Maru-Yu
マルゆ
Gender: Female
A shipgirl based on the real-life WWII-era Japanese Navy's type 3 submergence transport vehicle.
In the Shimakaze Tsumujikaze no Shoujo manga, she introduces herself as a lost submarine-type shipgirl from the Kure Base and asks Shimakaze and Asashio for help in getting back home.
