IRIA News

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Japan and Australia have finalized a major defense agreement to jointly develop and supply a new fleet of advanced stealth frigates to Australia for A$10 billion (US$7.2 billion).

The agreement marks one of Tokyo’s most significant military export deals since lifting its long-standing defense export restrictions in 2014.

The agreement was confirmed on April 18, 2026, during talks between Japan’s Defense Minister Shinjiro Koizumi and Australia’s Deputy Prime Minister and Defense Minister Richard Marles.

Both sides signed contracts and a memorandum reaffirming their shared commitment to delivering the new warships under a long-term naval modernization program.

Australia said it will invest around $6 billion over the next decade to acquire the initial fleet, with some estimates placing the broader program at up to $14.4 billion as production and expansion continue.

Mogami-class Frigate

The deal centers on an upgraded version of Japan’s Mogami-class stealth frigates, developed by Mitsubishi Heavy Industries. The warships are designed for multi-role operations, including anti-submarine warfare, surface strike missions, and air defense capabilities.

Under the agreement, the first three frigates will be built in Japan and delivered from 2029 onward. After this initial phase, production will transition to Australia, with construction planned at the Henderson shipyard near Perth in Western Australia. A total of 11 vessels are planned under the current framework.

Australia selected Japan’s design over competing bids, including Germany’s Thyssenkrupp Marine Systems, underscoring Tokyo’s growing competitiveness in advanced naval exports.

Australian Defense Industry Minister Pat Conroy described the procurement as the fastest acquisition of major warships in the Royal Australian Navy’s peacetime history.

He said Australia is working closely with Japanese and domestic industry partners to integrate one of the world’s most advanced general-purpose frigate platforms into its fleet. The program is part of a broader naval expansion strategy aimed at increasing Australia’s major surface combatants from 11 to 26 ships over the next decade.

The frigates are expected to play a central role in securing Australia’s maritime approaches and protecting critical trade routes across the Indian and Pacific Oceans.

Strategic Shift in the Indo-Pacific

The agreement reflects a deeper strategic alignment between Japan and Australia amid growing regional tensions in the Indo-Pacific. Both countries have expressed concern over China’s expanding military presence and territorial disputes in the region.

Japan’s Defense Ministry said the deal strengthens bilateral defense cooperation and reflects Tokyo’s view of Australia as a key security partner in maintaining regional stability.

Koizumi emphasized that the agreement represents a commitment to elevating defense ties between the two countries, while Australian officials described it as a milestone in long-term strategic collaboration.

Both nations are also members of the Quadrilateral Security Dialogue or the Quad, alongside the United States and India; a grouping increasingly focused on maintaining a balance of power in the Indo-Pacific.

The frigate agreement highlights Japan’s gradual shift away from its postwar pacifist defense posture. While Tokyo still maintains restrictions on direct arms exports, it has increasingly allowed joint development and co-production projects with allied nations.

The deal also follows Japan’s growing defense cooperation with other partners, including ongoing joint fighter jet development programs with the United Kingdom and Italy.

For Australia, the agreement provides access to a highly advanced naval platform while strengthening interoperability with key allies in the region.

With construction beginning in Japan and later shifting to Australia, the program represents a long-term industrial and strategic partnership between the two countries. As regional security dynamics continue to evolve, the frigate deal signals a sustained effort by both Tokyo and Canberra to reinforce deterrence and enhance maritime capabilities across the Indo-Pacific.