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United States Naval Ship (USNS) is the prefix designation given to non- commissioned ships that are property of the
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 ...
(USN).


Definition

United States Naval Ships are unarmed auxiliary support vessels owned by the U.S. Navy and operated in non-commissioned service by
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 ...
with a civilian crew. Some ships include a small military complement to carry out communication and special mission functions, or for force protection. In comparison, U.S. Navy ships commissioned into service have the designation " USS" and are
armed Armed (May, 1941–1964) was an American Thoroughbred gelding race horse who was the American Horse of the Year in 1947 and Champion Older Male Horse in both 1946 and 1947. He was inducted into the National Museum of Racing and Hall of Fame in ...
, crewed by U.S. Navy personnel, and held in property by the
United States Government The federal government of the United States (U.S. federal government or U.S. government) is the national government of the United States, a federal republic located primarily in North America, composed of 50 states, a city within a fede ...
. Additionally, the United States Naval Ships
hull classification symbol The United States Navy, United States Coast Guard, and United States National Oceanic and Atmospheric Administration (NOAA) use a hull classification symbol (sometimes called hull code or hull number) to identify their ships by type and by ind ...
begins with "T-" to denote its civilian crew. The USNS prefix can be assigned only while the ship is owned by the U.S. Navy. If, after being taken out of service, the ship is transferred to the
Maritime Administration Maritime administrations, or flag state administrations, are the executive arms/state bodies of each government responsible for carrying out the shipping responsibilities of the state, and are tasked to administer national shipping and boating issue ...
the prefix reverts to a civilian
ship prefix A ship prefix is a combination of letters, usually abbreviations, used in front of the name of a civilian or naval ship that has historically served numerous purposes, such as identifying the vessel's mode of propulsion, purpose, or ownership/n ...
such as the case of SS ''Comet''.


See also

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War Shipping Administration The War Shipping Administration (WSA) was a World War II emergency war agency of the US government, tasked to purchase and operate the civilian shipping tonnage the United States needed for fighting the war. Both shipbuilding under the Maritime Co ...
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United States Merchant Marine United States Merchant Marines are United States civilian mariners and U.S. civilian and federally owned merchant vessels. Both the civilian mariners and the merchant vessels are managed by a combination of the government and private sectors, an ...
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List of Military Sealift Command ships This is a list of Military Sealift Command ships. The fleet includes about 130 ships in eight programs: Fleet Oiler (PM1), Special Mission (PM2), Strategic Sealift (PM3), Tow, Salvage, Tender, and Hospital Ship (PM4), Sealift (PM5), Combat Logist ...
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List of United States Navy ships List of United States Navy ships is a comprehensive listing of all ships that have been in service to the United States Navy during the history of that service. The US Navy maintains its official list of ships past and present at the Naval Vessel ...
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Royal Fleet Auxiliary The Royal Fleet Auxiliary (RFA) is a naval auxiliary fleet owned by the UK's Ministry of Defence. It provides logistical and operational support to the Royal Navy and Royal Marines. The RFA ensures the Royal Navy is supplied and supported by ...


References

{{US Navy navbox Ship prefixes United States Navy