Kongou-kai class main battery armament particularly same remodel “Haruna” got [Br] specialization improvement, 35.6cm coaxial mounting from “what If” enhanced late improvement version. [Br] high-precision range finder furthermore, for firing speed improvement in every take in combat training, it is possible to coordinate with every [Br] model. Include hitting at many aquatic night battle, in particular [Br] improved greatly. It show true value when used on [Br] “Haruna Kai-ni” in aquatic battle operation!