Hatsuyuki-class destroyer

Isoyuki
Class overview
Name: Hatsuyuki class
Builders:
Operators:  Japan Maritime Self-Defense Force
Preceded by: Yamagumo class
Succeeded by: Asagiri class
Built: 1979–1986
In commission: 1982–
Completed: 12
Active: 5 (2)
Retired: 7
General characteristics
Type: Guided missile destroyer
Displacement:
  • 3,050 long tons (3,099 t) standard
  • 4,000 long tons (4,064 t) full
Length: 130 m (430 ft)
Beam: 13.6 m (44 ft 7 in)
Draft:
  • 4.2 m (13 ft 9 in)
  • 4.4 m (14 ft 5 in) (DD 129 to DD 132)
Propulsion:
Speed: 30 knots (35 mph; 56 km/h)
Complement: 200
Sensors and
processing systems:
  • OYQ-5 TDPS (w/ Link-14)
  • OPS-14 Air search radar
  • OPS-18 surface search radar
  • OQS-4 hull sonar
  • OQR-1 TACTASS
Electronic warfare
& decoys:
Armament:
Aircraft carried: 1 × SH-60J(K) anti-submarine helicopter

The Hatsuyuki-class destroyer is a class of destroyer, serving with the Japan Maritime Self-Defense Force (JMSDF). It was the third generation of general purpose destroyers, though like its predecessor, the Yamagumo class, the main task is anti-submarine warfare. The class was completed between 1982 and 1987. Due to its size it would be more appropriately classed as a frigate.

Design and development

This class is made a number of firsts among general purpose destroyers of the JMSDF.

It was the first class to use combined gas or gas (COGOG) propulsion system. The all-gas-turbine propulsion system is composed of two Kawasaki-Rolls-Royce Tyne RM1C gas turbines for cruising and two Kawasaki-Rolls-Royce Olympus TM3B gas turbines for high speed operation. The class introduced the concept of total ship systems engineering with an integrated combat system. The core of the combat system is the OYQ-5 Tactical Data Processing System (TDPS). The OYQ-5 TDPS is composed of one AN/UYK-20 computer and five OJ-194B workstations, and capable of receiving data automatically from other ships via Link-14 (STANAG 5514).

This is the first destroyer class in the JMSDF equipped with the Sea Sparrow Improved basic point defense missile system and Boeing Harpoon surface-to-surface missile system for AAW and ASuW respectively. The IBPDMS of this class uses FCS-2 fire-control systems of Japanese make and one Mk 29 octuple launcher at the afterdeck.

The class introduced the capability to operate an ASW helicopter. While the JMSDF already had the Haruna-class "helicopter destroyer", the Hatsuyuki class were the first air-capable general purpose destroyer class. Although it has a small aviation deck, through a beartrap system, the class can operate the Sikorsky HSS-2B Sea King anti-submarine helicopter safely in a wider range of weather conditions.

Shirayuki was retrofitted with the Phalanx CIWS system in early 1982, the modification was then applied to the rest of the class gradually - being completed by 1996. Matsuyuki was fitted with a towed sonar array in 1990, followed by Hatsuyuki in 1994, work ongoing to apply the fit to the rest of the class. From DD-129 onward, steel replaced aluminium for key elements of the superstructure, including the bridge, this increased the overall displacement.

Hatsuyuki and Shirayuki are named after World War II destroyers.

Shimayuki was re-classed as a training vessel on 18 March 1999.

As of 5 March 2013, it was being reported that the Japanese government were considering the transfer of four small destroyers (later confirmed to be of the Hatsuyuki class) from the MSDF to the Japan Coast Guard (JCG), in light of the extreme strains on the latter's resources due to current events. Of the four, one has already been decommissioned (in March 2013), with the other three to decommission over the course of FY2013. If the transfer goes ahead, the four vessels will likely be modified to JCG requirements (e.g. removal of the Harpoon launchers) and re-designated as PLHs.

Ships in the class

Pennant
no. 		Name Laid down Launched Commissioned Decommissioned Shipyard Home
port 		Note
DD-122 Hatsuyuki 14 March 1979 7 November 1980 23 March 1982 25 June 2010 Sumitomo Heavy Industries, Uraga Yokosuka
DD-123
TV-3517 		Shirayuki 3 December 1979 4 August 1981 8 February 1982 27 April 2016 Hitachi, Mauzuru Yokosuka Converted to training vessel (TV-3517) on 16 March 2011
DD-124 Mineyuki 7 May 1981 19 October 1982 26 January 1984 7 March 2013 Mitsubishi Heavy Industries Maizuru
DD-125 Sawayuki 22 April 1981 21 June 1982 15 February 1984 1 April 2013 IHI Corporation Yokosuka
DD-126 Hamayuki 4 February 1981 27 May 1982 18 November 1983 14 March 2012 Mitsui Engineering & Shipbuilding, Tamano Maizuru
DD-127 Isoyuki 20 April 1982 19 September 1983 23 January 1985 13 March 2014 IHI Corporation Sasebo
DD-128 Haruyuki 11 March 1982 6 September 1983 14 March 1985 13 March 2014 Sumitomo Heavy Industries, Uraga Sasebo
DD-129
TV-3519 		Yamayuki 25 February 1983 10 July 1984 3 December 1985 Hitachi, Mauzuru Kure Converted to training vessel (TV-3519) on 27 April 2016
DD-130 Matsuyuki 7 April 1983 25 October 1984 19 March 1986 IHI Corporation Kure
DD-131
TV-3518 		Setoyuki 26 January 1984 3 July 1985 11 December 1986 Mitsui Engineering & Shipbuilding, Tamano Kure Converted to training vessel (TV-3518) on 14 March 2012
DD-132 Asayuki 22 December 1983 16 October 1985 20 February 1987 Sumitomo Heavy Industries, Uraga Sasebo
DD-133
TV-3513 		Shimayuki 8 May 1984 29 January 1986 17 February 1987 Mitsubishi Heavy Industries Kure Converted to training vessel (TV-3513) on 18 March 1999

References

External links

Media related to Hatsuyuki class destroyers at Wikimedia Commons


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