Why Taiwan’s record count of 244 Chinese ships in one month is setting off alarms
Taiwan says 244 Chinese government-linked ships were detected in July, a record that analysts link to rising pressure and seabed mapping.
Taiwan says the number of Chinese government-linked ships around its main island jumped to a record 244 in July, a surge that worked out at nearly eight a day. The figure has sharpened concern not just because of the volume, but because officials and analysts say many of these vessels can help Beijing tighten pressure without firing a shot.
A sudden spike around Taiwan
According to Taiwan’s coast guard, 244 Chinese coast guard, research and other ships were detected around the island’s main landmass in July. That was a steep rise from 55 in June and 30 in May, and it was also far above the 58 recorded in July 2025.
In the first 21 days of August, Taiwan said it had already detected 152 vessels. Roughly 60 per cent of the ships counted in July were coast guard vessels, while research ships and other government boats made up the rest.
The tally does not include Chinese warships, which Taiwan says are deployed around the island on a near-daily basis by China’s military. Since May, the number of Chinese ships detected around Taiwan and several of its outer islands has reached 1,247, according to coast guard figures.
A senior Taiwan coast guard official said the situation was becoming increasingly severe because the number of Chinese government vessels in the waters surrounding Taiwan had risen, with a marked increase in July.
Why these ships matter
The increase has added to security concerns because the vessels are not being viewed as routine civilian traffic. Taiwan’s coast guard and outside analysts say many Chinese research ships gather oceanographic information that can be used by the military, especially for anti-submarine warfare.
Ryan Martinson, an expert on China’s maritime strategy at the US Naval War College, said Chinese research vessels are run by civilian institutes, but the data they collect is shared with the military. He said that information would be highly useful to Chinese naval forces operating in those waters in the event of a conflict, and that it is especially important for anti-submarine warfare and submarine warfare.
Martinson said he had observed a very large increase in Chinese research vessels operating around Taiwan in the past couple of months, particularly to the east of the island. In his view, the tactic itself is not new, but the scale of the operations around Taiwan is unprecedented.
Taiwanese officials and analysts describe this broader approach as a grey zone tactic, meaning activity designed to assert control and wear down an opponent without crossing into open war.
A pressure campaign that goes beyond ship numbers
Beijing claims democratic Taiwan as part of its territory and has threatened to use force to annex it, even though Taiwan says China’s Communist Party has never ruled the island. China also claims jurisdiction over the waters around Taiwan.
Taiwan’s coast guard says Chinese coast guard and research vessels have been used to project that authority, much as Beijing has long dispatched similar ships across the Asia-Pacific, particularly in the contested South China Sea.
The maritime buildup is feeding concern in Taiwan about more than surveillance. As the island lives under the constant threat of invasion, the heavier Chinese presence at sea has also raised fears of a potential quarantine or blockade that could stop ships carrying energy and other critical supplies from entering or leaving Taiwan’s ports.
A Taiwanese security official recently accused China of authoritarian expansionism and said Beijing was constantly pushing limits through what the official called an incremental salami-slicing approach.
The ship movements drawing the closest scrutiny
Taiwan’s coast guard previously said China operates more than 120 oceanographic research vessels and that it is tracking about 41 that operate in Taiwan’s waters.
One example it highlighted was the Tong Ji, a Chinese vessel that circled Taiwan in May. Taiwan said the ship tracked the edge of the island’s restricted waters and refused coast guard orders to leave. The coast guard said its activity likely involved oceanographic sampling and seabed survey work that could feed China’s anti-submarine warfare databases.
In June, China carried out its first law enforcement patrol in waters east of Taiwan. Earlier in August, Beijing also announced traffic control measures for the Taiwan Strait as Typhoon Dolphin moved toward the region.
Another closely watched case involved the research vessel Xiang Yang Hong 03. Jason Wang, chief operating officer of ingeniSPACE, said the vessel was seen in August operating within the exclusive economic zones of Taiwan and Japan, moving above deep sea trenches and telecommunications cables. He said the ship was escorted by a Chinese coast guard vessel and a fishing boat that was part of China’s maritime militia, which he described as the first time maritime militia had been seen escorting a research vessel in Taiwan’s waters.
Wang said the aim was to gather fresh hydrographic data from the Ryukyu Trench and East Taiwan Trench for anti-submarine warfare, while also denying US and allied vessels the chance to do the same.
Taken together, analysts say these deployments amount to more than a statistical jump. Martinson said the developments represented a clear escalation in Beijing’s effort to exercise jurisdiction over the waters around Taiwan, while pressuring the island’s leadership and undermining its sovereignty and sovereign rights.
