JS Tatsuta

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

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

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. She was named after the Tatsuta River, a tributary of the Yamato River that flows near Ikoma in the Nara Prefecture. Tatsuta is the third ship to bear the name, after the Imperial Japanese Navy unprotected cruiser Tatsuta, and the Tenryu-class cruiser Tatsuta.

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.