| I-1 伊1 イ1 | |
| Type (Class): J1 (I-1) |
| Call Sign: JUAD |
| Builder: Kawasaki Shipbuilding Co, Kobe | |
| Ordered: | 1922 |
| Laid Down: | | 12.03.1923 |
| Launched: | | 15.10.1924 |
| Completed: | | 10.03.1926 |
| Service: |
| Yokosuka ND | | 10.03.26–01.08.26 |
| SubDiv 7, 2nd SubRon, 2nd Fleet | | 01.08.26–00.00.00 |
| SubDiv 7, 2nd SubRon, 2nd Fleet | | 01.08.26–01.07.27 |
| SubDiv 7, Yokosuka Defence Div, Yokosuka ND | | 01.07.27–15.09.27 |
| Yokosuka ND | | 15.09.27–10.09.28 |
| SubDiv 7, Sub.Ron.2, 2nd Fleet | | 10.09.28–30.11.29 |
| SubDiv 7, Yokosuka Defence Div, Yokosuka ND | | 30.11.29–01.08.30 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 01.08.30–01.10.31 |
| SubDiv 7, Yokosuka Defence Div, Yokosuka ND | | 01.10.31–01.12.31 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 01.12.31–01.10.32 |
| SubDiv 7, Yokosuka Defence Div, Yokosuka ND | | 01.10.32–15.11.33 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 15.11.33–15.11.35 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 15.11.34–15.11.35 |
| SubDiv 7, Yokosuka ND | | 15.11.35–01.12.36 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 01.12.36–15.11.39 |
| SubDiv 7, Yokosuka ND | | 15.11.39–15.11.40 |
| SubDiv 7, 2nd SubRon, 6th Fleet | | 15.11.40–20.08.42 |
| SubDiv 7, 6th Fleet | | 20.08.42–29.01.43 |
| Fate: Sunk 29.01.43 21:35 by HMNZS Moa (09°13'S, 159°40'E). 27 dead; 66 saved. |
| Removed from Navy List | | 01.04.1943 |
| Commanding Officers: |
| LtCdr Kasuga Atsushi (37) | 春日 篤 | 01.04.25–29.07.27 |
| LtCdr Kasuga Sueaki (37) | 春日末章 | 30.07.27–10.12.28 |
| LtCdr Nakamura Motoji (39) | 中邑元司 | 10.12.28–05.11.29 |
| Reserve | | 15.11.29–15.11.30 |
| LtCdr Sato Shiro (43) | 佐藤四郎 | 15.11.30–01.12.31 |
| LtCdr Nagai Mitsuru (45) | 長井 満 | 01.12.31–31.10.33 |
| LtCdr Imazato Hiroshi (45) | 今里 博 | 01.11.33–15.11.35 |
| Reserve | | 15.11.35–15.02.36 |
| Cdr Otake Toshio (45) | 大竹寿雄 | 15.02.36–01.11.36 |
| LtCdr Kobayashi Hajime (48) | 小林 一 | 01.11.36–01.12.36 |
| LtCdr Miyazaki Takeji (43) | 宮崎武治 | 01.12.36–15.10.37 |
| LtCdr Hamano Motoichi (47) | 浜野元一 | 15.10.37–20.11.39 |
| Cdr Kato Ryonosuke (48) | 加藤良之助 | 20.11.39–06.07.40 |
| Capt Oda Tamekiyo (43) | 小田為清 | 06.07.40–15.09.40 |
| Cdr Otani Kiyonori (49) | 大谷清教 | 30.10.40–25.08.41 |
| Cdr Ankyo Eitaro (50) | 安久栄太郎 | 25.08.41–31.10.42 |
| *LtCdr Sakamoto Eiichi (57) | 坂本栄一 | 31.10.42–29.01.43 |
| I-1 (2) 伊1 イ1 |
| Type (Class): J1 (I-1) |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 24.06.1943 |
| Launched: | | 10.06.1944 |
| Completed: | | — |
| Fate: Hull sunk 18.09.45. |
| I-2 伊2 イ2 |
| Type (Class): J1 (I-1) |
| Call Sign: JUBD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | 1922 |
| Laid Down: | | 06.08.1923 |
| Launched: | | 23.02.1925 |
| Completed: | | 24.07.1926 |
| Service: |
| Yokosuka ND, | | 24.07.26–01.08.26 |
| SubDiv 7, 2nd SubRon, 2nd Fleet | | 01.08.26–01.07.27 |
| SubDiv 7, Yokosuka Defence Div., Yokosuka ND | 01.07.27–15.09.27 |
| SubDiv 7, 2nd SubRon, 2nd Fleet | | 15.09.27–30.11.29 |
| SubDiv 7, Yokosuka Defence Div, Yokosuka ND | 30.11.29–01.08.30 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 01.08.30–01.10.31 |
| SubDiv 7, Yokosuka Defence Div., Yokosuka ND | 01.10.31–01.12.31 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 01.12.31–01.10.32 |
| SubDiv 7, Yokosuka Defence Div., Yokosuka ND | 01.10.32–15.11.33 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 15.11.33–15.11.35 |
| SubDiv 7, Yokosuka Defence Ron., Yokosuka ND | 15.11.35–20.01.36 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 20.01.36–15.12.38 |
| SubDiv 7, Submarine School, Kure, Yokosuka ND | 15.12.38–15.11.39 |
| SubDiv 7, Yokosuka ND, (3rd Reserve) | | 15.11.39–15.11.40 |
| SubDiv 7, 2nd SubRon, 6th Fleet | | 15.11.40–20.08.42 |
| SubDiv 7, 6th Fleet | | 20.08.42–31.03.43 |
| SubDiv 7, 5th Fleet | | 31.03.43–01.02.44 |
| SubDiv 7, 6th Fleet | | 01.02.44–07.04.44 |
| Fate: Sunk 07.04.44 07:23 by USS Saufley (DD-465) (02°17'S, 149°14'E). 110 dead; 0 saved. |
| Commanding Officers: |
| LtCdr Watanabe Tokushiro (37) | 渡部徳四郎 | 20.10.25–15.11.27 |
| LtCdr Kobayashi Mitsuyoshi (37) | 小林三良少佐 | 15.11.27–10.12.28 |
| LtCdr Kousokabe Yuzuru (38) | 香宗我部 譲 | 10.12.28–15.11.29 |
| Reserve | | 15.11.29–15.11.30 |
| LtCdr Akiyama Katsuzo (40) | 秋山勝三 | 15.11.30–01.12.31 |
| LtCdr Imaizumi Yoshijiro (44) | 今和泉喜次郎 | 01.12.31–22.10.34 |
| LtCdr Kume Ikuji (46) | 久米幾次 | 22.10.34–15.11.35 |
| LtCdr Kobayashi Hajime (48) | 小林 一 | 15.11.35–01.12.36 |
| Cdr Fukaya Sokichi (46) | 深谷惣吉 | 01.12.36–15.11.37 |
| LtCdr Endo Keiyu (46) | 遠藤敬勇 | 15.11.37–15.12.38 |
| LtCdr Fujii Akiyoshi (49) | 藤井明義 | 15.12.38–30.07.41 |
| Cdr Inada Hiroshi (51) | 稲田 洋 | 30.07.41–16.03.43 |
| LtCdr Morinaga Masahiko (59) | 森永正彦 | 16.03.43–15.04.43 |
| LtCdr Itakura Mitsumi (61) | 板倉光馬 | 15.04.43–15.12.43 |
| ? | | 15.12.43–20.12.43 |
| *LtCdr Yamaguchi Kazuo (61) | 山ロー生 | 20.12.43–07.04.44 |
| I-3 伊3 イ3 |
| Type (Class): J1 (I-1) |
| Call Sign: JUCD |
| Builder: Kawasai Shipyard, Kobe |
| Ordered: | 1922 |
| Laid Down: | | 01.11.1923 |
| Launched: | | 08.06.1925 |
| Completed: | | 30.11.1926 |
| Service: |
| Yokosuka ND | | 30.11.26–15.01.27 |
| SubDiv 7, 2nd SubRon, 2nd Fleet | | 15.01.27–01.07.27 |
| SubDiv 7, Yokosuka Defence Div., Yokosuka ND | 01.07.27–15.09.27 |
| SubDiv 7, 2nd SubRon, 2nd Fleet | | 15.09.27–01.05.29 |
| Yokosuka ND | | 01.05.29–01.08.30 |
| SubDiv 8, Yokosuka ND, | | 01.08.30–01.12.30 |
| SubDiv 8, 1st SubRon, 1st Fleet | | 01.12.30–01.10.31 |
| SubDiv 8, Yokosuka Defence Div., Yokosuka ND | 01.10.31–01.12.31 |
| SubDiv 8, 1st SubRon, 1st Fleet | | 01.12.31–01.10.32 |
| SubDiv 8, Yokosuka Defence Div., Yokosuka ND | 01.10.32–15.11.33 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 15.11.33–15.11.35 |
| SubDiv 7, Yokosuka Defence Ron., Yokosuka ND | 15.11.35–20.01.36 |
| SubDiv 7, 1st SubRon, 1st Fleet | | 20.01.36–15.12.38 |
| SubDiv 7, Submarine School, Kure, Yokosuka ND | 15.12.38–15.11.39 |
| SubDiv 7, 3rd Reserve, Yokosuka ND | | 15.11.39–15.11.40 |
| SubDiv 7, 2nd SubRon, 6th Fleet | | 15.11.40–20.08.42 |
| SubDiv 7, 6th Fleet | | 20.08.42–20.01.43 |
| Fate: Sunk 09.12.42 at 07:03 by USS PT-59, 3 miles NE Kamimbo Bay, Guadalcanal (09°12'S, 159°42'E). 90 dead; 4 saved. |
| Removed from Navy List | | 31.12.1942 |
| Commanding Officers: |
| LtCdr Ogino Nakaichiro (37) | 荻野仲一郎 | 01.05.26-15.01.28 |
| LtCdr Sekino Akira (38) | 関野 明 | 15.01.28-15.12.28 |
| LtCdr Michino Kiyoshi (41) | 道野 清 | 15.12.28-01.06.29 |
| LtCdr Harada Kaku (41) | 原田 覚 | 01.06.29–01.12.32 |
| Cdr Ishizaki Noboru (42) | 石崎 昇 | 01.12.32–15.11.33 |
| Cdr Uozumi Jisaku (42) | 魚住治策 | 15.11.33–01.11.34 |
| LtCdr Matsumura Midori (48) | 松村 翠 | 01.11.34–20.10.35 |
| Reserve | | 20.10.35–06.01.36 |
| LtCdr Kobayashi Hajime (48) | 小林 一 | 06.01.36–01.12.36 |
| LtCdr Matsuo Yoshiyasu (47) | 松尾義保 | 01.12.36–01.12.37 |
| LtCdr Ishikawa Nobuo (49) | 石川信雄 | 01.12.37–15.11.38 |
| Cdr Kobayashi Hajime (48) | 小林 一 | 15.11.38–23.04.39 |
| LtCdr Iura Shoujiro (51) | 井浦祥二郎 | 23.04.39–20.11.39 |
| Cdr Fujii Akiyoshi (49) | 藤井明義 | 20.11.39–25.07.40 |
| LtCdr Kinashi Takakazu (51) | 木梨鷹一 | 25.07.40–05.11.40 |
| ? | | 05.11.40–10.11.41 |
| LtCdr Tonozuka Kinzo (50) | 殿塚謹三 | 10.11.41–20.05.42 |
| *LtCdr Togami Ichiro (51) | 戸上一郎 | 20.05.42–10.12.42 |
| I-4 伊4 イ4 |
| Type (Class): J1 (I-1) |
| Call Sign: JUDD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | 1922 |
| Laid Down: | | 17.04.1926 |
| Launched: | | 22.05.1928 |
| Completed: | | 24.12.1929 |
| Service: |
| SubDiv 7, Yokosuka Defence Div., Yokosuka ND | 24.12.29–01.08.30 |
| SubDiv 8, Yokosuka ND, | | 01.08.30–01.12.30 |
| SubDiv 8, 1st SubRon, 1st Fleet, | | 01.12.30–01.10.32 |
| SubDiv 8, Yokosuka Defence Div., Yokosuka ND | 01.10.32–15.11.33 |
| SubDiv 8, 1st SubRon, 1st Fleet | | 15.11.33–15.11.35 |
| SubDiv 8, Yokosuka Defence Ron., Yokosuka ND | 15.11.35–01.12.36 |
| SubDiv 8, 1st SubRon, 1st Fleet | | 01.12.36–15.11.39 |
| SubDiv 8, 3rd Reserve, Yokosuka ND | | 15.11.39–15.11.40 |
| SubDiv 8, 2nd SubRon, 6th Fleet | | 15.11.40–20.08.42 |
| SubDiv 7, 6th Fleet | | 20.08.42–01.03.43 |
| Fate: Sunk 21.12.42 at 06:38 by USS Sea Dragon (SS-194) in St.George Channel, New Ireland (05°02'S, 152°33'E). 90 dead; 0 saved. |
| Removed from Navy List | | 01.03.1943 |
| Commanding Officers: |
| Cdr Takatsuka Seigo (38) | 高塚省吾 | 15.05.29–31.03.30 |
| LtCdr Koda Takero (41) | 古宇田武郎 | 31.03.30–01.12.31 |
| LtCdr Nakaoka Nobuki (45) | 中岡信喜 | 01.12.31–04.10.32 |
| LtCdr Teraoka Masao (46) | 寺岡正雄 | 04.10.32–15.11.35 |
| LtCdr Mizobatane Sadaichi (46) | 溝畠定一 | 15.11.35–30.06.36 |
| LtCdr Mizuguchi Hyoe (46) | 水口兵衛 | 30.06.36–01.12.37 |
| LtCdr Kobayashi Hajime (48) | 小林 一 | 01.12.37–15.11.38 |
| LtCdr Emi Tetsushiro (50) | 江見哲四郎 | 15.11.38–01.11.41 |
| LtCdr Nakagawa Hajime (50) | 中川 肇 | 01.11.41–15.08.42 |
| LtCdr Kawasaki Mutsuro (51) | 川崎陸郎 | 15.08.42–06.11.42 |
| *LtCdr Ueno Toshitake (56) | 上野利武 | 06.11.42–25.12.42 |
| I-5 伊5 イ5 |
| Type (Class): J1M (I-5) |
| Call Sign: JUED |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | 1927 |
| Laid Down: | | 30.10.1929 |
| Launched: | | 19.06.1931 |
| Completed: | | 31.07.1932 |
| Service: |
| Yokosuka ND | | 31.07.32–15.11.33 |
| SubDiv 8; SubRon 1; 1st Fleet | | 15.11.33–15.11.35 |
| SubDiv 8; Yokosuka Defence Ron.; Yokosuka ND | 15.11.35–01.12.36 |
| SubDiv 8; SubRon 1; 1st Fleet | | 01.12.36–01.05.39 |
| SubDiv 8; Submarine School, Kure; Yokosuka ND | 15.11.39–01.03.40 |
| SubDiv 8; Yokosuka ND (3rd Reserve) | | 01.03.40–01.04.40 |
| SubDiv 8; Yokosuka ND | | 01.04.40–15.11.40 |
| SubDiv 8; SubRon 2; 6thFleet | | 15.11.40–20.08.42 |
| SubDiv 7; 6th Fleet | | 20.08.42–31.03.43 |
| SubDiv 7; 5th Fleet | | 31.03.43–01.02.44 |
| SubDiv 7; 6th Fleet | | 01.02.44–10.09.44 |
| Fate: Sunk 19.07.44 at 01:25 by USS Wyman (DE-38) 360 miles E of Guam (13°01'N, 151°58'E). 130 dead; 0 saved. |
| Removed from Navy List | | 10.09.1944 |
| Commanding Officers: |
| LtCdr Sato Shiro (43) | 佐藤四郎 | 01.12.31–15.11.34 |
| LtCdr Takezaki Kaoru (45) | 竹崎 馨 | 15.11.34–21.10.35 |
| Cdr Iwagami Hidetoshi (46) | 岩上英寿 | 01.12.36–01.12.37 |
| LtCdr Uchino Shinji (49) | 内野信二 | 01.12.37–15.12.38 |
| Cdr Shimizu Taro (48) | 清水太郎 | 15.12.38–15.11.39 |
| LtCdr Nishino Kozo (48) | 西野耕三 | 15.11.39–30.11.40 |
| Cdr Shichiji Tsuneo (49) | 七字恒雄 | 30.11.40–05.02.42 |
| LtCdr Nakamura Otsuji (52) | 中村乙二 | 05.02.42–28.02.42 |
| LtCdr Utsuki Hidejiro (52) | 宇都木秀次郎 | 28.02.42–31.10.42 |
| LtCdr Sekido Yoshimitsu (57) | 関戸好蜜 | 31.10.42–20.04.43 |
| LtCdr Morinaga Masahiko (59) | 森永正彦 | 20.04.43–30.04.44 |
| *LtCdr Doi Mareshige (60) | 土居誉重 | 30.04.44–19.07.44 |
| I-6 伊6 イ6 |
| Type (Class): J2 (I-6) |
| Call Sign: JUFD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 14.10.1932? |
| Launched: | | 31.03.1934 |
| Completed: | | 15.05.1935 |
| Service: |
| Yokosuka ND | | 15.05.35–01.06.35 |
| SubDiv 8, 1st SubRon, 1st Fleet | | 01.06.35–15.11.35 |
| Yokosuka ND | | 15.11.35–01.12.36 |
| SubDiv 8, 1st SubRon, 1st Fleet | | 01.12.36–15.12.38 |
| SubDiv 8, Yokosuka ND (2nd Reserve) | | 15.12.38–01.04.39 |
| SubDiv 8, Torpedo School, Yokosuka ND | | 01.04.39–15.11.40 |
| SubDiv 8, 2nd SubRon, 6th Fleet | | 15.11.40–20.08.42 |
| SubDiv 7, 6th Fleet | | 20.08.42–31.03.43 |
| SubDiv 7, 5th Fleet | | 31.03.43–01.02.44 |
| SubDiv 7, 6th Fleet | | 01.02.44–10.09.44 |
| Fate: Sunk 30.06.44 by Toyokawa Maru NE of Hachijo Jima (15°18'N, 144°26'E). 104 dead; 0 saved. |
| Removed from Navy List | | 10.09.1944 |
| Commanding Officers: |
| Cdr Kijima Moritsugu (44) | 貴島盛次 | 25.08.34–25.05.35 |
| Cdr Nagai Takeo (47) | 長井武夫 | 25.05.35–01.12.36 |
| Cdr Okada Yusaku (47) | 岡田有作 | 01.12.36–15.11.37 |
| Cdr Oyama Toyojiro (47) | 大山豊次郎 | 15.11.37–01.11.39 |
| Cdr Nagai Hiroaki (48) | 永井宏明 | 01.11.39–30.10.40 |
| Cdr Narahara Shogo (48) | 楢原省吾 | 30.10.40–30.01.41 |
| LtCdr Inaba Michimune (51) | 稲葉通宗 | 30.01.41–23.05.42 |
| LtCdr Nakamura Shozo (54) | 中村省三 | 23.05.42–15.12.42 |
| LtCdr Izutsu Monshiro (57) | 井筒紋四郎 | 15.12.42–20.05.43 |
| LtCdr Shimose Yoshiro (58) | 下瀬吉郎 | 20.05.43–27.05.44 |
| *LtCdr Fumon Shozo (63) | 普門正三 | 27.05.44–30.06.44 |
| I-7 伊7 イ7 |
| Type (Class): J3 (I-7) |
| Call Sign: JUDG |
| Builder: Kure Navy Yard |
| Ordered 2nd Replacement Program: | | 1934 |
