New Installations Emerge Near Antelope Reef as China Expands South China Sea Infrastructure
New installations have emerged on Yagong Island near Antelope Reef in the Paracel Islands, according to satellite imagery, as construction activity continues in the western part of the disputed South China Sea. Analysts say the new structures could potentially support an early-warning radar facility, although their exact purpose has not yet been established.
The development adds to China’s growing South China Sea infrastructure, with analysts closely monitoring construction around Antelope Reef and nearby features. The area is strategically located along one of the world’s important maritime trade routes, making developments involving maritime security, radar systems and regional infrastructure significant for the wider region.
Construction Begins on Yagong Island
Commercial satellite imagery provider Vantor captured its latest image of Yagong Island on August 17. According to the company, other satellite images indicate that construction began during March and April.
The new development has a three-pronged layout. While the function of the structures remains unclear, Vantor said several buildings on Yagong Reef resemble military radar and early-warning facilities identified at other locations in the South China Sea.
A Vantor spokesperson said the structures are likely associated with the eventual functions of nearby Antelope Reef, while noting that their specific purpose could not be confirmed.
Analysts Assess Possible Radar Role
Open-source intelligence tracker Damien Symon, who has monitored construction activity in the Paracels, said a radar facility was possible but that it was still too early to reach a firm conclusion.
Singapore-based security scholar Collin Koh also assessed the installation. He said its relatively limited scale could indicate a standalone observation post, while suggesting that a radar station was a likely possibility based on the available information.
These assessments remain preliminary, and further construction and satellite imagery could provide additional information about the facilities.
Antelope Reef Development Continues
Yagong Island is located about 14 km northeast of Antelope Reef. Both features are part of the Crescent Group in the western Paracels.
Antelope Reef has also seen extensive construction. Satellite imagery shows an artificial island nearly 6 km long, with a straight stretch of coastline exceeding 3 km. Some analysts believe the straight section could potentially serve as a runway.
The scale of the development at Antelope Reef has made the area an important focus for regional security analysts and military attaches. They assess that the construction could strengthen China’s presence in the northern part of the South China Sea.
China Describes Antelope Reef Development as Civilian
China has not acknowledged the construction of a new military base at Antelope Reef. Chinese state media have described the development as serving civilian purposes, including weather forecasting, fisheries protection and scientific research.
The Chinese Defence Ministry did not immediately respond to a request for comment.
China has occupied the Paracel Islands since 1974, when it seized them from the navy of former South Vietnam. Vietnam claims the entire island group and has expanded its own network of facilities in the Spratly Islands, which are located farther south.
The Spratly Islands and nearby waters are also claimed, wholly or partly, by Vietnam, the Philippines, Malaysia, Taiwan and Brunei.
Strategic Location of Yagong Island
The proximity of Yagong Island to Antelope Reef makes the new construction particularly relevant to the development of infrastructure across the Crescent Group.
If the structures eventually become a radar or observation facility, they could potentially provide additional monitoring capabilities in the surrounding area. However, experts have emphasized that the current imagery does not provide enough evidence to conclusively determine the final function of the installation.
For now, construction activity on Yagong Island and Antelope Reef remains under close observation as infrastructure development continues across the Paracel Islands and the wider South China Sea.
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