Japan's Type-25 Participates in the 2026 Sword Exercise for the First Time: PLA's Maritime Denial System Faces New Variables

In late October, the Japan-U.S. "Sword" joint exercise revealed a detail that should not be regarded as a mere equipment showcase: the Japan Ground Self-Defense Force has brought the Type-25 anti-ship missile into a large-scale joint exercise for the first time. The Japanese Ministry of Defense has not disclosed the complete range, warhead, and guidance parameters, but external estimates generally place its range at about 1,000 kilometers, although the word "about" must be retained. The real change is not in the catalog numbers, but in Japan beginning to integrate long-range land-based firepower into the Japan-U.S. joint command, communication, and intelligence processes.

The Change Brought by Type-25 is Not Just One Missile

Image of the Japan Ground Self-Defense Force's Type-12 land-based anti-ship missile launch. The Type-25 is part of Japan's expansion of long-range anti-ship and counterattack capabilities, with specific models still to be confirmed by official sources; the image is for illustrative purposes of the same series of equipment.

NHK reports that the Japanese Defense Minister emphasized the construction of "denial defense" capabilities during talks with the U.S. Secretary of Defense and confirmed the establishment of final assembly and testing facilities for advanced medium-range air-to-air missiles in Japan. Kyodo News' report on the exercise pointed out that the Type-25 was deployed to the southwestern training area. When these two pieces of information are viewed together, the focus becomes clear: Japan is not merely adding a set of launch vehicles, but is simultaneously enhancing long-range firepower, ammunition maintenance, and interoperability with allies.

The Pressure on the PLA Comes from the Target Chain

If the Type-25 can maintain mobile deployment in Miyako, Ishigaki, or even further forward islands, its impact on the PLA primarily increases the uncertainty of maritime task force routes. In the past, assessments of threats from the southwestern islands tended to focus on a few fixed positions; in the future, it will be necessary to consider dispersed launch vehicles, camouflaged positions, drone reconnaissance, and target updates provided by U.S. naval and air platforms simultaneously.

However, this does not mean that Japan has gained unilateral capability to "block the Taiwan Strait." The effectiveness of land-based missiles depends on whether satellites and drones can continuously detect targets, whether data links can operate under strong electromagnetic interference, and whether they can quickly relocate after launch. The longer the missile range, the higher the demands on the command chain and target identification. In simple terms, the Type-25 is more like a spear; what truly determines the level of threat is who provides the eyes, who is responsible for relaying orders, and whether ammunition can be continuously replenished.

Three Calculations the PLA Needs to Reassess

The first is the risk calculation for aircraft carriers and large surface vessels. Task forces now face not only ship-to-ship missiles and air-launched weapons but also land-based launch units dispersed across island roads, ports, and temporary positions. The second is the suppression calculation. To weaken this capability, it is necessary to simultaneously address radar, communication nodes, airfields, and supply facilities; the benefits of single-point strikes will decrease. The third is the political calculation. Japan's integration of long-range firepower into Japan-U.S. exercises means that the question of "whether Japan will intervene" in a conflict in the Taiwan Strait or East China Sea is gradually shifting from a political issue to one of plans and processes.

The author believes that the most concerning aspect of the Type-25 is not the unverified 1,000 kilometers, but rather its potential to become a standardized node in Japan's long-range strike system. Whether Japan can resolve personnel shortages, ammunition stockpiles, island logistics, and communication resilience will determine whether this system is merely a training tool or a sustainable combat capability. For the PLA, the next step is not to observe Japan showcasing a few more launches, but to watch when the Type-25 achieves a stable training frequency, cross-service target chain, and wartime supply plans. If these elements gradually take shape before 2027, how the costs of maritime and aerial operations in the East China Sea will be repriced remains a challenging question.

References

• NHK World-Japan, Japan, US defense chiefs discuss security in Philippines, October 28, 2026, https://www3.nhk.or.jp/nhkworld/news/20261028de67309/
• Kyodo News, Japan deploys long-range missile launcher during major drill with U.S., October 25, 2026, source domain: https://english.kyodonews.net
• Japanese Ministry of Defense public materials and reports related to the 2026 Japan-U.S. "Sword" exercise; specific performance and deployment scale of the Type-25 await further confirmation from official sources.