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Naval Warfare


JS Soryu (SS-501)


Diesel-Electric Attack Submarine [ 2009 ]



The Soryu-class of diesel-electric submarines for the Japanese Navy entered service during 2009 and are led by JDS Soryu SS-501.



Authored By: Staff Writer | Last Edited: 08/08/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

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The Japanese underwater force has received renewed attention in light of growing tensions with China and their interest in the South China Sea. It therefore seems that the newer Soryu-class of diesel-electric attack submarines entered service with the Japan Maritime Self-Defense Force (JMSDF) and the right time. Twelve boats of the class are planned with eight having been completed and three under construction (2016). The class succeeds the eleven-strong Oyashio-class in service, these commissioned in the latter part of the 1990s and onward.

The Soryu-class can be seen as an extension of the Oyashio-class with the primary exception being the X-shaped tail planes used on the Soryu boats. The newer boats also carry more modern features to impact their performance including endurance underwater.

JS Soryu is the lead ship of the Soryu-class and displaces at 2,900 tonnes surfaced and 4,200 tonnes submerged. She features a length of 275.6 feet, a beam of 29.9 feet and a draught of 27.10 feet. Installed power is 2 x Kawasaki 12V 25/25 SB-type diesel-electric engines with 4 x Kawasaki Heavy Industry (Kockums) V4-275R Stirling engines driving 3,900 horsepower (surfaced) and 8,000 horsepower (submerged) to a single shaft. Surfaced speeds reach 13 knots while submerged speeds maximize at 20 knots, range being out to 6,100 nautical miles when cruising at 6.5 knots.

Internally the vessel is crewed by 65 personnel (including nine officers). She carries the ZPS-6F surface / low-level air search radar suite, a Hughes/Oki ZQQ-7 sonar fit with a bow array, a towed array and 4 x LF flank arrays. The ZLR-3-6 makes up the Electronic Warfare fit along with 2 x 3" underwater countermeasures tubes. Armament is 6 x 21" (533mm) torpedo tubes with some 30 total reloads. The tubes can fire both Type 89 torpedoes and the Harpoon Anti-Ship Missile (ASM) series. The vessel is also designed to lay naval mines when needed.

JS Soryu operates under the namesake of "Blue Dragon" and carries the Pennant Number of SS-501. She was laid down on March 31st, 2005 (under the project number of "S131") and launched on December 5th, 2007. Her formal commissioning arrived on March 30th, 2009 and she homeports from Kure, Japan.

JS Soryu follows the original IJN Soryu into service for Japan. The original warship (an aircraft carrier) was a player in World War 2 (1939-1945) and met her fate at the hands of the Allies during the Battle of Midway (June 1942).

The vessel design was offered to Australia as a replacement for its aging fleet of Collins-class submarines. However, the nation decided on a French design instead.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

Specifications



Japan
Operators National flag of modern Japan
2009
Commissioned
Japan
National Origin
Commissioned, Active
Project Status
65
Complement
Soryu-class
Hull Class
12
Number-in-Class
JS Soryu (SS-501); JS Unryu (SS-502); JS Hakuryu (SS-503); JS Kenryu (SS-504); JS Zuiryu (SS-505); JS Kokuryu (SS-506); JS Jinryu (SS-507); Sekiryu (SS-508); Unnamed Vessel (SS-509); Unnamed Vessel (SS-510); Unnamed Vessel (SS-511); Unnamed Vessel (SS-512)
Ships-in-Class


Submerged Attack
Traveling under the surface to search, track, and / or engage or reconnoiter areas.
Maritime Patrol
Active patroling of vital waterways and maritime areas; can also serve as local deterrence against airborne and seaborne threats.
Fleet Support
Serving in support (either firepower or material) of the main surface fleet in Blue Water environments.


275.6 feet
(84.00 meters)
Length
29.9 feet
(9.11 meters)
Beam
27.1 feet
(8.26 meters)
Draught
3,200
tons
Displacement
4,200
tons
Displacement (Submerged)


4 x Kawasaki Kockums V4-275R Stirling engines with 2 x Kawasaki 12 25/25 SB-type diesel engines developing up to 8,000 horsepower to 1 x shaft.
Propulsion
13.0 knots
(15.0 mph)
Surface Speed
20.0 knots
(23.0 mph)
Submerged Speed
6,135 nm
(7,060 miles | 11,362 km)
Range
1 knot = 1.15 mph; 1 nm = 1.15 mile; 1 nm = 1.85 km


6 x 533mm torpedo tubes in bow; Type 89 torpedoes or UGM-84 Harpoon anti-ship missiles; 30 reloads. Also provision for carrying and dispersal of naval mines.


None.


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