Description

The I-400 was a submarine of the Imperial Japanese Navy during World War II. At the time, the I-400 was a submarine like never seen before, the largest ever designed and the one with the most technical features, including the ability to accommodate 3 Seiran bombers in its holds.

The I-400 is considered the forerunner of modern nuclear submarines.

Displacement: 5.2tn
Armament: 8 torpedo tubes; 1 140 mm cannon; 3 batteries of 25 mm cannons, 1 automatic 25 mm cannon
Speed: 18.75 knots (35 km/h)