Izumo-class helicopter destroyer

The Izumo-class helicopter destroyer or 22DDH is a type of new helicopter carrier class being constructed for the Japan Maritime Self-Defense Force (JMSDF). The ships of this class will be the largest surface combatants of the JMSDF, taking over the mantle currently held by the Hyuga-class helicopter destroyers. The lead ship was officially unveiled at Yokohama on 6 August 2013.

Izumo-class helicopter destroyer
Class Ship
Type Aircraft Carrier
Manufacturer IHI Corporation
Production Period 2012 - 2015
Origin Japan
Country Name Origin Year
Japan 2015
Country Name Operational Year Retirement Year
Japan 2015 View
ManufacturerName Production From Production To Quantity
IHI Corporation 2012 2015 2 View

The Japanese Ministry of Defense (MOD) first announced plans for the class on November 23, 2009. This ship's primary mission is anti-submarine warfare but peacekeeping and disaster relief operations are also being considered.

This ship could possibly carry up to 28 aircraft. However only 7 ASW helicopters and 2 SAR helicopters are planned for the initial aircraft complement. For other operations, 400 troops and 50 3.5t trucks (or equivalent equipment) can also be carried. The flight deck has 5 helicopter landing spots that allow simultaneous landings or take-offs. The ship is equipped with 2 Phalanx CIWS and 2 SeaRAM for its defense. The destroyers of this class were initially intended to replace the two ships of the Shirane class, which were originally scheduled to begin decommissioning in FY2014.

In 2010, Forecast International reported that some design features were intended to support fixed wing aircraft such as the Bell-Boeing V-22 Osprey and Lockheed Martin F-35 Lightning II; although neither the MOD nor the JMSDF have mentioned the possibility of introducing fixed-wing aircraft. The ship has neither a "ski-jump" nor a catapult, typical features for launching fixed-wing aircraft. If the Izumo-class were to operate fixed-wing aircraft, they would be limited to those capable of STOVL (short take-off, vertical landing) operations; Japan has acquired the F-35A for use by the JASDF, but has not indicated whether it would purchase the STOVL F-35B version.

The construction of the first ship of the class began in 2011 at an IHI Marine United shipyard in Yokohama, with funding totalling 113.9 billion yen ($1.5 billion) being set aside in the fiscal 2010 budget for this purpose. Commissioning of the first of class is currently scheduled for 2015.

Ships in Class

Pennant no. Name Laid down Launched Commissioned Homeport
DDH-183 Izumo 27 January 2012 6 August 2013 (March 2015) tbd
DDH-184 tbd 7 October 2013 (August 2015) (March 2017) tbd

Name: Izumo-class helicopter destroyer
Builders: IHI Marine United
Preceded by: Hyuga-class helicopter destroyer
Cost: 113.9 billion yen ($1.2 billion for construction of first unit to date)
Building: 1
Planned: 2
Completed: 1 (launched)
Active: 0
General characteristics
Type: ASW carrier
Displacement: 19,500 tonnes empty
27,000 tons full load
Length: 248.0 m (813.6 ft)
Beam: 38.0 m
Draft: 7.5 m (24.6 ft)
Depth: 33.5 m (109.9 ft)
Installed power: 112,000 hp (84,000 kW)
Propulsion: COGAG, two shafts
4 × GE/IHI LM2500IEC gas turbine
Speed: 30 knots (56 km/h)
Complement: 970 including crew and troops
Sensors and
processing systems:
OYQ-12 combat direction system
FCS-3 fire control system
OPS-50 AESA radar
OPS-28 surface-search radar
OQQ-23 bow sonar
Electronic warfare
& decoys:
NOLQ-3D-1 EW suite
Mark 36 SRBOC
Anti-torpedo mobile decoy (MOD)
Floating acoustic jammer (FAJ)
Armament: 2 × Phalanx CIWS
Aircraft carried: 7 ASW helicopters and 2 SAR helicopters
28 aircraft maximum

End notes