US Navy (USN) Sailors fire an M2.50 Caliber Machine Gun during a weapons Familiarization Fire (Fam-Fire) on the fantail of the USN Nimitz Class Aircraft Carrier USS ABRAHAM LINCOLN (CVN 72), in the Pacific Ocean

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.