What Really Happened at Ayungin? The Clash Over BRP Sierra Madre

Article by F. Palafox

Published on July 22, 2026 12:00PM

MANILA, Philippines — Chinese rubber boats moved toward the BRP Sierra Madre, an old World War II LST-542-class tank landing ship, during an encounter at Ayungin Shoal (Second Thomas Shoal) within the West Philippine Sea. The Philippines said Chinese coast guard personnel approached at close range and injured a Filipino sailor, while Beijing accused Manila of provocative maneuvers. The incident underscores the deepening issue over control of the shoal, where the Philippines maintains a grounded warship as its outpost and China claims sovereignty over the surrounding waters. ¹ ²

What happened

The Philippine military said Chinese coast guard personnel on a rigid-hulled inflatable boat aggressively approached the BRP Sierra Madre, photographed and filmed the vessel, and then struck a Filipino sailor during a confrontation at Ayungin Shoal. The military said the encounter injured one (1) sailor and damaged a rubber boat used by Philippine forces, underscoring the broader issue over the grounded warship that has long served as Manila’s outpost in the area. ³ ⁴ ⁵

Trespass claim

The characterization of Chinese rubber boats as “trespassing” entirely depended on Manila’s sovereignty over Ayungin Shoal, which Beijing vehemently rejects to recognize. China stressed its expansive claim and position over the area, and has repeatedly and unreasonably demanded that the Philippines remove the old World War II ship, a vessel that was grounded in 1999 as a territorial outpost. The Philippine on the other hand pushes its sovereign position, with movements toward the ship that are more accurately described as resupply or support operations for personnel stationed there, rather than as unlawful intrusion as framed by Beijing. ⁶ ⁷

Evidence and narrative

Beijing has argued that Philippine boats ignored warnings and behaved dangerously, while state-linked coverage has accused Manila of distorting the incident. ⁸ Philippine officials, however, said China Coast Guard personnel approached the BRP Sierra Madre at close range, circled the vessel while taking photos and video, and then escalated the encounter by striking a Filipino sailor and damaging a rubber boat. Mainstream reporting has generally described the episode as a clash in a long-running territorial standoff around the Philippine outpost at Ayungin Shoal, where China maintains invasive claims. ³ ⁴

The Chinese Embassy Manila shared an image depicting a standoff involving a grounded Philippine vessel, the BRP Sierra Madre, and a Chinese patrol boat in the West Philippine Sea. The image highlights the ongoing tensions with flags marking the positions of the vessels.

Philippine officials say the confrontation unfolded inside the country’s exclusive economic zone near the BRP Sierra Madre, a commissioned Navy outpost at Ayungin Shoal. They argue that China’s presence, as reflected in the images posted in Chinese Embassy Manila Facebook account, emphasizes gray-zone tactics designed to pressure Philippine forces and advance an expansive claim Beijing does not have sovereignty over under the 2016 arbitral ruling. It was well documented in their image and video posts, that the background seen during confrontation is the BRP Sierra Madre. ⁵ ¹⁰

Beijing's framing of permission for MEDIVAC

The Philippines says it has every right to operate within its exclusive economic zone, including at Ayungin Shoal, which it says was affirmed by the 2016 arbitral ruling as a low-tide elevation within its EEZ and continental shelf. Manila also says the BRP Sierra Madre is a commissioned Philippine Navy vessel lawfully stationed there, and that its rotations and resupply missions are legitimate activities in its own maritime area. By that account, the dispute is not about an unlawful Philippine presence, but about China’s effort to challenge that presence far from its own coast. ³ ⁹

On the medical evacuation, Philippine officials say the injured personnel were being treated after a China Coast Guard crew member struck a Filipino sailor on the head with a wooden baton during a coercive encounter near the grounded ship. They reject Beijing’s framing of the evacuation as something “permitted” by China, arguing instead that the need for the evacuation was caused by the assault itself. ⁹

European Union reiterates the 2016 Arbitral Award as final and legally binding

The European Union (EU) Delegation to the Philippines expressed its concern regarding the incident near Ayungin Shoal in the West Philippine Sea, which resulted in the injury of a Philippine Navy Servicemen. The EU reaffirms its unwavering commitment to the UNCLOS, which sets out the International legal framework within which all activities in the oceans and seas must be carried out, and reiterates that the 2016 Arbitral Award is final and legally binding upon the parties to the proceedings.

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Notes:

¹ Reuters. China, Philippines trade accusations over South China Sea encounter. https://www.reuters.com/world/china/chinese-coast-guard-struck-navy-sailor-south-china-sea-encounter-says-philippine-2026-07-20

² South China Morning Post. Chinese and Philippine maritime forces clash at Second Thomas Shoal. https://www.scmp.com/news/china/diplomacy/article/3361250/chinese-and-philippine-maritime-forces-clash-second-thomas-shoal

³ ABCNEWS. Philippines condemns Chinese coast guard for injuring Filipino sailor. https://abcnews.com/International/wireStory/philippines-condemns-chinese-coast-guard-injuring-filipino-sailor-134910103

⁴ AP NEWS. Philippine military condemns Chinese coast guard’s use of water cannon on its boat in disputed sea. https://apnews.com/article/philippines-china-south-china-sea-territorial-disputes-bdfd261518a34a5d86f50efd0f2228d8

⁵ Adnkronos. Philippines: army, ‘sailor injured by Chinese Coast Guard’. https://english.adnkronos.com/2026/07/20/philippines-army-sailor-injured-by-chinese-coast-guard/

⁶ BBC News. 'Dangerous manoeuvres' in China and Philippines' cat-and-mouse sea chase. https://www.bbc.com/news/world-asia-65421115

⁷ ECNS. China Coast Guard urges the Philippines to stop infringements, provocations, hype near Ren'ai Jiao. https://www.ecns.cn/cns-wire/2026-07-21/detail-ihfhqwkz8161502.shtml

⁸ Embassy of the People's Republic of China in the Republic of the Philippines. Statement of the Ministry of Foreign Affairs of The People’s Republic of China On the Enactment by the Republic of the Philippines Of Its “Maritime Zones Act” and “Archipelagic Sea Lanes Act”. https://ph.china-embassy.gov.cn/eng/sgdt/202412/t20241220_11511746.htm

⁹ Tarriela Facebook Account. On permission for MEDIVAC. https://web.facebook.com/share/p/1AJ6RoL6Jb/

¹⁰ Chinese Embassy Manila Facebook Account. Statement by the China Coast Guard on the Deliberate Provocation by the Philippines’ Illegally Grounded Vessel BRP Sierra Madre (LT-57). https://web.facebook.com/share/v/1Bpb7aspr5/