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 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 military service have the designation "
USS", are
armed, and are crewed by U.S. Navy personnel. Additionally, the United States Naval Ships
hull classification symbol 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 the prefix reverts to a civilian
ship prefix such as the case of
SS Comet. ==See also==