Japan Commissions 10th Mogami-Class Frigate JS Nagara

Japan’s Maritime Self-Defense Force (JMSDF) commissioned its tenth Mogami-class multi-mission frigate, JS Nagara (FFM-10), on June 29, 2026, at Mitsubishi Heavy Industries’ Nagasaki shipyard. The vessel arrived at Kure Naval Base in Hiroshima Prefecture on July 1, holding a first-arrival ceremony before being assigned to the base’s 2nd Patrol Unit.

Specifications and Weapons Suite

Nagara measures 133 meters in length and 16.3 meters in beam, with a standard displacement of 3,900 tonnes and a full-load displacement of roughly 5,500 tonnes. Its CODAG propulsion plant, combining one MT30 gas turbine with two MAN diesel engines for a combined output near 70,000 horsepower, gives the frigate a top speed exceeding 30 knots. High automation keeps the crew at approximately 90 personnel, well below the complement of many Western frigates of comparable size.

Armament includes a 127mm Mk45 gun, a SeaRAM launcher carrying 11 RIM-116 missiles, eight Type 17 anti-ship missiles fired from two quadruple launchers, and a 16-cell Mk41 vertical launching system for Type 07 VL-ASROC rounds. The ship also carries two triple 324mm torpedo tubes, an OPY-2 AESA radar, an OAX-3 electro-optical/infrared sensor, and embarks one SH-60K helicopter. Nagara is among the Mogami-class units built from the seventh hull onward to feature the Mk41 VLS configuration.

Multi-Mission Design and Program Status

The Mogami class was conceived to consolidate anti-submarine warfare, mine countermeasures, air defense and surface warfare tasks onto a single hull operated by a small crew, relying on modular mission equipment and shipboard automation. Comparable multi-mission concepts underpin Sweden’s Visby class and Germany’s K130 corvettes, though the Mogami design carries greater displacement and a broader weapons mix than either program.

Nagara is the tenth of twelve Mogami-class frigates currently planned for the JMSDF. Its keel was laid on July 6, 2023, at the Nagasaki shipyard, and the ship was launched on December 19, 2024, before roughly a year and a half of fitting-out and trials preceded commissioning. MHI has indicated the twelve-ship run will be followed by three further upgraded Mogami variants. Export interest in Mogami-derived designs continues among prospective operators, with Australia’s and New Zealand’s future frigate requirements cited as programs where Japanese shipbuilders have pitched Mogami-based proposals.

Deployment and Regional Context

Following the first-arrival ceremony at Kure, Nagara will begin post-commissioning training. The addition comes amid a broader expansion of JMSDF surface combatant numbers, as Japan continues building out its fleet against a backdrop of heightened attention to regional maritime activity. The 2nd Patrol Unit at Kure operates across the Seto Inland Sea, the Bungo Channel, the Sea of Japan and the approaches to the East China Sea, covering some of Japan’s busiest and most closely watched maritime approaches.

Sources: Army Recognition, Naval News, Naval Today, Militarnyi