|[[Prototype Seiran]] (★+3)<br>[[12cm Single High-angle Gun Mount + 25mm Machine Guns Additions]] (★+2)<br>[[14cm Twin Gun Mount Kai 2]] (★+2) | |[[Prototype Seiran]] (★+3)<br>[[12cm Single High-angle Gun Mount + 25mm Machine Guns Additions]] (★+2)<br>[[14cm Twin Gun Mount Kai 2]] (★+2) |