Quick summary: The Philippine Coast Guard has identified four advanced Chinese vessels conducting unauthorised marine research near the gas rich Reed Bank and other strategically vital reefs within Manila’s exclusive economic zone. These operations violate international maritime law and have prompted an increase in defensive patrols to protect national sovereignty and secure critical energy resources. This escalation in territorial tension underscores a significant challenge for global public policy and regional stability as nations compete for control over essential shipping routes and subsea oil reserves.
The Philippine Coast Guard (PCG) has accused China of conducting unauthorised marine scientific research within Manila’s exclusive economic zone, including near the gas-rich Reed Bank in the disputed South China Sea.
The coast guard said its aircraft spotted the Chinese research vessel Xiang Yang Hong 33 near Iroquois Reef during a maritime patrol on 6 May. The vessel was seen deploying a service boat towards the reef, which the coast guard described as confirming ongoing unauthorised research operations. One Chinese Coast Guard vessel and 13 Chinese maritime militia ships were also observed around the reef, while 28 additional Chinese maritime militia ships were monitored near Thitu island during the same patrol.
The PCG said the Xiang Yang Hong 33 departed China on 15th April and had conducted operations near Second Thomas Shoal, Sabina Shoal, Mischief Reef, and Jackson Atoll in recent weeks.
4 Chinese research vessels identified
The Philippine Coast Guard identified four Chinese research vessels conducting what it considers illegal activities in Philippine waters:
- Xiang Yang Hong 33 is an advanced oceanographic survey vessel equipped for deep-sea research, seafloor mapping, geophysical exploration, and support of submersibles. It was observed approximately 140.47 nautical miles northwest of Rizal, Palawan, near Quirino Atoll.
- Shi Yan 1 is a SWATH-hulled research vessel specialising in marine science and hydro-acoustics, featuring dynamic positioning, noise reduction, and advanced sensors. It was underway approximately 118 nautical miles west of Itbayat, Batanes.
- Jia Geng is a deep-sea research vessel equipped with acoustic sensors, weather radars, and capable of deploying unmanned underwater vehicles for oceanographic studies. It was observed approximately 88.36 nautical miles northeast of Itbayat, Batanes.
- Zhuhai Yun is described as the world’s first intelligent drone mother ship, designed to deploy and control over 50 unmanned aerial, surface, and underwater vehicles simultaneously for three-dimensional ocean surveys. It was lying approximately 102.11 nautical miles northwest of BDM, or 171.18 nautical miles west of Bolinao, Pangasinan.
Coast Guard spokesman Rear Admiral Jay Tarriela said the operations violated the United Nations Convention on the Law of the Sea, as they were carried out without legal authority or prior consent from the Philippine government.
“We will not tolerate any illegal marine scientific research conducted without our government’s consent. We are deploying aircraft and vessels to challenge and drive away these unauthorised vessels to protect Philippine sovereignty and sovereign rights,” said PCG Commandant Admiral Ronnie Gil Gavan.
China defends its vessels
China’s Foreign Ministry said its vessels were carrying out normal research in waters under Chinese jurisdiction and had followed both Chinese law and international law, including the United Nations Convention on the Law of the Sea. It urged the Philippines to stop what it called dangerous actions and to keep its distance from Chinese vessels. Beijing’s embassy in Manila did not immediately respond to requests for comment on the latest Reed Bank incident.
The South China Sea is a strategically vital waterway and major global shipping route, believed to hold substantial reserves of oil and gas. Multiple countries, including the Philippines, China, and Vietnam, have overlapping territorial claims there. Tensions have escalated in recent years with more frequent encounters between Philippine and Chinese vessels. The Philippines has strengthened its military cooperation with the United States to bolster its defence capabilities in the region.
The PCG said it will continue to monitor the movements of the Chinese vessels in line with Philippine laws and international maritime law.
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