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Home» News»JMSDF Commissioned its 1st Li-Ion Battery Submarine SS-511 JS Ōryū おうりゅう
IMDEX Asia 2023

JMSDF Commissioned its 1st Li-Ion Battery Submarine SS-511 JS Ōryū おうりゅう

The Japan Maritime Self-Defense Force (JMSDF) commissioned its 11th Soryu-class diesel-electric attack submarine (SSK) in Kobe in Hyogo Prefecture on March 5, 2020. JS Ōryū (SS-511) joins the JMSDF’s Submarine Flotilla 1, based in Kure. It is the first-in-class boat to feature lithium-ion batteries.

Xavier Vavasseur 05 Mar 2020

JS Oryu is the 11th Soryu-class submarine delivered to the JMSDF (the 6th built by Mitsubishi Heavy Industries, the other 5 ones having been built by Kawasaki Heavy Industries). Oryu (おうりゅう) means Phoenix Dragon. SS-511’s keel was laid in November 2015, the SSK was launched in October 2018.

祝🎌潜水艦おうりゅう(SS-511)就役

ドック入りしているおやしお型(回答旗+UWを掲揚)にも見送られながら、無事に三菱重工 神戸造船所を出港しました。
おうりゅうの武運長久を祈ります!#おうりゅう pic.twitter.com/PiEzbfok2A

— かこてつ (@kakoline125) March 5, 2020

About Sōryū-class submarine

Soryu-class SSK off Yokosuka naval base in June 2019. Naval News picture
Soryu-class SSK off Yokosuka naval base in June 2019. Naval News picture

The keel for the first submarine in the class, Soryu (SS-501), was laid down in March 2005. It was launched in December 2007 and commissioned in March 2009. The latest Soryu class SSK to joint the fleet is SS-510 JS Shōryū which was commissioned on March 18, 2019. The 12th and final submarine SS-512 JS Tōryū (とうりゅう) was launched in November 2019. Twelve Soryu-class submarines are currently planned for the JMSDF.

The Soryu-class is an improved version of the Oyashio-class submarine. Soryu-class submarines are the world’s largest conventionally powered submarines. All submarines of the class are named after dragons: Soryū means Blue Dragon, Hakuryū (2nd in the class) White Dragon, Sekiryū (8th in the class) Red Dragon, Shoryu (10th in the class) means Soaring Dragon…

Li-Ion batteries

The design features improved underwater endurance thanks to lithium-ion batteries from the eleventh submarine in the class. Previous submarines use Lead-acid batteries. Designed by GS Yuasa, the high-performance Li-Ion batteries are said to store about double the power. The last two submarines of the class, fitted with the new battery technology, will probably serve as test-bed for the next generation of Japanese SSK.

Soryu-class Main characteristics

SS-511 JS Ōryū おうりゅう
SS-511 JS Ōryū おうりゅう during its commissioning ceremony. Picture by しゅう @E86EQCGgcVP2HwO

Length 84.0m
Width 9.1m
Depth 10.3m
Draft 8.4m
Displacement 2,950 Tons
Engine:
– Kawasaki 12V 25 / 25SB type diesel engine 2 groups
– Kawasaki Kokkamusu V4-275R Stirling engine four
Propulsion motor: 1
Number of propellers: 1
Speed 20 knots

艦番号511おうりゅう
自衛艦旗授与式 pic.twitter.com/STMHVmwasU

— しゅう (@E86EQCGgcVP2HwO) March 5, 2020
Japan Japan Maritime Self-Defense Force JMSDF Soryu-class Submarine 2020-03-05
Tags Japan Japan Maritime Self-Defense Force JMSDF Soryu-class Submarine
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SAS 2023

Authors

Posted by : Xavier Vavasseur
Xavier is based in Paris, France. He holds a Bachelor’s degree in Management Information Systems and a Master of Business Administration from Florida Institute of Technology (FIT). Xavier has been covering naval defense topics for nearly a decade.

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