Akizuki Class Destroyer

The Akizuki class destroyer is a future destroyer class of the JMSDF - four ships are planned initially. The class is designed partly to "guard" Aegis destroyers in the Missile defense (MD) missions. This class was used to be called "19DD", derived from the Japanese calendar, specifically the 19th fiscal year of the Heisei period (2007).

The design of this class derives from the one of the Takanami class destroyer, but there are many points improved. Main gas turbine engines are standardized with the power upped version of the Rolls-Royce Spey SM1C in contrast to the combination of the Rolls-Royce SM1C and the General Electric LM2500 which is used in Takanami-class.

The main features of the class are its enhanced C4ISR and AAW capability with the OYQ-11 advanced combat direction sub-system (ACDS) and the FCS-3A AAW weapon sub-system.

OYQ-11

This is the first CDS adopting fully distributed computing archtechture with the AN/UYQ-70 workstations and Link 16 capability for general-purpose destroyers of JMSDF. In addition to the CDS, this class is equipped with SATCOM terminals with Superbirds for the MOF system. The MOF, Maritime Operation Force System is the operational C4I system commonly used in the fleet of the JMSDF, based on the ILOG architecture and interoperable with other JSDF forces. And there are also USC-42 DAMA terminals for the GCCS-M, the American counterpart of the MOF system.

FCS-3A

This is the AAW weapon system of Japanese make. It consists of two main components, one is the dual-band and multimode radar system, and the other is the fire-control system. The FCS-3A system is the derivative of the FCS-3 system of the Hyūga class helicopter destroyer, but this system is introduced with the local area defense (LAD) capability. The SAM system integrated with FCS-3A is ESSM.

And also ASW and EW capabilities are enhanced with the OQQ-22 integrated sonar suite sub-system (hull-sonar and OQR-3 towed array; Japanese equivalent of the American AN/SQQ-89) and the NOLQ-3D digitalized EW suite sub-system. These sub-systems are integrated with NOYQ-1B Wide area network. The totality of these systems are comparable to the one of the Zumwalt class destroyer.

Akizuki Class Destroyer
Preceded by:	Takanami-class destroyer
Cost:	DD115: JPY84.4 billion $893 million (constant 2009 USD)
Planned:	4
Completed:	1
General characteristics
Type:	Destroyer
Displacement:	5000 tonnes standard 6800 tonnes full load
Length:	150.5 m (493 ft 9 in)
Beam:	18.3 m (60 ft 0 in)
Draft:	5.3 m (17 ft 5 in)
Depth:	10.9 m (35 ft 9 in)
Propulsion:	COGAG, two shafts, four Rolls Royce Spey SM1C turbines
Speed:	30 kn (56 km/h; 35 mph)
Complement:	200
Sensors and processing systems:	ATECS (advanced technology command system) OYQ-11 ACDS FCS-3A AAW system OQQ-22 ASW system NOLQ-3D EW system OPS-20C surface search radar
Armament:	Guns 1 × 127 mm (5 in)/62 gun Missiles 8 × Type 90 SSM 1 × Mk 41 VLS (32cells) RIM-162 ESSM SAM RUM-139 VL-ASROC (DD 115) Type07 VL-ASROC (DD 116 to DD 118) CIWS 2 × 20 mm Phalanx Block1B CIWS Torpedoes 2 × HOS-303 triple 324 mm (12.8 in) torpedo tubes Anti-torpedo System
Aircraft carried:	1 × SH-60K helicopter