Submarines of the Imperial Japanese Navy
The ("I-15"-class) submarines (, , , , , , , , , , , , , , , , , , , ) were the most numerous type of submarines of the Imperial Japanese Navy during World War II. In total 20 were made, starting with "I-15", the class ship. These were fast, very long ranged, and carried a single Yokosuka E14Y seaplane, located in a hangar in front of the conning tower, launched by a catapult.
Japanese submarine I-202
I-202 was one of only three s of the Imperial Japanese Navy to be completed during World War II. The "I-201" class were of advanced design, and had been built for high underwater speed. They were the fastest operational submarines built during World War II, surpassing even the German Type XXI submarines.