Sailors prepare to fight a simulated fire during a general quarters drill.
ATLANTIC OCEAN (Mar. 25, 2010) Sailors aboard the Nimitz-class aircraft carrier USS Harry S. Truman (CVN 75) prepare to fight a simulated fire during a general quarters drill. Harry S. Truman is underway conducting strike group sail exercises. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kilho Park) File# 100325-N-6003P-647
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.