Australia and Japan Sign Historic $7bn Warship Deal

The Australian government has signed a contract with Japan for the construction of three upgraded Mogami-class frigates, marking the largest defense procurement deal in Australia’s history and the first major sale of Japanese-built warships since World War II. The agreement, valued at approximately AUD 10.5 billion (USD 7 billion), was formalized during a meeting in Melbourne between Australian Deputy Prime Minister and Minister for Defence Richard Marles and Japanese Minister of Defense Minoru Kihara. The vessels, based on Japan’s Mogami-class design, will be modified to meet Australian naval specifications, including enhanced combat systems, extended range, and integration with Australian and allied forces’ communication and weapons networks. Under the deal, the frigates will be built in Japan by Mitsubishi Heavy Industries and Kawasaki Heavy Industries, with the first vessel expected to enter service with the Royal Australian Navy in the early 2030s. The ships will replace the aging Anzac-class frigates and form a core component of Australia’s future surface combatant fleet. The procurement is part of Australia’s broader strategic shift to strengthen defense ties with like-minded Indo-Pacific partners amid growing regional security challenges. Japanese officials described the agreement as a milestone in defense cooperation, noting it represents the largest overseas sale of Japanese military equipment since the country revised its postwar defense export restrictions in 2014. Australian defense officials emphasized that the frigates will be equipped with the Aegis Combat System and capable of operating SM-6 missiles, enhancing Australia’s air and missile defense capabilities. The vessels will also feature undersea warfare capabilities and be designed for operations in both high-end warfighting and humanitarian missions. The deal follows years of negotiation and technical evaluation, including a competitive assessment against alternative designs from European and South Korean shipbuilders. Australia cited Japan’s proven shipbuilding quality, schedule reliability, and technological compatibility with U.S. And allied systems as key factors in the selection. The agreement includes provisions for crew training, logistics support, and sustained maintenance cooperation between the two nations. Both governments have framed the deal as a long-term partnership, with potential for future collaboration on defense technology and joint exercises. No official timeline for the start of construction has been publicly disclosed, though preliminary work is expected to begin in Japan later this year. The final design specifications for the Australian variant are currently under review by the Capability Acquisition and Sustainment Group within the Australian Department of Defence. The deal remains subject to final parliamentary approval in Australia, with funding to be allocated across multiple budget cycles. Japanese officials have noted that the export license for the frigates was granted under strict conditions, including end-use monitoring and restrictions on retransfer without Japanese consent.