# Maritime standoff in the Luzon Strait > Live situation record from CLSTR: https://clstr.news/situations/maritime-standoff-in-the-luzon-strait > Updated: 2026-10-03T21:30:00.000Z. Sources: 8. Developments: 2. A maritime standoff occurred in the Luzon Strait near Batanes involving the Chinese research vessel Jia Hai Ke 7. On October 1, 2026, the Philippine Coast Guard (PCG) deployed the BRP Teresa Magbanua and an Islander aircraft to drive the vessel away from waters northwest of Itbayat, located within the Philippine exclusive economic zone (EEZ). Philippine officials expressed concern that the ship was conducting unauthorized marine scientific research and potentially gathering sensitive data near undersea communication cables. The situation involved a China Coast Guard vessel arriving to support the research ship, while the Philippine Department of Foreign Affairs rejected China’s claims of jurisdiction. By October 3, the PCG and Taiwan’s Coast Guard Administration were both actively monitoring Chinese activity in the overlapping EEZs of the Philippines and Taiwan. The Jia Hai Ke 7 was reported to have remained stationary for nearly three days, leading authorities to suspect the deployment of instruments for unauthorized research. While the PCG noted the vessel has the capability to locate subsea cables, they stated there was no direct evidence linking its presence to recent internet connectivity issues in Luzon. Taiwan confirmed the deployment of three patrol vessels to monitor the area south of Oluanpi. ## Timeline ### 2026-10-03: Philippines and Taiwan monitor Chinese vessels in overlapping EEZ The Philippines and Taiwan are monitoring Chinese vessels, including the research ship Jia Hai Ke 7, suspected of conducting unauthorized marine research in overlapping exclusive economic zones. 5 sources. https://clstr.news/cluster/philippines-and-taiwan-monitor-chinese-vessels-in-overlapping-eez ### 2026-10-01: Batanes maritime standoff: Philippine Coast Guard drives away Chinese research vessel The Philippine Coast Guard drove a Chinese research vessel, Jia Hai Ke 7, away from the Batanes region, amid concerns over unauthorized data collection near undersea cables. 5 sources. https://clstr.news/cluster/philippine-coast-guard-forces-chinese-research-vessel-out-of-batanes-waters --- Cite as: Maritime standoff in the Luzon Strait. CLSTR, https://clstr.news/situations/maritime-standoff-in-the-luzon-strait