The Philippine Coast Guard deployed an aircraft to monitor and challenge a Chinese research vessel operating within the country’s exclusive economic zone (EEZ) off the coast of Cagayan, the PCG confirmed yesterday. PCG chief Adm. Ronnie Gil Gavan ordered the patrol mission on Thursday after reports of the Xiang Yang Hong 05 navigating approximately 37 nautical miles off Sta. Ana, Cagayan. The aircraft, conducting a Maritime Domain Awareness flight, sighted the vessel at 14.92 nautical miles from Babuyan Island. A radio challenge was issued, but the vessel reportedly did not respond.

Boton, C. (2025, August 4). PCG challenges Chinese research vessel off Cagayan. The Philippine Star, p. 2.