| Laid Down: | | 12.09.1934 |
| Launched: | | 03.07.1935 |
| Completed: | | 31.03.1937 |
| Service: |
| Yokosuka Defence Ron, Yokosuka ND | | 31.03.37–01.12.37 |
| Flagship, 1st SubRon, 1st Fleet | | 01.12.37–15.11.39 |
| Flagship, 4th SubRon, 1st Fleet | | 15.11.39–15.11.40 |
| Flagship, 2nd SubRon, 6th Fleet | | 15.11.40–20.08.42 |
| 6th Fleet | | 20.08.42–31.08.42 |
| SubDiv 7, 6th Fleet | | 31.08.42–31.03.43 |
| SubDiv 7, 5th Fleet | | 31.03.43–01.08.43 |
| Fate: Sunk 22.06.43 at 23:00 by USS Monaghan (DD-354) in Viga Bay, Kiska (51°49'N, 177°20'E). 87 dead; 43 saved. |
| Removed from Navy List | | 01.08.1943 |
| Commanding Officers: |
| Cdr Teraoka Masao (46) | 寺岡正雄 | 21.09.36–20.12.37 |
| Cdr Fujimoto Den (48) | 藤本 伝 | 20.12.37–29.06.38 |
| Cdr Iwagami Hidetoshi (46) | 岩上英寿 | 29.06.38–15.11.38 |
| Cdr Okamoto Yoshisuke (47) | 岡本義助 | 15.11.38–20.10.39 |
| Cdr Ishikawa Nobuo (49) | 石川信雄 | 20.10.39–30.10.40 |
| Cdr Nagai Hiroaki (48) | 永井宏明 | 30.10.40–20.08.41 |
| Cdr Koizumi Kiichi (49) | 小泉麒一 | 20.08.41–05.12.42 |
| LtCdr Tabata Naoshi (58) | 田畑 直 | 05.12.42–15.03.43 |
| *LtCdr Nagai Katsuhiko (57) | 長井勝彦 | 15.03.43–22.06.43 |
| I-8 伊8 イ8 |
| Type (Class): J3 (I-7) |
| Call Sign: JUHD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered under the 2nd Replacement Program: | 1934 |
| Laid Down: | | 01.10.1934 |
| Launched: | | 20.07.1936 |
| Completed: | | 05.12.1938 |
| Service: |
| Yokosuka ND | | 05.12.38–15.12.38 |
| Flagship, 2nd SubRon, 2nd Fleet | | 15.12.38–15.11.39 |
| Flagship, 3rd SubRon, 2nd Fleet | | 15.11.39–15.11.40 |
| Flagship, 3rd SubRon, 6th Fleet | | 15.11.40–16.05.42 |
| Flagship,SubRon 5 | | 16.05.42–10.07.42 |
| South West Area Fleet, | | 10.07.42–20.08.42 |
| 6th Fleet | | 20.08.42–01.04.43 |
| SubDiv 14, 8th SubRon, 6th Fleet | | 01.04.43–25.05.43 |
| 8th SubRon, 6th Fleet | | 25.05.43–05.11.44 |
| 6th Fleet | | 05.11.44–10.08.45 |
| Fate: Sunk 31.03.45 at 04:12 by USS Morrison (DD-560) ans USS Stockdon (DD-646) off Okinawa (25°59'N, 128°35'E). 130 dead; 1 saved. |
| Removed from Navy List | | 10.08.1945 |
| Commanding Officers: |
| Cdr Goto Hiroshi (48) | 後藤 汎 | 20.05.38–15.11.39 |
| Cdr Shimizu Taro (48) | 清水太郎 | 15.11.39–31.10.41 |
| Cdr Emi Tetsushiro (50) | 江見哲四郎 | 31.10.41–25.07.42 |
| Cdr Uchino Shinichi (50) | 内野信一 | 25.07.42–20.01.44 |
| Cdr Ariizumi Tatsunosuke (51) | 有泉竜之助 | 20.01.44–15.12.44 |
| *LtCdr Shinohara Shigeo (62) | 篠原茂夫 | 15.12.44–31.03.45 |
| I-9 伊9 イ9 |
| Type (Class): A1 (I-9) |
| Call Sign: JUID |
| Builder: Kure Navy Yard |
| Ordered: | 1937 |
| Laid Down: | | 25.01.1938 |
| Launched: | | 20.05.1939 |
| Completed: | | 14.02.1941 |
| Service: |
| Yokosuka ND (2nd Reserve) | | 15.11.39–13.02.41 |
| Yokosuka ND | | 13.02.41–01.09.41 |
| Flagship, 1st SubRon, 6th Fleet | | 01.09.41–01.08.43 |
| Fate: Sunk 13.06.43 by USS Frazier (DD-607) 15 miles E of Kiska (52°08'N, 177°38'E). 101 dead; 0 saved. |
| Removed from Navy List | | 01.08.1943 |
| Commanding Officers: |
| Cdr Oyama Toyojiro (47) | 大山豊次郎 | 20.12.40–31.07.41 |
| *Cdr Fujii Akiyoshi (49) | 藤井明義 | 31.07. 41–15.06.43 |
| I-10 伊10 イ10 |
| Type (Class): A1 (I-9) |
| Call Sign: JUJD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | 1937 |
| Laid Down: | | 07.06.1938 |
| Launched: | | 20.09.1939 |
| Completed: | | 31.10.1941 |
| Service: |
| Sasebo ND | | 31.10.41–10.11.41 |
| Flagship, 2nd SubRon, 6th Fleet | | 10.11.41–09.01.42 |
| 6th Fleet | | 09.01.42–10.03.42 |
| 8th SubRon, 6th Fleet | | 10.03.42–01.01.44 |
| 6th Fleet | | 01.01.44–04.07.44 |
| Fate: Sunk 04.07.44 at 18:28 by USS David W Taylor (DD-551) 65 miles ENE of Saipan (15°26'N, 147°48'E). ? dead; 0 saved. |
| Removed from Navy List | | 10.10.1944 |
| Commanding Officers: |
| Cdr Kayabara Yasuchika (49) | 栢原保親 | 31.07.41–15.09.42 |
| Cdr Yamada Takashi (49) | 山田 隆 | 15.09.42–15.04.43 |
| Cdr Tonozuka Kinzo (50) | 殿塚謹三 | 15.04.43–18.01.44 |
| *Cdr Nakajima Seiji (54) | 中島清次 | 18.01.44–04.07.44 |
| I-11 伊11 イ11 |
| Type (Class): A1 (I-9) |
| Call Sign: JUKD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | 1939 |
| Laid Down: | | 10.04.1940 |
| Launched: | | 28.02.1941 |
| Completed: | | 16.05.1942 |
| Service: |
| Flagship, 3rd SubRon, 6th Fleet | | 16.05.42–15.09.43 |
| Flagship, 1st SubRon, 6th Fleet | | 15.09.43–15.01.44 |
| 6th Fleet, Combined Fleet | | 15.01.44–30.04.44 |
| Fate: Missing as of 20.03.44; presumed sunk S of Funafuti Is., near Ellice Is. 114 dead; 0 saved. |
| Removed from Navy List | | 20.04.1944 |
| Commanding Officers: |
| Cdr Shichiji Tsuneo (49) | 七字恒雄 | 20.02.42–07.07.43 |
| Cdr Tagami Akiji (51) | 田上明次 | 07.07.43–10.10.43 |
| *Cdr Izu Junichi (51) | 伊豆寿市 | 10.10.43–20.03.44 |
| I-12 伊12 イ12 |
| Type (Class): A2 (I-12) |
| Call Sign: ? |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 05.11.1942 |
| Launched: | | 03.08.1943 |
| Completed: | | 25.05.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 25.05.44–04.10.44 |
| 6th Fleet, Combined Fleet | | 04.10.44–12.01.45 |
| Fate: Missing as of 12.01.45; presumed sunk 13.11.44 by US ships 100 miles WSW of Los Angeles, California (31°55'N, 139°45'E). 114 dead; 0 saved. |
| Removed from Navy List | | 30.04.1945 |
| Commanding Officers: |
| *Cdr Kudo Kaneo (56) | 工藤兼男 | 05.03.44–12.01.45 |
| I-13 伊13 イ13 |
| Type (Class): AM (I-13) |
| Call Sign: |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 04.02.1943 |
| Launched: | | 30.11.1943 |
| Completed: | | 16.12.1944 |
| Service: |
| 6th Fleet | | 16.12.44–30.12.44 |
| SubDiv 1, 6th Fleet | | 30.12.44–02.11.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: Sunk 16.07.45 at 11:40 by USS Lawrence C Taylor (DE-415) 550 miles SE of Yokosuka (34°28'N, 150°55'E). 140 dead; 0 saved. |
| Removed from Navy List | | 10.08.1945 |
| Commanding Officers: |
| *Cdr Ohashi Katsuo (53) | 大橋勝夫 | 10.09.44–16.07.45 |
| I-14 伊14 イ14 |
| Type (Class): AM (I-13) |
| Call Sign: |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 18.05.1944 |
| Launched: | | 14.03.1944 |
| Completed: | | 14.03.1945 |
| Service: |
| SubDiv 1, 6th Fleet | | 14.03.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered. Sunk as target 28.05.46 by USS Bugara (SS-331) off Pearl Harbor (21°13'N, 158°08'W) |
| Removed from Navy List | | 02.09.1945 |
| Commanding Officers: |
| Cdr Shimizu Tsuruzo (58) | 清水鶴造 | 05.11.44–30.11.45 |
| I-15 伊15 イ15 |
| Type (Class): B1 (I-15) |
| Call Sign: JUOD |
| Builder: Kure Navy Yard |
| Ordered under the 3rd Replacement Program (#37): | 1937 |
| Laid Down: | | 25.01.1938 |
| Launched: | | 07.03.1939 |
| Completed: | | 30.07.1940 |
| Service: |
| SubDiv 1, Yokosuka ND (2nd Reserve) | | 15.11.39–15.11.40 |
| SubDiv 1, 1st SubRon, 6th Fleet | | 15.11.40–09.01.42 |
| SubDiv 1, 6th Fleet | | 09.01.42–01.02.42 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 01.02.42–10.11.42 |
| Fate: Sunk 10.11.42 at 10:03 by USS Southard (DMS-10) off San Cristobal (10°13'S, 161°09'E). 91 dead; 0 saved. |
| Removed from Navy List | | 24.12.1942 |
| Commanding Officers: |
| Cdr Oyama Toyojiro (47) | 大山豊次郎 | 01.12.39–20.12.40 |
| *Cdr Ishikawa Nobuo (49) | 石川信雄 | 20.12.40–10.11.42 |
| I-15 (2) 伊15 イ15 |
| Type (Class): C1 (I-15) |
| Call Sign: — |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 03.04.1943 |
| Launched: | | 12.04.1944 |
| Completed: | | — |
| Fate: — |
| I-16 伊16 イ16 |
| Type (Class): C1 (I-16) |
| Call Sign: JUPD: |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 3rd Replacment Program (#44): | 1937 |
| Laid Down: | | 15.09.1937 |
| Launched: | | 28.09.1938 |
| Completed: | | 30.03.1940 |
| Service: |
| 1st Reserve, Yokosuka ND, | | 15.12.38–15.11.39 |
| SubDiv 2, Submarine School, Otake, | | 15.11.39–15.11.40 |
| SubDiv 1, SubRon 1 ,6th Fleet | | 15.11.40–09.01.42 |
| SubDiv 1, 6th Fleet | | 09.01.42–10.03.42 |
| SubDiv 1, 8th SubRon, 6th Fleet | | 10.03.42–04.08.43 |
| SubDiv 1, 1st SubRon, 6th Fleet | | 04.08.42–25.09.43 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 25.09.43–15.01.44 |
| SubDiv 2, 6th Fleet | | 15.01.44–05.03.44 |
| SubDiv 15, 6th Fleet | | 05.03.44–10.10.44 |
| Fate: Sunk 19.05.44 at 13:40 by USS England (DE-635) 140 miles NE Cape Alexander (05°10'S, 158°17'E). 107 dead; 0 saved. |
| Removed from Navy List | | 10.10.1944 |
| Commanding Officers: |
| Cdr Kobayashi Hajime (48) | 小林 一 | 20.09.39–30.07.41 |
| LtCdr Yamada Kaoru (50) | 山田 薫 | 30.07.41–18.12.42 |
| LtCdr Nakamura Shozo (54) | 中村省三 | 18.12.42–15.02.44 |
| *LtCdr Takeuchi Yoshitaka (59) | 竹内義高 | 15.02.44–19.05.44 |
| I-17 伊17 イ17 |
| Type (Class): B1 (I-15) |
| Call Sign: JUQD |
| Builder: Yokosuka Navy Yard |
| Ordered under the 3rd Replacement Program (#38): | 1937 |
| Laid Down: | | 18.04.1938 |
| Launched: | | 19.07.1939 |
| Completed: | | 24.01.1941 |
| Service: |
| SubDiv 1, Yokosuka ND (2nd Reserve) | | 15.11.39–15.11.40 |
| SubDiv 1, 1st SubRon, 6th Fleet | | 15.11.40–09.01.42 |
| SubDiv 1, 6th Fleet | | 09.01.42–01.02.42 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 01.02.42–01.12.43 |
| Fate: Sunk 09.08.43 at 10:00 by HMNZS Tui (T.234) 40 miles SE Noumea (23°26'S, 166°50'E). 97 dead; 7 saved. |
| Removed from Navy List | 01.12.1943 |
| Commanding Officers: |
| Cdr Nishino Kozo (48) | 西野耕三 | 01.06.40–15.07.42 |
| *LtCdr Harada Hakue (52) | 原田毫衛 | 15.07.42–09.08.43 |
| I-18 伊18 イ18 |
| Type (Class): C1 (I-16) |
| Call Sign: JURD |
| Builder: Sasebo Navy Yard |
| Ordered under the 3rd Replacement Program (#45): | 1937 |
| Laid Down: | | 25.08.1937 |
| Launched: | | 12.11.1938 |
| Completed: | | 31.01.1941 |
| Service: |
| SubDiv 2, Submarine School Otake | | 15.11.39–15.11.40 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 15.11.40–01.02.42 |
| SubDiv 1, 6th Fleet | | 01.02.42–10.03.42 |
| SubDiv 1, Sub.Ron.8, 6th Fleet | | 10.03.42–01.04.43 |
| Fate: Sunk 11.02.43 at 12:38 by USS Fletcher (DD-445) in Coral Sea (14°15'S, 161°59'E). 102 dead; 0 saved. |
| Removed from Navy List | | 01.04.1943 |
| Commanding Officers: |
| Cdr Otani Kiyonori (49) | 大谷清教 | 01.07.40–01.12.42 |
| *Cdr Muraoka Tomiichi (52) | 村岡富一 | 01.12.42–11.02.43 |
| I-19 伊19 イ19 |
| Type (Class): B1 (I-15) |
| Call Sign: JUSD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 3rd Replacement Program (#39): | 1937 |
| Laid Down: | | 15.03.1938 |
| Launched: | | 16.09.1939 |
| Completed: | | 28.04.1941 |
| Service: |
| SubDiv 1, Yokosuka ND, (2nd Reserve) | | 15.11.39–15.11.40 |
| SubDiv 2, 1st SubRon, 6th Fleet, | | 15.11.40–15.01.44 |
| SubDiv 2, 6th Fleet | | 15.01.44–30.04.44 |
| Fate: Sunk 25.11.43 at 23:44 by USS Radford (DD-446) in Gilbert Islands (03°10'N, 171°55'E). 105 dead; 0 saved. |
| Removed from Navy List | 30.04.1944 |
| Commanding Officers: |
| LtCdr Narahara Shogo (48) | 楢原省吾 | 31.01.41–15.07.42 |
| Cdr Kinashi Takakazu (51) | 木梨鷹一 | 15.07.42–27.09.43 |
| *LtCdr Kobayashi Shigeo (56) | 小林茂男 | 27.09.43–24.11.43 |
| I-20 伊20 イ20 |
| Type (Class): C1 (I-16) |
| Call Sign: JUTD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 3rd Replacement Program (#46): | 1937 |
| Laid Down: | | 16.11.1937 |
| Launched: | | 25.01.1939 |
| Completed: | | 29.09.1940 |
| Service: |
| SubDiv 2, Submarine School, Otake, | | 15.11.39–15.11.40 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 15.11.40–01.02.42 |
| SubDiv 1, 6th Fleet | | 01.02.42–10.03.42 |
| SubDiv 1, 8th SubRon, 6th Fleet | | 10.03.42–04.08.43 |
| SubDiv 1, 1st SubRon, 6th Fleet | | 04.08.43–25.09.43 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 25.09.43–01.12.43 |
| Fate: Sunk 03.09.43 at 21:00 by USS Ellet (DD-398) 150 miles NE Espirtu Santo (13°10'S, 165°28'E). 101 dead; 0 saved. |
| Removed from Navy List | 01.12.1943 |
| Commanding Officers: |
| Cdr Yamada Takashi (49) | 山田 隆 | 25.03.40–15.09.42 |
| Cdr Yoshimura Iwao (51) | 吉村 巌 | 15.09.42–18.12.42 |
| Cdr Kudo Kaneo (56) | 工藤兼男 | 18.12.42–02.06.43 |
| *LtCdr Otsuka Hiroshi (56) | 大塚 范 | 02.06.43–03.09.43 |
| I-21 伊21 イ21 |
| Type (Class): B1 (I-15) |
| Call Sign: JUUD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered under the 3rd Replacement Program (#40): | 1937 |
| Laid Down: | | 07.01.1939 |
| Launched: | | 24.02.1940 |
| Completed: | | 15.07.1941 |
| Service: |
| SubDiv 3, 1st SubRon, 6th Fleet | | 15.07.41–09.01.42 |
| SubDiv 3, 6th Fleet | | 09.01.42–10.03.42 |
