** Improvement & upgrade: [[5inch Single Gun Mount Mk.30]], [[5inch Single Gun Mount Mk.30 Kai]], [[533mm Quintuple Torpedo Mount (Initial Model)]]
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** Improvement & upgrade: [[5inch Single Gun Mount Mk.30]], [[5inch Single Gun Mount Mk.30 Kai]], [[533mm Quintuple Torpedo Mount (Initial Model)]], [[SG Radar (Initial Model)]]