Aircraft carrier, referred to as "aircraft carrier" or "empty carrier", is a large surface ship with carrier-based aircraft as its main combat weapon. The hull usually has a huge deck and a ship island on the right. The aircraft carrier is always the core ship of an aircraft carrier battle group. Other ships in the fleet provide protection and supply, while aircraft carriers provide air cover and long-range strike capability. Today, the aircraft carrier has become an indispensable weapon for the modern navy and one of the most important ships in naval warfare. Depending on the aircraft carrier, a country can exert military pressure and fight far away from its territory without relying on the local airport. Aircraft carrier has become an indispensable weapon of modern navy and a symbol of a country's comprehensive national strength.