| SubDiv 3, 8th SubRon, 6th Fleet | | 10.03.42–15.12.42 |
| SubDiv 1, 8th SubRon, 6th Fleet | | 15.12.42–25.09.43 |
| SubDiv 1, 1st SubRon, 6th Fleet | | 25.09.43–15.01.44 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 14.01.44–30.04.44 |
| Fate: Sunk 29.11.43 at 21:57 by Air Group 35 from USS Chennago (CVE-28) 30 miles SW of Tarawa. 101 dead; 0 saved. |
| Removed from Navy List | | 30.04.44 |
| Commanding Officers: |
| Cdr Irie Tatsushi (51) | 入江 達 | 03.01.41–31.10.41 |
| Cdr Matsumura Kanji (50) | 松村寛治 | 31.10.41–16.03.43 |
| *Cdr Inada Hiroshi (51) | 稲田 洋 | 16.03.43–25.11.43 |
| I-22 伊22 イ22 |
| Type (Class): C1 (I-16) |
| Call Sign: JUVD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 3rd Replacement Program (#47): | 1937 |
| Laid Down: | | 25.11.1937 |
| Launched: | | 23.02.1938 |
| Completed: | | 10.03.1941 |
| Service: |
| SubDiv 3, 1st SubRon, 6th Fleet | | 15.07.41–09.01.42 |
| SubDiv 3, 6th Fleet | | 09.01.42–10.03.42 |
| SubDiv 3, 8th SubRon, 6th Fleet | | 10.03.42–15.12.42 |
| Fate: Missing as of 05.10.42 W of Malaita, Solomons. 100 dead; 0 saved. |
| Removed from Navy List | | 15.12.1942 |
| Commanding Officers: |
| LtCdr Fujii Akiyoshi (49) | 藤井明義 | 20.09.40–15.11.40 |
| Cdr Ageta Kiyoi (50) | 揚田清猪 | 15.11.40–10.07.42 |
| *LtCdr Narusawa Sennao (52) | 成沢千直 | 10.07.42–15.10.42 |
| I-23 伊23 イ23 |
| Type (Class): B1 (I-15) |
| Call Sign: JUWD |
| Builder: Yokosuka Navy Yard |
| Ordered under the 3rd Replacement Program (#41): | 1937 |
| Laid Down: | | 28.01.1938 |
| Launched: | | 24.11.1939 |
| Completed: | | 27.09.1941 |
| SubDiv 3,1st SubRon, 6th Fleet | | 27.09.41–09.01.42 |
| SubDiv 3,6th Fleet | | 09.01.42–01.02.42 |
| SubDiv 4,1st SubRon, 6th Fleet | | 01.02.42–10.04.42 |
| Fate: Missing as of 14.02.42 off Hawaii; presumed sunk 28.02.1942 S of Oahu, Hawaii. 96 dead; 0 saved. |
| Removed from Navy List | | 10.04.1942 |
| Commanding Officers: |
| *LtCdr Shibata Genichi (51) | 柴田源一 | 15.05.41–28.02.42 |
| I-24 伊24 イ24 |
| Type (Class): C1 (I-16) |
| Call Sign: JUXD |
| Builder: Sasebo Navy Yard |
| Ordered under the 3rd Replacement Program (#48): | 1937 |
| Laid Down: | | 05.12.1938 |
| Launched: | | 12.11.1939 |
| Completed: | | 31.10.1941 |
| Service: |
| SubDiv 4, 1st SubRon, 6th Fleet | | 31.10.41–01.02.42 |
| SubDiv 3, 6th Fleet | | 01.02.42–10.03.42 |
| SubDiv 3, 8th SubRon, 6th Fleet | | 10.03.42–15.12.42 |
| SubDiv 1, 8th SubRon, 6th Fleet | | 15.12.42–01.08.43 |
| Fate: Sunk 11.06.43 by USS PC-487 40 miles NE Kiska, Alaska (53°16'N, 174°24'E). 104 dead; 0 saved. |
| Removed from Navy List | | 01.08.1943 |
| Commanding Officers: |
| *Cdr Hanabusa Hiroshi (51) | 花房博志 | 01.07.41–11.06.43 |
| I-25 伊25 イ25 |
| Type (Class): B1 (I-15) |
| Call Sign: JUYD |
| Builder: Mitsubishi, Nagasaki |
| Ordered under the 3rd Replacement Program (#42): | 1937 |
| Laid Down: | | 03.02.1939 |
| Launched: | | 08.06.1940 |
| Completed: | | 15.10.1941 |
| Service: |
| Yokosuka ND | | 15.10.41–31.10.41 |
| SubDiv 4, 1st SubRon, 6th Fleet | | 31.10.41–10.08.42 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 10.08.42–01.12.43 |
| Fate: Sunk 25.08.43 by USS Patterson (DD-392) (13°10'S, 165°27'E). 100 dead; 0 saved. |
| Removed from Navy List | | 01.12.1943 |
| Commanding Officers: |
| Cdr Tagami Akiji (51) | 田上明次 | 28.04.41–07.07.43 |
| Cdr Shichiji Tsuneo (49) | 七字恒雄 | 07.07.43–15.07.43 |
| *Cdr Kohiga Masaru (53) | 小比賀 勝 | 15.07.43–25.08.43 |
| I-26 伊26 イ26 |
| Type (Class): B1 (I-15) |
| Call Sign: JUZD |
| Builder: Kure Navy Yard |
| Ordered under the 4th Replacement Program (#139): | 1939 |
| Laid Down: | | 06.07.1936 |
| Launched: | | 10.04.1940 |
| Completed: | | 06.11.1941 |
| SubDiv 4, 1st SubRon, 6th Fleet | | 06.11.41–10.08.42 |
| SubDiv 2, 1st SubRon, 6th Fleet | | 10.08.42–25.11.43 |
| 8th SubRon, 6th Fleet | | 25.11.43–20.06.44 |
| SubDiv 15, 6th Fleet | | 20.06.44–10.03.45 |
| Fate: 26.10.44 sunk at 02:45 by USS Coolbaugh (DE-217) off Samar, Philippines. ? dead; 0 saved. |
| Removed from Navy List | 10.03.1945 |
| Commanding Officers: |
| Cdr Hasegawa Minoru (51) | 長谷川 稔 | 06.11.41–18.09.43 |
| LtCdr Kusaka Toshio (53) | 日下敏夫 | 18.09.43–01.08.44 |
| *LtCdr Nishiuchi Shoichi (60) | 西内正一 | 01.08.44–26.10.44 |
| I-27 伊27 イ27 |
| Type (Class): B1 (I-15) |
| Call Sign: JVAD |
| Builder: Sasebo Navy Yard |
| Ordered under the 4th Replacement Program (#140): | 1939 |
| Laid Down: | | 05.07.1939 |
| Launched: | | 16.06.1940 |
| Completed: | | 24.02.1942 |
| Service: |
| SubDiv 14, 6th Fleet | | 24.02.42–10.03.42 |
| SubDiv 14, 8th SubRon, 6th Fleet | | 10.03.42–15.12.43 |
| 8th SubRon, 6th Fleet | | 15.12.43–10.07.44 |
| Fate: 12.02.44 sunk by HMS Petard (G.56) 60 miles NW Addu Atoll (01°25'N, 72°22'E). 99 dead; 1 saved. |
| Removed from Navy List | | 10.07.1944 |
| Commanding Officers: |
| Cdr Yoshimura Iwao (51) | 吉村 巌 | 31.10.41–15.08.42 |
| LtCdr Kitamura Soshichi (55) | 北村惣七 | 15.08.42–23.02.43 |
| *LtCdr Fukumura Toshiaki (54) | 福村利明 | 23.02.43–12.02.44 |
| I-28 伊28 イ28 |
| Type (Class): B1 (I-15) |
| Call Sign: JVBD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 4th Replacement Program (#141): | 1939 |
| Laid Down: | | 25.09.1939 |
| Launched: | | 18.12.1940 |
| Completed: | | 26.02.1942 |
| Service: |
| 6th Fleet | | 06.02.42–24.02.42 |
| SubDiv 14, 6th Fleet | | 24.02.42–10.03.42 |
| SubDiv 14, 8th SubRon, 6th Fleet | | 10.03.42–15.06.42 |
| Fate: 17.05.42 sunk at 11:01 by USS Tautog (SS-199) 2 miles W of Royalist Reef (06°30'N, 152°00'E). 88 dead; 0 saved. |
| Removed from Navy List | | 15.06.1942 |
| Commanding Officers: |
| *LtCdr Yajima Yasuo (51) | 矢島安雄 | 20.11.41–17.05.42 |
| I-29 伊29 イ29 |
| Type (Class): B1 (I-15) |
| Call Sign: JVCD |
| Builder: Yokosuka Navy Yard |
| Ordered under the 4th Replacement Program (#142): | 1939 |
| Laid Down: | | 20.09.1939 |
| Launched: | | 29.09.1940 |
| Completed: | | 27.02.1942 |
| SubDiv 14, 6th Fleet | | 27.02.42–10.03.42 |
| SubDiv 14, 8th SubRon, 6th Fleet | | 10.03.42–15.09.43 |
| 8th SubRon, 6th Fleet | | 15.09.43–05.08.44 |
| SubDiv 15, 6th Fleet [*] | | 05.08.44–10.10.44 |
| [*] Transferred before loss known. |
| Fate: 29.07.44 sunk by USS Sawfish (SS-276) in Luzon Strait (20°10'N, 121°55'E). 105 dead; 1 saved. |
| Removed from Navy List | | 10.10.1944 |
| Commanding Officers: |
| LtCdr Izu Junichi (51) | 伊豆寿市 | 27.02.42–10.10.43 |
| *Cdr Kinoshi Takahazu (51) | 木梨鷹一 | 10.10.43–29.07.44 |
| I-30 伊30 イ30 |
| Type (Class): B1 (I-15) |
| Call Sign: JVDD |
| Builder: Kure Navy Yard |
| Ordered under the 4th Replacement Program (#143): | 1939 |
| Laid Down: | | 07.06.1939 |
| Launched: | | 17.09.1940 |
| Completed: | | 28.02.1942 |
| Service: |
| 6th Fleet | | 28.02.42–10.03.42 |
| SubDiv 14, 8th SubRon, 6th Fleet | | 10.03.42–10.11.42 |
| Fate: 13.11.42 sunk by mine 3 miles off Singapore. 13 dead; 96 saved. |
| Removed from Navy List | | 10.11.1942 |
| Commanding Officers: |
| Cdr Endo Shinobu (52) | 遠藤 忍 | 25.02.42–13.10.42 |
| I-31 伊31 イ31 |
| Type (Class): B1 (I-15) |
| Call Sign: JVED |
| Builder: Yokosuka Navy Yard |
| Ordered under the 4th Replacement Program (#144): | 1939 |
| Laid Down: | | 06.12.1939 |
| Launched: | | 31.03.1941 |
| Completed: | | 20.05.1942 |
| Service: |
| SubDiv 15, 1st SubRon, 6th Fleet | | 30.05.42–01.08.43 |
| Fate: 13.05.43 sunk by USS Edwards (DD-619) 5 miles NE of Chichagof Bay, Attu. 95 dead; 0 saved. |
| Removed from Navy List | | 01.08.1943 |
| Commanding Officers: |
| *LtCdr Inoue Tadakane (51) | 井上規矩 | 10.03.42–13.05.43 |
| I-32 伊32 イ32 |
| Type (Class): B1 (I-15) |
| Call Sign: JVFD |
| Builder: Sasebo Navy Yard |
| Ordered under the 4th Replacement Program (#145): | 1939 |
| Laid Down: | | 20.01.1940 |
| Launched: | | 27.12.1940 |
| Completed: | | 26.04.1942 |
| Service: |
| Kure ND | | 26.04.42–30.05.42 |
| SubDiv 15, 1st SubRon, 6th Fleet | | 30.05.42–15.01.44 |
| SubDiv 15, 6th Fleet | | 15.01.44–10.06.44 |
| Fate: 24.03.44 sunk by USS PC-1135, 50 miles S of Wotje. 106 dead; 0 saved. |
| Removed from Navy List | | 10.06.1944 |
| Commanding Officers: |
| Cdr Ikezawa Masayuki (52) | 池沢政幸 | 10.03.42–01.11.42 |
| LtCdr Hori Takeo (50) | 堀 武雄 | 01.11.42–10.01.44 |
| *LtCdr Imamoto Masayuki (58) | 井元正之 | 10.01.44–24.03.44 |
| I-33 伊33 イ33 |
| Type (Class): B1 (I-15) |
| Call Sign: JVGD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 4th Replacement Program (#146): | 1939 |
| Laid Down: | | 21.02.1940 |
| Launched: | | 01.05.1941 |
| Completed: | | 10.06.1942 |
| Service: |
| SubDiv 15, 1st SubRon, 6th Fleet | | 10.06.42–10.11.42 |
| Kure Navy Yard | | 10.11.42–01.06.44 |
| Kure Navy Yard, under repair | | 09.42–05.44 |
| 11th SubRon, 6th Fleet | | 01.06.44–10.07.44 |
| Fate: Sunk 14.06.44 in accident in Iyo Wan (33°40'N, 132°30'E). 102 dead; 2 saved. Wreck raised and scrapped 1953. |
| Removed from Navy List | | 10.07.1944 |
| Commanding Officers: |
| Cdr Ogawa Tsunayoshi (50) | 小川綱吉 | 01.04.42–09.01.43 |
| *LtCdr Wada Mutsuo (61) | 和田睦雄 | 04.05.44–13.06.44 |
| I-34 伊34 イ34 |
| Type (Class): B1 (I-15) |
| Call Sign: JVHD |
| Builder: Sasebo Navy Yard |
| Ordered under the 4th Replacement Program (#147): | 1939 |
| Laid Down: | | 09.01.1941 |
| Launched: | | 24.09.1941 |
| Completed: | | 31.08.1942 |
| Service: |
| Kure SubRon, Kure ND | | 01.09.42–15.11.42 |
| 5th Fleet | | 15.11.42–01.04.43 |
| SubDiv 15, 1st SubRon, 6th Fleet | | 01.04.43–15.09.43 |
| 8th SubRon, 6th Fleet | | 15.09.43–01.01.44 |
| Fate: Sunk 13.11.43 at 07:30 by HMS Taurus (P.339) 30 miles S of Penang (05°26'N, 100°06'E). 84 dead; 13 saved. |
| Removed from Navy List | | 01.01.1944 |
| Commanding Officers: |
| Cdr Tonozuka Kinzo (50) | 殿塚謹三 | 20.05.42–20.03.43 |
| *Cdr Irie Tatsushi (51) | 入江 達 | 20.03.43–11.11.43 |
| I-35 伊35 イ35 |
| Type (Class): B1 (I-15) |
| Call Sign: JVID: |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 4th Replacement Program (#148): | 1939 |
| Laid Down: | | 02.09.1940 |
| Launched: | | 24.09.1941 |
| Completed: | | 31.08.1942 |
| Service: |
| Kure SubRon, Kure ND | | 01.09.42–15.11.42 |
| 5th Fleet | | 01.09.42–01.04.43 |
| SubDiv 15, 1st SubRon, 6th Fleet | | 01.04.43–30.04.44 |
| Fate: Sunk 22.11.43 at 17:27 by USS Frazier (DD-607) W of Tarawa (01°22'N, 172°47'E). 92 dead; 3 saved. |
| Removed from Navy List | | 30.04.1944 |
| Commanding Officers: |
| *LtCdr Yamamoto Hideo (56) | 山本秀男 | 23.05.42–22.11.43 |
| I-36 伊36 イ36 |
| Type (Class): B1 (I-15) |
| Call Sign: JVJD: |
| Builder: Yokosuka Navy Yard |
| Ordered under the 4th Replacement Program (#149): | 1939 |
| Laid Down: | | 04.12.1940 |
| Launched: | | 01.11.1941 |
| Completed: | | 30.09.1942 |
| Service: |
| Kure SubRon, Kure ND | | 30.09.42–15.12.42 |
| SubDiv 15, 1st SubRon, 6th Fleet | | 15.12.42–15.01.44 |
| SubDiv 15, 6th Fleet | | 15.01.44–30.11.45 |
| Fate: 02.09.45 surrendered at Kure. Scuttled 01.04.46 off Goto Is. (32°37'N, 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| Cdr Inaba Michimune (51) | 稲葉通宗 | 01.06.42–15.02.44 |
| Resv LtCdr Teramoto Iwao | 寺本巌 | 15.02.44–05.02.45 |
| LtCdr Sugamasa Tetsuaki (65) | 菅昌徹昭 | 05.02.45–02.09.45 |
| I-37 伊37 イ37 |
| Type (Class): B1 (I-15) |
| Call Sign: JVKD |
| Builder: Kure Navy Yard |
| Ordered under the 4th Replacement Program (#150): | 1939 |
| Laid Down: | | 27.01.1940 |
| Launched: | | 22.10.1941 |
| Completed: | | 10.03.1943 |
| Service: |
| Kure SubRon, Kure ND | | 10.03.43–01.04.43 |
| 11th SubRon, 1st Fleet | | 01.04.43–03.05.43 |
| SubDiv 14, 8th SubRon, 6th Fleet | | 23.05.43–15.12.43 |
| 8th SubRon, 6th Fleet | | 15.12.43–10.09.44 |
| SubDiv 15, 1st SubRon, 6th Fleet | | 10.09.44–19.11.44 |
| Fate: Sunk 19.11.44 by USS Conklin (DE-439) 600 miles E of the Philippines (08°07'N, 134°16'E). 106 dead; 0 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| Cdr Otani Kiyonori (49) | 大谷清教 | 3.43–27.12.43 |
| Cdr Nakagawa Hajime (50) | 中川 肇 | 27.12.43–10.05.44 |
| Cdr Kono Masamichi (52) | 河野昌通 | 10.05.44–11.10.44 |
| *LtCdr Kamimoto Nobuo (56) | 神本信雄 | 11.10.44–19.11.44 |
| I-38 伊38 イ38 |
| Type (Class): B1 (I-15) |
| Call Sign: |
| Builder: Sasebo Navy Yard |
| Ordered under the 4th Replacement Program (#151): | 1939 |
| Laid Down: | | 19.08.1941 |
| Launched: | | 15.04.1942 |
| Completed: | | 31.01.1943 |
| Service: |
