Japan and the Philippines have taken a significant step toward deeper defense cooperation by agreeing to establish a bilateral working group to explore the transfer of Japan Maritime Self-Defense Force (JMSDF) vessels, including used destroyer escorts. The initiative could become a landmark case in Tokyo’s evolving arms export policy.
The announcement was made on May 5 in Manila following talks between Koizumi Shinjiro and Gilberto Teodoro. At a joint press conference, Koizumi confirmed that the working group would examine the potential export of naval platforms and aircraft, including the JMSDF’s Abukuma-class destroyer escorts and the TC-90 training aircraft.
At the joint press conference, Koizumi said he aims to achieve the early export of destroyer escorts through working-level consultations.
If realized, the deal could represent Japan’s first export of lethal military equipment under its revised “Three Principles on Transfer of Defense Equipment and Technology,” updated on April 21 to allow such transfers under specific conditions.
Abukuma-class as a Near-Term Capability Solution
Discussions are expected to focus on the Abukuma-class destroyer escort, a six-ship class commissioned between 1989 and 1993. With a standard displacement of around 2,000 tons, the vessels are designed for coastal defense and anti-submarine warfare.
While lacking area air-defense missiles, the class features a balanced weapons suite, including a 76mm main gun, Close-In Weapon System (CIWS), Harpoon anti-ship missiles, ASROC anti-submarine rockets, and lightweight torpedoes. These capabilities make the ships well-suited for littoral operations and maritime security missions in archipelagic environments such as the Philippines.
Japanese officials are reportedly considering a grant-based transfer, although this would require additional legal arrangements. Delivery could take place as early as 2027, depending on the pace of negotiations.
Strategic Context: Responding to China
The initiative reflects growing strategic alignment between Tokyo and Manila amid rising tensions in the South China Sea and East China Sea. Both countries have reiterated opposition to unilateral attempts to change the status quo by force.
For Japan, strengthening the Philippines’ maritime capabilities supports the protection of critical sea lanes, including the Bashi Channel, through which a significant portion of its energy imports transit. For Manila, the urgency is more immediate.
While China operates a fleet exceeding 400 vessels, the Philippine Navy fields only a limited number of modern surface combatants, centered on two José Rizal-class frigates, with the more capable Miguel Malvar-class now entering service. This disparity has driven Manila’s push to accelerate naval modernization.
Modernization Pressures and Interim Solutions
The proposed transfer comes as the Philippines continues to implement its Armed Forces modernization program, structured into Horizon phases.
Horizon 1 (2013–2017) and Horizon 2 (2018–2022) introduced key capabilities, including FA-50 light combat aircraft and José Rizal-class frigates built by South Korea’s Hyundai Heavy Industries. However, progress has been uneven.
The expanded “Re-Horizon 3” program (2023–2033), approved by President Ferdinand Marcos Jr., aims to address external threats with a projected budget of approximately 2 trillion pesos. However, ongoing financial commitments and implementation delays could constrain near-term capability development.
In this context, used platforms such as the Abukuma-class are seen as a pragmatic solution to bridge capability gaps, providing Manila with additional hulls while awaiting the delivery of new-build assets later in the decade.
Interoperability and Integration Challenges
Despite their potential utility, integrating Japanese-built vessels into the Philippine Navy presents challenges. Manila’s recent acquisitions have been largely based on South Korean platforms, creating a degree of standardization in systems, logistics, and training.
Introducing Japanese vessels would require adjustments in maintenance infrastructure, supply chains, and crew training, potentially increasing lifecycle costs and operational complexity. These interoperability considerations are likely to play a key role in Manila’s evaluation.
Nevertheless, the Philippine Navy has demonstrated a willingness to adopt used platforms when operationally necessary, as seen in its acquisition of a former South Korean Pohang-class corvette for anti-submarine training.
Expanding Scope of Cooperation
The working group is expected to examine not only naval vessels but also potential transfers of aircraft and surveillance systems. Japan has previously supplied TC-90 training aircraft to the Philippines and is considering additional transfers.
Interest also extends to Japanese air surveillance radar systems, which have already been deployed in the Philippines and received positive evaluations. Defense cooperation between the two countries has expanded steadily, including the entry into force of a Reciprocal Access Agreement (RAA) in 2025, enabling closer operational coordination and joint training.
Outlook
The potential transfer of Abukuma-class vessels represents a critical test case for Japan’s evolving defense export framework. Since 2014, Tokyo has gradually relaxed restrictions on arms exports, driven by a deteriorating security environment and the need to sustain its defense industrial base.
While discussions are going on, the establishment of a formal working group signals growing momentum. For the Philippines, the decision will involve balancing immediate operational needs against long-term sustainability and interoperability.
For Japan, the outcome will shape the future direction of its defense export policy and its role in regional security. As tensions in the Indo-Pacific persist, the potential transfer of Abukuma-class vessels could become a defining example of how regional partners are adapting to a more contested maritime environment.
