MANILA | The Philippines' use of new Australian aerial and underwater drones is shifting South China Sea deterrence toward a cheaper, more persistent form of monitoring: evidence-gathering systems that can record, document and expose activity in contested waters.
The South China Morning Post reported that Australia has supplied the Philippine coastguard with a new batch of aerial and undersea drones that analysts say could strengthen Manila's ability to monitor China's actions in areas within the Philippines' exclusive economic zone. The systems are not a substitute for ships, aircraft or diplomacy. They are a way to increase visibility, extend surveillance and create records that support Manila's public and legal case.
That matters because the Philippines has relied heavily on what analysts call assertive transparency: documenting encounters with Chinese coastguard or maritime militia vessels, releasing images and video, and using public evidence to build international support. Drones fit that strategy. They can be cheaper than large platforms, more expendable than manned aircraft and useful in places where a coastguard cutter cannot be everywhere at once.
Underwater drones add another dimension. They can support mapping, search, monitoring and possibly detection in maritime zones where undersea activity is increasingly important. Their value depends on endurance, sensors, communications, operators and how well data is processed. A drone that cannot transmit, navigate or survive conditions is not a deterrent. A networked system that can document intrusions becomes much more valuable.
For Australia, the transfer deepens its practical security role in Southeast Asia. Canberra has an interest in resisting coercive maritime behavior without forcing every response into a major-power military confrontation. Providing surveillance tools to the Philippine coastguard is a way to strengthen a partner while keeping the focus on law enforcement, maritime domain awareness and rules-based access.
China is likely to view the systems through the broader lens of U.S.-ally coordination, AUKUS technology and regional containment. Manila will argue the drones are defensive and designed to monitor waters it has a right to patrol. The result is another example of how the South China Sea competition is moving beyond ships facing ships. It is increasingly a contest of sensors, evidence, endurance and public legitimacy.
Additional Reporting By: South China Morning Post; Associated Press background reporting; Philippine Coast Guard materials reviewed by CGN News; CGN News Manila Bureau.