| Kure SubRon, Kure ND | | 31.01.43–01.04.43 |
| 11th SubRon, 1st Fleet | | 01.04.43–30.04.43 |
| SubDiv 15, 1st SubRon, 6th Fleet | | 30.04.43–15.01.44 |
| SubDiv 15, 6th Fleet | | 15.01.44–13.11.44 |
| Fate: Sunk 13.11.44 by USS Nicholas (DD-449) S of Yap (08°04'N, 138°03'E). 110 dead; 0 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| Cdr Ankyo Eitaro (50) | 安久栄太郎 | 05.12.42–14.03.44 |
| LtCdr Toyama Zenshin (59) | 当山全信 | 14.03.44–18.04.44 |
| *LtCdr Shimose Yoshiro (58) | 下瀬吉郎 | 18.04.44–13.11.44 |
| I-39 伊39 イ39 |
| Type (Class): B1 (I-15) |
| Call Sign: |
| Builder: Sasebo Navy Yard |
| Ordered under the 4th Replacement Program (#152): | 1939 |
| Laid Down: | | 19.06.1941 |
| Launched: | | 15.04.1942 |
| Completed: | | 22.04.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 22.04.43–20.07.43 |
| SubDiv 14, 8th SubRon, 6th Fleet | | 20.07.43–26.11.43 |
| Fate: Sunk 26.11.43 by USS Boyd (DD-544) W of Makin (03°10'N, 171°55'E). 96 dead; 0 saved. |
| Removed from Navy List | date |
| Commanding Officers: |
| *LtCdr Tanaka Makio (52) | 田中万喜夫 | 04.43–26.11.43 |
| I-40 伊40 イ40 |
| Type (Class): B2 (I-40) |
| Call Sign: |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 18.03.1942 |
| Launched: | | 10.11.1942 |
| Completed: | | 31.07.43 |
| Service: |
| 11th SubRon, 1st Fleet | | 31.07.43–31.10.43 |
| Fate: Missing as of 23.11.43. 97 dead; 0 saved. |
| Removed from Navy List | date |
| Commanding Officers: |
| *LtCdr Watanabe Katsuji (55) | 渡辺勝次 | 07.43–31.10.43 |
| I-41 伊41 イ41 |
| Type (Class): B2 (I-40) |
| Call Sign: |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 18.03.1942 |
| Launched: | | 10.11.1942 |
| Completed: | | 18.09.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 18.09.43–25.11.43 |
| 11th SubRon, 6th Fleet | | 25.11.43–20.12.43 |
| SubDiv 15, 1st SubRon, 6th Fleet | | 20.12.43–15.01.44 |
| SubDiv 15, 6th Fleet | | 15.01.44–18.11.44 |
| Fate: Sunk 18.11.44 by USS Lawrence C Taylor (DE-415) E of Samar (12°44'N, 130°42'E). ? dead; 0 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| LtCdr Yoshimatsu Tamori (55) | 吉松田守 | 9.43–15.12.43 |
| *LtCdr Itakura Mitsumi (61) | 板倉光馬 | 15.12.43–18.11.44 |
| I-42 伊42 イ42 |
| Type (Class): B2 (I-40) |
| Call Sign: |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 18.03.1942 |
| Launched: | | 10.11.1942 |
| Completed: | | 03.11.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 03.11.43–25.11.43 |
| 11th SubRon, 6th Fleet | | 25.11.43–31.01.44 |
| SubDiv 15, 6th Fleet | | 31.01.44–23.03.44 |
| Fate: Sunk 23.03.44 at 23:24 by USS Tunny (SS-282) 6 miles SW of Palau (06°40'N, 134°03'E). 102 dead; 0 saved. |
| Removed from Navy List | | 30.04.1944 |
| Commanding Officers: |
| *Cdr Ogawa Tsunayoshi (50) | 小川綱吉 | 11.43–23.03.44 |
| I-43 伊43 イ43 |
| Type (Class): B2 (I-40) |
| Call Sign: |
| Builder: Sasebo Navy Yard |
| Ordered: | ? |
| Laid Down: | | 27.04.1942 |
| Launched: | | 28.10.1942 |
| Completed: | | 05.11.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 05.11.43–25.11.43 |
| 11th SubRon, 6th Fleet | | 25.11.43–11.02.44 |
| SubDiv 15, 6th Fleet | | 11.02.44– |
| Fate: Sunk 15.02.44 at 22:24 by USS Aspero (SS-309) 280 miles ESE of Guam (10°23'N, 150°23'E). 166 dead; 0 saved. |
| Removed from Navy List | | 30.04.1944 |
| Commanding Officers: |
| *Cdr Endo Shinobu (52) | 遠藤 忍 | 11.43–15.02.44 |
| I-44 伊44 イ44 |
| Type (Class): B2 (I-40) |
| Call Sign: |
| Builder: Yokosuka Navy Yard |
| Ordered: | ? |
| Laid Down: | | 11.06.1942 |
| Launched: | | 05.03.1943 |
| Completed: | | 31.01.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 31.01.44–28.04.44 |
| SubDiv 15, 6th Fleet | | 28.04.44–29.04.45 |
| Fate: Sunk 29.04.45 by aircraft of USS Tulagi (CVE-72) 220 miles SE of Okinawa (24°15'N, 131°16'E). 134 dead; 0 saved. |
| Removed from Navy List | | 10.06.1945 |
| Commanding Officers: |
| Cdr Hasegawa Minoru (51) | 長谷川 稔 | 31.01.44–16.09.44 |
| LtCdr Kawaguchi Genbei (66) | 川口源兵衛 | 16.09.44–09.03.45 |
| *LtCdr Masuzawa Seiji (65) | 増沢清司 | 09.03.45–29.04.45 |
| I-45 伊45 イ45 |
| Type (Class): B2 (I-40) |
| Call Sign: |
| Builder: Sasebo Navy Yard |
| Ordered: | ? |
| Laid Down: | | 15.07.1942 |
| Launched: | | 06.03.1943 |
| Completed: | | 28.12.1943 |
| Service: |
| 11th SubRon, 6th Fleet | | 28.12.43–25.03.44 |
| SubDiv 15, 6th Fleet | | 25.03.44–28.10.44 |
| Fate: Sunk 28.10.44 by USS Whitehurst (DE-634) E of Sarigao Island (10°10'N, 127°28'E). 104 dead; 0 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| Cdr Tagami Akiji (51) | 田上明次 | 12.43–10.06.44 |
| Cdr Sekido Yoshimitsu (57) | 関戸好蜜 | 10.06.44–05.09.44 |
| *LtCdr Kawashima Mamoru (64) | 河島 守 | 05.09.44–28.10.44 |
| I-46 伊46 イ46 |
| Type (Class): C2 (I-46) |
| Type (Class): I-46 |
| Call Sign: |
| Builder: Sasebo Navy Yard |
| Ordered: | ? |
| Laid Down: | | 21.11.1942 |
| Launched: | | 03.06.1943 |
| Completed: | | 29.02.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 29.02.44–30.09.44 |
| SubDiv 15, 6th Fleet | | 30.09.44–28.10.44 |
| Fate: Sunk 28.10.44 at 14:14 by USS Helm (DD-388)E of Layte (10°58'N, 127°13'E). 112 dead; 0 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| *LtCdr Yamaguchi Kosaburo (59) | 山口幸三郎 | 2.44–28.10.44 |
| I-47 伊47 イ47 |
| Type (Class): C2 (I-46) |
| Call Sign: |
| Builder: Sasebo Navy Yard |
| Ordered: | ? |
| Laid Down: | | 21.11.1942 |
| Launched: | | 29.09.1943 |
| Completed: | | 10.07.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 10.07.44–08.10.44 |
| SubDiv 15, 6th Fleet | | 08.10.44–02.09.45 |
| Fate: 02.09.45 surrendered. Scuttled 01.04.46 off Goto Is. (32°37'N, 129°17'E). |
| Removed from Navy List | 30.11.45 |
| Commanding Officers: |
| LtCdr Orita Zenji (59) | 折田善次 | 4.44–5.45 |
| LtCdr Suzuki Shokichi (62) | 鈴木正吉 | 5.45–08.45 |
| I-48 伊48 イ48 |
| Type (Class): C2 (I-46) |
| Call Sign: |
| Builder: Sasebo Navy Yard |
| Ordered | | ?: |
| Laid Down: | | 19.06.1943 |
| Launched: | | 12.12.1943 |
| Completed: | | 05.09.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 05.09.44–07.12.44 |
| SubDiv 15, 6th Fleet | | 07.12.44–23.01.45 |
| Fate: Sunk 23.01.45 at 09:36 by USS Conklin (DE-439) 17 miles N of Yap (09°55'N, 138°17'E). 126 dead; ? saved. |
| Removed from Navy List | | 10.05.1945 |
| Commanding Officers: |
| *LtCdr Toyama Zenshin (59) | 当山全信 | 9.44–23.01.45 |
| I-52 伊52 イ52 |
| Type (Class): C3 (I-52) |
| Call Sign: |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 18.03.1942 |
| Launched: | | 10.11.1942 |
| Completed: | | 18.12.1943 |
| Service: |
| 11th SubRon, 6th Fleet | | 28.12.43–10.03.44 |
| SubDiv 11, 8th SubRon, 6th Fleet | | 10.03.44–24.06.44 |
| Fate: Sunk 24.06.44 at 01:00 by US aircraft W of Cape Verde Islands (15°16'N, 39°55W). 112 dead; 0 saved. |
| Removed from Navy List | | 10.12.1944 |
| Commanding Officers: |
| *Cdr Uno Kameo (53) | 宇野亀雄 | 12.43–24.06.44 |
| I-53 伊53 イ53 |
| Type (Class): C3 (I-52) |
| Call Sign: |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 15.05.1942 |
| Launched: | | 24.12.1943 |
| Completed: | | 20.02.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 20.02.44–10.06.44 |
| SubDiv 15, 6th Fleet | | 10.06.44–02.09.45 |
| Fate: 02.09.45 surrendered. Scuttled 01.04.46 by USS Nereus (AS-17) off Goto Is. (32°37'N,129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Toyomasu Seihachi (59) | 豊増清八 | 14.02.44–01.02.45 |
| LtCdr Oba Saichi (62) | 大場佐一 | 01.02.45–08.45 |
| I-54 伊54 イ54 |
| Type (Class): B3 (I-54) |
| Call Sign: |
| Ordered: | ? |
| Builder: Yokosuka Kaigin Kosho |
| Laid Down: | | 01.07.1942 |
| Launched: | | 04.05.1943 |
| Completed: | | 01.03.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 31.03.44–10.07.44 |
| SubDiv 15, 6th Fleet | | 10.07.44–24.10.44 |
| Fate: 28.10.44 sunk by USS Gridley (DD-380) and USS Helm (DD-388); 125miles NE Suriago, Philippines (10°56'N;127°13'E). 107 dead; 0 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| Cdr Ohashi Katsuo (53) | 大橋勝夫 | 3.44–31.08.44 |
| *LtCdr Nakayama Denshichi (61) | 中山伝七 | 31.08.44–24.10.44 |
| I-55 伊55 イ55 |
| Type (Class): C3 (I-52) |
| Call Sign: |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 15.06.1942 |
| Launched: | | 30.04.1943 |
| Completed: | | 20.04.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 20.04.44–10.07.44 |
| SubDiv 15, 6th Fleet | | 10.07.44–28.07.44 |
| Fate: Sunk 14.07.44 at 08:04 by USS William C Miller (DE-259) 78 miles off Saipan (15°18'N, 144°26'E). 112 dead; 0 saved. |
| Removed from Navy List | | 10.10.1944 |
| Commanding Officers: |
| *LtCdr Izutsu Monshiro (57) | 井筒紋四郎 | 4.44–14.07.44 |
| I-56 伊56 イ56 |
| Type (Class): B3 (I-54) |
| Call Sign: |
| Builder: Yokosuka Navy Yard |
| Ordered: | ? |
| Laid Down: | | 29.09.1942 |
| Launched: | | 30.06.1943 |
| Completed: | | 08.06.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 08.06.44–20.09.44 |
| SubDiv 15, 6th Fleet | | 20.09.44–10.06.45 |
| Fate: Sunk 18.04.45 by US destroyers 160 miles E of Okinawa (26°42'N, 130°38'E). 116 dead; 0 saved. |
| Removed from Navy List | | 10.06.1945 |
| Commanding Officers: |
| LtCdr Morinaga Masahiko (59) | 森永正彦 | 30.04.44–03.02.45 |
| *LtCdr Shoda Keiji (62) | 正田啓治 | 03.02.45–18.04.45 |
| I-58 伊58 イ58 |
| Type (Class): B3 (I-54) |
| Call Sign: |
| Builder:Yokosuka Navy Yard |
| Ordered: | ? |
| Laid Down: | | 26.12.1942 |
| Launched: | | 09.10.1943 |
| Completed: | | 07.09.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 07.09.44–04.12.44 |
| SubDiv 15, 6th Fleet | | 04.12.44–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 01.04.46 by USS Nereus (AS-17) off Goto Is. (32°37'N, 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Hashimoto Mochitsura (59) | 橋本以行 | 15.06.44–30.11.45 |
| I-121 伊121 イ121 |
| Type (Class): KD3B (I-121) |
| Call Sign: JZQD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 20.10.1924 |
| Launched: | | 20.03.1926 |
| Completed: | | 31.03.1927 |
| Service: |
| SubDiv 13, SubRon 6, 3rd Fleet | | 01.05.41–10.03.42 |
| SubDiv 13, SubRon 6, Combined Fleet | | 10.03.42–10.04.42 |
| SubDiv 13, 6th Fleet | | 10.04.42–14.07.42 |
| SubDiv 13, 7th SubRon, 8th Fleet | | 14.07.42–24.12.42 |
| SubDiv 13, 7th SubRon, 8th Fleet, SE Area Fleet | | 24.12.42–15.04.43 |
| SubDiv 13, 7th SubRon, SE Area Fleet | | 15.04.43–31.05.43 |
| 7th SubRon, SE Area Fleet | | 31.05.43–25.08.43 |
| SubDiv 18, Kure ND | | 25.08.43–01.12.43 |
| SubDiv 18, Kure SubRon, Kure ND | | 01.12.43–31.01.44 |
| SubDiv 19, Kure SubRon, Kure ND | | 31.01.44–20.04.45 |
| SubDiv 33, Kure SubRon, Kure ND | | 20.04.45–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 30.04.46 in Wakasa Bay. |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Kobayashi Saburo (37) | 小林三郎 | 31.03.27–15.11.27 |
| LtCdr Nakamura Motoji (39) | 中邑元司 | 15.11.27–10.12.28 |
| LtCdr Sato Shiro (43) | 佐藤四郎 | 10.12.28–15.11.30 |
| LtCdr Kijima Moritsugu (44) | 貴島盛次 | 15.11.30–01.12.31 |
| LtCdr Mizuguchi Hyoe (46) | 水口兵衛 | 01.12.31–01.12.32 |
| LtCdr Goto Hiroshi (48) | 後藤 汎 | 01.12.32–15.11.33 |
| LtCdr Takatsuka Tadao (49) | 高塚忠夫 | 15.11.33–15.11.34 |
| LtCdr Tsuzuki Noboru (48) | 都築 登 | 15.11.34–03.07.35 |
| LtCdr Fujii Akiyoshi (49) | 藤井明義 | 03.07.35–15.12.36 |
| Reserve |
| LtCdr Yamada Kaoru (50) | 山田 薫 | 20.03.37–19.03.38 |
| LtCdr Koike Ryusuke (52) | 小池竜介 | 19.03.38–30.07.38 |
| LtCdr Hanabusa Hiroshi (51) | 花房博志 | 30.07.38–20.03.39 |
| LtCdr Kusaka Toshio (53) | 日下敏夫 | 20.03.39–15.08.39 |
| LtCdr Otani Kiyonori (49) | 大谷清教 | 15.08.39–30.10.40 |
| LtCdr Inaba Michimune (51) | 稲葉通宗 | 30.10.40–31.01.41 |
| LtCdr Kono Masamichi (52) | 河野昌通 | 31.01.41–02.06.41 |
| Cdr Endo Shinobu (52) | 遠藤 忍 | 02.06.41–31.01.42 |
| Cdr Fujimori Yasuo (56) | 藤森康男 | 31.01.42–14.10.42 |
| LtCdr Shimada Takeo (59) | 島田武夫 | 14.10.42–19.08.43 |
| LtCdr Watanabe Masaki (63) | 渡辺正樹 | 19.08.43–22.02.44 |
| Cdr Inaba Michimune (51) | 稲葉通宗 | 22.02.44–09.01.45 |
| Lt Ueno Norihiro (66) | 上野忠弘 | 09.01.45–08.45 |
| I-122 伊122 イ122 | |
| Type (Class): KRS (I-121) |
| Call Sign: JZRD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 28.02.1925 |
| Launched: | | 08.11.1926 |
| Completed: | | 28.10.1927 |
| Service: |
| SubDiv 13, SubRon 6, 3rd Fleet | | 01.05.41–10.03.42 |
| SubDiv 13, SubRon 6, Combined Fleet | | 10.03.42–10.04.42 |
| SubDiv 13, 6th Fleet | | 10.04.42–14.07.42 |
