The Philippine Coast Guard (PCG) challenges the presence of China Coast Guard (CCG) vessel "5303" off the coast of Pangasinan on Aug. 4, 2025. (Courtesy of PCG)
After challenging a Chinese research vessel off Cagayan’s waters over the weekend, the Philippine Coast Guard (PCG) monitored anew two China Coast Guard (CCG) ships within the country’s exclusive economic zone (EEZ), this time off the coast of Pangasinan.
The CCG vessel has a bow number of “5303” and was detected approximately 39 nautical miles off Pangasinan’s coast on Monday, Aug. 4.
Another CCG vessel with bow number “4203” was accompanying CCG-5303.
PCG Commandant, Admiral Ronnie Gil Gavan ordered the deployment of BRP Teresa Magbanua (MRRV-9701) to challenge the presence of the CCG vessels.
“Upon arrival at the scene, the BRP Teresa Magbanua engaged CCG-5303 via radio communication, challenging its presence and asserting that the vessel lacked legal authority to operate within the Exclusive Economic Zone (EEZ) of the Philippines,” PCG spokesperson for West Philippine Sea (WPS), Commodore Jay Tarriela said.
The CCG ship responded to the radio challenge and insisted it was operating within Beijing's waters.
A second Chinese vessel, China Coast Guard (CCG) ship "4203", is monitored by the Philippine Coast Guard off the coast of Pangasinan on Aug. 4, 2025. (Photo: PCG)
CCG-5303 also accused BRP Teresa Magbanua of trespassing into China’s waters and asserted its country’s sovereignty over Huangyan Island and its adjacent waters through its dash-line claims, which have already been invalidated by the 2016 arbitral ruling.
Huangyan Island is locally known as Bajo de Masinloc (Scarborough or Panatag Shoal).
Tarriela noted that the area is about 600 nautical miles from China, outside the 200-nautical mile EEZ limit of every country.
BRP Teresa Magbanua reiterated its position and emphasized its legitimate authority based on the Philippine Maritime Zones Act, the United Nations Convention on the Law of the Sea (UNCLOS), and the 2016 arbitral award, which reinforces the Philippines' maritime rights over the area.
The confrontation occured as the PCG also challenged Chinese research vessel “Xiang Yang Hong 05” approximately 37 nautical miles off the coast of Santa Ana, Cagayan last Aug. 2.
According to the PCG, the research vessel departed from Guangdong province, China on June 5 en route to WPS. It entered the Philippines’ EEZ on June 7, approximately 130 nautical miles from Burgos, Ilocos Norte. It left on June 9 but re-entered the EEZ last July 31.
Based on its historical track, the Xiang Yang Hong 05 conducted substantial marine scientific research for almost 22 days after departing the Philippine EEZ and before re-entering.