[[Kantai Collection]] character [[personification|personifying]] the nameship of three [i]Yamashio Maru[/i]-class escort carriers, the only one completed during World War II. She is the first shipgirl for artist [[Umihara Sakana]].

Yamashio Maru has [[long_hair|long]] [[black hair]] tied into a [[single braid]] with some hair at either side of her head [[gradient_hair|gradiating]] to [[brown_hair|brown]]. She also has [[black eyes]]. She wears a [[military uniform]] composed of a [[long_sleeves|long-sleeved]] [[collared_shirt|collared]] [[beige shirt]] with [[breast pocket]]s, a partly black, partly [[brown_skirt|brown]] [[pleated_skirt|pleated]] [[miniskirt]], [[black gloves|black]] [[fingerless gloves]], [[brown_legwear|brown]] [[striped_legwear|striped]] [[thighhighs]], and [[black footwear|black]] [[boots]]. She also has a [[chest harness]] which is attached to her only visible machinery, a [[flight deck]].

The historical [i]Yamashio Maru[/i] 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 [i]Chigusa Maru[/i] and [i]Zuiun Maru[/i], incomplete when Japan surrendered, subsequently served post-war as originally intended by their builders -- as tankers.
山汐丸 山汐丸(艦隊これくしょん) 山汐丸(艦これ)