Secret Sanya – China’s New Nuclear Naval Base Revealed

From Janes.com:

China is constructing a major underground nuclear submarine base near Sanya, on Hainan Island off its southern coast, Jane’s can confirm. Although Asian military sources have disclosed this fact to Jane’s since 2002, high-resolution commercially available satellite imagery from DigitalGlobe allows independent verification of the previous suggestions.

The extent of construction indicates the Sanya base (also known as Yulin) could become a key future base for People’s Liberation Army Navy (PLAN) aircraft carriers and other power-projection ships. In December 2007, perhaps in concert with a major PLAN exercise the previous month, the PLA moved its first Type 094 second-generation nuclear ballistic missile submarine (SSBN) to Sanya.