Japan’s New Taigei-class Lithium-Ion Attack Submarines Summed Up in 1 Word

Automatically curated summary from 19FortyFive.

Japan’s Maritime Self-Defense Force is deploying a planned fleet of ten Taigei-class diesel-electric attack submarines to enhance undersea deterrence amid rising regional security tensions with China. Replacing the Sōryū-class, the lead ship was commissioned in 2022. The new vessels replace Stirling air-independent propulsion with lithium-ion batteries, which reportedly boost underwater endurance, speed, and power capacity without compromising acoustic stealth. Equipped with Type-89 torpedoes and Sub-Harpoon missiles, the 3,000-ton submarines incorporate advanced sonar arrays and raft-mounted machinery designed to minimize underwater vibration and noise.

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Detailed specifications regarding onboard sensors, electronic capabilities, and classified stealth technology remain unverified due to military secrecy.