" was laid down by the Tacoma Boatbuilding Company at Tacoma, Washington on 26 January 1985 and launched on 16 July 1985.She was delivered to the U.S. Navy on 26 November 1985 and placed in non-commissioned service in the U.S. Navys Military Sealift Command on 1 December 1985 as USNS "Indomitable" (T-AGOS-7), a United States Naval Ship with a mixed crew of U.S. Navy personnel and civilian merchant mariners.