ProtectedSubmarines Japan commissions third Taigei sub By ANI - March 15, 2024 0 753 Japan's third Taigei class submarine. The Japan Maritime Self-Defense Force (JMSDF) has commissioned the third of its Taigei-class diesel-electric attack submarines (SSK), which feature better underwater endurance than its older boats, Naval News reports. Please Login to view this content. (Not a member? Join Today!)