| SubDiv 13, 7th SubRon, 8th Fleet | | 14.07.42–24.12.42 |
| SubDiv 13, 7th SubRon, 8th Fleet, SE Area Fleet | | 24.12.42–15.04.43 |
| SubDiv 13, 7th SubRon, SE Area Fleet | | 15.04.43–31.05.43 |
| 7th SubRon, SE Area Fleet | | 31.05.43–25.08.43 |
| SubDiv 18, Kure ND | | 25.08.43–01.12.43 |
| SubDiv 18, Kure SubRon, Kure ND | | 01.12.43–31.01.44 |
| SubDiv 19, Kure SubRon, Kure ND | | 31.01.44–20.04.45 |
| SubDiv 33, Kure SubRon, Kure ND | | 20.04.45–10.06.45 |
| Fate: Sunk 10.06.45 at 11:20 by USS Skate (SS-305) 6 miles SE Rokugo Misaki (37°29'N, 139°25'E). ? dead; 0 saved. |
| Removed from Navy List | | 02.09.1945 |
| Commanding Officers: |
| LtCdr Kousokabe Yuzuru (38) | 香宗我部 譲 | 28.10.27–10.12.28 |
| LtCdr Funaki Shigetoshi (43) | 舟木重利 | 10.12.28–01.11.29 |
| LtCdr Nakajima Chihiro (43) | 中嶋千尋 | 01.11.29–15.11.30 |
| LtCdr Okushima Tsunesaburo (44) | 奥島章三郎 | 15.11.30–01.11.31 |
| ? | | 01.11.31–01.11.32 |
| LtCdr Abe Nobuo (42) | 阿部信夫 | 01.11.32–16.03.33 |
| Reserve | | 16.03.33–15.11.33 |
| LtCdr Mizobatane Sadaichi (46) | 溝畠定一 | 15.11.33–15.11.35 |
| LtCdr Fujii Akiyoshi (49) | 藤井明義 | 15.11.35–14.02.36 |
| Reserve | | 14.02.36–30.06.36 |
| LtCdr Otani Kiyonori (49) | 大谷清教 | 30.06.36–01.12.36 |
| Lt Hasegawa Minoru (51) | 長谷川 稔 | 01.12.36–20.03.37 |
| LtCdr Yoshimura Iwao (51) | 吉村 巌 | 20.03.37–20.03.39 |
| LtCdr Yoshitome Zenji (52) | 吉留 善 | 20.03.39–20.03.40 |
| LtCdr Koike Ryusuke (52) | 小池竜介 | 20.03.40–15.10.40 |
| LtCdr Iura Shoujiro (51) | 井浦祥二郎 | 15.10.40–28.04.41 |
| Cdr Miyazaki Takeji (46) | 宮崎武治 | 28.04.41–15.10.41 |
| LtCdr Utsuki Hidejiro (52) | 宇都木秀次郎 | 15.10.41–31.01.42 |
| LtCdr Norita Sadatoshi (57) | 乗田貞敏 | 31.01.42–19.11.42 |
| LtCdr Rikihisa Matsuji (58) | カ久松次 | 19.11.42–31.07.43 |
| LtCdr Shinohara Shigeo (62) | 篠原茂夫 | 31.07.43–14.02.44 |
| Capt Hamano Motoichi (47) | 浜野元一 | 14.02.44–29.04.44 |
| LtCdr Irisawa Mitsuteru (63) | 入沢三輝 | 29.04.44–30.08.44 |
| LtCdr Yamane Gon (61) | 山根 権 | 30.08.44–23.10.44 |
| Cdr Kono Masamichi (52) | 河野昌通 | 23.10.44–09.01.45 |
| Lt Nakajima Kazato (66) | 中島万里 | 09.01.45–24.03.45 |
| *Lt Mihara Sosaku (69) | 三原荘作 | 24.03.45–10.06.45 |
| I-123 伊123 イ123 | |
| Type (Class): KRS (I-121) |
| Call Sign: JZSD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 12.06.1925 |
| Launched: | | 19.03.1927 |
| Completed: | | 28.04.1928 |
| Service: |
| SubDiv 9, SubRon 6, 3rd Fleet | | 01.05.41–25.02.42 |
| SubDiv 13, SubRon 6, 3rd Fleet | | 25.02.42–10.03.42 |
| SubDiv 13, SubRon 6, Combined Fleet | | 10.03.42–10.04.42 |
| SubDiv 13, 6th Fleet | | 10.04.42–14.07.42 |
| SubDiv 13, 7th SubRon, 8th Fleet | | 14.07.42–29.08.42 |
| Fate: Sunk 29.08.42 by USS Gamble (DM-15) 60 miles E of Savo Island (09°21'S, 160°43'E). 71 dead; 0 saved. |
| Removed from Navy List | | 05.10.1942 |
| Commanding Officers: |
| LtCdr Tsujimura Takehisa (42) | 辻村武久 | 28.04.28–09.03.29 |
| LtCdr Ito Jotaro (42) | 伊藤尉太郎 | 10.03.29–09.06.30 |
| LtCdr Oda Tamekiyo (43) | 小田為清 | 10.06.30–01.12.31 |
| LtCdr Otake Toshio (45) | 大竹寿雄 | 01.12.31–15.11.33 |
| LtCdr Oyama Toyojiro (47) | 大山豊次郎 | 15.11.33–15.11.34 |
| LtCdr Katsumi Motoi (49) | 勝見 基 | 15.11.34–25.11.35 |
| Reserve | | 25.11.35–01.12.36 |
| LtCdr Mizobatane Sadaichi (46) | 溝畠定一 | 26.12.35–01.12.36 |
| LtCdr Ankyo Eitaro (50) | 安久栄太郎 | 01.12.36–19.03.38 |
| LtCdr Izu Jinichi (51) | 伊豆寿市 | 19.03.38–15.11.38 |
| LtCdr Yamada Kaoru (50) | 山田 薫 | 15.11.38–20.11.39 |
| LtCdr Tonozuka Kinzo (50) | 殿塚謹三 | 20.11.39–05.11.40 |
| LtCdr Maruyama Hanzo (52) | 丸山範三 | 05.11.40–05.09.41 |
| LtCdr Ueno Toshitake (56) | 上野利武 | 05.09.41–29.06.42 |
| *LtCdr Nakai Makoto (58) | 中井 誠 | 29.06.42–29.08.42 |
| I-124 伊124 イ124 |
| Type (Class): KRS (I-121) |
| Call Sign: JZTD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | ? |
| Laid Down: | | 17.04.1926 |
| Launched: | | 12.12.1927 |
| Completed: | | 10.12.1928 |
| Service: |
| SubDiv 9, SubRon 6, 3rd Fleet | | 01.05.41–20.01.42 |
| Fate: Sunk 20.01.42 at 13:56 by HMAS Deloraine W of Darwin (12°7'S, 130°06'E). |
| Removed from Navy List | | 25.02.1942 |
| Commanding Officers: |
| LtCdr Harada Kaku | 原田 覚 | 10.12.28–31.05.29 |
| LtCdr Kato Yoshiro (43) | 加藤興四郎 | 01.06.29–01.12.31 |
| LtCdr Takezaki Kaoru (45) | 竹崎 馨 | 01.12.31–03.03.32 |
| Cdr Okura Tomesaburo (43) | 大倉留三郎 | 03.03.32–15.11.33 |
| LtCdr Matsumura Midori (48) | 松村 翠 | 15.11.33–01.06.34 |
| LtCdr Fujimoto Den (48) | 藤本 伝 | 01.06.34–15.11.34 |
| LtCdr Otani Kiyonori (49) | 大谷清教 | 15.11.34–03.07.35 |
| LtCdr Kayabara Yasuchika (49) | 栢原保親 | 03.07.35–15.11.35 |
| LtCdr Uchino Shinji (49) | 内野信二 | 15.11.35–15.02.36 |
| LtCdr Koizumi Kiichi (49) | 小泉麒一 | 15.02.36–20.03.37 |
| LtCdr Yamamoto Akira (49) | 山本 皓 | 20.03.37–31.07.37 |
| LtCdr Ageta Kiyoi (50) | 揚田清猪 | 31.07.37–15.11.37 |
| LtCdr Shibata Genichi (51) | 柴田源一 | 15.11.37–24.10.39 |
| LtCdr Kurokawa Hideyuki (54) | 黒川英幸 | 24.10.39–24.04.40 |
| LtCdr Izu Junichi (51) | 伊豆寿市 | 24.04.40–30.10.40 |
| LtCdr Ishikawa Nobuo (49) | 石川信雄 | 30.10.40–31.01.41 |
| *LtCdr Kishigami Koichi (52) | 岸上孝一 | 31.01.41–20.01.42 |
|
| I-152 伊152 イ152 | |
| Type (Class): KD2 (I-152) |
| Call Sign: JVZD |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 14.02.1922 |
| Launched: | | 12.06.1922 |
| Completed as I-52: | | 20.05.1925 |
| Renumbered as I-152 | | 20.05.1942 |
| Service: |
| Kure ND | | 20.05.25–01.12.25 |
| SubDiv17, 2nd SubRon, 2nd Fleet | | 01.12.25–10.12.28 |
| SubDiv17, Kure ND | | 10.12.28–30.11.29 |
| SubDiv17, Kure Defence Div, Kure ND | | 30.11.29–01.12.30 |
| SubDiv17, Kure ND | | 01.12.30–01.10.32 |
| SubDiv17, Kure Defence Div, Kure ND | | 01.10.32–01.01.33 |
| SubDiv17, Kure ND | | 01.01.33–15.11.35 |
| Kure ND | | 15.11.35–15.12.38 |
| Engineering School, Maizuru ND | | 15.12.38–15.11.39 |
| 1st Reserve, Engineering School, Maizuru ND | | 15.11.39–08.12.41 |
| Kure ND | | 08.12.41–14.07.42 |
| Reserve; Kure ND | | 14.07.42–01.08.42 |
| Kure Submarine School (Hulk 配管 No. 14) | | 01.08.42–1946 |
| Fate: 02.09.45 surrendered. Scrapped 1948. |
| Removed from Navy List | | 01.08.1942 |
| Commanding Officers: |
| LtCdr Matsuno Seizo (36) | 松野省三 | 12.09.24–01.12.25 |
| LtCdr Higuchi Shuichiro (37) | 樋口修一郎 | 01.12.25–01.12.27 |
| ? | | ? |
| LtCdr Komazawa Katsumi (42) | 駒沢克己 | 01.12.28–30.11.29 |
| LtCdr Fukuzawa Tsunekichi | 福沢常吉 | 30.11.29–01.12.30 |
| ? | | ? |
| LtCdr Fujii Akiyoshi (49) | 藤井明義 | 15.11.37–15.12.38 |
| LtCdr Sekido Yoshimitsu (57) | 関戸好蜜 | 15.12.38–? |
| LtCdr Sekido Yoshimitsu (57) | 関戸好蜜 | 01.12.41–30.06.42 |
| LtCdr Hashimoto Mochitsura [59] | 橋本以行 | 30.06.42–20.07.42 |
| LtCdr Ota Takeshi [55] | 大田 武 | 20.07.42–01.08.42 |
| I-153 伊153 イ153 |
| Type (Class): KD3A (I-153) |
| Call Sign: JWAD |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 01.04.1924 |
| Launched: | | 05.08.1925 |
| Completed as I-53: | | 30.03.1927 |
| Renumbered as I-153 | | 20.05.1942 |
| Service: |
| SubDiv 18, 4th SubRon, Combined Fleet | | 15.11.39–10.03.42 |
| SubDiv 18, Kure ND | | 10.03.42–01.12.43 |
| SubDiv 18, Kure SubRon, Kure ND | | 01.12.43–31.10.44 |
| Otake Sub School | | 31.01.44–02.09.45 |
| Fate: 02.09.45 surrendered. Scrapped 1948. |
| Removed from Navy List | | 20.11.1945 |
| Commanding Officers: |
| Cdr Takasu Sanjiro (37) | 高須三二郎 | 06.12.26–30.11.27 |
| LtCdr Sato Tsutomu (40) | 佐藤 勉 | 30.11.27–10.12.28 |
| LtCdr Hirano Rokuzo (41) | 平野六三 | 10.12.28–01.11.30 |
| LtCdr Hayashi Kiyosuke (43) | 林 清亮 | 01.11.30–01.12.31 |
| LtCdr Ishizaki Noboru (42) | 石崎 昇 | 01.12.31–15.11.32 |
| LtCdr Kato Yoshiro (43) | 加藤興四郎 | 15.11.32–15.11.34 |
| LtCdr Minamizato Katsuji (48) | 南里勝次 | 15.11.34–15.11.35 |
| LtCdr Shimizu Taro (48) | 清水太郎 | 15.11.35–01.12.36 |
| LtCdr Mizobatane Sadaichi (46) | 溝畠定一 | 01.12.36–01.12.37 |
| LtCdr Sano Takao (50) | 佐野孝夫 | 01.12.37–19.03.38 |
| LtCdr Nakamura Otsuji (52) | 中村乙二 | 19.03.38–30.07.38 |
| LtCdr Ankyo Eitaro (50) | 安久栄太郎 | 30.07.38–20.11.39 |
| LtCdr Irie Tatsushi (51) | 入江 達 | 20.11.39–31.01.41 |
| LtCdr Nakamura Shozo (54) | 中村省三 | 31.01.41–22.05.42 |
| LtCdr Izutsu Monshiro (57) | 井筒紋四郎 | 22.05.42–14.12.42 |
| LtCdr Shimizu Tsuruzo (58) | 清水鶴造 | 14.12.42–24.05.43 |
| LtCdr Wada Mutsuo (61) | 和田睦雄 | 24.05.43–24.06.43 |
| LtCdr Imamoto Masayuki (58) | 井元正之 | 24.06.43–09.01.44 |
| LtCdr Hori Takeo (50) | 堀 武雄 | 09.01.44–15.09.44 |
| Reserve | | 14.09.44–02.09.45 |
| I-154 伊154 イ154 |
| Type (Class): KD3A (I-153) |
| Call Sign: JWBD |
| Builder: Sasebo Navy Yard |
| Ordered: | ? |
| Laid Down: | | 15.11.1924 |
| Launched: | | 15.03.1926 |
| Completed as I-54: | | 15.12.1927 |
| Renumbered as I-154 | | 20.05.1942 |
| Service: |
| SubDiv 18, 4th SubRon, Combined Fleet | | 15.11.39–10.03.42 |
| SubDiv 18, Kure ND | | 10.03.42–01.12.43 |
| SubDiv 18, Kure SubRon, Kure ND | | 01.12.43–31.01.44 |
| Otake Sub School | | 31.01.44–02.09.45 |
| Fate: 02.09.45 surrendered. Scuttled 05.46 in Iyo Nada. |
| Removed from Navy List | | 20.11.1945 |
| Commanding Officers: |
| LtCdr Takatsuka Seigo (38) | 高塚省吾 | 10.08.27–15.05.29 |
| LtCdr Owada Noboru (44) | 大和田 昇 | 15.05.29–01.11.30 |
| LtCdr Okura Tomasaboro (43) | 大倉留三郎 | 01.11.30–02.03.32 |
| ? | | ? |
| LtCdr Fujimoto Den (48) | 藤本 伝 | 15.11.34–20.04.37 |
| LtCdr Narahara Shogo (48) | 楢原省吾 | 20.04.37–18.03.38 |
| LtCdr Tanaka Makio (52) | 田中万喜夫 | 19.03.38–30.07.38 |
| LtCdr Hasegawa Minoru (51) | 長谷川 稔 | 30.07.38–20.10.39 |
| LtCdr Shibata Genichi (51) | 柴田源一 | 20.10.39–15.08.41 |
| LtCdr Taoka Kiyoshi (55) | 田岡 清 | 15.08.41–31.10.41 |
| LtCdr Kobayashi Shigeo (56) | 小林茂男 | 31.10.41–04.06.42 |
| LtCdr Sakamoto Eiichi (57) | 坂本栄一 | 04.06.42–14.10.42 |
| LtCdr Yuasa Hiroshi (59) | 湯浅 弘 | 14.10.42–15.03.43 |
| LtCdr Yamaguchi Kosaburo (59) | 山口幸三郎 | 15.03.43–11.05.43 |
| Capt Hamano Motoichi (47) | 浜野元一 | 30.11.43–30.01.44 |
| Reserve | | 30.01.44–02.09.45 |
| I-155 伊155 イ155 |
| Type (Class): KD3A (I-153) |
| Call Sign: JWCD: |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 01.04.1924 |
| Launched: | | 02.09.1925 |
| Completed as I-55: | | 05.09.1927 |
| Renumbered as I-155 | | 20.05.1942 |
| Service: |
| SubDiv 18, 4th SubRon, Combined Fleet | | 15.11.39–10.03.42 |
| SubDiv 18, Kure ND | | 10.03.42–01.12.43 |
| SubDiv 18, Kure SubRon, Kure ND | | 01.12.43–31.01.44 |
| SubDiv 19, Kure SubRon, Kure ND | | 31.01.44–20.04.45 |
| SubDiv 33, Kure SubRon, Kure ND | | 20.04.45–20.07.45 |
| Kure ND | | 20.07.45–20.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 05.46 in Iyo Nada. |
| Removed from Navy List | | 20.11.1945 |
| Commanding Officers: |
| LtCdr Minowa Nakai (38) | 蓑輸中五 | 05.09.27–01.12.27 |
| LtCdr Hiraoka Kumeichi (39) | 平岡粂一 | 01.12.27–09.12.28 |
| LtCdr Nabeshima Shunsaku (42) | 鍋島俊策 | 10.12.28–15.11.29 |
| LtCdr Ishizaki Noboru (42) | 石崎 昇 | 15.11.29–01.12.30 |
| LtCdr Abe Nobuo (42) | 阿部信夫 | 01.12.30–02.32 |
| Reserve | | 02.32–20.02.34 |
| LtCdr Shiino Kotaro (45) [?] | [?] | 20.02.34–10.05.35 |
| LtCdr Tamaki Tomejiro (45) | 玉木留次郎 | 10.05.35–01.12.36 |
| LtCdr Yamada Takashi (49) | 山田 隆 | 01.12.36–09.12.37 |
| LtCdr Tonozuka Kinzo(50) | 殿塚謹三 | 09.12.37–20.11.39 |
| LtCdr Tagami Akiji (51) | 田上明次 | 20.11.39–28.04.41 |
| LtCdr Nakajima Seiji (54) | 中島清次 | 28.04.41–24.03.42 |
| Cdr Kudo Kaneo (56) | 工藤兼男 | 24.03.42–09.12.42 |
| Capt Hamano Motoichi (47) | 浜野元一 | 09.12.42–09.01.43 |
| Cdr Kono Masamichi (52) | 河野昌通 | 09.01.43–29.04.44 |
| LtCdr Hayakawa Norimasa (64) | 早川尋匡 | 29.04.44–19.07.45 |
| Reserve | | 20.07.45–02.09.45 |
| I-156 伊156…イ156 |
| Type (Class): KD3B (I-156) |
| Call Sign: JWDD |
| Builder: Kure Navy Yard |
| Ordered: | 1923 |
| Laid Down: | | 03.11.1926 |
| Launched: | | 23.03.1928 |
| Completed as I-56: | | 31.03.1929 |
| Renumbered as I-156 | | 20.05.1942 |
| Service: |
| SubDiv 19, 4th SubRon, Combined Fleet | | 15.11.39–10.03.42 |
| SubDiv 19, 5th SubRon, Combined Fleet | | 10.03.42–10.07.42 |
| SubDiv 19, Kure ND | | 10.07.42–01.12.43 |
| SubDiv 19, Kure SubRon, Kure ND | | 01.12.43–20.04.45 |
| SubDiv 34, 6th Fleet | | 20.04.45–15.08.45 |
| SubDiv 15, 6th Fleet | | 15.08.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division Four | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered at Sasebo. Scuttled 01.04.46 by USS Nereus (AS-17) off Goto Is. (32°37N', 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Koda Takero (41) | 古宇田武郎 | 10.09.28–05.11.29 |
