https://www.navalnews.com/naval-news/2023/10/japan-launches-fourth-taigei-class-submarine-for-jmsdf/
Japan Launches Fourth Taigei-Class Submarine for JMSDF
Japan’s Kawasaki Heavy Industries (KHI) has launched the fourth Taigei-class diesel-electric attack submarine "Raigei" 「らいげい」 for the Japan Maritime Self-Defense Force (JMSDF).
The new 3,000-tonne diesel-electric submarine (SSK), which has been named 「らいげい」 Raigei (with pennant number SS 516), entered the water on October 17 in a ceremony held at KHI’s facilities in Kobe City. The newly launched SSK will use the new Kawasaki 12V 25/31 diesel engines with high output power for the first time.
Raigei, which cost about 70.2 billion yen ($470 million) to build, is expected to enter service in March 2025. Raigei means “thunder whale” in Japanese. The Taigei-class submarines all incorporate “Gei” (whale) into their names, following the “Shio” (tide) and “Ryu” (dragon) series seen in previous JMSDF submarines. “Taigei” itself means “big whale.”
According to the JMSDF, the new submarine has a crew complement of about 70, an overall length of 84 meters, a beam of 9.1 m, a draught of 10.4 m, and a standard displacement of about 3,000 tonnes. It is just slightly larger than the preceding Soryu-class SSKs, which have a standard displacement of 2,950 tonnes.
The Taigei-class features female-only compartments such as a living space for up to six women, according to the JMSDF. This is a first for a Japanese class of submarines.