Hatsuyuki-class destroyer

	Isoyuki (DD-127)
Class overview
Name	Hatsuyuki class
Builders	Ishikawajima-Harima HI (3); Sumitomo Heavy Industries (3); Hitachi Zosen Corporation (2); Mitsubishi Heavy Industries (2); Mitsui Eng. & Shipbuilding (2);
Operators	Japan Maritime Self-Defense Force
Preceded by	Yamagumo class
Succeeded by	Asagiri class
Built	1979–1986
In commission	1980–2021
Completed	12
Retired	12
General characteristics
Type	General-purpose destroyer (DD)
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, variable-pitch propellers;
Speed	30 knots (35 mph; 56 km/h)
Complement	200
Sensors &; 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

The Hatsuyuki-class destroyer (はつゆき型護衛艦, Hatsuyuki-gata-goei-kan) is a class of destroyer, serving with the Japan Maritime Self-Defense Force (JMSDF). It was the first class of first generation of general-purpose destroyers of the JMSDF.

Class overview
Isoyuki (DD-127)
Name	Hatsuyuki class
Builders	Ishikawajima-Harima HI (3) Sumitomo Heavy Industries (3) Hitachi Zosen Corporation (2) Mitsubishi Heavy Industries (2) Mitsui Eng. & Shipbuilding (2)
Operators	Japan Maritime Self-Defense Force
Preceded by	Yamagumo class
Succeeded by	Asagiri class
Built	1979–1986
In commission	1980–2021
Completed	12
Retired	12
General characteristics
Type	General-purpose destroyer (DD)
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, variable-pitch propellers
Speed	30 knots (35 mph; 56 km/h)
Complement	200
Sensors & 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