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Home» News»MHI Just Launched the First of the New Taigei-class Submarines for JMSDF
IMDEX Asia 2023

MHI Just Launched the First of the New Taigei-class Submarines for JMSDF

Japan's newest submarine “Taigei” (previously known as 29SS) was launched today at the Mitsubishi Heavy Industries (MHI) shipyard in Kobe, Hyogo Prefecture.

Yoshihiro Inaba 14 Oct 2020

Taigei means “Great Whale” in Japanese and was once used as the name of a submarine tender of the Imperial Japanese Navy. The Japan Maritime Self-Defense Force (JMSDF) uses the names of submarines to refer to (1) things related to oceanographic phenomena, (2) legendary creatures and (3) underwater animals. This leaves three main classes of submarines to be operated by the JMSDF in the future: the Oyashio-class is named after underwater currents and tides, the Sōryū-class submarines are named after dragons, and it appears that the new Taigei-class will be named after whales or large fishes.

MHI Just Launched the First of the New Taigei-class Submarines for JMSDF
The external appearance of the Taigei is not much different from the Sōryū-class, but inside of it is a completely different submarine. Japan MoD picture.

The external appearance of the Taigei is not much different from the Sōryū-class, but inside of it is a completely different submarine. First, the Taigei uses lithium-ion batteries instead of the 4V-275R Mk. III AIP system, which was installed aboard the first 10 Sōryū-class submarines.

Secondly, the capabilities of the sonar and combat command system have been improved, as well as the use of new accoustic absorbent materials and a floating floor structure to make it quieter. It is also equipped with Torpedo Counter Measures (TCM), which ejects decoys to evade enemy torpedoes for improved survivability.

10月14日、#岸防衛大臣 は三菱重工業(株)神戸造船所にて、平成29年度計画潜水艦の命名・進水式に出席し、この潜水艦を「たいげい」と命名しました。
「たいげい」は「大鯨」と書き、文字通り大きな鯨を意味します。 pic.twitter.com/5XaAhvuPcv

— 防衛省・自衛隊 (@ModJapan_jp) October 14, 2020

The Taigei is scheduled to be commissioned into the JMSDF in March 2022, after which it will be used as a test submarine, according to the “National Defense Program Guidelines for FY 2019 and beyond” published in December 2018. In other words, Taigei will be the dedicated ship to conduct all future tests of technology on JMSDF submarines.

Basic Specificationsof Taigei

Standard Displacement: about 3000 tons

Length: 84 meters

Total width: 9.1 meters

Crew: about 70

Propulsion: Diesel Electric Propulsion (with lithium-ion batteries)

Japan Japan Maritime Self-Defense Force Mitsubishi Heavy Industries Shipbuilding Submarine Taigei-class 2020-10-14
Tags Japan Japan Maritime Self-Defense Force Mitsubishi Heavy Industries Shipbuilding Submarine Taigei-class
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DEFEA 2023

Authors

Posted by : Yoshihiro Inaba
Yoshihiro Inaba is a Freelance Writer based in Shizuoka, Japan. He is one of the few young military writers in Japan and is currently a student studying international law (especially self-defense and use of force) at a Japanese graduate school. He is particularly familiar with Japan's Ground, Maritime and Air Self-Defense Forces.

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