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Initial Operational Capability (IOC): 2009
Total Production: 10
Unitary Cost: USD$500 million
Also Known As: Soryuu and SS 501
Origin: Japan
Corporations: Kawasaki Shipbuilding and Mitsubishi Heavy Industries
Parent System: Soryu
Initial Operational Capability (IOC): 2009
Total Production: 10
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Description: The Japan Marine Self Defense Force (JMSDF) Soryuu, also known as Class 501, is an advanced class of conventionally-powered attack submarines fitted with the Stirling Air Independent Propulsion (AIP) system. The Stirling works in combination with four traditional diesel-electric engines. Thanks to AIP the Soryuu-class boats can operate without snorkel which makes them harder to detect by surface ships and maritime patrol aircraft. Besides, these ships feature an X rudder which minimizes the acoustic signature making the submarine harder to detect. The lead ship, SS 501 JS Soryuu, equipped with such a propulsion system was launched December 2007 at Mitsubishi Heavy Industries in Kobe, Japan. So far, the JMSDF has commissioned three ships as replacement for the Harushio-class submarines.

These boats are intended to perform both anti-submarine (ASW) and anti-surface warfare (ASuW) missions in blue waters. They are fitted with six 533mm torpedo tubes to release Type 89 torpedoes, sub-Harpoon missiles and mines. The 2,950-ton Soryuu-class submarines can reach a top speed of 20 knots thanks to its diesel-electric/AIP propulsion system providing 8,000-shp of power.

Soryu Specifications

Crew: 65
Beam: 9.10 meter (29.9 foot)
Draft: 8.50 meter (27.9 foot)
Length: 84 meter (276 foot)
Ship's Height: 10.3 meter
Power: 8,000 shp (5.97 MW)
Top Speed Submerged: 20 knot (10.3 mps)
Displacement Submerged: 2,950 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)

Soryu News

There is 1 news
on 30 Jan 2015
Friday, January 30, 2015Australia and India Considering Procurement of Japanese Soryu-Class Submarines

Operators & Related Equipment


Grand Total 101
Defensive Weapons
Type 89
Offensive Weapons
Propulsion Systems
Stirling AIP

Soryu Ship Listing

SerialNameStatusLaunch DateCommissionDecommission
501 Soryuu-2009-
502 Unryu-2010-
503 Hakuryu-2011-
504 Kenryu-2012-
505 Zuiryu-2013-
506 Black Dragon1 Nov 20132014-
507 -2015-
508 -2016-
509 -2017-
510 -2018-

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