Japanese Imperial Navy I-400 Class WWII Submarine Sub Wood Wooden Model. Military Mahogany is proud to announce the release of this Japanese Imperial Class submarine the I-400. They were the largest submarines built during WWII and remained the largest until the construction of nuclear ballistic missile submarines. They carried up to 4 float planes and were intended to be used to bomb the Panama Canal. International Buyers - Please Note.Military APO/FPO addresses are still accepted. The item "Japanese Imperial Navy I-400 Class WWII Sub Submarine Mahogany Wood Model New" is in sale since Tuesday, October 16, 2018. This item is in the category "Collectibles\Transportation\Aviation\Military Aircraft\Desk & Shelf Models". The seller is "mikesmilitarymachines" and is located in Tennessee. This item can be shipped worldwide.