Changes

!rowspan=2| Main Gun

!rowspan=2| Main Gun

!Small Caliber

!Small Caliber

|[[12.7cm Twin Mount Type-D Kai 2]]

|[[12.7cm Twin Gun Mount Model D Kai 2]]

|-

|-

!Large Caliber

!Large Caliber

|[[41cm Twin Gun Mount Kai 2]]{{·}}[[41cm Triple Gun Mount Kai 2]]{{·}}[[51cm Twin Gun Mount]]

|[[41cm Twin Gun Mount Kai Ni]]{{·}}[[41cm Triple Gun Mount Kai Ni]]{{·}}[[51cm Twin Gun Mount]]

|-

|-

!colspan=2| Anti-Air Gun

!colspan=2| Anti-Air Gun

|[[12cm 30 Tube Rocket Launcher Kai 2]]

|[[12cm 30-tube Rocket Launcher Kai Ni]]

|-

|-

!colspan=2| Midget Submarine

!colspan=2| Midget Submarine

|-

|-

!colspan=2| Shell

!colspan=2| Shell

|[[Type 1 Armor-Piercing (AP) Shell Kai]]

|[[Type 1 Armor Piercing Shell Kai]]

|}

|}