Chinese construction of a runway on Antelope Reef in the Paracel Islands is advancing rapidly, according to commercial satellite images reviewed by Reuters. Analysts estimate that paving could be completed in the first half of 2027 and a first aircraft landing might follow by midyear or earlier.
Images taken on September 25 by satellite provider Vantor show grading, piles of gravel and concrete and compaction cranes preparing foundations. They also show a loaded gravel barge approaching a newly built wharf, indicating that material deliveries and heavy engineering are continuing at scale.
The artificial island stretches nearly six kilometres, with more than three kilometres of straight coastline suitable for a full-size runway. Analysts compare the timetable with China's construction at Fiery Cross Reef, where a three-kilometre military-grade runway was completed in the Spratly Islands in 2015.
Ben Lewis, founder of the open-source platform PLATracker, said China has had a decade to improve its island-building speed. He had not yet observed excavation for ammunition and fuel storage, facilities that would be expected if Antelope develops into a fully operational large military base.
A completed installation would be China's most significant South China Sea military expansion in about ten years. It could extend deployments of naval vessels and aircraft across the northern waterway and help protect approaches to Hainan, where China bases nuclear-armed ballistic-missile submarines.
China has not acknowledged that it is constructing a military base. State media describe Antelope as supporting civilian functions such as weather forecasting, maritime services and scientific research. The Defence Ministry did not respond to Reuters questions about the latest visible work.
The sovereignty dispute remains unresolved. China has controlled the Paracels since driving South Vietnamese forces out in 1974, but Vietnam and Taiwan also claim the archipelago. Their governments did not immediately respond to questions about the new imagery and the projected runway.
Antelope is part of a broader expansion that includes unexplained installations on nearby Yagong Island and a newly confirmed joint military support facility in Laos. Together, the projects suggest Beijing is building a more connected regional network, even as the specific future functions of each site remain partly uncertain.
