Jianggezhuang is a Chinese naval base approximately 15 miles (24 km) east of Qingdao on the Yellow Sea. The base spans a bay 1.2 miles (1.9 km) across, with the main facilities located in the eastern portion of the bay. There are six piers, a dry dock, various service facilities and an underground submarine tunnel.
The base hosts China's Type 092-class ballistic missile submarine and Type 091-class nuclear attack submarines.
References
Jianggezhuang Wikipedia(Text) CC BY-SA