JS Kenryū (SS-504) is the fourth boat of Sōryū-class submarines.

[2] Kenryū was laid down at Kawasaki Heavy Industries Kobe Shipyard on March 31, 2008, as the 2007 plan 2900-ton submarine No.

8119 based on the medium-term defense capability development plan.

Kenryū participated in US dispatch training (to Hawaii) from January 18 to April 9, 2016.

[4] Media related to JS Kenryū (SS-504) at Wikimedia Commons