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 tender Jingei
, was the lead vessel of the s operated by the Imperial Japanese Navy, from the 1920s through World War II. She was the first purpose-built submarine tender in the Imperial Japanese Navy.