| Cdr Yoshitomi Setsuzo (39) | 吉富説三 | 05.11.29–01.12.30 |
| LtCdr Ishizaki Noboru (42) | 石崎 昇 | 01.12.30–01.12.31 |
| LtCdr Hattori Kunio (47) | 服部邦男 | 01.12.31–01.06.32 |
| LtCdr Okushima Tsunesaburo (44) | 奥島章三郎 | 01.06.32–01.11.32 |
| LtCdr Kume Ikuji (46) | 久米幾次 | 01.11.32–22.10.34 |
| LtCdr Okushima Tsunesaburo(44) | 奥島章三郎 | 22.10.34–26.12.35 |
| LtCdr Nishino Kozo (48) | 西野耕三 | 26.12.35–01.12.37 |
| Cdr Iwagami Hidetoshi (46) | 岩上英寿 | 01.12.37–29.06.38 |
| LtCdr Mizuguchi Hyoe (46) | 水口兵衛 | 29.06.38–15.12.38 |
| LtCdr Hatanaka Sumihiko (49) | 畑中純彦 | 15.12.38–20.11.39 |
| LtCdr Yamada Kaoru (50) | 山田 薫 | 20.11.39–31.07.41 |
| LtCdr Ohashi Katsuo (53) | 大橋勝夫 | 31.07.41–29.06.42 |
| LtCdr Orita Zenji (59) | 折田善次 | 29.06.42–19.07.42 |
| LtCdr Sekido Yoshimitsu (57) | 関戸好蜜 | 19.07.42–14.10.42 |
| LtCdr Yonehara Minoru (59) | 米原 実 | 14.10.42–15.03.43 |
| LtCdr Teramoto Iwao (59) [?] | [?] | 15.03.43–30.01.44 |
| Cdr Kamimoto Nobuo (56) | 神本信雄 | 30.01.44–10.10.44 |
| Cdr Kono Masamichi (52) | 河野昌通 | 10.10.44–23.10.44 |
| LtCdr Yamane Gon (61) | 山根 権 | 23.10.44–30.11.45 |
| I-157 伊157 イ157 |
| Type (Class): KD3B (I-156) |
| Call Sign: JWED |
| Builder: Kure Navy Yard |
| Ordered: | 1923 |
| Laid Down: | | 28.07.1927 |
| Launched: | | 01.10.1928 |
| Completed as I-57: | | 24.12.1929 |
| Renumbered as I-157: | | 20.05.1942 |
| Service: |
| SubDiv 19, 4th SubRon, Combined Fleet | | 15.11.39–10.03.42 |
| SubDiv 19, 5th SubRon, Combined Fleet | | 10.03.42–10.07.42 |
| SubDiv 19, Kure ND | | 10.07.42–01.12.43 |
| SubDiv 19, Kure SubRon, Kure ND | | 01.12.43–20.04.45 |
| SubDiv 34, 6th Fleet | | 20.04.45–15.08.45 |
| SubDiv 15, 6th Fleet | | 15.08.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division Four | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 01.04.46 by USS Nereus (AS-17) off Goto Is. (32°37N', 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Hashimoto Aiji (39) | 橋本愛次 | 04.12.29–20.06.30 |
| LtCdr Ito Jotaro (42) | 伊藤尉太郎 | 20.06.30–14.11.31 |
| LtCdr Saito Eisho (42) | 斎藤栄章 | 14.11.31–01.06.32 |
| LtCdr Nakajima Chihiro (43) | 中嶋千尋 | 01.06.32–04.10.32 |
| LtCdr Nakaoka Nobuki (45) | 中岡信喜 | 05.10.32–15.11.33 |
| LtCdr Tamaki Tomejiro (45) | 玉木留次郎 | 15.11.33–10.05.35 |
| Reserve | | 10.05.35–03.07.35 |
| LtCdr Kobayashi Hajime (48) | 小林 一 | 03.07.35–15.11.35 |
| LtCdr Takahashi Chojuro (49) | 高橋 長十郎 | 15.11.35–01.12.36 |
| Cdr Okamoto Yoshisuke (47) | 岡本義助 | 01.12.36–01.12.37 |
| Cdr Shimizu Taro (48) | 清水太郎 | 01.12.37–15.12.38 |
| Cdr Narahara Shogo (48) | 楢原省吾 | 15.12.38–20.02.39 |
| Reserve | | 20.02.39–01.09.39 |
| LtCdr Yoshimura Iwao (51) | 吉村 巌 | 01.09.39–31.01.41 |
| LtCdr Kitamura Soshichi (55) | 北村惣七 | 31.01.41–31.10.41 |
| LtCdr Nakajima Sakae (56) | 中島 栄 | 31.10.41–14.10.42 |
| LtCdr Saeki Takeo (59) | 佐伯 卓夫 | 14.10.42–09.11.42 |
| Capt Nishino Kozo (48) | 西野耕三 | 09.11.42–31.01.43 |
| LtCdr Kohiga Masaru (53) | 小比賀 勝 | 31.01.43–06.07.43 |
| Capt Kayabara Yasuchika (49) | 栢原保親 | 06.07.43–31.01.44 |
| Cdr Hori Takeo (50) | 堀 武雄 | 31.01.44–24.02.44 |
| *Cdr Nakamura Shozo (54) | 中村省三 | 24.02.44–06.08.45 |
| LtCdr Araki Asakichi (64) | 荒木浅吉 | 08.08.45–30.11.45 |
| I-158 伊158 イ158 |
| Type (Class): KD3A (I-153) |
| Call Sign: JWFD |
| Builder: Yokosuka Navy Yard: |
| Ordered: | ? |
| Laid Down: | | 03.12.1924 |
| Launched: | | 03.10.1925 |
| Completed as I-58: | | 15.05.1928 |
| Renumbered as I-158: | | 20.05.1942 |
| Service: |
| SubDiv 19, 4th SubRon, Combined Fleet | | 15.11.39–10.03.42 |
| SubDiv 19, 5th SubRon, Combined Fleet | | 10.03.42–10.07.42 |
| SubDiv 19, Kure ND | | 10.07.42–01.12.43 |
| SubDiv 19, Kure SubRon, Kure ND | | 01.12.43–20.04.45 |
| SubDiv 34, 6th Fleet | | 20.04.45–15.08.45 |
| SubDiv 15, 6th Fleet | | 15.08.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 01.04.46 by USS Nereus (AS-17) off Goto Is. (32°37N', 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Sekimoto Orinosuke (38) | 関本織之助 | 15.05.38–01.11.29 |
| LtCdr Akiyama Katsuzo (40) | 秋山勝三 | 01.11.29–15.11.30 |
| LtCdr Ito Jotaro (42) | 伊藤尉太郎 | 15.11.30–01.12.30 |
| LtCdr Fukuzawa Tsunekichi (41) | 福沢常吉 | 01.12.30–14.11.31 |
| LtCdr Nakajima Chihiro (43) | 中嶋千尋 | 15.11.31–01.12.32 |
| LtCdr Imazato Hiroshi (45) | 今里 博 | 01.12.32–27.12.32 |
| Reserve | | 27.12.32–21.01.33 |
| LtCdr Miyazaki Takeji (46) | 宮崎武治 | 21.01.33–22.10.34 |
| LtCdr Tamaki Tomejiro (45) | 玉木留次郎 | 22.10.34–10.05.35 |
| Reserve | | 10.05.35–03.07.35 |
| LtCdr Yamada Takashi (49) | 山田 隆 | 03.07.35–01.12.36 |
| Cdr Hamano Motoichi (47) | 浜野元一 | 01.12.36–15.10.37 |
| Cdr Miyazaki Takeji (46) | 宮崎武治 | 15.10.37–15.12.38 |
| Cdr Narahara Shogo (48) | 楢原省吾 | 15.12.38–30.10.40 |
| LtCdr Nakagawa Hajime (50) | 中川 肇 | 30.10.40–31.10.41 |
| LtCdr Kitamura Soshichi (55) | 北村惣七 | 31.10.41–24.07.42 |
| LtCdr Otsuka Hiroshi (56) | 大塚 范 | 24.07.42–24.11.42 |
| LtCdr Morinaga Masahiko (59) | 森永正彦 | 24.11.42–15.03.43 |
| LtCdr Hashimoto Mochitsura (59) | 橋本以行 | 15.03.43–24.07.43 |
| LtCdr Takeuchi Yoshitaka (59) | 竹内義高 | 24.07.43–19.01.44 |
| LtCdr Arai Atsushi (64) | 荒井 淳 | 19.01.44–29.04.44 |
| LtCdr Masuzawa Seiji (65) | 増沢清司 | 29.04.44–13.10.44 |
| LtCdr Go Yasuo (66) | 郷 康夫 | 13.10.44–04.02.45 |
| Lt Tateyama Takeharu (68) | 館山武裕 | 04.02.45–30.11.45 |
| I-159 伊159 イ159 |
| Type (Class): KD3B (I-156) |
| Call Sign: JWGD |
| Builder: Yokosuka Navy Yard |
| Ordered: | 1923 |
| Laid Down: | | 25.03.1927 |
| Launched: | | 25.03.1929 |
| Completed as I.59: | | 10.03.1930 |
| Renumbered as I-159: | | 20.05.1942 |
| Service: |
| SubDiv 28, 5th SubRon, Combined Fleet | | 15.11.40–10.04.42 |
| SubDiv 19, 5th SubRon, Combined Fleet | | 10.04.42–10.07.42 |
| SubDiv 19, Kure ND | | 10.07.42–01.12.43 |
| SubDiv 19, Kure SubRon, Kure ND | | 01.12.43–20.04.45 |
| SubDiv 34, 6th Fleet | | 20.04.45–15.08.45 |
| SubDiv 15, 6th Fleet | | 15.08.45–02.09.45 |
| post-war US Navy's Japanese Submarine Division Four | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered at Sasebo. Scuttled 01.04.46 off Goto Is. (32°37N', 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Tsuruoka Nobumichi (43) | 鶴岡信道 | 19.10.29–01.12.31 |
| LtCdr Funaki Shigetoshi (43) | 舟木重利 | 01.12.31–15.01.33 |
| Reserve | | 15.01.33–21.10.35 |
| LtCdr Okamoto Yoshisuke (47) | 岡本義助 | 21.10.35–01.12.36 |
| LtCdr Shimizu Taro (48) | 清水太郎 | 01.12.36–01.12.37 |
| LtCdr Nishino Kozo (48) | 西野耕三 | 01.12.37–01.11.38 |
| LtCdr Ageta Kiyoi (50) | 揚田清猪 | 01.11.38–20.11.39 |
| LtCdr Minamizato Katsuji (48) | 南里勝次 | 20.11.38–26.07.40 |
| LtCdr Endo Shinobu (52) | 遠藤 忍 | 26.07.40–02.06.41 |
| Reserve | | 02.06.41–31.10.41 |
| Cdr Yoshimatsu Tamori (55) | 吉松田守 | 31.10.41–09.11.42 |
| Capt Fukumura Toshiaki (54) | 福村利明 | 09.11.42–14.02.43 |
| LtCdr Morinaga Masahiko (59) | 森永正彦 | 14.02.43–15.03.43 |
| Capt Kayabara Yasuchika (49) | 栢原保親 | 15.03.43–17.05.43 |
| LtCdr Toyomasu Seihachi (59) | 豊増清八 | 17.05.43–14.02.44 |
| LtCdr Shoda Keiji (62) | 正田啓治 | 14.02.44–23.02.44 |
| LtCdr Kimura Masuo (63) | 木村正男 | 23.02.44–04.06.44 |
| Capt Hamano Motoichi (47) | 浜野元一 | 04.06.44–19.07.44 |
| Capt Fujimoto Den (48) | 藤本 伝 | 19.07.44–14.09.44 |
| LtCdr Miyake Tokio (66) | 三宅辰夫 | 14.09.44–30.11.45 |
| I-60 伊60 イ60 |
| Type (Class): KD3B (I-156) |
| Call Sign: JWHD: |
| Builder: Sasebo Navy Yard |
| Ordered: | 1923 |
| Laid Down: | | 10.10.1927 |
| Launched: | | 29.04.1929 |
| Completed: | | 25.12.1929 |
| Service: |
| SubDiv 28, 5th SubRon, Combined Fleet | | 15.11.40–17.01.42 |
| Fate: Sunk 17.01.42 by HMS Jupiter 25 miles NNW of Krakatoa. 85 dead; 2 saved. |
| Removed from Navy List | | 10.03.1942 |
| Commanding Officers: |
| LtCdr Hayashi Kiyosuke (43) | 林 清亮 | 20.12.29–01.12.30 |
| LtCdr Shimamoto Hisagoro (44) | 島本久五郎 | 01.12.30–30.11.31 |
| LtCdr Kijima Moritsugu (44) | 貴島盛次 | 01.12.31–15.11.33 |
| Reserve | | 15.11.33–01.12.35 |
| LtCdr Okamoto Yoshisuke (47) | 岡本義助 | 01.12.35–30.11.36 |
| LtCdr Otani Kiyonori (49) | 大谷清教 | 30.11.36–15.12.38 |
| LtCdr Nakagawa Hajime (50) | 中川 肇 | 15.12.38–09.03.39 |
| LtCdr Yamada Takashi (49) | 山田 隆 | 10.03.39–30.11.39 |
| LtCdr Koike Ryusuke (52) | 小池竜介 | 01.12.39–20.03.40 |
| LtCdr Hanabusa Hiroshi (51) | 花房博志 | 20.03.40–01.07.41 |
| LtCdr Kono Masamichi (52) | 河野昌通 | 01.07.41–31.10.41 |
| *LtCdr Hasagawa Shun (57) | 長谷川 唆 | 31.10.41–17.01.42 |
| I-162 伊162 イ162 |
| Type (Class): KD4 (I-162) |
| Call Sign: JWJD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered: | 1923 |
| Laid Down: | | 20.04.1927 |
| Launched: | | 29.11.1928 |
| Completed as I-62: | | 24.04.1930 |
| Renumbered as I-162: | | 20.05.1942 |
| Service: |
| SubDiv 29, 5th SubRon, Combined Fleet | | 15.11.40–10.03.42 |
| SubDiv 28, 5th SubRon, Combined Fleet | | 10.03.42–10.04.42 |
| SubDiv 30, 5th SubRon, Combined Fleet | | 10.04.42–10.07.42 |
| SubDiv 30, SW Area Fleet | | 10.07.42–01.01.44 |
| SubDiv 30, 8th SubRon, 6th Fleet | | 01.01.44–25.03.44 |
| Kure SubRon, Kure ND | | 25.03.44–01.07.44 |
| SubDiv 19, Kure SubRon, Kure ND | | 01.07.44–01.04.45 |
| SubDiv 34, 6th Fleet | | 01.04.45–15.08.45 |
| SubDiv 15, 6th Fleet | | 15.08.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered at Sasebo. Scuttled 01.04.46 off Goto Is. (32°37N', 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Uozumi Jisaku (42) | 魚住治策 | 24.04.30–01.12.31 |
| LtCdr Kato Yoshiro (43) | 加藤興四郎 | 01.12.31–15.11.32 |
| LtCdr Hattori Kunio (47) | 服部邦男 | 15.11.32–25.05.35 |
| LtCdr Okamoto Yoshisuke (47) | 岡本義助 | 25.05.35–20.10.35 |
| LtCdr Otake Toshio (45) | 大竹寿雄 | 21.10.35–15.02.36 |
| LtCdr Fujii Akiyoshi (49) | 藤井明義 | 15.02.36–09.04.36 |
| LtCdr Fukaya Sokichi (46) | 深谷惣吉 | 10.04.36–01.12.36 |
| LtCdr Kobayashi Hajime (48) | 小林 一 | 01.12.36–01.12.37 |
| LtCdr Kato Ryonosuke (48) | 加藤良之助 | 01.12.37–01.11.38 |
| LtCdr Nishino Kozo (48) | 西野耕三 | 01.11.38–15.11.39 |
| Reserve | | 15.11.39–30.10.40 |
| LtCdr Izu Junichi (51) | 伊豆寿市 | 30.10.40–01.07.41 |
| LtCdr Kinashi Takakazu (51) | 木梨鷹一 | 01.07.41–29.06.42 |
| LtCdr Shimose Yoshiro (58) | 下瀬吉郎 | 29.06.42–11.05.43 |
| LtCdr Doi Mareshige (60) | 土居誉重 | 11.05.43–29.04.44 |
| LtCdr Kawashima Mamoru (64) | 河島 守 | 30.04.44–04.09.44 |
| LtCdr Oba Saichi (62) | 大場佐一 | 04.09.44–09.01.45 |
| LtCdr Taniura Hideo (65) | 谷浦英男 | 09.01.45–30.11.45 |
| I-164 伊164 イ164 |
| Type (Class): KD4 (I-162) |
| Call Sign: JWLD |
| Builder: Kure Navy Yard |
| Ordered: | 1923 |
| Laid Down: | | 27.03.1928 |
| Launched: | | 05.10.1929 |
| Completed as I-64: | | 30.08.1930 |
| Renumbered as I-164: | | 20.05.1942 |
| Service: |
| SubDiv 29, 5th SubRon, Combined Fleet | | 15.11.40–10.03.42 |
| SubDiv 30, 5th SubRon, Combined Fleet | | 10.03.42–17.05.42 |
| Fate: 17.05.42 by USS Triton (SS-201) 230 miles SE of Kagoshima (29°25'N, 134°09'E). 81 dead; 0 saved. |
| Removed from Navy List | | 14.07.1942 |
| Commanding Officers: |
| LtCdr Komazawa Katsumi (42) | 駒沢克己 | 10.04.30–01.12.32 |
| LtCdr Fujitani Ataka (46) | 藤谷安宅 | 01.12.32–15.11.33 |
| LtCdr Otake Toshio (45) | 大竹寿雄 | 15.11.33–15.02.36 |
| LtCdr Fujii Akiyoshi (49) | 藤井明義 | 15.02.36–15.11.37 |
| LtCdr Tonozuka Kinzo (50) | 殿塚謹三 | 15.11.37–09.12.37 |
| LtCdr Yamada Takashi (49) | 山田 隆 | 09.12.37–10.03.39 |
| Reserve | | 10.03.39–30.10.40 |
| LtCdr Ogawa Tsunayoshi (50) | 小川綱吉 | 30.10.40–31.03.42 |
| *LtCdr Niina Yoshio (56) | 新名嘉雄 | 31.03.42–17.05.42 |
| I-165 伊165 イ165 |
| Type (Class): KD5 (I-165) |
| Call Sign: JWMD |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 19.12.1929 |
| Launched: | | 02.06.1931 |
| Completed as I-65: | | 01.12.1932 |
| Renumbered as I-165: | | 20.05.1942 |
| Service: |
| SubDiv 30, 5th SubRon, Combined Fleet | | 15.11.40–10.07.42 |
| SubDiv 30, SW Area Fleet | | 10.07.42–01.01.44 |
| SubDiv 30, 8th SubRon, 6th Fleet | | 01.01.44–25.03.44 |
| 8th SubRon, 6th Fleet | | 25.03.44–15.12.44 |
| SubDiv 19, Kure SubRon, Kure ND | | 15.12.44–01.04.45 |
| SubDiv 34, 6th Fleet | | 01.04.45–27.06.45 |
| Fate: Sunk 27.06.45 at 12:47 by VPB-142 (15°28'N, 153°39'E). 106 dead; 0 saved. |
| Removed from Navy List | | 02.09.1945 |
| Commanding Officers: |
| LtCdr Sasaki Hankyu (45) | 佐々木半九 | 05.04.32–15.11.34 |
| Reserve | | 15.11.34–25.11.36 |
| LtCdr Uchino Shinji (49) | 内野信二 | 25.11.36–01.12.37 |
| LtCdr Izu Junichi (51) | 伊豆寿市 | 01.12.37–04.07.38 |
| LtCdr Hasegawa Minoru (51) | 長谷川 稔 | 04.07.38–30.07.38 |
