Four vessels of the United States Navy have been named USS ''Louisville'', after the city of Louisville, Kentucky: *, was an ironclad

steamboat A steamboat is a boat that is marine propulsion, propelled primarily by marine steam engine, steam power, typically driving propellers or Paddle steamer, paddlewheels. Steamboats sometimes use the ship prefix, prefix designation SS, S.S. or S/S ...

used during the American Civil War *, was the

steamship A steamship, often referred to as a steamer, is a type of steam-powered vessel, typically ocean-faring and seaworthy, that is propelled by one or more steam engines that typically move (turn) propellers or paddlewheels. The first steamships ...

''St. Louis'' renamed and used in 1918 as a

troop transport A troopship (also troop ship or troop transport or trooper) is a ship used to carry soldiers, either in peacetime or wartime. Troopships were often drafted from commercial shipping fleets, and were unable land troops directly on shore, typicall ...

*, was a heavy cruiser commissioned in 1931 and active in World War II *, is a nuclear attack submarine commissioned in 1986 and decommissioned in March 2021

See also