* '''2021-03-30:''' Became upgradeable to {{Equipment/Link|Type 21 Air Radar Kai Ni}}, build rate with Akizuki-class increased, visible bonuses added | * '''2021-03-30:''' Became upgradeable to {{Equipment/Link|Type 21 Air Radar Kai Ni}}, build rate with Akizuki-class increased, visible bonuses added |