Japan Maritime Self-Defense Force (JMSDF) capabilities have taken another significant leap forward with the commissioning of the third Taigei-class diesel-electric submarine (SSK). Dubbed JS Jingei, this submarine was formally handed over to the JMSDF on 8 March, marking a crucial addition to Japan’s naval arsenal. The Taigei-class submarines, aptly named incorporating “Gei” (whale) into their titles, continue Japan’s tradition of formidable naval prowess. “Jingei,” translating to “speedy whale” in Japanese, symbolizes both the agility and strength inherent in this modern vessel. With previous series bearing the names “Shio” (tide) and “Ryu” (dragon), the Taigei class stands as a testament to Japan’s commitment to maritime defense.
Crafted with precision at Mitsubishi Heavy Industries’ (MHI) shipyard in Kobe, JS Jingei boasts impressive specifications. Displacing approximately 3,000 tonnes when surfaced, with dimensions of 84 meters in length, 9.1 meters in beam, and an 8.5-meter hull draught, the vessel exudes both power and versatility. With accommodations for a crew of 70, including provisions for female crew members, it ensures operational efficiency and inclusivity. The vessel’s innovative design features an X-configuration stern rudder, enhancing maneuverability, particularly in shallow waters. Propelled by two Kawasaki 12V 25/25SB diesel engines and equipped with lithium-ion batteries, JS Jingei can reach speeds exceeding 20 knots when submerged, ensuring swift and stealthy operations.
JS Jingei is equipped with advanced sensor technology, including bow- and flank-mounted sonars, along with towed array sensors, optimizing detection capabilities across thermal layers. The integration of lithium-ion batteries, a technology pioneered by Japan, underscores the nation’s commitment to staying at the forefront of naval innovation. The Taigei class’s combat capabilities are bolstered by a new combat management system (CMS) that integrates advanced sensors, command-and-control, and weapon engagement systems. The Taigei class is armed with the latest torpedo counter-measures system and Japan’s newest torpedo, the Type 18, enhancing its offensive capabilities. The deployment of the UGM-84L Harpoon Block II anti-ship missile provides Japan with a robust counterattack capability against surface threats.
Japan’s commitment to bolstering its naval fleet is evident with the construction of additional Taigei-class submarines. With funds allocated for the construction of four more vessels, Japan aims to maintain its naval superiority in the region. The decision to continue the construction of submarines aligns with Japan’s defense strategy, ensuring a seamless transition from aging fleets to cutting-edge vessels. Looking ahead, Japan’s Defense Ministry must contemplate the next generation of submarines to sustain its maritime dominance. As funds are secured for future projects, Japan remains steadfast in its commitment to safeguarding its maritime interests and ensuring regional stability. With the commissioning of JS Jingei, Japan reaffirms its status as a formidable naval power in the Asia-Pacific region.
