Asagiri class destroyer

JDS Yugiri anchored in the Solent
Class overview
Builders:	IHI Corporation Hitachi Zosen Corporation Sumitomo Heavy Industries Mitsui Engineering & Shipbuilding Mitsubishi Heavy Industries
Operators:	JMSDF
Preceded by:	Hatsuyuki-class destroyer
Succeeded by:	Murasame-class destroyer
Built:	1986–1989
In commission:	1986–
Completed:	8
General characteristics
Displacement:	3,500 tons standard, 4,900 tons hull load
Length:	137 m (449 ft 6 in)
Beam:	14.6 m (47 ft 11 in)
Draft:	4.5 m (14 ft 9 in)
Depth:	8.8 m (28 ft 10 in)
Propulsion:	4 gas turbines 54,000 shaft horsepower
Speed:	30 knots (56 km/h)
Range:	8,030 nmi (14,870 km) at 14 kn (26 km/h)
Complement:	220
Sensors and processing systems:	OYQ-6/7 CDS (w/ Link-11) OPS-14/24 Air search radar OPS-28 surface search radar OQS-4A hull sonar OQR-1 TACTASS
Electronic warfare and decoys:	NOLR-8 intercept OLT-3 jammer Mark 36 SRBOC
Armament:	1 × Otobreda 76 mm gun 2 × 20 mm Phalanx CIWS 2 × quad Harpoon SSM launchers 1 × Mk.29 Sea Sparrow SAM octuple launcher 1 × Mk.16 ASROC anti-submarine rocket octuple launcher 2 × HOS-302A triple 324 mm (12.8 in) torpedo tubes
Aircraft carried:	1 × SH-60J(K) anti-submarine helicopter

The Asagiri-class destroyer was built in the mid-1980s and late 1980s and is in service with the Japanese Maritime Self Defense Force.

This class of general purpose destroyer is almost extended version of its predecessor Hatsuyuki-class destroyers, and similarly, it mainly tasked with ASW and ASUW. There are many points enhanced as followes:

The COGAG propulsion system.

Compared with the COGOG propulsion system of the Hatsuyuki-class, this class has the COGAG propulsion system with enhanced capacity. The COGAG propulsion system is composed of four Kawasaki-Rolls-Royce Spey SM1A gas turbines.

Advanced radar systems.

This class is equipped with the new surface search radar, OPS-28. The OPS-28 is analogous to the American Target Acquisition System Mk.23 with the Track while scan capability. And the latter batch of this class introduced the OPS-24 air search 3D radar. The OPS-24 is the first shipboard active electronically scanned array radar in the world.

The full-configuration destroyer CDS.

This class is equipped with the OYQ-6/7 combat direction system (CDS). The OYQ-6 has two AN/USQ-20 computers, and they were replaced by one AN/UYK-7 computer in the OYQ-7 on the latter batch. The OYQ-6/7 can exchange tactical data via Link-11 whereas the OYQ-5 tactical data processing system on the Hatsuyuki-class does not support. And later, all ships of this class back-fitted with the terminal for the MOF system, the key operational C4I system of the JMSDF which uses the Superbird SHF-SATCOM.

Enlarged aircraft facility.

The hangar is enlarged in order to accommodate two helicopters, but in the operational configuration, there is only one.

Asagiri, Yugiri, and Amagiri were named after World War II destroyers. Amagiri's World War II namesake rammed and sank PT-109.

The Yamagiri and Asagiri have been converted into training vessels.

Ships in the class

Pennant no.	Name	Laid down	Launched	Commissioned	Builder	Home port	Note
DD-151 TV-3516	1988	IHI Corporation, Tokyo	Kure	Converted to training vessel (TV-3516) on 16 February 2005
DD-152 TV-3515	1989	Mitsui, Tamano	Kure	Converted to training vessel (TV-3515) on 18 March 2004, re-converted to DD-152 on March 2011
DD-153	1989	Sumitomo Heavy Industries Uraga Shipyard	Ominato
DD-154	1989	IHI Corporation	Maizuru
DD-155	1990	Hitachi, Maizuru	Ominato
DD-156	1990	Hitachi, Maizuru	Ominato
DD-157	1990	Mitsubishi Heavy Industries Nagasaki Shipyard	Sasebo
DD-158	1991	IHI Corporation	Kure

References

• Heihachiro Fujiki (August 2003). "Development of multi-purpose DDs for "8-8 escort flotilla" (in Japanese language). Ships of the World (Kaijinn-sha) (614): p94-99. 

External links

• GlobalSecurity.org; JMSDF DD Asagiri Class

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  JDS Asagiri (DD-151)

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  JDS Yūgiri (DD-153)

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  JDS Amagiri (DD-154)

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  JDS Sawagiri (DD-157)

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  JDS Asagiri (TV-3516)

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  JDS Umigiri (DD-158)

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  The hangar deck of JDS Umigiri (DD-158)

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  JDS Umigiri (DD-158)