Submarines of the Imperial Japanese Navy
Imperial Japanese Navy submarines originated with the purchase of five Holland type submarines from the United States in 1904. Japanese submarine forces progressively built up strength and expertise, becoming by the beginning of World War II one of the world's most varied and powerful submarine fleets.
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.