JS Hakugei (SS-514), "White Sperm Whale",[1][2] is the second boat of the Taigei-class attack submarine of Japan Maritime Self-Defense Force.

The submarine was ordered from Kawasaki Heavy Industries in 2018 and laid down on 25 January 2019 at Kobe, Japan.

[5][6] In addition, in response to the lifting of restrictions on the placement of female SDF personnel on submarines, the work of female SDF personnel is being supported by establishing partitions in the living quarters and separate sleeping quarters for women.

Hakugei was laid down at Kawasaki Heavy Industries Kobe Shipyard on 25 January 2019 as the 2017 plan 3000-ton submarine No.

It was handed over to the Maritime Self-Defense Force on 20 March 2022.