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The Philippines has confirmed an agreement with Japan to acquire five retired Abukuma-class destroyer escorts from the Japan Maritime Self-Defense Force (JMSDF) to strengthen the defense partnership and elevate Manila’s maritime capabilities amid security challenges in the Indo-Pacific.

Philippine Defense Secretary Gilberto Teodoro Jr. announced that the agreement has been finalized in principle, with only administrative procedures remaining before the transfer moves forward.

“Administrative details are being finalized, but it’s already a done deal,” Teodoro said. The five vessels are expected to be transferred over the next two to three years under the expanding defense cooperation framework between Manila and Tokyo.

The transfer is expected to become Japan’s first overseas transfer of retired JMSDF surface combatants under its evolving defense equipment transfer policy.

The agreement represents one of the largest defense equipment transfers between the two countries and reflects Japan’s increasingly active role in supporting regional security partners.

Expanding Philippine Naval Strength

The acquisition is expected to provide a major boost to the Philippine Navy as it continues an ambitious modernization program aimed at improving maritime security and territorial defense.

Before entering operational service, each vessel will undergo a comprehensive technical assessment to determine its condition and identify the modifications required for integration into the Philippine fleet.

The Philippine government also plans to build additional berthing and docking facilities to accommodate the incoming ships and support future naval acquisitions.

The destroyer escorts will complement the Philippine Navy’s growing fleet, which already includes the South Korean-built José Rizal-class guided missile frigates and the newer Miguel Malvar-class frigates. The additional ships are expected to increase the Navy’s patrol, anti-submarine warfare, and maritime security capabilities while improving operational readiness.

For Manila, acquiring retired but capable Japanese vessels offers a faster and more cost-effective solution than waiting for newly built warships under its ongoing Re-Horizon 3 modernization program.

Multi-Mission Platform

The Abukuma-class consists of six destroyer escorts commissioned between 1989 and 1993 for the Japan Maritime Self-Defense Force. Designed primarily for coastal defense and anti-submarine warfare, the class was developed to counter evolving maritime threats while providing a relatively compact yet capable surface combatant.

Each vessel has a standard displacement of approximately 2,000 tons and measures 109 meters in length with a beam of about 13 meters. The ships can accommodate around 120 personnel and achieve speeds of approximately 27 knots.

Powered by two Kawasaki-RR SM1A gas turbines producing roughly 26,650 horsepower and a Mitsubishi S12U MTK diesel engine generating about 6,000 horsepower, the ships are designed for efficient long-range maritime operations.

Although they do not possess area air-defense missile systems or helicopter hangars, the vessels remain well suited for littoral and coastal operations.

Their combat systems include a 76 mm OTO Melara naval gun, Phalanx Close-In Weapon System (CIWS), Harpoon anti-ship missiles, ASROC anti-submarine rocket launchers, lightweight torpedoes, electronic warfare systems, fire-control radars, surveillance sensors, and advanced navigation equipment.

These capabilities allow the ships to conduct anti-submarine warfare, maritime patrol, surface engagement, and coastal security missions.

Japan is gradually replacing the Abukuma-class with the larger and more advanced Mogami-class frigates, which offer enhanced air defense, anti-submarine warfare, land-attack capabilities, and improved automation.

Growing Defense Cooperation

The planned transfer builds on rapidly expanding defense cooperation between Japan and the Philippines over the past several years.

Defense cooperation has strengthened through a security framework signed in 2023 and has expanded further with the Reciprocal Access Agreement, which facilitates closer military cooperation, joint exercises, and operational coordination between the two countries.

The two governments also established a bilateral working group earlier this year to accelerate consultations on transferring retired JMSDF platforms, including the Abukuma-class destroyer escorts and TC-90 training aircraft.

Japan has additionally supported Philippine defense modernization through its Official Security Assistance program by providing coastal surveillance radar systems, rigid-hulled inflatable boats (RHIBs), related equipment, and infrastructure support.

The latest agreement reflects both countries’ commitment to enhancing interoperability and maritime security cooperation.

Strategic Importance

The transfer comes at a time of increasing maritime tensions in the Indo-Pacific, particularly in the South China Sea, where the Philippines continues to face frequent confrontations around disputed waters.

China possesses one of the world’s largest naval forces, with well over 100 major surface combatants, while the Philippine Navy remains comparatively small despite ongoing modernization efforts.

The additional destroyer escorts are expected to strengthen the Philippines’ ability to conduct maritime patrols, protect sea lines of communication, monitor its exclusive economic zone, and improve anti-submarine warfare capabilities.

The acquisition also demonstrates Japan’s growing willingness to use defense equipment transfers as a strategic tool to enhance the capabilities of like-minded regional partners while contributing to a stable and rules-based maritime order.

For Japan, the transfer highlights the evolution of its defense export policy and reflects Tokyo’s broader strategy of supporting regional security through practical defense cooperation rather than solely through domestic military modernization.

Integration Challenges

Despite the benefits, integrating the Japanese-built vessels into the Philippine Navy will require careful planning.

The Navy will need to establish maintenance and logistics support, secure spare parts, train crews, and develop the necessary infrastructure to sustain operations. Since many of the Philippines’ recent naval acquisitions have come from South Korea, integrating Japanese platforms will require adjustments in maintenance procedures and supply chains.

Nevertheless, defense officials believe the operational advantages offered by the Abukuma-class outweigh these challenges, particularly as the vessels can significantly enhance naval capability within a relatively short timeframe.

Once delivered, the five destroyer escorts are expected to become an important component of the Philippine Navy’s modernization efforts and further strengthen defense cooperation between Manila and Tokyo as both nations work to promote stability, freedom of navigation, and maritime security across the Indo-Pacific.