Akizuki-class destroyer (2010)

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For the WWII class of the same name, see Akizuki-class destroyer (1942). For the earlier destroyer class of the JMSDF, see Akizuki-class destroyer (1959).
JS Akizuki in the Sagami Bay during the SDF Fleet Review 2012, -14 Oct. 2012 a.jpg
JDS Akizuki (DD-115)
Class overview
Preceded by: Takanami-class destroyer
Cost: DD115: JPY84.4 billion[1]
$893 million (constant 2009 USD)
Planned: 4
Completed: 4
Active: 4
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

Missiles

CIWS

Torpedoes

Anti-torpedo System
Aircraft carried: 1 × SH-60K helicopter

The Akizuki-class destroyer is a destroyer class of the JMSDF - four ships are planned. This class is designed to escort the JMSDF's 4 larger Kongō-class destroyers which are tasked with protecting Japan against a North Korean ballistic missile attack. This class used to be designated "19DD" - referring to a date on the Japanese calendar, specifically the 19th fiscal year of the Heisei period (2007).

Design[edit]

The Akizuki class is not really a new design but a modernized and slightly heavier variant of the Takanami class destroyer, whose purpose is to shield the Kongō class from air, surface and subsurface threats. There are many small improvements like, for example, cleaner lines to reduce the radar signature and decoys for torpedoes; but the principal changes can be summed up as more powerful engines, sensors, sonar and the indigenous ATECS battle management system that has been called the "Japanese AEGIS". The main gas turbine engines are standardized on a higher-powered version of the Rolls-Royce Spey SM1C, in contrast to the combination of Rolls-Royce SM1C and General Electric LM2500 turbines used in the Takanami class.[2]

Features[edit]

JDS Akizuki (DD-115) at Sagami bay, 2012

Main features of the class include enhanced C4ISR and Anti-Aircraft Warfare (AAW) capability, with an OYQ-11 advanced Combat Direction Sub-system (CDS) and FCS-3A AAW weapon sub-system.[2]

OYQ-11
This is the first CDS adopting a fully distributed computing architecture to be implemented in general-purpose destroyers of the JMSDF. AN/UYQ-70 workstations form the basic computing platform, with Link 16 datalinks. In addition to the CDS, this class is equipped with SATCOM terminals linked to Superbird satellites, part of the Maritime Operation Force (MOF) system. The MOF system is the operational C4I system used in the fleet of the JMSDF, based on the ILOG architecture and interoperable with other JSDF forces. There are also USC-42 DAMA terminals for GCCS-M, the American counterpart of the MOF system.[3]
FCS-3A
This is a domestically developed AAW combat system. It consists of two main components, one is an OPS-50 dual-band and multimode active electronically scanned array radar, and the other is the fire-control system. The FCS-3A is the derivative of the FCS-3 of the Hyūga-class helicopter destroyer, but with additional Local Area Defense (LAD) capability. An ESSM SAM VLS is integrated with the FCS-3A.[4]

Anti-submarine and Electronic Warfare (EW) capabilities of the Akizuki class have been enhanced, with a new OQQ-22 integrated sonar suite sub-system (hull-sonar and OQR-3 towed array; - a Japanese equivalent of the American AN/SQQ-89), and the NOLQ-3D digitalized EW suite sub-system. These sub-systems communicate across a NOYQ-1B wide area network. In totality these systems are comparable to those of the Zumwalt-class destroyer.[3]

Gallery[edit]

Ships in the class[edit]

Building no. Pennant no. Name/Namesake Laid down Launched Commissioned Shipyard
2244 DD-115 Akizuki (Autumn Moon) 17 July 2009 13 October 2010 14 March 2012 MHI, Nagasaki
2245 DD-116 Teruzuki (Bright Moon) 9 July 2010 15 September 2011 7 March 2013 MHI, Nagasaki
2246 DD-117 Suzutsuki (Clear Moon) 18 May 2011 17 October 2012 12 March 2014 MHI, Nagasaki
2247 DD-118 Fuyuzuki (Winter Moon) 14 June 2011 22 August 2012 13 March 2014 Mitsui, Tamano

References[edit]

  1. ^ http://www.globalsecurity.org/military/world/japan/19dd.htm
  2. ^ a b SOW editorial office (November 2010). "Technical characteristics of 19DD". Ships of the World (Kaijinn-sha) (732): p84–99. 
  3. ^ a b Makoto Yamazaki (October 2011). "Combat systems of modern Japanese destroyers". Ships of the World (Kaijin-sha) (748): 98–107. 
  4. ^ Keiichi Nogi (March 2010). "1. Missiles (Shipboard weapons of JMSDF 1952-2010)". Ships of the World (Kaijin-sha) (721): 82–87. 

External links[edit]