Investigator Shoal

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Investigator Shoal
Disputed island
Other names: Yuya Ansha 榆亚暗沙;
Terumbu Peninjau;
Investigator Shoal, Spratly Islands.png
Satellite image of Investigator Shoal by NASA.
Investigator Shoal is located in South China Sea
Investigator Shoal
Investigator Shoal (South China Sea)
Location South China Sea
Coordinates 8°6′51″N 114°42′7″E / 8.11417°N 114.70194°E / 8.11417; 114.70194Coordinates: 8°6′51″N 114°42′7″E / 8.11417°N 114.70194°E / 8.11417; 114.70194
Archipelago Spratly Islands
Administered by
Claimed by
People's Republic of China
City Sansha, Hainan
Municipality Kalayaan, Palawan
Republic of China (Taiwan)
Municipality Cijin, Kaohsiung
District Truong Sa, Khanh Hoa

Investigator Shoal, known as Yuya Ansha (Chinese: 榆亚暗沙) in China, Terumbu Peninjau in Malaysia, Pawikan in the Philippines, and bãi Thám hiểm in the Vietnamese is an atoll above water at low tide; some large rocks at the western end might be visible at high water. The atoll has a total length of 32.1 km, and is up to 10.6 km wide.[1] The total area of the atoll is 188 km². The lagoon is up to 45 meters deep.[2]

The Royal Malaysian Navy has maintained a naval station called "Papa Station" since 1999.[3]

Three reefs of the atoll have Vietnamese and Chinese Names:

Investigator Shoal, Spratly Islands.png
đá Sâu / 浪口礁 (Langkou Jiao)
đá Gia Hội / 二角礁 (Erjiao Jiao)
đá Gia Phú / 线头礁 (

Xiantou Jiao)

The Chinese names translate to Wave Frontier Reef, Two Horn Reef and Head of the Reef, while in English Western Reef, Central Reef and Eastern Reef have been adopted.[4]