Central London Reef

Central London Reef (Filipino: Bahura ng Gitnang Quezon); Trường Sa Đông Island (Vietnamese: Đảo Trường Sa Đông); Mandarin Chinese: 中礁; pinyin: Zhōng jiāo, is a reef on the central part of the London Reefs of the Spratly Islands in the South China Sea. The reef has been occupied by Vietnam since 1978. It is also claimed by the Philippines, Vietnam, and Taiwan (ROC).^[1][2][3]

Central London Reef

Disputed reef
Central London Reef
Central London Reef
Other names	Đảo Trường Sa Đông (Vietnamese) Central Quezon Reef (Philippine English) Bahura ng Gitnang Quezon (Filipino) 中礁 Zhōng jiāo(Chinese)
Geography
Location	South China Sea
Coordinates	8°55′52″N 112°21′11″E
Archipelago	Spratly Islands
Area	27 ha (67 acres)
Administration
Vietnam
District	Trường Sa District
Township	Trường Sa Township
Claimed by
Vietnam
Philippines
Taiwan

The coral reef where Truong Sa Dong Island is located is a shallow reef when the tide is at its lowest. On the western side of the coral reef, there is also a small sandbar.^[4] The surface of the coral reef is uneven, so the varying depths can be dangerous for ships entering and exiting. The coral reef has an area of approximately 1 km2.^[5]

Trường Sa Đông Island is situated along the northeast-southwest axis in the northeast part of the coral reef. According to AMTI (part of the Center for Strategic and International Studies - United States), the natural land area of the island is approximately 0.88 hectares, and after land reclamation, the above-water land area of the island was approximately 2.55 hectares^[6] as of 2016, with a length of approximately 250 meters and a width of approximately 120 meters.

Since late September 2023, Vietnam has been conducting land reclamation to expand Truong Sa Dong Island.^[7] As of March 2025, the island's area spans approximately 27 hectares, with a harbor covering about 16 hectares.

Vietnam Military cemetery on Central London Reef

See also

• Spratly Islands dispute