Unryū was laid down at Kawasaki Heavy Industries Kobe Shipyard on 31 March 2006 as the 2005 plan 2900-ton submarine No.

[citation needed] On 24 September 2013, she left Kure for Hawaii for training in the United States.

[citation needed] From 10 to 15 May 2016, joint training such as anti-submarine training was conducted with the Royal Australian Navy submarine HMAS Rankin off the coast of Shikoku.

[citation needed] From 14 October 2016 to 14 January 2017, he participated in the US dispatch training (toward Hawaii).

[citation needed] Media related to JS Unryū (SS-502) at Wikimedia Commons