JS Isoyuki

JS Isoyuki (DD-127) was a Hatsuyuki-class destroyer of the Japanese Maritime Self-Defense Force.

JS Isoyuki
History
Japan
Name	Isoyuki (いそゆき)
Ordered	1980
Builder	IHI, Tokyo
Laid down	20 April 1982
Launched	19 September 1983
Commissioned	23 January 1985
Decommissioned	13 March 2014
Stricken	November 2015
Homeport	Sasebo
Identification	Pennant number: DD-127
Fate	Scrapped
General characteristics
Class and type	Hatsuyuki-class destroyer
Displacement	2,950 tons standard, 4,000 tons hull load
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	2 × KHI-RR TM3B gas turbines, 45,000 shp (34 MW) 2 × KHI-RR RM1C gas turbines, 9,900 shp (7.4 MW) 2 shafts, cp props
Speed	30 knots (35 mph; 56 km/h)
Complement	200
Sensors and processing systems	OYQ-5 tactical data system FCS-2 fire-control system OPS-14 air search radar OPS-18 surface search radar OQS-4 hull sonar OQR-1 TASS (in some ships)
Electronic warfare & decoys	NOLR-6C intercept OLT-3 jammer Mark 36 SRBOC Towed torpedo decoys
Armament	1 × OTO Melara 76 mm gun 2 × 20 mm Phalanx CIWS 2 × Harpoon SSM quad canisters 1 × Sea Sparrow SAM octuple launcher 1 × ASROC octuple launcher 2 × triple 324 mm torpedo tubes
Aircraft carried	1 × HSS-2B or SH-60J helicopter
Aviation facilities	Hangar and helipad

Development and design

Main article: Hatsuyuki-class destroyer

Adopting Japan's first all-gas turbine engine (COGOG), equipped with well-balanced weapons such as helicopters, C4I systems, and various missiles, it is inferior to Western frigate at that time. It has been evaluated as a non-escort ship. Twelve ships were built as first-generation general-purpose escort vessels in the era of eight ships and eight aircraft, they supported the escort fleet for a long time, but now they are gradually retiring due to aging.

In addition, there are many changes to training ships, and up to three ships have been operated in the training fleet as Shimayuki-class training ships, but the decline has begun with the conversion of Hatakaze-class destroyers to training ships.

The core of the combat system is the OYQ-5 Tactical Data Processing System (TDPS), 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. The IBPDMS of this class uses FCS-2 fire-control systems of Japanese make and one octuple launcher at the afterdeck. And in the JMSDF, OTO Melara 76 mm compact gun and Boeing Harpoon surface-to-surface missile are adopted from the ship of FY1977 including this class. Also, ships built in FY1979 and beyond carried Phalanx CIWS and were retrofitted to previous ships.

Construction and career

She was laid down on 20 April 1982 and launched on 19 September 1983 at IHI Corporation in Tokyo. She commissioned on 23 January 1985.

In 1986, she participated in Exercise RIMPAC 1986.

In 1990, she participated in Exercise RIMPAC 1990.

On March 13, 2014, she was removed from the register due to the commissioning of JS Suzutsuki. The final affiliation was the 13th escort fleet of the escort fleet, and the homeport was Sasebo. After that, on July 23, the same year, it was circulated to the JMU Maizuru Works, remodeled the ship, and painted white, which seems to be for aiming and measurement.

In November 2015, she was sold for scrap and departed from Maizuru to be dismantled.

Gallery

• 
  JS Isoyuki underway on 10 October 1988.
• 
  JS Isoyuki at Sasebo on 30 April 2011.
• 
  JS Isoyuki at Sasebo on 30 April 2011.
• 
  JS Isoyuki at JMU Maizuru Shipyard on 27 July 2014.
• 
  JS Isoyuki at JMU Maizuru Shipyard on 27 July 2014.
• 
  JS Isoyuki docked on 4 July 2015.