missile submarines (SSBN). In the 1980s, under the leadership of Chief Naval Commander Liu Huaqing, the navy developed into a regional naval power, though naval construction continued at a level somewhat below the 1970s rate. Liu Huaqing was an Army Officer who spent most of his career in administrative positions involving science and technology. It was not until 1988 that the People's Liberation Army Navy was led by a Naval Officer. Liu was also very close to Deng Xiaoping as his modernization efforts were very much in keeping with Deng's national policies. While under his leadership Naval construction yards produced fewer ships than the 1970s, greater emphasis was placed on technology and qualitative improvement. Modernization efforts also encompassed higher educational and technical standards for personnel; reformulation of the traditional coastal defense doctrine and force structure in favor of more green-water operations; and training in naval combined-arms operations involving submarine, surface, naval aviation, and coastal defense forces. Examples of the expansion of China's capabilities were the 1980 recovery of an intercontinental ballistic missile (ICBM) in the Western Pacific by a twenty-ship fleet, extended naval operations in the South China Sea in 1984 and 1985, and the visit of two naval ships to three South Asian nations in 1985. In 1982 the navy conducted a successful test of an underwater-launched ballistic missile. The navy also had some success in developing a variety of surface-to-surface and air-to-surface missiles, improving basic capabilities. In 1986 the Navy's order of battle included two Xia-class SSBNs armed with twelve CSS-N-3 missiles and three Han-class SSNs armed with six SY-2 cruise missiles. In the late 1980s, major deficiencies reportedly remained in anti-submarine warfare, mine warfare, naval electronics (including electronic countermeasures equipment), and naval aviation capabilities. The PLA Navy was ranked in 1987 as the third largest navy in the world, although naval personnel had comprised only 12 percent of PLA strength. In 1987 the Navy consisted (as it does now) of the naval headquarters in Beijing; three fleet commands – the North Sea Fleet, based at Qingdao, Shandong; the East Sea Fleet, based at Ningbo; and the South Sea Fleet, based at Zhanjiang, Guangdong – and about 1,000 ships of which only approximately 350 are ocean going. The rest are small patrol or support craft. The 350,000-person Navy included Naval Air Force units of 34,000 men, the Coastal Defense Forces of 38,000, and the Marine Corps of 56,500.