Kashino was a ammunition ship operated by the Imperial Japanese Navy from 1940 until she was sunk by a United States Navy submarine in 1942. She was built to carry the Yamato-class battleship's main battery from the Kure Naval Arsenal to the shipyards where the battleships were being constructed. When the ships were completed, Kashino was converted to carry ammunition and other supplies. While Japan had originally intended to build at least three Yamato-class battleships, it was decided in June 1942 to complete the third ship, Shinano, as an aircraft carrier. As no other battleships were under construction the Navy did not need a ship capable of carrying gun turrets, and Kashino was converted to an ammunition transport by covering her holds.
pic of model carrying one set of Yamato class main armament.