| LtCdr Yamada Kaoru (50) | 山田 薫 | 30.07.38–15.12.38 |
| LtCdr Muraoka Tomiichi (52) | 村岡富一 | 15.12.38–28.03.39 |
| LtCdr Kono Masamichi (52) | 河野昌通 | 28.03.39–05.07.39 |
| Reserve | | 05.07.39–20.08.41 |
| LtCdr Harada Hakue (52) | 原田毫衛 | 20.08.41–29.06.42 |
| Cdr Torisu Kennosuke (58) | 鳥巣建之助 | 29.06.42–15.03.43 |
| LtCdr Nakayama Denshichi (61) | 中山伝七 | 15.03.43–25.05.43 |
| LtCdr Shimizu Tsuruzo (58) | 清水鶴造 | 25.05.43–19.10.44 |
| *LtCdr Ono Yasushi (65) | 大野保四 | 19.10.44–27.06.45 |
| I-166 伊166 イ166 |
| Type (Class): KD5 (I-165) |
| Call Sign: JWND |
| Ordered: | ? |
| Builder: Sasebo Kaigun Kosho |
| Laid Down: | | 08.11.1929 |
| Launched: | | 02.06.1931 |
| Completed as I.66: | | 10.11.1932 |
| Renumbered as I-166: | | 20.05.1942 |
| Service: |
| SubDiv 30, 5th SubRon, Combined Fleet | | 15.11.40–10.07.42 |
| SubDiv 30, SW Area Fleet | | 10.07.42–01.01.44 |
| SubDiv 30, 8th SubRon, 6th Fleet | | 01.01.44–25.03.44 |
| 8th SubRon, 6th Fleet | | 25.03.44–17.07.44 |
| Fate: Sunk 17.07.44 07:22 by HMS Telemach (P321) (02°48'N, 101°03'E). 86 dead; 10 saved. |
| Removed from Navy List | | 10.09.1944 |
| Commanding Officers: |
| LtCdr Tsuruoka Nobumichi (43) | 鶴岡信道 | 01.05.32–15.11.33 |
| LtCdr Abe Nobuo (42) | 阿部信夫 | 15.11.33–01.06.34 |
| LtCdr Matsumura Midori (48) | 松村 翠 | 01.06.34–01.11.34 |
| Reserve | | 15.11.34–01.12.36 |
| LtCdr Shichiji Tsuneo (49) | 七字恒雄 | 01.12.36–01.12.37 |
| Reserve | | 01.12.37–01.09.39 |
| LtCdr Yajima Yasuo (51) | 矢島安雄 | 01.09.39–20.11.41 |
| Cdr Yoshitomi Zenji (52) | 吉留 善 | 20.11.41–04.05.42 |
| LtCdr Tanaka Makio (52) | 田中万喜夫 | 05.05.42–15.03.43 |
| LtCdr Nakayama Denshichi (61) | 中山伝七 | 16.03.43–14.05.44 |
| Lt Suwa Koichiro (64) | 諏訪幸一郎 | 15.05.44–17.07.44 |
| I-168 伊168 イ168 |
| Type (Class): KD5A (I-168) |
| Call Sign: JWPD |
| Builder: Kure Navy Yard |
| Ordered: | 1931 |
| Laid Down: | | 18.06.1931 |
| Launched: | | 26.06.1933 |
| Completed as I.-68 | | 31.07.1934 |
| Renumbered as I-168: | | 20.05.1942 |
| Service: |
| SubDiv 12 | | 31.07.34–15.11.35 |
| SubDiv 12, 2nd SubRon, 2nd Fleet | | 15.11.35–01.12.37 |
| SubDiv 12, 3rd SubRon, 2nd Fleet | | 15.11.39–15.11.40 |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 15.11.40–15.09.43 |
| SubDiv 12, 6th Fleet | | 15.09.43–17.07.43 |
| Fate: Sunk 27.07.43 at 18:09 by USS Scamp (SS-277) 60 miles off New Hanover (02°50'S, 149°01'E). 97 dead; 0 saved. |
| Removed from Navy List | | 15.08.1943 |
| Commanding Officers: |
| Cdr Tsuruoka Nobumichi (43) | 鶴岡信道 | 23.02.34–15.11.35 |
| LtCdr Ota Nobunosuke (47) | 太田信之輔 | 15.11.35–15.11.36 |
| LtCdr Kayabara Yasuchika (49) | 栢原保親 | 15.11.36–01.12.37 |
| LtCdr Hatanaka Sumihiko (49) | 畑中純彦 | 01.12.37–15.12.38 |
| LtCdr Uchino Shinji (49) | 内野信二 | 15.12.38–01.09.39 |
| LtCdr Muraoka Tomiichi (52) | 村岡富一 | 01.09.39–19.10.40 |
| Reserve | | 19.10.40–25.07.41 |
| LtCdr Nakamura Otsuji (52) | 中村乙二 | 25.07.41–30.01.42 |
| Cdr Tanabe Yahachi (56) | 田辺弥八 | 30.01.42–30.06.42 |
| Cdr Tonozuka Kinzo (50) | 殿塚謹三 | 30.06.42–30.08.42 |
| LtCdr Watanabe Katsuji (55) | 渡辺勝次 | 30.08.42–14.10.42 |
| *LtCdr Nakajima Sakae (56) | 中島 栄 | 14.10.42–17.07.43 |
| I-169 伊169 イ169 |
| Type (Class): KD6A (I-168) |
| Call Sign: JWQD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered: | 1931 |
| Laid Down: | | 22.12.1931 |
| Launched: | | 15.02.1934 |
| Completed as I-69: | | 28.09.1935 |
| Renumbered as I-169: | | 20.05.1942 |
| Service: |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 15.11.40–15.09.43 |
| SubDiv 12, 6th Fleet | | 15.09.43–10.06.44 |
| Fate: Sunk 04.04.44 at 09:00 by accident at Truk. ? dead; 21 saved. |
| Removed from Navy List | | 10.06.1944 |
| Commanding Officers: |
| LtCdr Miyazaki Takeji (46) | 宮崎武治 | 28.09.35–01.12.36 |
| LtCdr Horinouchi Miyoshi (50) | 堀之内美義 | 01.12.36–01.12.37 |
| LtCdr Shichiji Tsuneo (49) | 七字恒雄 | 01.12.37–20.02.39 |
| LtCdr Iura Shoujiro (51) | 井浦祥二郎 | 20.02.39–24.04.39 |
| LtCdr Otani Kiyonori (49) | 大谷清教 | 24.04.39–01.09.39 |
| Unknown | | 01.09.39–01.09.40 |
| LtCdr Inada Hiroshi (51) | 稲田 洋 | 01.09.40–31.07.41 |
| LtCdr Watanabe Katsuji (55) | 渡辺勝次 | 31.07.41–04.04.43 |
| LtCdr Toyama Zenshin (59) | 当山全信 | 04.04.43–02.02.44 |
| LtCdr Shinohara Shigeo (62) | 篠原茂夫 | 02.02.44–04.04.44 |
| I-70 伊70 イ70 |
| Type (Class): KD6A (I-168) |
| Call Sign: JWRD |
| Builder: Sasebo Navy Yard |
| Ordered: | 1931 |
| Laid Down: | | 25.01.1933 |
| Launched: | | 03.06.1934 |
| Completed: | | 09.11.1935 |
| Service: |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 15.11.40–15.01.42 |
| Fate: Sunk 10.12.41 by aircraft of USS Enterprise (CV-6) 121 miles NE of Molokai (23°45'N, 155°35'W). 93 dead; 0 saved. |
| Removed from Navy List | | 15.01.1942 |
| Commanding Officers: |
| LtCdr Iwagami Hidetoshi (46) | 岩上英寿 | 15.10.35–01.12.36 |
| LtCdr Okata Tadashi (50) | 大畑 正 | 01.12.36–15.11.38 |
| LtCdr Izu Junichi (51) | 伊豆寿市 | 15.11.38–24.08.39 |
| Reserve | | 24.08.39–30.10.40 |
| *Cdr Sano Takao (50) | 佐野孝夫 | 30.10.40–10.12.41 |
| I-171 伊171 イ171 |
| Type (Class): KD6A (I-168) |
| Call Sign: JWSD |
| Builder: Sasebo Navy Yard |
| Ordered: | 1931 |
| Laid Down: | | 15.02.1933 |
| Launched: | | 25.08.1934 |
| Completed as I-71: | | 24.12.1935 |
| Renumbered as I-171: | | 20.05.1942 |
| Service: |
| SubDiv 20, 3rd SubRon, 6th Fleet | | 15.11.40–20.03.42 |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 20.03.42–15.09.43 |
| SubDiv 12, 6th Fleet | | 15.09.43–04.02.44 |
| Fate: Sunk 01.02.44 by USS Guest (DD-472) 15 miles W of Buka (05°37'S, 151°14'E). 91 dead; 0 saved. |
| Removed from Navy List | | 30.04.1944 |
| Commanding Officers: |
| LtCdr Mizuguchi Hyoe (46) | 水口兵衛 | 24.12.35–30.06.36 |
| LtCdr Nagai Hiroaki (48) | 永井宏明 | 30.06.36–31.07.37 |
| LtCdr Koizumi Kiichi (49) | 小泉麒一 | 31.07.37–19.03.38 |
| LtCdr Narahara Shogo (48) | 楢原省吾 | 19.03.38–29.07.38 |
| LtCdr Hori Takeo (50) | 堀 武雄 | 30.07.38–10.10.39 |
| Reserve | | 10.10.39–31.07.41 |
| LtCdr Kawasaki Mutsuro (51) | 川崎陸郎 | 31.07.41–04.07.42 |
| LtCdr Kobayashi Shigeo (56) | 小林茂男 | 04.07.42–29.08.43 |
| *LtCdr Shimada Takeo (59) | 島田武夫 | 29.08.43–04.02.44 |
| I-172 伊172 イ172 |
| Type (Class): KD6A (I-168) |
| Call Sign: JWTD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered: | 1931 |
| Laid Down: | | 16.12.1933 |
| Launched: | | 06.04.1935 |
| Completed: | | 07.01.1937 |
| Service: |
| SubDiv 20, 3rd SubRon, 6th Fleet | | 15.11.40–20.03.42 |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 20.03.42–20.11.42 |
| Fate: Missing from 03.11.42 off Guadalcanal. 91 dead; 0 saved. |
| Removed from Navy List | | 15.12.1942 |
| Commanding Officers: |
| LtCdr Minamizato Katsuji (48) | 南里勝次 | 07.01.37–01.12.37 |
| Cdr Kayabara Yasuchika (49) | 栢原保親 | 01.12.37–09.10.39 |
| Cdr Koizumi Kiichi (49) | 小泉麒一 | 20.11.39–20.08.41 |
| LtCdr Togami Ichiro (51) | 戸上一郎 | 20.08.41–19.05.42 |
| *LtCdr Ota Takeshi (55) | 大田 武 | 19.05.42–20.11.42 |
| I-73 伊73 イ73 |
| Type (Class): I-168 |
| Call Sign: JWUD |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered: | 1931 |
| Laid Down: | | 05.04.1934 |
| Launched: | | 20.06.1935 |
| Completed: | | 07.01.1937 |
| Service: |
| SubDiv 20, 3rd SubRon, 6th Fleet | | 15.11.40–10.03.42 |
| Fate: Sunk 27.01.42 by USS Gudgeon (SS-211) 240 miles W of Midway (28°24'N, 178°35'E). ? dead; 0 saved. |
| Removed from Navy List | | 10.03.1942 |
| Commanding Officers: |
| LtCdr Hatanaka Sumihiko (49) | 畑中純彦 | 07.01.37–10.08.37 |
| LtCdr Kato Ryonosuke (48) | 加藤良之助 | 10.08.37–01.12.37 |
| Cdr Fujimoto Den (48) | 藤本 伝 | 01.12.37–20.12.37 |
| Cdr Teraoka Masao (46) | 寺岡正雄 | 20.12.37–15.12.38 |
| Cdr Maejima Toshihide (48) | 前島寿英 | 15.12.38–15.11.39 |
| LtCdr Narusawa Sennao (52) | 成沢千直 | 15.11.39–15.10.40 |
| *Cdr Isobe Akira (52) | 磯部 旦 | 15.10.40–27.01.42 |
| I-174 伊174 イ174 |
| Type (Class): KD6B (I-174) |
| Call Sign: JWVD |
| Builder: Sasebo Navy Yard |
| Ordered: | 1934 |
| Laid Down: | | 16.10.1934 |
| Launched: | | 28.03.1937 |
| Completed: | | 15.08.1938 |
| Service: |
| SubDiv 11, 3rd SubRon, 6th Fleet | | 15.11.40–15.03.43 |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 15.03.43–15.09.43 |
| SubDiv 12, 6th Fleet | | 15.09.43–10.06.44 |
| Fate: Sunk 12.04.44 by US aircraft off of Truk (10°45'N, 152°29'E) 107 dead; 0 saved. |
| Removed from Navy List | | 10.06.1944 |
| Commanding Officers: |
| Cdr Matsuo Yoshiyasu (47) | 松尾義保 | 15.08.38–01.11.38 |
| Cdr Kato Ryonosuke (48) | 加藤良之助 | 01.11.38–20.11.39 |
| LtCdr Iura Shoujiro (51) | 井浦祥二郎 | 20.11.39–15.10.40 |
| LtCdr Ikezawa Masayuki (52) | 池沢政幸 | 15.10.40–10.03.42 |
| LtCdr Kusaka Toshio (53) | 日下敏夫 | 10.03.42–14.11.42 |
| LtCdr Nagai Katsuhiko (57) | 長井勝彦 | 14.11.42–16.03.43 |
| LtCdr Nambu Nobuyuki (61) | 南部伸清 | 16.03.43–23.02.44 |
| *Lt Suzuki Katsuhito (63) | 鈴木勝人 | 23.02.44–12.04.44 |
| I-175 伊175 イ175 |
| Type (Class): KD6B (I-174) |
| Call Sign: JWWD |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered: | 1934 |
| Laid Down: | | 01.11.1934 |
| Launched: | | 16.09.1936 |
| Completed: | | 18.12.1938 |
| Service: |
| SubDiv 11, 3rd SubRon, 6th Fleet | | 15.11.40–15.03.43 |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 15.03.43–15.09.43 |
| SubDiv 12, 6th Fleet | | 15.09.43–10.07.44 |
| Fate: Sunk 04.02.44 by USS Fair (DE-35) E of Wojte (06°48'N, 158°08'E). 100 dead; 0 saved. |
| Removed from Navy List | | 10.07.1944 |
| Commanding Officers: |
| Cdr Okamoto Yoshisuke (47) | 岡本義助 | 01.06.38–15.11.38 |
| Cdr Nagai Hiroaki (48) | 永井宏明 | 15.11.38–01.11.39 |
| LtCdr Inoue Tadakane (51) | 井上規矩 | 01.11.39–09.03.42 |
| LtCdr Uno Kameo (53) | 宇野亀雄 | 09.03.42–14.11.42 |
| *Cdr Tabata Naoshi (58) | 田畑 直 | 14.11.42–04.02.44 |
| I-176 伊176 イ176 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Kure Navy Yard |
| Ordered under the 4th Replacement pogram (#154): | 1939 |
| Laid Down: | | 22.06.1940 |
| Launched: | | 07.06.1941 |
| Completed: | | 04.08.1942 |
| Service: |
| SubDiv 11, 3rd SubRon, 6th Fleet | | 04.08.42–15.03.43 |
| SubDiv 12, 3rd SubRon, 6th Fleet | | 15.03.43–15.09.43 |
| SubDiv 12, 6th Fleet | | 15.09.43–10.07.44 |
| Fate: Sunk 17.05.44 by USS Franks (DD-554) 125 miles NE Green Island (04°01'S, 156°29'E). 103 dead; 0 saved. |
| Removed from Navy List | | 10.07.1944 |
| Commanding Officers: |
| Cdr Tanabe Yahachi (56) | 田辺弥八 | 04.08.42–19.03.43 |
| LtCdr Itakura Mitsumi (61) | 板倉光馬 | 19.03.43–14.04.43 |
| LtCdr Yamaguchi Kosaburo (59) | 山口幸三郎 | 13.04.43–31.01.44 |
| *LtCdr Okada Hideo (61) | 岡田英雄 | 31.01.44–16.05.44 |
| I-177 伊177 イ177 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered under the 4th Replacement Program (#155): | 1939 |
| Laid Down: | | 10.03.1940 |
| Launched: | | 20.12.1941 |
| Completed: | | 16.12.1942 |
| Service: |
| Kure SubRon, Kure ND | | 28.12.42–25.02.43 |
| SubDiv 22, Kure SubRon, Kure ND | | 25.02.43–15.03.43 |
| SubDiv 22, 3rd SubRon, 6th Fleet | | 15.03.43–15.09.43 |
| SubDiv 22, 6th Fleet | | 15.09.43–10.08.44 |
| SubDiv 34, 6th Fleet | | 10.08.44–10.03.45 |
| Fate: Sunk 03.10.44 at 04:40 by USS Samuals, Miles (DE-183) NNE of Angur (07°48'N, 133°28'E). 101 dead; 0 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| LtCdr Nakagawa Hajime (50) | 中川 肇 | 12.42–30.08.43 |
| LtCdr Orita Zenji (59) | 折田善次 | 30.08.43–23.02.44 |
| *LtCdr Watanabe Masaki (63) | 渡辺正樹 | 23.02.44–03.10.44 |
| I-178 伊178 イ178 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Ordered under the 4th Replacement Program (#156): | 1939 |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Laid Down: | | 21.05.1941 |
| Launched: | | 14.02.1942 |
| Completed: | | 26.12.1942 |
| Service: |
| Kure SubRon, Kure ND | | 26.12.42–25.02.43 |
| SubDiv 22, Kure SubRon, Kure ND | | 25.02.43–15.03.43 |
| SubDiv 22, 3rd SubRon, 6th Fleet | | 15.03.43–01.09.43 |
| Fate: Sunk 17.06.43 by Australian aitcraft 65 miles SE of Coffs, Harbor, Australia. 89 dead; 0 saved. |
| Removed from Navy List | | 01.09.1943 |
| Commanding Officers: |
| *Cdr Utsuki Hidejiro (52) | 宇都木秀次郎 | 01.11.42–17.06.43 |
| I-179 伊179 イ179 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered under the 4th Replacement Program (#157): | 1939 |
| Laid Down: | | 21.08.1941 |
| Launched: | | 16.07.1942 |
| Completed: | | 18.06.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 18.06.43–01.09.43 |
