Satellite shows possible Scarborough structure

Newsweek reported on June 2 that commercial satellite imagery showed a possible new object at Scarborough Shoal, the disputed South China Sea feature controlled by China since 2012 but claimed by the Philippines. The report cited analysis by SeaLight, a Stanford-affiliated maritime transparency group, of imagery captured on May 28 and reviewed alongside an additional image from May 26. Philippine officials said they were still trying to determine what the object was. The finding comes weeks after Reuters reported that satellite images showed China using ships and a floating barrier to tighten control over the entrance to the shoal. ### Where exactly was the object seen? SeaLight said the object appeared at the southern mouth of Scarborough Shoal’s lagoon, near the entrance channel that functions as a narrow chokepoint into the feature. The group said the reflective object was visible on the reef flat in imagery from at least May 26 and May 28, which it said suggested a persistent feature rather than a temporary imaging artifact. (newsweek.com) Newsweek reported that the imagery was obtained through geospatial platform SkyFi and came from Satellogic. SeaLight assessed the object at less than 10 meters, or about 32 feet, in diameter. ### Do analysts know whether it is a building, buoy or marker? Ray Powell, SeaLight’s director, said the group could not yet determine whether the object was a fixed structure, a reef-mounted marker, a buoy-type device, a monitoring instrument or another installation. (manilatimes.net) Powell said that if the object were confirmed to be a fixed installation, it would raise questions about compliance with the 2002 Declaration on the Conduct of Parties in the South China Sea, which calls for self-restraint on disputed, uninhabited features. (newsweek.com) Gilberto Teodoro Jr., the Philippine defense secretary, said on Monday that Manila was working from “raw information” and was not yet sure it was dealing with a structure. “Once in a while, they put a buoy or something there, or it may have drifted in from outside,” Teodoro told reporters, according to Naval News. ### Why is Scarborough Shoal so sensitive? Scarborough Shoal lies about 220 kilometers, or 137 miles, west of Luzon and has long been a flashpoint in the South China Sea dispute. (newsweek.com) China seized effective control of the shoal after a standoff with the Philippines in 2012 and has since maintained a constant presence there, while a 2016 international arbitral ruling invalidated China’s broader South China Sea claims, a decision Beijing rejects. (navalnews.com) AMTI, the Asia Maritime Transparency Initiative at CSIS, said China has maintained a permanent coast guard presence at Scarborough and expanded patrol activity around the feature and in waters east of it. The group said remote-sensing data showed Chinese patrols aimed at intercepting Philippine ships heading toward the shoal. ### Has anything similar happened there before? Reuters reported on April 15 that satellite imagery showed a 352-meter floating barrier across the entrance to Scarborough Shoal, with Chinese vessels positioned around the feature. (navalnews.com) Philippine Coast Guard spokesperson Jay Tarriela said at the time that six Chinese maritime militia vessels were observed within the shoal and three others outside it. (amti.csis.org) AMTI reported in November 2025 that Chinese buoys installed at Scarborough had raised concern in Manila about the possibility of future permanent facilities, though the group said no Chinese structures had yet been confirmed on the shoal itself. That earlier episode involved monitoring buoys and debris, not a confirmed fixed installation. ### What happens next? Philippine military chief Gen. Romeo Brawner Jr. said the military had recently monitored a suspected small structure measuring about 6 by 6 square meters inside the shoal and was still investigating whether it was floating or fixed, according to Naval News. (usnews.com) Philippine and U.S. forces also carried out a maritime cooperative activity near Scarborough Shoal from May 26 to 30, with the U.S. Coast Guard cutter Midgett joining the patrol, as Manila continues verification of the object seen in the imagery. (amti.csis.org) (navalnews.com)