Submarine RAIGEI Launched

Oct. 17, 2023

Tokyo, October 17, 2023 — Kawasaki Heavy Industries, Ltd. today held a ceremony marking the launch of the submarine RAIGEI at its No.1 Building Berth in Kobe Shipyard which is built for the Japan Ministry of Defense (MOD). The ceremony was attended by a delegation of top MOD officials.

The submarine is the fourth Taigei class submarine, and the 31st built at Kawasaki Kobe shipyard after World War II.

It provides superior submerged operation and propulsion performance, and has high water pressure resistance by using high strength steel for its pressure hull. Additionally, it has new type of engines. It also has lithium-ion battery systems for increased underwater endurance, a variety of automated systems, improved surveillance capabilities using high-performance sonar, increased stealth capabilities, enhanced safety measures and several facilities for female crew members.

The submarine’s construction timetable and specifications are as follows:

Construction Timetable
Construction begun March 26, 2021
Launched October 17, 2023
Estimated completion March, 2025
Length 84.0m
Beam 9.1m
Depth 10.4m
Displacement 3,000 tons
Engines Kawasaki 12V 25/31-type diesel engines (2)
Electric propulsion motor (1)
Armament Underwater launch tubes
Other Submarine snorkel


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