In real life, she was a one-off munitions ship specifically built to transport the Yamato-class main armaments: 460 mm guns and their triple turrets. As the Yamato-class were built in secrecy, Kashino herself was referred to as an "auxiliary turret conveyance warship" to hide her true task.
Eventually converted to an ordinary ammunition ship once Musashi was completed and Shinano ordered converted to a carrier.
