Harushio-class submarine

	Wakashio, a Harushio-class submarine
Class overview
Name	Harushio (はるしお, Spring Tide) class
Builders	Mitsubishi Heavy Industries,; Kawasaki Shipbuilding Corporation;
Operators	Japan Maritime Self-Defense Force
Preceded by	Yūshio class
Succeeded by	Oyashio class
Subclasses	Harushio (SS-583 to 588),; Kai-Harushio (SS-589/TSS-3601);
Built	1987–1997
In commission	1990–2017
Completed	7
Retired	7
General characteristics
Type	Submarine
Displacement	SS-583 to SS-588; 2,450 tonnes (surfaced); 2,750 tonnes (submerged); SS-589 (TSS-3601); 2,560 tonnes (surfaced); 2,850 tonnes (submerged),; 2,900 tonnes (surfaced, April 2002),; 3,200 tonnes (submerged, April 2002);
Length	SS-583 to SS-588; 77 m (252 ft 7 in); SS-589 (TSS-3601); 78 m (255 ft 11 in); 87 m (285 ft 5 in) (April 2002);
Beam	10 m (32 ft 10 in)
Draught	7.7 m (25 ft 3 in)
Propulsion	1-shaft diesel-electric; 3,400 shp (2,500 kW) (surfaced); 7,200 shp (5,400 kW) (submerged);
Speed	12 kn (22 km/h; 14 mph) (surfaced); 20 kn (37 km/h; 23 mph) (submerged);
Complement	SS-583 to SS-588; 10 officers; 65 enlisted; SS-589 (TSS-3601); 71; 70 (April 2002);
Sensors &; processing systems	Hughes/Oki ZQQ 5B hull mounted sonar; ZQR 1 towed array; JRC ZPS 6 I-band search radar;
Armament	6 × 21 in (533 mm) torpedo tubes with 20 reloads for:; Type 89 torpedo; Type 80 ASW Torpedo; UGM-84 Harpoon;

The Harushio class is a diesel-electric submarine class operated by the Japanese Maritime Self-Defense Force (JMSDF). The design is an evolution from the Yūshio class being slightly larger and with better noise reduction. Asashio, has been modified to test air-independent propulsion (AIP), and the remaining vessels were decommissioned and replaced by the Oyashio-class.

Natsushio, Hayashio, Arashio and Asashio are all named after World War II destroyers.

Class overview
Wakashio, a Harushio-class submarine
Name	Harushio (はるしお, Spring Tide) class
Builders	Mitsubishi Heavy Industries, Kawasaki Shipbuilding Corporation
Operators	Japan Maritime Self-Defense Force
Preceded by	Yūshio class
Succeeded by	Oyashio class
Subclasses	Harushio (SS-583 to 588), Kai-Harushio (SS-589/TSS-3601)
Built	1987–1997
In commission	1990–2017
Completed	7
Retired	7
General characteristics
Type	Submarine
Displacement	SS-583 to SS-588 2,450 tonnes (surfaced) 2,750 tonnes (submerged) SS-589 (TSS-3601) 2,560 tonnes (surfaced) 2,850 tonnes (submerged), 2,900 tonnes (surfaced, April 2002), 3,200 tonnes (submerged, April 2002)
Length	SS-583 to SS-588 77 m (252 ft 7 in) SS-589 (TSS-3601) 78 m (255 ft 11 in) 87 m (285 ft 5 in) (April 2002)
Beam	10 m (32 ft 10 in)
Draught	7.7 m (25 ft 3 in)
Propulsion	1-shaft diesel-electric 3,400 shp (2,500 kW) (surfaced) 7,200 shp (5,400 kW) (submerged)
Speed	12 kn (22 km/h; 14 mph) (surfaced) 20 kn (37 km/h; 23 mph) (submerged)
Complement	SS-583 to SS-588 10 officers 65 enlisted SS-589 (TSS-3601) 71 70 (April 2002)
Sensors & processing systems	Hughes/Oki ZQQ 5B hull mounted sonar ZQR 1 towed array JRC ZPS 6 I-band search radar
Armament	6 × 21 in (533 mm) torpedo tubes with 20 reloads for: Type 89 torpedo Type 80 ASW Torpedo UGM-84 Harpoon