"Japanese submarines I-13 class and I-400 class", Ushio Shobō (Japan), July 1977, Book code 8343-7 The Maru Special, Japanese Naval Vessels No.31, "Japanese Submarines I", Ushio Shobō (Japan), September 1979, Book code 68343-31 Senshi Sōsho Vol.88 Naval armaments and war preparation (2), "And after the outbreak of war", Asagumo Simbun (Japan), October 1975 See also Cruiser submarine Submarine classes Submarines of the Imperial Japanese Navy