Japan's Defense Strategy Shift in Balikatan 2026: The First Overseas Live Fire of the Type 88 Surface-to-Ship Missile and a New Phase in Japan-Philippines Security Cooperation

On May 6, 2026, at 10:30 AM, two Type 88 Surface-to-Ship Missiles (SSM-1) of the Japan Ground Self-Defense Force were launched from the coastline of Ilocos Norte province in northwestern Luzon, Philippines. The target was the decommissioned corvette of the Philippine Navy, "BRP Quezon (PS-70)," located approximately 75 kilometers offshore. About six minutes after the launch, the missiles hit the target, and the ship subsequently sank. This seemingly routine live-fire exercise marks a historic moment as it is the first time since 1945 that Japan has launched offensive missiles from foreign territory, and it should be recorded as a decisive turning point in Japan's post-war defense policy.

This exercise was conducted as part of the annual joint military exercise "Balikatan 2026," hosted by the Philippines and the United States. This year's Balikatan is the largest ever, with approximately 17,000 troops participating from the Philippines, the United States, Japan, Australia, Canada, France, and New Zealand. About 1,400 personnel were dispatched from Japan, participating as a full-fledged operational country across land, sea, and air components. This fundamentally changes Japan's previous forms of involvement, which were limited to observer participation and rear support, and it was also the first large-scale deployment based on the Japan-Philippines Reciprocal Access Agreement (RAA) that came into effect on September 11, 2025.

Ilocos Norte, the launch site for the Type 88 Surface-to-Ship Missiles, is strategically located about 400 kilometers south of Taiwan and directly overlooks the Luzon Strait, one of the most important maritime corridors connecting the South China Sea and the western Pacific. Controlling this strait is critically important for containing the ability of the Chinese Navy to advance from the South China Sea into the deep operational waters of the Pacific east of Taiwan. The exercise scenario for Balikatan 2026 reflected this geopolitical reality, envisioning layered coastal defense operations against hostile naval forces and amphibious assault units. The exercise demonstrated a framework where the Naval Strike Missile launched from the U.S. Marine Corps' NMESIS (Naval Expeditionary Ship Interdiction System), GMLRS rockets from the U.S. Army's HIMARS, the Philippine military's C-Star anti-ship missile system, and Japan's Type 88 missiles worked together to establish a dispersed coastal firing network.

The Type 88 Surface-to-Ship Missile System is a domestically developed anti-ship weapon based on the ASM-1 anti-ship missile for the Air Self-Defense Force, developed by Mitsubishi Heavy Industries and deployed to the Ground Self-Defense Force since 1988. The missile is approximately 5.08 meters long, has a diameter of 350 millimeters, and weighs about 660 kilograms, carrying a 225-kilogram high-performance explosive warhead. After launch acceleration by a solid-fuel booster, it transitions to cruise flight powered by a turbojet engine, with a range estimated at 150 to 200 kilometers. It uses inertial navigation for mid-course guidance and switches to active radar homing in the terminal phase, diving towards the target at a sea-skimming altitude. The launch vehicle is configured with a six-pack canister mounted on the chassis of the Mitsubishi Type 74 8x8 large truck.

This exercise served as a strategic signal to the international community, clearly demonstrating that Japan is preparing to fight alongside its allies within the "first island chain." This redefines the operational doctrine of the Type 88, which was originally designed with a focus on the defense of the Japanese homeland during the Cold War. Traditionally, the Ground Self-Defense Force had limited the use of this system to ambush operations along the homeland's coastal areas, utilizing dispersed deployment and terrain concealment to prevent the approach of the Soviet Navy around Hokkaido and the Ryukyu Islands. The deployment in the Philippines has proven that Japan's anti-ship strike capability can be forward-deployed in allied territories, transcending the framework of purely homeland defense. This aligns with a series of policy evolutions promoted by the administration of Sanae Takaichi, including increased defense spending, the development of long-range counterstrike capabilities, and the lifting of restrictions on the export of lethal weapons under the revised three principles of defense equipment transfer on April 21, 2026.

In parallel with this strategic shift, negotiations for the transfer of defense equipment between Japan and the Philippines are also progressing rapidly. On May 5, Defense Minister Shinjiro Koizumi met with Philippine Defense Secretary Teodoro in Manila and agreed to establish a bilateral working group aimed at transferring Japan's Maritime Self-Defense Force escort ships and aircraft to the Philippines. Specifically, the export of the "Abukuma" class escort ship (standard displacement of 2,000 tons, length of 109 meters) is being considered. If realized, this would likely be the first export case of lethal equipment under Japan's revised defense equipment transfer principles.

For the Philippines, acquiring used vessels like the "Abukuma" class is a practical means to bridge the urgent capability gap. Currently, the Chinese Navy has expanded to operate over 400 vessels, including aircraft carriers, destroyers, and submarines, and CSIS reports that by 2025, the estimated operational days of Chinese naval vessels in the East China Sea, South China Sea, Japan Sea, and Pacific will reach 999 ships per day. In contrast, the Philippine Navy possesses only a very limited number of modern surface combatants. The modernization plan called "Re-Horizon 3," which extends to 2033, has a budget of approximately 2 trillion pesos, but the current capability gap remains severe.

At the same time, the United States is also strengthening its forward deployment posture in the region. On May 6, F-22 Raptors from the 90th Fighter Squadron at Joint Base Elmendorf-Richardson in Alaska and the 27th Fighter Squadron at Joint Base Langley-Eustis in Virginia arrived at Kadena Air Base. This latest rotation aims to maintain a continuous high-tech presence in the Indo-Pacific region and enhance interoperability between Japan and the United States. The deployment of F-22s to Kadena and Japan's participation in offensive operations during Balikatan constitute different variables of the same strategic equation.

It is also noteworthy that the Japan Maritime Self-Defense Force's US-2 rescue amphibious aircraft landed in the South China Sea during Balikatan and conducted joint casualty evacuation training with the U.S. amphibious ship "Ashland (LSD-48)." This training, conducted near Oyster Bay on Palawan Island, reflects the strategic importance of the region, which is being developed with U.S. support as a relay point for Philippine military supply missions to the Spratly Islands. Additionally, the helicopter-equipped destroyer "Ise," the transport ship "Shimikita," the escort ship "Ikazuchi," and the C-130H transport aircraft were also deployed, demonstrating the expansion of Japan's integrated operational capabilities.

Overall, Balikatan 2026 transcended the framework of a single-year exercise and served as a symbolic event indicating structural changes in the security architecture of the Indo-Pacific. Japan's defense policy is steadily shifting from a focus on homeland defense to a forward-deployed, alliance-based deterrent posture. The overseas live-fire of the Type 88 missiles is one of its most dramatic expressions. Furthermore, building partnerships through defense equipment transfer is increasingly recognized not merely as an industrial policy concern but as a strategic means to shape the regional balance of power. As China's naval power expansion and maritime assertiveness continue, building a layered deterrent network among allies along the first island chain will remain a core issue in Northeast Asian maritime security.