An SH-60F Seahawk helicopter of Helicopter Squadron Six (HS-6) lifts cargo off the flight deck of the ammunition ship USS MOUNT HOOF (AE-29) during an underway replenishment operation with the nuclear-powered aircraft carrier USS ABRAHAM LINCOLN (CVN-72) during WestPac '93

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.