See post #2182574.
She has yellow eyes and medium-length messy red hair with an ahoge. Her default outfit is the Konishi-designed Kagerou-class standard uniform: a white dress shirt with a black vest, and a red neckerchief. She also wears a black pleated skirt, white gloves, black thighhighs, and loafers.
Her combat gear includes a twin-cannon turret held like a large pistol, with a backpack-like mount for a smokestack that carries swing-arms for more turrets. On her hip, she carries a pouch with depth charges, and tosses one in her official art. She also wears a belt that carries smaller anti-air guns and a searchlight as a belt buckle. (Due to similarity of design, the buckle can bring Kamen Rider references.)
The historical IJN Arashi bears the quite dubious distinction of being the ship that may have inadvertently led to the crushing Japanese loss at Midway in June 1942 before being sunk in a night action in August 1943.