Machinist�s Mate 3rd Class Christopher Clift of Baton Rouge, La., ensures that the light-off torch is burning hot in preparation to light fires on the number three bravo boiler aboard USS Kitty Hawk (CV 63)

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.