Oyashio-class submarine

The SS590 Oyashio
Class overview
Name	Oyashio (おやしお, Cold Current)
Builders	Kawasaki Shipbuilding Corporation, Mitsubishi Heavy Industries
Operators	Japan
Preceded by	Harushio-class submarine
Succeeded by	Sōryū-class submarine
Built	1994–2008
In commission	1998–
Planned	11
Completed	11
Active	11
General characteristics
Type	Submarine
Displacement	2,750 tonnes (surfaced) 4,000 tonnes (submerged)
Length	81.7 m (268 ft 1 in)
Beam	8.9 m (29 ft 2 in)
Draught	7.4 m (24 ft 3 in)
Propulsion	Diesel-electric 2 Kawasaki 12V25S diesel engines 2 Kawasaki alternators 2 Toshiba motors 3,400 hp (2,500 kW) surfaced 7,750 hp (5,780 kW) submerged
Speed	12 knots (surfaced) 20 knots (submerged)
Complement	70 (10 officers)
Sensors and processing systems	Sonar: Hughes/Oki ZQQ-6 hull-mounted sonar, flank arrays, 1 towed array. Radar: JRC ZPS 6 I-band search radar.
Armament	6 × HU-605 21 in (533 mm) torpedo tubes with 20 reloads for: 1.) Type 89 torpedoes 2.) UGM-84 Harpoon

The Oyashio is a class of Japanese diesel-electric submarine operated by the JMSDF. The submarines entered service in the late 1990s. The submarines are larger than the earlier Harushio class submarines, to provide space for a flank sonar array.

Boats

There are a total of 11 boats in the class - the last boat was commissioned in 2008. Oyashio, Michishio, and Kuroshio share names with WWII destroyers Takashio share name with a third set of Yugumo class destroyers, of which were never built.

Project no.	Building no.	Pennant no.	Name	Laid down	Launched	Commissioned	Shipyard
S130	8105	SS-590	Oyashio (おやしお)	26 January 1994	15 October 1996	16 March 1998	Kawasaki, Kobe
	8106	SS-591	Michishio (みちしお)	16 February 1995	18 September 1997	10 March 1999	Mitsubishi, Kobe
	8107	SS-592	Uzushio (うずしお)	6 March 1996	26 November 1998	9 March 2000	Kawasaki, Kobe
	8108	SS-593	Makishio (まきしお)	26 March 1997	22 September 1999	29 March 2001	Mitsubishi, Kobe
	8109	SS-594	Isoshio (いそしお)	9 March 1998	27 November 2000	14 March 2002	Kawasaki, Kobe
	8110	SS-595	Narushio (なるしお)	2 April 1999	4 October 2001	3 March 2003	Mitsubishi, Kobe
	8111	SS-596	Kuroshio (くろしお)	27 March 2000	23 October 2002	8 March 2004	Kawasaki, Kobe
	8112	SS-597	Takashio (たかしお)	30 January 2001	1 October 2003	9 March 2005	Mitsubishi, Kobe
	8113	SS-598	Yaeshio (やえしお)	15 January 2002	4 November 2004	9 March 2006	Kawasaki, Kobe
	8114	SS-599	Setoshio (せとしお)	23 January 2003	5 October 2005	28 February 2007	Mitsubishi, Kobe
	8115	SS-600	Mochishio (もちしお)	23 February 2004	6 November 2006	6 March 2008	Kawasaki, Kobe

Pictures

• 
  JS Mochisio (SS 600) departs Joint Base Pearl Harbor-Hickam to support Rim of the Pacific (RIMPAC) 2010 exercises.
• 
  Oyashio class submarine.
• 
  Oyashio class submarine.
• 
  JS Kuroshio (SS 596) at the Maizuru Naval Base.
• 
  JS Narushio (SS 595) pulls into Pearl Harbor for a scheduled port call before starting Rim of the Pacific (RIMPAC) 2008.
• 
  JS Yaeshio (SS 598) arrives at Naval Station Pearl Harbor for an annual training exercise.
• 
  JS Uzushio (SS 592) arrives at Joint Base Pearl Harbor-Hickam to begin their annual training exercise.
• 
  JS Mochishio (SS 600) arrives at Joint Base Pearl Harbor-Hickam to support Rim of the Pacific (RIMPAC) exercises.

External links

• Oyashio class entry at GlobalSecurity