JS Tatsuta

For other ships with the same name, see Japanese ship Tatsuta.

JS Tatsuta (Japanese: たつた; Hull Number: FFM-11) is a frigate of the Japan Maritime Self-Defense Force and the eleventh ship of the Mogami-class.^[1] She was named after the Tatsuta River, a tributary of the Yamato River that flows near Ikoma in the Nara Prefecture.^{[2][better source needed]} Tatsuta is the third ship to bear the name, after the Imperial Japanese Navy unprotected cruiser Tatsuta, and the Tenryu-class cruiser Tatsuta.^[3]

Tatsuta during her launch ceremony
History
Japan
Name	Tatsuta
Namesake	Tatsuta River
Builder	Mitsubishi Heavy Industries Nagasaki Shipyard
Cost	Approximately 46 to 47 billion yen
Laid down	3 July 2024
Launched	2 July 2025
Commissioned	December 2026 (scheduled)
Identification	FFM-11
Status	Fitting out
General characteristics
Class & type	Mogami-class frigate
Displacement	3,900 t (3,800 long tons; 4,300 short tons) (standard) 5,500 t (5,400 long tons; 6,100 short tons) (full load)
Length	132.5 m (434 ft 9 in)
Beam	16.3 m (53 ft 6 in)
Draft	9 m (29 ft 6 in)
Propulsion	CODAG 1 × Rolls-Royce MT30 gas turbine 2 × MAN Diesel V28/33DD STC engine 2 × shafts
Speed	30 knots (56 km/h; 35 mph)
Boats & landing craft carried	2 × RHIB, UUV, USV
Crew	90-100
Sensors & processing systems	OPY-2 (X-band multi-purpose AESA radar) OAX-3(EO/IR) OQQ-25 (VDS + TASS) OQQ-11 (Mine-hunting sonar) OYQ-1 (Combat management system) OYX-1-29 (Console display system)
Electronic warfare & decoys	NOLQ-3E (Passive radar system + Electronic attack capability is integrated into the main radar antenna), Chaff dispenser
Armament	1 × 5 in (127 mm) Mk-45 Mod 4 naval gun 2 × missile canisters for a total of 8 Type 17 anti-ship missiles 1 × SeaRAM Type 12 torpedoes Simplified mine laying equipment 2 × Mk-41 VLS (16 cells total) Naval version of Type 03 Chū-SAM 2 × Remote weapon station
Aircraft carried	1 × SH-60K patrol helicopter

Construction and career

As part of the Mid-Term Defense Program, Tatsuta was ordered from Mitsubishi Heavy Industries (MHI) in the fisical year 2023, with her keel being laid down at MHI's Nagasaki Shipyard on 3 July 2024. The ship was christened and launched on 2 July 2025, and after a period of being fitted out and undergoing sea trials, she is scheduled to be commissioned in December 2026.^[1]