Asagiri-class destroyer

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Template:Short description

Template:Infobox ship imageTemplate:Infobox ship class overviewTemplate:Infobox ship characteristics

The Script error: No such module "Nihongo". is a class of destroyer, serving with the Japan Maritime Self-Defense Force (JMSDF). It was the second class of first-generation general-purpose destroyers of the JMSDF.Template:Sfn

Background

The JMSDF started construction of a Template:Sclass since FY1977. This was the first class of Script error: No such module "Nihongo". under the eight ships / eight helicopters concept.Template:Sfn In this concept, each flotilla would be composed of one helicopter destroyer (DDH), five general-purpose destroyers (DD), and two guided-missile destroyers (DDG).Template:Sfn

However, due to constraints such as budget, the design of the Hatsuyuki class was compelled to compromise in terms of C4I function, resistance, and durability. Thus, destroyers to be built after FY1983, Asagiri class were changed to an evolved design with expanded hull and enhanced equipment.Template:Sfn

Design

The hull is an enlarged type of Hatsuyuki class, and the hull form is of the shelter deck style. Also, as the latter batch of the Hatsuyuki class, the upper structure is made of steel, but since it was incorporated into the design from the beginning, the adverse effect on the movement performance was solved.Template:Sfn

The engine room was greatly renovated. Instead of the COGOG propulsion system of the Hatsuyuki class, this class has the COGAG propulsion system with four Kawasaki-Rolls-Royce Spey SM1A gas turbines. With these powerful engines, it was possible to run at Template:Convert by driving only two of the four engines, and the benefits of tracking a submarine were especially great. An alternating arrangement was introduced to improve resistance and durability, as in the steam turbine driven destroyers.Template:Sfn

Equipment

The earlier batch was equipped with the OYQ-6 combat direction system (CDS). This system employed one AN/UYK-20 computer as the same as the OYQ-5 tactical data processing system of the Hatsuyuki class, but with expanded memories, it can exchange tactical data via Link-11, which the OYQ-5 does not support. Later, all OYQ-6 systems were upgraded to the OYQ-7, integrated with the OYQ-101 ASW Direction System.Template:Sfn All ships of this class were later retrofitted with the terminal for the MOF system, the key operational C4I system of the JMSDF which uses the Superbird SHF-SATCOM.Template:Sfn

The surface-search radars were replaced by OPS-28. The air-search radars were updated to OPS-14C in the earlier batch, and in the latter batch, OPS-24 3D radars were introduced. This was a maritime version of the land-based J/FPS-3 early-warning radar, and first shipboard active electronically scanned array radar in the world. In the latter batch, electronic warfare support measures systems were also replaced by NOLR-8, completely newly developed with emphasis on anti-ship missile defense.Template:Sfn

Its weapon system is basically the same as the Hatsuyuki class except for the minor change on its FCS. However, a new SH-60J was installed as a shipboard helicopter, so a large capacity data link device was installed. The hangar is enlarged in order to accommodate two helicopters, but only one helicopter is used operationally.Template:Sfn

Ships in the class

Yamagiri and Asagiri were converted into training vessels for a few years.

Pennant no. Name Laid down Launched Commissioned Builder Home port Note
DD-151
TV-3516		 Template:JS 13 February 1985 19 September 1986 17 March 1988 IHI Corporation, Tokyo Maizuru Converted to training vessel (TV-3516) on 16 February 2005
re-converted to DD-151 on 14 March 2012
DD-152
TV-3515		 Template:JS 3 March 1986 10 October 1987 25 January 1989 Mitsui, Tamano Yokosuka　 Converted to training vessel (TV-3515) on 18 March 2004
re-converted to DD-152 in March 2011
DD-153 Template:JS 25 February 1986 21 September 1987 28 February 1989 Sumitomo Heavy Industries, Uraga Yokosuka 4 June 1996 - accidentally shot down USN A-6E Intruder during live-fire CIWS exercise (part of RIMPAC '96); two aviators ejected safely & rescued by Yūgiri; malfunction in Phalanx CIWS initially implicated as cause of incident but human error later blamed[1][2]
DD-154 Template:JS 3 March 1986 9 September 1987[3] 28 February 1989[3] IHI Corporation, Tokyo Yokosuka
DD-155 Template:JS 20 January 1987 4 June 1988 31 January 1990 Hitachi, Maizuru Ominato　
DD-156 Template:JS 9 March 1987 12 September 1988 14 February 1990 Hitachi Zosen Corporation Maizuru　
DD-157 Template:JS 14 January 1987 25 September 1988 6 March 1990 Mitsubishi Heavy Industries Nagasaki Sasebo
DD-158 Template:JS 31 October 1988 9 November 1989 12 March 1991 IHI Corporation, Tokyo Kure

References

Template:Reflist

Bibliography

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External links

Template:Asagiri class destroyers Template:Combatant ship classes of the Japan Maritime Self-Defense Force

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