Longpo Naval Base
| Longpo Naval Base 龙坡海军基地 | |
|---|---|
| Yalong Bay, Sanya, Hainan, China | |
| The base viewed from the Yalong Bay Beach | |
| Site information | |
| Type | Military base | 
| Controlled by | PLA Navy | 
| Location | |
| Site history | |
| In use | 1955 – Present | 
Longpo Naval Base (Chinese: 龙坡海军基地), also known as East Yulin Naval Base is a naval base for nuclear submarines along the southern coast of Hainan Island, China. This underground base has been reported by several intelligence agencies. The images collected by the Federation of American Scientists (FAS) in February 2008 shows that China constructed a large scale underground base for its naval forces. In August 2020, satellite imagery from Planet Labs appeared to show a Shang-class submarine entering the underground base.