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Posted on June 17, 2024 By LabLynx Journal articles

Oyashio at Pearl Harbor in 2006
Class overview
NameOyashio (おやしお, Oyashio Current)
Builders
Operators Japan Maritime Self-Defense Force
Preceded byHarushio class
Succeeded bySōryū class
Built1994–2008
In commission1998–present
Planned11
Completed11
Active9 (2 converted to training ships)
General characteristics
TypeAttack submarine
Displacement
Length81.7 m (268 ft 1 in)
Beam8.9 m (29 ft 2 in)
Draught7.4 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 (22 km/h; 14 mph) (surfaced)
  • 20 knots (37 km/h; 23 mph) (submerged)
Complement70 (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

The Oyashio class is a series of Japanese diesel-electric attack submarines operated by the JMSDF. The submarines entered service in the late 1990s. The submarines are larger than the earlier Harushio class, 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 their names with World War II destroyers. Takashio shares a name with a ship from the third set of Yūgumo-class destroyers, of which none were built.

The first two boats, Oyashio and Michishio, have since been converted to training platforms.

On February 1, 2018, the Ministry of Defence's Maritime Staff Office revealed that seven of the service's 82-metre (269 ft 0 in) Oyashio-class submarines, which have a surface displacement of 2,800 tonnes – have already completed service-life extension work to date. The seven boats received extensive refits during their second and third maintenance cycles, which have been planned to bring the vessels to "almost the same level of that of the latest model Sōryū-class submarine, while extending their service lives.[1]

Project no. Building no. Pennant no. Name Japanese Laid down Launched Commissioned Shipyard Note
S130 8105 SS-590/
TSS-3608		 Oyashio おやしお 26 January 1994 15 October 1996 16 March 1998 Kawasaki Shipbuilding Corporation, Kobe[2] Converted to training submarine (TSS-3608) on 6 March 2015
8106 SS-591 Michishio みちしお 16 February 1995 18 September 1997 10 March 1999 Mitsubishi Heavy Industries, Kobe Converted to training submarine (TSS-3609) on 27 February 2017
8107 SS-592 Uzushio うずしお 6 March 1996 26 November 1998 9 March 2000 Kawasaki Shipbuilding Corporation, Kobe
8108 SS-593 Makishio まきしお 26 March 1997 22 September 1999 29 March 2001 Mitsubishi Heavy Industries, Kobe
8109 SS-594 Isoshio いそしお 9 March 1998 27 November 2000 14 March 2002 Kawasaki Shipbuilding Corporation, Kobe
8110 SS-595 Narushio なるしお 2 April 1999 4 October 2001 3 March 2003 Mitsubishi Heavy Industries, Kobe
8111 SS-596 Kuroshio くろしお 27 March 2000 23 October 2002 8 March 2004 Kawasaki Shipbuilding Corporation, Kobe
8112 SS-597 Takashio たかしお 30 January 2001 1 October 2003 9 March 2005 Mitsubishi Heavy Industries, Kobe
8113 SS-598 Yaeshio やえしお 15 January 2002 4 November 2004 9 March 2006 Kawasaki Shipbuilding Corporation, Kobe
8114 SS-599 Setoshio せとしお 23 January 2003 5 October 2005 28 February 2007 Mitsubishi Heavy Industries, Kobe
8115 SS-600 Mochishio もちしお 23 February 2004 6 November 2006 6 March 2008 Kawasaki Shipbuilding Corporation, Kobe
  • JS Mochisio (SS 600) departs Joint Base Pearl Harbor–Hickam to support Rim of the Pacific (RIMPAC) 2010 exercises.
    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.
  • Oyashio-class submarine.
    Oyashio-class submarine.
  • JS Kuroshio (SS 596) at the Maizuru Naval Base.
    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 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 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 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.
    JS Mochishio (SS 600) arrives at Joint Base Pearl Harbor–Hickam to support Rim of the Pacific (RIMPAC) exercises.
  • Oyashio-class submarine profile
    Oyashio-class submarine profile

See also

References

  1. ^ "Japan outlines submarine modernisation efforts". February 1, 2018. Archived from the original on March 2, 2018. Retrieved March 1, 2018.
  2. ^ Saunders, Stephen (2004). Jane's Fighting Ships 2004-2005. Jane's Information Group. p. 384. ISBN 0-7106-2623-1.
source: https://en.wikipedia.org/wiki/Oyashio-class_submarine

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