Archive · 20 Aug 2026
China Expands Disputed Antelope Reef With Harbour And Runway
China has made a larger island at Antelope Reef by moving soil and rocks into the sea.
It has built a harbour, wharf, helipad and a long straight strip that could be a runway.
A Chinese coast guard ship was seen at the wharf in satellite images.
China says the facilities are for weather studies and science.
Some experts think they could also be used by the military.
They say the location could help China watch ships and aircraft in the South China Sea.
The reef is in the Paracel Islands, which China controls but Vietnam also claims.
The construction is part of a larger disagreement over territory in the region.
Satellite imagery reviewed by Reuters shows China has created an artificial island at disputed Antelope Reef.
The six-kilometre island includes a deep-water harbour, 680-metre wharf, helipad and a possible three-kilometre runway.
Analysts say the dual-use facilities could support military operations and potentially become a major Chinese base.
China says the infrastructure is intended for weather forecasting and scientific research, while analysts question that explanation.
Antelope Reef is in the China-controlled Paracel Islands, which are also claimed by Vietnam.
- Who
- China is developing Antelope Reef; Vietnam also claims the Paracel Islands, while analysts assess the site’s military potential.
- What
- China has built an artificial island with a harbour, wharf, helipad and possible runways at Antelope Reef.
- When
- Satellite imagery cited in the reports includes images dated July 8 and July 19, 2026; the first construction phase has reportedly been completed.
- Where
- Antelope Reef, in the Paracel Islands in the northern South China Sea.
- Why
- China says the facilities are for weather forecasting and scientific research; analysts say they could support surveillance, military operations and deployments.
China’s stated civilian purpose
Analysts’ military assessment
Purpose of the facilities
China’s stated civilian purpose
China says the infrastructure will support weather forecasting and scientific research.
Analysts’ military assessment
Analysts say the dual-use facilities could be rapidly adapted into a military base and support military operations.
Strategic significance
China’s stated civilian purpose
China has not publicly described the development as a military installation in the reports.
Analysts’ military assessment
Analysts say the site could become a major installation for surveillance, submarine operations, bombers and deployments near Taiwan-related waters.
Regional sovereignty
China’s stated civilian purpose
China controls the Paracel Islands and is developing infrastructure at Antelope Reef.
Analysts’ military assessment
Vietnam also claims the Paracel Islands, making the construction part of a broader territorial dispute in the South China Sea.
- Island length
- Approximately 6 kilometres
- Possible runway
- A straight section approximately 3 kilometres long; CSIS also reported apparent construction of a second runway.
- Wharf
- Approximately 680 metres long and connected to a deep-water harbour.
- Reported facilities
- Harbour, wharf, helipad and possible runway infrastructure.
- China’s stated purpose
- Weather forecasting and scientific research.
- Territorial status
- China controls the Paracel Islands, which are also claimed by Vietnam.
- Nearby military feature
- Woody Island, about 100 kilometres away, has Chinese fighter aircraft and surface-to-air missiles, according to the report.