Oyashio-class submarine

Last updated
Japanese Submarine Oyashio SS590.JPEG
Oyashio at Pearl Harbor in 2006
Class overview
NameOyashio (おやしお, Oyashio Current)
Builders
OperatorsNaval Ensign of Japan.svg  Japan Maritime Self-Defense Force
Preceded by Harushio class
Succeeded by Sōryū class
Built1994–2008
In commission1998–present
Planned11
Completed11
Active9 (2 converted to training ships)
General characteristics
Type Attack 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.

Contents

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.NameJapaneseLaid downLaunchedCommissionedShipyardNote
S1308105SS-590/
TSS-3608		 Oyashio おやしお26 January 199415 October 199616 March 1998 Kawasaki Shipbuilding Corporation, Kobe [2] Converted to training submarine (TSS-3608) on 6 March 2015
8106SS-591 Michishio みちしお16 February 199518 September 199710 March 1999 Mitsubishi Heavy Industries, KobeConverted to training submarine (TSS-3609) on 27 February 2017
8107SS-592 Uzushio うずしお6 March 199626 November 19989 March 2000Kawasaki Shipbuilding Corporation, Kobe
8108SS-593 Makishio まきしお26 March 199722 September 199929 March 2001Mitsubishi Heavy Industries, Kobe
8109SS-594 Isoshio いそしお9 March 199827 November 200014 March 2002Kawasaki Shipbuilding Corporation, Kobe
8110SS-595 Narushio なるしお2 April 19994 October 20013 March 2003Mitsubishi Heavy Industries, Kobe
8111SS-596 Kuroshio くろしお27 March 200023 October 20028 March 2004Kawasaki Shipbuilding Corporation, Kobe
8112SS-597 Takashio たかしお30 January 20011 October 20039 March 2005Mitsubishi Heavy Industries, Kobe
8113SS-598 Yaeshio やえしお15 January 20024 November 20049 March 2006Kawasaki Shipbuilding Corporation, Kobe
8114SS-599 Setoshio せとしお23 January 20035 October 200528 February 2007Mitsubishi Heavy Industries, Kobe
8115SS-600 Mochishio もちしお23 February 20046 November 20066 March 2008Kawasaki Shipbuilding Corporation, Kobe

See also

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JS <i>Michishio</i> Oyashio-class submarines

JS Michishio (SS-591) is the second boat of the Oyashio-class submarines. She was commissioned on 10 March 1999.

JS <i>Uzushio</i> Oyashio-class submarines

JS Uzushio (SS-592) is the third boat of the Oyashio-class submarines. She was commissioned on 9 March 2000.

JS <i>Makishio</i> Oyashio-class submarines

JS Makishio (SS-593) is the fourth boat of the Oyashio-class submarines. She was commissioned on 29 March 2001.

JS <i>Narushio</i> Oyashio-class submarines

JS Narushio (SS-595) is the sixth boat of the Oyashio-class submarines. She was commissioned on 3 March 2003.

JS <i>Kuroshio</i> (SS-596) Oyashio-class submarines

JS Kuroshio (SS-596) is the seventh boat of the Oyashio-class submarines. She was commissioned on 8 March 2004.

JS <i>Mochishio</i> Oyashio-class submarines

JS Mochisio (SS-600) is the eleventh boat of the Oyashio-class submarines. She was commissioned on 6 March 2008.

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.


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