CHINA COAST GUARD DECLARES "CLEARING OPERATIONS" AT SCARBOROUGH SHOAL, CORDONS OFF SOUTHERN ZONE

"Security! Security! Security! China Coast Guard will conduct regular clearing from local time 11 o'clock to 18 o'clock of March 23."

That was the radio message broadcast by the China Coast Guard (CCG) to vessels at Bajo de Masinloc — also called Scarborough Shoal — on Monday morning. A seven-hour window. Specific coordinates. A defined rectangular zone in the southern portion of the shoal. And no explanation of what "clearing" actually meant.

WHAT THE PCG PLOTTED

Philippine Coast Guard (PCG) spokesperson Rear Admiral Jay Tarriela said his team plotted the coordinates the CCG broadcast and confirmed they formed a rectangular zone in the southern part of the shoal.

What the clearing was supposed to accomplish, Tarriela said plainly: "As to what they meant with clearing operations, we still don't know."

The PCG's read on the operation was not ambiguous, though. Tarriela called it "just another threat to discourage the Filipino fishermen" — pointing out that this has happened before. In previous months, China declared exercise areas for PLA Navy operations at the shoal, and the exercises never materialized. The fishermen were warned. The PLA Navy never came. The effect was the warning itself.

THE DAY BEFORE

The clearing declaration did not come out of nowhere. On Sunday, March 22 — the day before — CCG speedboats had already surrounded and shadowed Filipino fishing boats in the area, moving in close as if to intimidate them.

The PCG deployed three vessels in response: BRP Cape San Agustin, BRP Cabra, and MV Pamalakaya. They brought crude oil, drinking water, and food to about 20 fishing boats already out there.

When the PCG's Cessna Caravan aircraft arrived Monday morning, the CCG harassment temporarily stopped — long enough for the fishermen to refuel and resupply safely.

A PATTERN WITH A TRACK RECORD

March 23 was the latest move in a compressed series of Chinese actions at Scarborough Shoal and elsewhere in the West Philippine Sea throughout March 2026.

On March 17, CCG vessels with hull numbers 21605, 3107, and 3103 deployed inflatable boats to drive Filipino wooden fishing boats away from the shoal — maneuvering so close that Tarriela described the situation as inherently dangerous: wooden fishing boats against a 130-meter steel coast guard vessel.

On March 18, a PCG aircraft flying a routine maritime domain awareness route over the shoal was challenged by radio not just by the PLA Navy but also by the PLA Air Force — the first recorded instance of a dual challenge of that kind.

On March 20, Chinese forces on Panganiban (Mischief) Reef fired flares near a PCG Cessna Caravan conducting a flight over the Kalayaan Island Group, and separately, the Philippine military disclosed that a PLA-N vessel had locked fire-control radar on the BRP Miguel Malvar near Escoda Shoal on March 7. Fire-control radar is used to target weapons systems; the Philippine Navy called the incident "alarming and provocative."

THE LEGAL BACKDROP

The 2016 Permanent Court of Arbitration ruling declared China's effective blockade of Scarborough Shoal's lagoon a violation of international law. The ruling recognized the shoal as a traditional fishing ground for the Philippines, China, and Vietnam — meaning all three nations have established fishing rights there. China does not recognize the ruling.

Since 2012, China has maintained de facto control of the shoal, 124 nautical miles west of Zambales — well within the Philippines' 200-nautical-mile exclusive economic zone.

In September 2025, China declared the area a national nature reserve covering 3,523 hectares. The Philippines condemned it as a pretext for occupation. According to data from the Asia Maritime Transparency Initiative, the CCG recorded 1,099 ship days at Scarborough in 2025 — up from 516 in 2024 — with coast guard vessels present on 352 out of 365 days.

On March 16, Department of Foreign Affairs spokesperson Rogelio Villanueva rejected China's sovereignty assertions outright: "The Philippines flatly rejects China's assertion of indisputable sovereignty over the entire South China Sea. This claim has no basis in fact, no basis in history, and no basis in international law. Full stop."

THE FISHERMEN STAYED

Despite the seven-hour clearing window, despite the coordinates, despite the CCG vessels already positioned in the area — more than 20 Filipino fishing boats remained in the waters around Bajo de Masinloc throughout Monday.

The clearing operation came and went. No reported enforcement. No documented action within the declared zone. The warning broadcast at 11 a.m. expired at 6 p.m., and the fishing boats were still there.