China Expands 2025 Grey-Zone Fleet Pressure on Taiwan, Using Hundreds of Civilian Vessels
Updated
Updated · navalinstitute.com.au · May 14
China Expands 2025 Grey-Zone Fleet Pressure on Taiwan, Using Hundreds of Civilian Vessels
3 articles · Updated · navalinstitute.com.au · May 14
Chinese maritime pressure on Taiwan shifted in 2025 toward a steadier, year-round campaign using coast guard, fishing, dredging and commercial vessels rather than obvious naval deployments.
That approach lets Beijing harass patrol boats, probe defenses and test blockade or quarantine tactics while keeping incidents below the threshold of open conflict and easier to deny.
Hundreds of sand dredgers and fishing boats have swarmed areas near Matsu, while China’s coast guard has increased patrols, inspections and boardings near Taiwanese-held islands including Kinmen.
Subsea cables have become another pressure point: after two Matsu internet cables were cut in early 2023, Taiwan in 2025 detained Hong Tai 58 and prosecuted its captain over damage to a Taiwan-Penghu link.
The report says the pattern fits China’s integrated 'three sea forces' strategy and argues Taiwan and partners need better vessel tracking, cable protection and coast guard capacity to counter it.
How can Taiwan and its allies effectively counter China's hybrid maritime tactics without risking open conflict in the Taiwan Strait?
Could China's grey-zone maritime pressure on Taiwan trigger a global semiconductor crisis before a single shot is fired?
China’s Massive Grey-Zone Fleet Operations Against Taiwan: Tactics, Impacts, and International Response (2025–2026)
Overview
From 2025 to early 2026, China sharply escalated its grey-zone pressure on Taiwan by deploying a large 'grey-zone fleet' made up of civilian-flagged vessels, fishing boats, maritime militia, and coast guard ships. This coordinated fleet tested Taiwan’s defenses and aimed to normalize China’s presence in contested waters. In December 2025 and January 2026, China mobilized up to 2,000 fishing boats in dense, disciplined formations—an unprecedented display described as 'staggering' by observers. These maneuvers are widely seen as rehearsals for potential blockades or maritime quarantines, signaling a calculated strategy for future escalation without direct military conflict.