Destroyers

For the complete Imperial Japanese Navy Destroyer Tech Tree click here

Cruisers

For the complete Imperial Japanese Navy Cruiser Tech Tree click here

Battlecruisers & Battleships

For the complete Imperial Japanese Navy Battlecruisers & Battleships Tech Tree click here

Aircraft Carriers

For the complete Imperial Japanese Navy Aircraft Carriers Tech Tree click here

Submarines

For the complete Imperial Japanese Navy Submarines Tech Tree click here

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