The historical Yamashio Maru was completed and commissioned on 27 January 1945, but was sunk at Yokohama harbor by US aircraft on 17 February the same year before she could be used, hence shipgirl's Yamashio Maru very low luck stat. Her sister ships Chigusa Maru and Zuiun Maru, incomplete when Japan surrendered, subsequently served post-war as originally intended by their builders -- as tankers.
