of the Sovremenny-class destroyers, Kilo-class submarines and the aircraft carrier Liaoning. Those vessels were either imported from, or originated from Russia. As of 2008, English-language official Chinese state media no longer uses the term "People's Liberation Army Navy", instead the term "Chinese Navy" along with the usage of the unofficial prefix "CNS" for "Chinese Navy Ship" is now employed. China employs a wide range of Navy combatants including aircraft carriers, amphibious warfare ships, and destroyers. The Chinese Navy is undergoing modernization rapidly with nearly half of Chinese Navy combat ships built after 2010. China's state-owned shipyards have built 83 ships in just eight years with unprecedented speed. China has its own independent maritime missile defense and naval combat system similar to US Aegis. Aircraft China operates carrier-based fighter aircraft to secure land, air and sea targets. The Chinese Navy also operates a wide range of helicopters for battlefield logistics, reconnaissance, patrol and medical evacuation. Naval weaponry The unique QBS-06 is an underwater assault rifle with 5.8x42 DBS-06, and is used by Naval frogmen. It is based on the Soviet APS. In early February 2018, pictures of what is claimed to be a Chinese railgun were published online. In pictures the gun is shown mounted on the bow of a Type 072III-class landing ship Haiyangshan. Media is suggesting that the system is or soon will be ready for testing. In March 2018, it was reported that China had confirmed that it had begun testing its electromagnetic rail gun at sea. Future of the People's Liberation Army Navy The PLAN's ambitions include operating out to the first and second island chains, as far as the South Pacific near Australia, and spanning to the Aleutian islands, and operations extending to the Straits of Malacca near the Indian Ocean. The future PLAN fleet will be composed of a balance of combatant assets aimed at maximising the PLAN's fighting effectiveness. On the high end, there would be modern destroyers, such as stealth guided missile destroyers equipped with long-range air defense missiles and anti-submarine capabilities (Type 055). There would be modern destroyers equipped with long-range air defense missiles (Type 052B, Type 052C, Type 052D and Type 051C, and destroyers armed with supersonic anti-ship missiles (Sovremenny class). There would be advanced nuclear-powered attack and ballistic missile submarines (Type 093, Type 095, Type 094, Type 096), advanced conventional attack submarines (Kilo and Yuan classes), aircraft carriers (Type 001,