The Philippine government has formally demanded that China remove a floating platform discovered inside the lagoon of Scarborough Shoal, a maritime feature located approximately 120 nautical miles off the coast of Zambales. Officials from the National Task Force for the West Philippine Sea (NTF-WPS) stated on June 10 that the structure, along with two Chinese research vessels, is likely being used for unauthorized scientific research within the Philippines’ 200-nautical-mile exclusive economic zone.
Why the Philippines is concerned about the platform
Security officials view the platform as a potential precursor to permanent development, citing the precedent of Mischief Reef. In 1995, China claimed it was building a “fisherman’s wharf” at that location; the site has since been transformed into a fully militarized artificial island. National Maritime Council spokesperson Undersecretary Alexander Lopez confirmed the government intends to use all available diplomatic and legal channels to prevent a repeat of that “nightmare.”

Did You Know? The floating platform is estimated to be 6 to 7 meters long and has been observed with a newly installed antenna. It is equipped with fenders for protection during towing and can be anchored or supported by metal stilts while stationary.
Evidence of activity at Scarborough Shoal
The Philippine Coast Guard and the Philippine Navy have been conducting daily monitoring of the area. According to Rear Admiral Jay Tarriela, spokesperson for the Philippine Coast Guard, two Chinese research vessels have been present inside the shoal since at least May 21. Satellite imagery first identified the floating structure on May 25, and subsequent maritime domain awareness flights confirmed the presence of six personnel and an antenna on the platform by May 30.
Expert Insight: The stakes of the dispute
The current standoff reflects a broader geopolitical struggle over the 2016 South China Sea arbitral ruling. While Manila relies on the ruling to assert its sovereign rights, Beijing maintains that the decision is illegal. The persistent presence of Chinese vessels and the harassment of Philippine patrols—including incidents involving helicopters and a fighter jet in late May—suggest a strategy of incremental control that challenges Philippine maritime jurisdiction without engaging in full-scale conflict.
What could happen next?
The Philippine government has indicated it will continue to rely on diplomatic protests and demarches, though officials have declined to share details on Beijing’s responses. Given the history of the region, if China refuses to withdraw the platform, the Philippines may face a prolonged stalemate similar to the ongoing presence of the BRP Sierra Madre at Ayungin Shoal. The situation remains tense, as the presence of research vessels and new infrastructure inside the lagoon suggests that China intends to maintain its influence over the area despite formal objections from Manila.
Frequently Asked Questions
What is the Philippine government’s official stance on the platform?
The government considers the platform a violation of its sovereignty and international law, specifically the United Nations Convention on the Law of the Sea (UNCLOS) and the 2016 arbitral award.
How has China responded to the claims?
A spokesperson for the Chinese embassy in Manila stated on June 9 that Beijing considers the 2016 Arbitral Award illegal and intends to continue upholding its territorial sovereignty and maritime rights in the South China Sea.
What specific actions has the Philippines taken?
The Department of Foreign Affairs has filed several demarches and a protest, while the Philippine Coast Guard and Navy have maintained daily maritime domain awareness monitoring of the shoal.
How do you believe regional diplomatic efforts will impact the presence of these structures in the coming months?
