There are 3 images added between 3 December 2006 and 26 May 2007
Initial Operational Capability (IOC): 1998
Total Production: 11
Also Known As: Oyashio and SS 590
Origin: Japan
Corporations: Kawasaki Shipbuilding and Mitsubishi Heavy Industries
Parent System: Oyashi
Initial Operational Capability (IOC): 1998
Total Production: 11
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Description: The Japan Marine Self Defense Force (JMSDF) Oyashi, also known as Oyashio or Class 590, is an entirely new design of diesel-electric powered submarine with the diving control surfaces at the sail. Like their predecessors these boats are intended to perform both anti-submarine (ASW) and anti-surface warfare (ASuW) missions in blue waters. The Japan Maritime Self-Defense Force (JMSDF) commissioned 11 Oyashio-class submarines from 1998 through 2008. These ships are the quietest and largest submarines of the Japanese Navy ever.

The diesel-electric powered Oyahio-class boats can achieve a top speed of 20 knots while submerged and displacing 2,750t. The diesel engine develops up to 7,700-shp of power. The improved Oyashio ships feature Stirling AIP air independent propulsion system from Kockums. The lead ship, JS Soryu, equipped with such a propulsion system was launched December 2007 at Mitsubishi Heavy Industries in Kobe, Japan. Oyashio-class boats can be equipped with 20 Type 89 torpedoes as well as Harpoon (UGM-84D) anti-ship missiles and mines (40) all of them launched through six 533mm torpedo tubes.

Oyashi Specifications

Crew: 70
Number of Weapons: 20
Torpedo Tubes: 6
Beam: 10.3 meter (33.8 foot)
Draft: 7.40 meter (24.3 foot)
Length: 82 meter (269 foot)
Power: 7,700 shp (5.74 MW)
Top Speed Submerged: 20 knot (10.3 mps)
Displacement Submerged: 2,750 ton
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

Oyashi News

There are 2 news between
11 Jul 2005 and 14 Dec 2007
Friday, December 14, 2007First Improved Oyashio-class Submarine Fitted with Stirling AIP
Monday, July 11, 2005Japanese Submarines Swedish Air Independent Propulsion

Operators & Related Equipment

Jan 201411
Aug 201111

Grand Total 111
Defensive Weapons
Type 89x20
Offensive Weapons
UGM-84D Harpoon
Propulsion Systems
Stirling AIPx1

Oyashi Ship Listing

SerialNameStatusLaunch DateCommissionDecommission
SS590 Oyashio-1998-
SS591 Michishio-2000-
SS592 Uzushio-2000-
SS593 Makishio-2001-
SS594 Isoshio-2002-
SS595 Narushio-2003-
SS596 Kuroshio-2004-
SS597 Takashio-2005-
SS598 Yaeshio-2006-
SS599 Setoshio-2007-
SS600 Michishio-2008-

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