USNS ''Sioux'' (T-ATF-171) was a

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

in service from 1981 to 2021. ''Sioux'' was laid down on 22 March 1979 by the

Marinette Marine Corporation Fincantieri Marinette Marine (FMM) is an American shipbuilding firm in Marinette, Wisconsin. Marinette Marine was a subsidiary of Manitowoc Marine Group of Wisconsin from 2000 to 2009, when it was sold to Fincantieri Marine Group. History M ...

at Marinette,

Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...

. Launched on 15 November 1980 and delivered to the U.S. Navy on 1 May 1981, ''Sioux'' was assigned to the Pacific Fleet of

Military Sealift Command Military Sealift Command (MSC) is an organization that controls the replenishment and military transport ships of the United States Navy. Military Sealift Command has the responsibility for providing sealift and ocean transportation for all US m ...

(MSC), and placed in non-commissioned service as USNS ''Sioux'' (T-ATF-171) in 1981. Although stationed primarily at

San Diego San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the List of United States cities by population, eigh ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, ''Sioux'' frequently operates from

Pearl Harbor Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the Naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Re ...

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

San Francisco San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...

and

Bremerton Bremerton is a city in Kitsap County, Washington. The population was 37,729 at the 2010 census and an estimated 41,405 in 2019, making it the largest city on the Kitsap Peninsula. Bremerton is home to Puget Sound Naval Shipyard and the Bremerto ...

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

. She was inactivated on 30 September 2021

Service history

In 2014, ''Sioux'' came to the aid of the damaged

Royal Canadian Navy The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the Navy, naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack s ...

vessel which had caught fire off Hawaii. After receiving aid from USN vessels and , ''Sioux'' arrived to take the vessel under tow. The tug brought the damaged ship into Pearl Harbor safely. For that mission, ''Sioux'' was awarded a Canadian Forces Unit Commendation in June 2015.

References

External links

NavSource Online: Service Ship Photo Archive: USNS Sioux (T-ATF-171)
{{DEFAULTSORT:Sioux (T-ATF-171) Tugs of the United States Navy Cold War auxiliary ships of the United States Ships built by Marinette Marine 1980 ships