| req = Complete 4 (S Rank) Victories on the same day with a fleet consisting of Oyashio Kai Ni and Kuroshio Kai Ni as flagship while the other is the 2nd ship in the fleet. | | req = Complete 4 (S Rank) Victories on the same day with a fleet consisting of Oyashio Kai Ni and Kuroshio Kai Ni as flagship while the other is the 2nd ship in the fleet. |