A port quarter view of the Suribachi class ammunition ship USS PYRO (AE 24) with a UH-46 Sea Knight helicopter lifting ammunition from her deck. The view was taken from the aircraft carrier USS KITTY HAWK (CV 63) during underway replenishment

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.