JS Chōgei

For other ships with the same name, see Japanese ship Chōgei.
Chōgei before being launched, 4 October 2024
History
Japan
NameChōgei
BuilderMitsubishi Heavy Industries Kobe Shipyard
Cost68.4 billion yen
Laid down19 April 2022
Launched4 October 2024
Commissioned10 March 2026
IdentificationPennant number: SS-517
StatusActive
General characteristics
Class & typeTaigei-class submarine
Displacement3,000 t (3,000 long tons) (standard)
Length84 m (275 ft 7 in)
Beam9.1 m (29 ft 10 in)
Depth10.4 m (34 ft 1 in)
Installed power6,000 PS (4,400 kW; 5,900 hp) (shaft output)
PropulsionDiesel-electric transmission, lithium-ion batteries
Crew70
Sensors &
processing systems
  • OYX-1 Information processing subsystem
  • ZQX-12
  • 1x ZPS-6H surface search radar
  • ZQQ-8 Integrated Sonar
Armament

Chōgei (ちょうげい) is a diesel-electric submarine of the Japan Maritime Self-Defense Force, and the fifth and final member of the Taigei class. Her name is written in kanji as "長鯨", literally meaning "giant whale",[1][better source needed][2][3] and this is the third use of the name, after the Meiji-era steamboat Chōgei Maru, and the Imperial Japanese Navy's Jingei-class submarine tender Chōgei.[2][3]

Construction and career

Chōgei was laid down on 19 April 2022 at Mitsubishi Heavy Industries Kobe Shipyard as part of the JMSDF's Mid-Term Defense Program of 2021, and was launched on 4 October 2024 after being christened. After being fitted out and underwent various trials, the vessel was handed over to the Japan Maritime Self-Defense Force for commissioning on 10 March 2026.[2][3][4]

References

  1. ^ 防衛省 海上自衛隊 [@JMSDF_PAO] (4 October 2024). "10月4日、三菱重工業(株) 神戸造船所において、たいげい型 潜水艦5番艦の命名式・進水式が行われ、「ちょうげい 」 と命名されました。「ちょうげい」は「長鯨」と書き、巨大な鯨を意味します。" [On October 4th, the naming and launching ceremony for the fifth Taigei-class submarine was held at the Mitsubishi Heavy Industries Kobe Shipyard, and the submarine was named "Chōgei." "Chōgei" is written as "long whale" and means giant whale.] (Tweet) (in Japanese). Retrieved 5 October 2024 – via X (formerly Twitter).
  2. ^ a b c "艦名は？ 海自の最新潜水艦たいげい型5番艦ついに進水！ 新たな「海の忍者」誕生へ" [What is the name of the ship? The fifth Taigei-class submarine of the JMSDF has finally been launched! A new "Ninja of the Sea" is born!]. 乗りものニュース (in Japanese). 4 October 2024. Retrieved 4 October 2024.
  3. ^ a b c Takahashi, Kosuke (4 October 2024). "海自の最新潜水艦たいげい型5番艦「ちょうげい」が命名・進水　旧海軍の潜水母艦「長鯨」に由来" [The MSDF's newest Taigei-class submarine, Chogei, is named and launched after the former Imperial Japanese Navy submarine tender Chogei.]. Yahoo!ニュース (in Japanese). Retrieved 4 October 2024.
  4. ^ Takahashi, Kosuke (10 March 2026). "海自の最新潜水艦たいげい型5番艦「ちょうげい」就役　高出力の新型ディーゼル機関採用　横須賀基地に配備" [The JMSDF's latest Taigei-class submarine, Chogei, is commissioned and equipped with a new high-power diesel engine. It is deployed at Yokosuka Base.]. Yahoo News Japan (in Japanese). Retrieved 12 March 2026.
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