A U.S. Navy file photo of the keel of the aircraft carrier USS Nimitz (CVN 68) as it is lowered into the shipyard dock.
WASHINGTON (Jun. 22, 2018) A U.S. Navy file photo of the keel of the aircraft carrier USS Nimitz (CVN 68) as it is lowered into the shipyard dock at Newport News Shipbuilding in Newport News, Va., June 22, 1968. (U.S. Navy photo provided by USS Nimitz photo archives) File# 180622-N-N0101-1003
Aircraft carriers are warships that act as airbases for carrier-based aircraft. In the United States Navy, these consist of ships commissioned with hull classification symbols CV (aircraft carrier), CVA (attack aircraft carrier), CVB (large aircraft carrier), CVL (light aircraft carrier), CVN (aircraft carrier (nuclear propulsion) and CVAN (attack aircraft carrier (nuclear propulsion). The first aircraft carrier commissioned into the United States Navy was USS Langley (CV-1) on 20 March 1922.