JS Mogami (FFM-1) is the lead ship of the Mogami-class frigates of the Japan Maritime Self-Defense Force (JMSDF).

[1] In the same year Mitsubishi Heavy Industries (MHI) unveiled the frigate's first concept model (30FF) which they have been developing with their own funds.

[2][3] The 30DX design has an overall length of 130 metres (426 ft 6 in), breadth of 16 metres (52 ft 6 in), a standard displacement of 3,900 tons with a full load displacement of about 5,500 tons, and a maximum speed of over 30 knots (56 km/h; 35 mph).

[6] Mogami was laid down on 29 October 2019 at Mitsubishi Heavy Industries, Nagasaki and launched on 3 March 2021,[7][8] four months behind schedule because of problems with the British MT30 gas turbines.

[11] The ceremony was attended by Makoto Oniki, Vice Minister of Defense, Ryo Sakai, Chief of the Maritime Staff, and Atsuo Suzuki, Director General of the Defense Acquisition Agency.