| rowspan="3" | Uses [[Zero Fighter Type 21]]s for improvement past ★+6.<br>Uses [[Zero Fighter Type 21]]s for upgrade.
+
| rowspan="3" | Uses 2 [[Zero Fighter Type 21]]s for improvement past ★+6.<br>Uses 3 [[Zero Fighter Type 21]]s to upgrade to [[Type 2 Seaplane Fighter Kai]].