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.
About Sōryū-class submarine
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…
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
Displacement 2,950 Tons
– 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