JS Chiyoda (ASR-404) is a submarine rescue ship of Japan Maritime Self-Defense Force. Chiyoda was built as a replacement for the older dilapidated submarine rescue ship with the same name, the JS Chiyoda (AS 405). In terms of design, it is said to be an expanded version of the later, more modern submarine rescue ship JS Chihaya (ASR 403). The appearance is almost the same as Chihaya, but the mast has been changed to a tower shape. Both the installed DSRV and ROV are new, and the number of people...
