The Japanese Ministry of Defense (MoD) has received the seventh Soryu-class submarine from Mitsubishi Heavy Industries (MHI) at the MHI Kobe Shipyard & Machinery Works, Hyogo Prefecture, Tokyo.

To be deployed by the Japan Maritime Self-Defense Force (JMSDF), the Jinryu is the fourth submarine built by the company.

The Soryu-class series carries a hydrodynamic design based on the Oyashio-class submarine. It has a larger displacement than any other submarine class in JMSDF’s service.

"Engines provide a total power output of 2,900kW surfaced and 6,000kW when submerged."

Featuring computer-aided X control planes, the hull form is made of high tensile steel and is covered with anechoic coating to reduce the reflection of acoustic waves.

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Interiors of the submarine boast acoustic isolation of loud components, while the design incorporates highly automated systems.
Construction on the boat started on 14 February 2012 and was launched on 8 October 2014.

Equipped with Stirling engines for increased propulsion performance and underwater endurance, the submarine supports advanced submerged operations.

In addition, the onboard high-performance sonar improves surveillance operations. The submarine also features stealth capabilities and has enhanced safety measures such as snorkel equipment.

Soryu is powered by a diesel-electric propulsion system. Two Kawasaki 12V 25/25 SB-type diesel engines and four Kawasaki Kockums V4-275R Stirling engines provide a total power output of 2,900kW surfaced and 6,000kW when submerged.

The company claims to have produced a total of 26 submarines at the MHI Kobe Shipyard over the last seven decades.