Oyashio-class submarine
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, 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 third set of s, 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 m Oyashio-class submarines, which have a surface displacement of 2,800 tonnes – have already completed service-life extension work to date. The seven boats have 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, while extending their service lives.
| Project no. | Building no. | Pennant no. | Name | Laid down | Launched | Commissioned | Shipyard | Note |
| S130 | 8105 | SS-590/ TSS-3608 | Japanese submarine Oyashio | 26 January 1994 | 15 October 1996 | 16 March 1998 | Kawasaki Shipbuilding Corporation, Kobe | Converted to training submarine on 6 March 2015 |
| S130 | 8106 | SS-591 | Japanese submarine Michishio | 16 February 1995 | 18 September 1997 | 10 March 1999 | Mitsubishi Heavy Industries, Kobe | Converted to training submarine on 27 February 2017 |
| S130 | 8107 | SS-592 | Japanese submarine Uzushio | 6 March 1996 | 26 November 1998 | 9 March 2000 | Kawasaki Shipbuilding Corporation, Kobe | |
| S130 | 8108 | SS-593 | Japanese submarine Makishio | 26 March 1997 | 22 September 1999 | 29 March 2001 | Mitsubishi Heavy Industries, Kobe | |
| S130 | 8109 | SS-594 | Japanese submarine Isoshio | 9 March 1998 | 27 November 2000 | 14 March 2002 | Kawasaki Shipbuilding Corporation, Kobe | |
| S130 | 8110 | SS-595 | Japanese submarine Narushio | 2 April 1999 | 4 October 2001 | 3 March 2003 | Mitsubishi Heavy Industries, Kobe | |
| S130 | 8111 | SS-596 | Japanese submarine Kuroshio | 27 March 2000 | 23 October 2002 | 8 March 2004 | Kawasaki Shipbuilding Corporation, Kobe | |
| S130 | 8112 | SS-597 | Japanese submarine Takashio | 30 January 2001 | 1 October 2003 | 9 March 2005 | Mitsubishi Heavy Industries, Kobe | |
| S130 | 8113 | SS-598 | Japanese submarine Yaeshio | 15 January 2002 | 4 November 2004 | 9 March 2006 | Kawasaki Shipbuilding Corporation, Kobe | |
| S130 | 8114 | SS-599 | Japanese submarine Setoshio | 23 January 2003 | 5 October 2005 | 28 February 2007 | Mitsubishi Heavy Industries, Kobe | |
| S130 | 8115 | SS-600 | Japanese submarine Mochishio | 23 February 2004 | 6 November 2006 | 6 March 2008 | Kawasaki Shipbuilding Corporation, Kobe |