China’s drone-laid mines aim to trap US in a Taiwan war

China’s minelaying drones point to a new way of enforcing a Taiwan blockade, using stealthy, autonomous systems to disrupt maritime access and deny entry to contested waters.

The South China Morning Post (SCMP) reported this month that China’s People’s Liberation Army (PLA) could deploy minelaying drones in a Taiwan conflict, targeting waters around Japan’s Ryukyu Islands and the Philippines, based on an analysis published in the Chinese military magazine Shipborne Weapons.

The report outlines how the PLA would use AJX002 extra-large unmanned underwater vehicles (XLUUVs) for “offensive minelaying” missions aimed at key maritime corridors, ports and shipping lanes along the First Island Chain to disrupt supply routes from potential interveners such as the US and Japan.

Rather than mining Taiwan’s immediate vicinity, the strategy emphasizes isolating the island by cutting off external access through coordinated operations involving missiles, aircraft, submarines and carrier strike groups.

The AJX002, unveiled in Beijing in September 2025, can carry up to 20 naval mines per mission and has an estimated range of up to 1,000 nautical miles, operating autonomously with stealth and networked coordination for optimized deployment.

The objective would be to trap adversary vessels in port or deny entry to blockade zones, severing supply lines and inflicting economic pressure as part of a broader effort to isolate Taiwan.

This points to a strategy focused less on sealing Taiwan itself than on controlling the external arteries that sustain it.

In a Taiwan blockade, offensive mining functions as a layered force multiplier within China’s gray zone and anti-access/area denial (A2/AD) strategy, shaping access, escalation dynamics and intervention decisions.

Bonny Lin and other writers note in an August 2024 Center for Strategic and International Studies (CSIS) report that China could combine covert minelaying with overt signaling, such as live-fire exercises and missile overflights in a blockade scenario.

In implementing such tactics, Lin and others describe a “joint blockade campaign” involving PLA Navy (PLAN) surface action groups positioned around Taiwan, alongside China Coast Guard (CCG) and Maritime Safety Administration (MSA) vessels that enforce the blockade by “interdicting noncompliant ships” under a law-enforcement framing.

In effect, mines extend the reach of this screen, turning compliance enforcement into a physically enforced barrier.

As for which Taiwanese ports may be targeted in offensive minelaying operations, Cheng-kun Ma and K. Tristan Tang note in a November 2024 Jamestown Foundation report that PLA exercise zones were positioned outside key ports including Keelung, Taipei, Taichung, Anping, Kaohsiung, Hualien and Su’ao.

Meanwhile, deployments in eastern waters demonstrated an ability to threaten Taiwan’s force preservation areas and compress its available operational space, reducing Taiwan’s ability to redistribute forces or sustain maritime throughput under pressure, the report said.

Beyond XLUUV deployment, Thomas Hammes notes in a March 2025 Atlantic Council report that sea mines are “easy to transport” and can be covertly deployed by almost any ship, including commercial vessels in China’s naval reserve. He adds that even cleared areas “can easily be reseeded by false-flagged commercial or fishing vessels,” enabling sustained disruption to maritime traffic and making clearance efforts temporary rather than decisive.

This persistence is central to China’s gray-zone approach, in which ambiguity and repetition shape the battlespace without triggering open conflict.

Todd Helmus and co-authors note in a November 2024 RAND report that China layers the PLAN, CCG and maritime militia to “overwhelm opponents and make US or allied responses difficult” while employing gradual escalation to advance its interests and “prepare the battlespace for a potential future conflict.”

Sea mines fit neatly into this model by adding a passive but persistent layer of coercion that does not require continuous force presence. This gray-zone approach is also reflected in how regional actors, particularly Japan, are preparing for a potential blockade of Taiwan.

Yasuhiro Kawakami argues in a February 2022 Sasakawa Peace Foundation (SPF) article that moored mines laid in a Taiwan contingency could drift into waters around Japan if their mooring wires break, disrupting shipping and endangering lives.

He adds that such drift could constrain the Japan Coast Guard and the Japan Maritime Self-Defense Force (JMSDF) in their vigilance activities, particularly around the Senkaku Islands, effectively pulling Japanese territory and forces into the operational envelope of a Taiwan contingency.

This same logic of layered pressure and battlespace preparation also informs China’s conventional warfighting doctrine, particularly in its use of mines for sea denial. Within the First Island Chain, mines could also reinforce China’s South China Sea bastion by creating a defensive envelope around its nuclear ballistic missile submarines (SSBNs) and complicating US submarine access while reinforcing a controlled operating environment for China’s sea-based nuclear deterrent.

While mines enhance survivability within China’s bastion strategy, their broader significance lies in shaping escalation dynamics and intervention decisions in a Taiwan conflict.

At this point, the effect of mines shifts from shaping access to shaping decisions. At the strategic level, Mark Cancian and co-authors note in a July 2025 CSIS report that Chinese submarines and mines impose heavy attrition while accelerating escalation pressures.

They find that without US intervention, “China’s submarines and mines destroyed 40% of inbound ships to Taiwan,” even with maximum Taiwanese resistance. They add that convoys could sustain Taiwan “often at a huge cost,” and that “any blockade creates escalatory pressures that are difficult to contain.”

However, such a strategy would also carry risks for China, including potential disruption to its own commercial traffic, escalation dynamics that could draw in regional powers more quickly and the challenge of sustaining control over contested maritime zones under counterpressure.

Marek Jestrab notes in a December 2023 Atlantic Council report that a coalition response to a Chinese blockade would likely include “escort of merchant shipping through the PRC forces by coalition naval warships” and “mine countermeasure forces identifying minefields for merchant shipping to avoid.” This makes time, rather than firepower alone, a critical variable in any intervention.

However, the effectiveness of these operations hinges on whether the US has reliable mine countermeasure (MCM) capabilities to carry them out under contested conditions. This remains uncertain given the state of the US Navy’s Littoral Combat Ships (LCS), meant to replace the Avenger-class MCM vessels as the primary platform.

A February 2022 US Government Accountability Office (GAO) report finds that the Littoral Combat Ship (LCS) “has not demonstrated the operational capabilities it needs to perform its mission,” citing significant challenges, including mission-essential equipment failures and delays in developing mission modules.

Furthermore, a March 2025 US GAO report attributes these gaps to weak acquisition practices and deficient business cases, noting that immature technologies—particularly for mission systems — delayed capability delivery and reduced the planned capacity of LCS mission packages. The result is not just delayed capability, but reduced capacity to sustain MCM operations at scale.

If these trends persist, a Taiwan conflict may be decided less by fleet engagements than by the ability to sustain access through mined waters, absorb disruption, and manage escalation under sustained maritime denial, where endurance and access—not decisive engagements—determine outcomes.