*[[Type 91 Anti-Aircraft Fire Director]] use [[12.7cm Twin High-angle Mount]] for improvement past ★+6 and use [[10cm Twin High-angle Mount]] for upgrading.
−
*[[Type 94 Anti-Aircraft Fire Director]] use [[10cm Twin High-angle Mount]](Akizuki and Fubuki Kai-2) or [[12.7cm Twin High-angle Mount]](Maya) for improvement. For upgrading: with Akizuki or Fubuki Kai-2 consumes [[10cm Twin High-angle Mount]] to make [[10cm Twin High-angle Mount + Anti-Aircraft Fire Director]]; with Maya Kai-2 consumes [[12.7cm Twin High-angle Mount]] to make [[12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director]]
−
*[[10cm Twin High-angle Mount + Anti-Aircraft Fire Director]] use [[10cm Twin High-angle Mount]] for improvement past ★+6.
−
*[[61cm Triple Torpedo Mount]] requires Fubuki or Fubuki Kai as 2nd ship, Fubuki Kai-2 not valid.
−
*[[61cm Triple (Oxygen) Torpedo Mount]] use [[61cm Triple Torpedo Mount]] for improvement past ★+6 and use [[61cm Quad Torpedo Mount]] for upgrading.
−
*[[Type 1 Armor-Piercing (AP) Shell|Type 1 AP Shell]] use [[Type 91 Armor-Piercing (AP) Shell|Type 91 AP Shell]] for improvement before ★+6. Consumes itself past ★+6.
−
*[[38cm Twin Gun Mount]] use [[35.6cm Twin Gun Mount]] for improvement and use [[41cm Twin Gun Mount]] for upgrading.
−
*[[38cm Twin Gun Mount Kai]] use [[41cm Twin Gun Mount]] for improvement.
−
*[[Prototype 46cm Twin Gun Mount]] use [[41cm Twin Gun Mount]] for improvement and upgrading.
−
*[[381mm / 50 Triple Gun Mount]] use [[35.6cm Twin Gun Mount]] for improvement and [[25mm Twin Autocannon Mount]] for upgrading.
−
*[[381mm / 50 Triple Gun Mount kai]] use [[41cm Twin Gun Mount]] for improvement.
−
*[[90mm Single High Angled Gun]] use [[10cm Twin High-angle Mount]] for improvement.
−
*[[OTO 152mm triple extended machine gun]] use [[15.5cm Triple Gun Mount (Main)]] for improvement past ★+6.