| Fate: Sunk 14.07.43 by accident off Akizaki, Japan (33°40'N, 132°40'E). 79 dead; 0 saved. |
| Removed from Navy List | | 01.09.1943 |
| Commanding Officers: |
| *LtCdr Yuasa Hiroshi (59) | 湯浅 弘 | 16.03.43–14.07.43 |
| I-180 伊180 イ180 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Yokosuka Navy Yard |
| Ordered under the 4th Replacement Program (#158): | 1939 |
| Laid Down: | | 17.04.1941 |
| Launched: | | 07.02.1942 |
| Completed: | | 31.01.1943 |
| Service: |
| Kure SubRon, Kure ND | | 15.01.43–25.02.43 |
| SubDiv 22, Kure SubRon, Kure ND | | 25.02.43–15.03.43 |
| SubDiv 22, 3rd SubRon, 6th Fleet | | 15.03.43–15.09.43 |
| SubDiv 22, 6th Fleet | | 15.09.43–10.07.44 |
| Fate: Sunk 26.04.44 at 01:07 by USS Gilmore (DE-18) SW of Cherikof Island, Aleutians (55°10'N, 155°04'E). ? dead; 0 saved. |
| Removed from Navy List | | 10.07.1944 |
| Commanding Officers: |
| LtCdr Kusaka Toshio (53) | 日下敏夫 | 01.12.42–14.09.43 |
| *LtCdr Fujita Hidenori (62) | 藤田秀範 | 15.09.43–26.04.44 |
| I-181 伊181 イ181 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Ordered under the 4th Replaement Progrm (#159): | 1939 |
| Builder: Kure Navy Yard |
| Laid Down: | | 11.11.1941 |
| Launched: | | 02.05.1942 |
| Completed: | | 24.05.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 24.05.43–20.08.43 |
| SubDiv 22, 3rd SubRon, 6th Fleet | | 20.08.43–15.09.43 |
| SubDiv 22, 6th Fleet | | 15.09.43–30.04.44 |
| Fate: Sunk 16.01.44 off Gali, New Guinea. 89 dead; 0 saved. |
| Removed from Navy List | | 30.04.1944 |
| Commanding Officers: |
| Cdr Ohashi Katsuo (53) | 大橋勝夫 | 20.02.43–24.12.43 |
| *Cdr Taoka Kiyoshi (55) | 田岡 清 | 24.12.43–16.01.44 |
| I-182 伊182 イ182 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Yokosuka Navy Yard |
| Ordered under the 4th Replacement Program (#160): | 1939 |
| Laid Down: | | 10.11.1941 |
| Launched: | | 30.05.1942 |
| Completed: | | 10.05.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 10.05.43–10.08.43 |
| SubDiv 22, 3rd SubRon, 6th Fleet | | 10.08.43–01.12.43 |
| Fate: Sunk 01.09.43 by USS Wadsworth (DD-460) off Espritu Santo (15°38'S, 133°03'E). 92 dead; 0 saved. |
| Removed from Navy List | | 01.12.1943 |
| Commanding Officers: |
| *LtCdr Yonehara Minoru (59) | 米原 実 | 16.03.43–01.09.43 |
| I-183 伊183 イ183 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Kawasaki Shipbuilding Co, Kobe |
| Ordered under the 4th replacement Program (#161): | 1939 |
| Laid Down: | | 26.12.1941 |
| Launched: | | 21.01.1943 |
| Completed: | | 03.10.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 03.10.43–25.11.43 |
| 11th SubRon, 6th Fleet | | 25.11.43–28.04.44 |
| SubDiv 22, 6th Fleet | | 28.04.44–10.08.44 |
| Fate: Sunk 29.04.44 by USS Pogy (SS-266) 30 miles S of Cape Ashizuri (32°07'N, 133°03'E). 92 dead; 0 saved. |
| Removed from Navy List | | 10.08.1944 |
| Commanding Officers: |
| *LtCdr Saeki Takeo (59) | 佐伯 卓夫 | 30.08.43–29.04.44 |
| I-184 伊184 イ184 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Yokosuka Navy Yard |
| Ordered under the 4th Replacement Program (#162): | 1939 |
| Laid Down: | | 01.04.1942 |
| Launched: | | 12.12.1942 |
| Completed: | | 15.10.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 15.10.43–25.11.43 |
| 11th SubRon, 6th Fleet | | 25.11.43–31.01.44 |
| SubDiv 22, 6th Fleet | | 31.01.44–10.08.44 |
| Fate: Sunk 19.06.44 by aircraft from USS Sauwanee (CVE-27) 20 miles SE of Saipan (13°01'N, 144°53'E). 96 dead; 0 saved. |
| Removed from Navy List | | 10.08.1944 |
| Commanding Officers: |
| *LtCdr Rikihisa Matsuji (58) | カ久松次 | 15.10.43–19.06.44 |
| I-185 伊185 イ185 |
| Type (Class): KD7 (I-176) |
| Call Sign: |
| Builder: Yokosuka Navy Yard |
| Ordered under the 4th Replacement Program (#163): | 1939 |
| Laid Down: | | 09.02.1942 |
| Launched: | | 16.09.1942 |
| Completed: | | 23.09.1943 |
| Service: |
| 11th SubRon, 1st Fleet | | 23.09.43–25.11.43 |
| 11th SubRon, 6th Fleet | | 25.11.43–20.12.43 |
| SubDiv 22, 6th Fleet | | 20.12.43–10.08.44 |
| Fate: Sunk 22.06.44 at 11:44 by USS Newcomb (DD-586) off Saipan (15°50'N, 147°08'E). 95 dead; 0 saved. |
| Removed from Navy List | | 10.08.1944 |
| Commanding Officers: |
| LtCdr Sekido Yoshimitsu (57) | 関戸好蜜 | 23.09.43–30.04.44 |
| *LtCdr Arai Atsushi (63) | 荒井 淳 | 30.04.44–22.06.44 |
| I-201 伊201 イ201 |
| Type (Class): ST (I-201) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 01.03.1944 |
| Launched: | | 22.07.1944 |
| Completed: | | 02.02.1945 |
| Service: |
| SubDiv 33, Kure SubRon, Kure ND | | 02.02.45–15.04.45 |
| 11th SubRon, 6th Fleet | | 15.04.45–15.06.45 |
| SubDiv 34, 6th Fleet | | 15.06.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered. Sunk 23.05.46 as target at 10:58 by USS Queenfish (SS-393) off Pearl Harbor (21°13'N, 158°08'W). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Sakamoto Kaneyoshi (61) | 坂本金美 | 01.08.44–30.11.45 |
| I-202 伊202 イ202 |
| Type (Class): ST (I-201) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 01.05.1944 |
| Launched: | | 21.09.1944 |
| Completed: | | 12.02.1945 |
| Service: |
| SubDiv 33, Kure SubRon, Kure ND | | 14.02.45–10.04.45 |
| 11th SubRon, 6th Fleet | | 10.04.45–02.09.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled off Sasebo 05.04.46. |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Imai Kenji (67) | 今井賢二 | 14.02.45–30.11.45 |
| I-203 伊203 イ203 |
| Type (Class): ST (I-201) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 01.06.1944 |
| Launched: | | 20.10.1944 |
| Completed: | | 29.05.1945 |
| Service: |
| 11th SubRon, 6th Fleet | | 25.06.45–02.09.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered. Sunk as target by USS Caiman (SS-323) off Pearl Harbor (21°12'N, 158°08'W). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Uesugi Kazuaki (63) | 上杉一秋 | 29.05.45–30.11.45 |
| I-204 伊204 イ204 |
| Type (Class): ST (I-201) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 01.08.1944 |
| Launched: | | 26.12.1944 |
| Completed: | | — |
| Fate: Cancelled 25.07.45. |
| Removed from Navy List | | ? |
| I-205 伊205 イ205 |
| Type (Class): ST (I-201) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 04.09.1944 |
| Launched: | | 15.02.1945 |
| Completed: | | – |
| Fate: Cancelled 19.03.45. |
| Removed from Navy List | | ? |
| I-206 伊206 イ206 |
| Type (Class): ST (I-201) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 27.10.1944 |
| Launched: | | 26.03.1945 |
| Completed: | | — |
| Fate: ? |
| Removed from Navy List | | ? |
| I-207 伊207 イ207 |
| Type (Class): ST (I-201) |
| Type (Class): I-201 |
| Builder: Harima Heavy Industries, Harima |
| Ordered: | ? |
| Laid Down: | | 27.12.1944 |
| Launched: | | — |
| Completed: | | — |
| Fate: ? |
| Removed from Navy List | | ? |
| I-208 伊208 イ208 |
| Type (Class): ST (I-201) |
| Builder: Harima Heavy Industries, Harima |
| Ordered: | ? |
| Laid Down: | | 17.02.1945 |
| Launched: | | — |
| Completed: | | — |
| Fate: ? |
| Removed from Navy List | | ? |
| I-351 伊351 イ351 |
| Type (Class): HS (I-351) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 01.05.1943 |
| Launched: | | 24.02.1944 |
| Completed: | | 28.01.1945 |
| Service: |
| 11th SubRon, 6th Fleet | | 28.01.45–04.04.45 |
| SubDiv 15, 6th Fleet | | 04.04.45–02.09.45 |
| Fate: Sunk 14.07.45 by USS Bluefish (SS-222) 100 miles ENE Borneo (04°30'N, 110°00'E). 110 dead; 3 saved. |
| Removed from Navy List | | 02.09.1945 |
| Commanding Officers: |
| LtCdr Nanbu Nobukiyo [61] | | 10.10.44–10.12.44 |
| *LtCdr Okayama Noboro [64] | | 10.12.44–14.07.45 |
| I-352 伊352 イ352 |
| Type (Class): HS (I-351) |
| Ordered: | ? |
| Builder: Kure Navy Yard |
| Laid Down: | | 08.11.1943 |
| Launched: | | 23.04.1944 |
| Completed: | | — |
| Fate: Hull sunk 22.06.45 |
| Removed from Navy List | | ? |
| I-361 伊361 イ361 |
| Type (Class): D1 (I-361) |
| Builder: Kure Navy Yard |
| Ordered under the 5th Modified Replacement (#5461): | 1942 |
| Laid Down: | | 16.02.1943 |
| Launched: | | 30.10.1943 |
| Completed: | | 25.05.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 25.05.44–15.08.44 |
| 7th SubRon, 6th Fleet | | 15.08.44–20.03.45 |
| SubDiv 15, 6th Fleet | | 20.03.45–10.08.45 |
| Fate: Sunk 31.05.45 by aircraft of USS Anzio (CVE-57) 400 miles SE of Okinawa (20°22'N, 134°09'E). 81 dead; 0 saved. |
| Removed from Navy List | | 10.08.1945 |
| Commanding Officers: |
| Lt Okayama Noboro (64) | 岡山 登 | 25.05.44–11.12.44 |
| *Lt Matsuura Shoji (67) | 松浦正治 | 11.12.44–31.05.45 |
| I-362 伊362 イ362 |
| Type (Class): D1 (I-361) |
| Builder: Mitsubish Heavy Industries, Kobe |
| Ordered under the 5th Modified Replacement (#5462): | 1942 |
| Laid Down: | | 17.03.1943 |
| Launched: | | 29.11.1943 |
| Completed: | | 23.05.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 23.05.44–15.08.44 |
| 7th SubRon, 6th Fleet | | 15.08.44–10.04.45 |
| Fate: Sunk 14.01.45 by USS Fleming (DE-32) (12°08'N, 154°27'E). ? dead; 0 saved. |
| Removed from Navy List | | 10.04.1945 |
| Commanding Officers: |
| LtCdr Nambu Nobuyuki (61) | 南部伸清 | 25.05.44–06.10.44 |
| LtCdr Kihara Sakae (66) | 木原 栄 | 06.10.44–02.12.44 |
| *LtCdr Nakajima Hidenosuke (65) | 中島英之助 | 02.12.44–14.01.45 |
| I-363 伊363 イ363 |
| Type (Class): D1 (I-361) |
| Builder: Kure Navy Yard |
| Ordered under the 5th Modified Replacement (#5463): | 1942 |
| Laid Down: | | 01.05.1943 |
| Launched: | | 12.12.1943 |
| Completed: | | 08.07.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 08.07.44–15.09.44 |
| 7th SubRon, 6th Fleet | | 15.09.44–20.03.45 |
| SubDiv 15, 6th Fleet | | 20.03.45–02.09.45 |
| Fate: Sunk 29.10.45 at 12:45 by mine. 33 dead; 10 saved. Wreck scrapped 1966. |
| Removed from Navy List | | 10.11.1945 |
| Commanding Officers: |
| LtCdr Araki Asakichi (64) | 荒木浅吉 | 08.07.44–02.12.44 |
| *LtCdr Kihara Sakae (66) | 木原 栄 | 02.12.44–29.10.45 |
| I-364 伊364 イ364 |
| Type (Class): D1 (I-361) |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 5th Modified Replacement (#5464): | 1942 |
| Laid Down: | | 26.07.1943 |
| Launched: | | 15.02.1944 |
| Completed: | | 14.06.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 14.06.44–10.12.44 |
| Fate: Sunk 16.09.44 by USS Sea Devil (SS-400) 50 miles E of Bono Peninsuka (34°30'N, 145°23E). ? dead; 0 saved. |
| Removed from Navy List | | 10.12.1944 |
| Commanding Officers: |
| *LtCdr Makino Takeo (64) | 牧野武男 | 14.06.44–15.09.44 |
| I-365 伊365 イ365 |
| Type (Class): D1 (I-361) |
| Builder: Yokosuka Navy Yard |
| Ordered under the 5th Modified Replacement (#5465): | 1942 |
| Laid Down: | | 15.05.1943 |
| Launched: | | 17.12.1943 |
| Completed: | | 01.08.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 01.08.44–30.09.44 |
| 7th SubRon, 6th Fleet | | 30.09.44–28.11.44 |
| Fate: Sunk November 29,1944 09:40. by USS Scabbardfish (SS-397) 75 miles E of Yokosuka (34°34'N, 141°01'E). 95 dead; 1 saved. |
| Removed from Navy List | | 10.03.1945 |
| Commanding Officers: |
| *LtCdr Nakamura Motoo (62) | 中村元夫 | 01.08.44–28.11.44 |
| I-366 伊366 イ366 |
| Type (Class): D1 (I-361) |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 5th Modified Replacement (#5466): | 1942 |
| Laid Down: | | 26.08.1943 |
| Launched: | | 29.03.1944 |
| Completed: | | 03.08.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 03.08.44–02.10.44 |
| 7th SubRon, 6th Fleet | | 02.10.44–20.03.45 |
| SubDiv 15, 6th Fleet | | 20.03.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division Four | 02.11.45–30.11.45 |
| Fate: 02.09.45 surrendered at Kure, scuttled 01.04.46 by USS Nereus (AS–17) off Goto Is. (32°37'N, 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Shoda Keiji (62) | 正田啓治 | 03.08.44–05.01.45 |
| Lt Tokioka Takami (67) | 時岡隆美 | 05.01.45–30.11.45 |
| I-367 伊367 イ367 |
| Type (Class): D1 (I-361) |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 5th Modified Replacement (#5467): | 1942 |
| Laid Down: | | 22.10.1943 |
| Launched: | | 28.04.1944 |
| Completed: | | 15.08.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 15.08.44–15.10.44 |
| 7th SubRon, 6th Fleet | | 15.10.44–20.03.45 |
| SubDiv 15, 6th Fleet | | 20.03.45–02.09.45 |
| Fate: 02.09.45 surrendered at Kure, scuttled 01.04.46 by USS Nereus (AS–17) off Goto Is. (32°37'N, 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| LtCdr Shinohara Shigeo (62) | 篠原茂夫 | 15.08.44–15.11.44 |
| LtCdr Taketomi Kunio (65) | 武富邦夫 | 15.11.44–05.06.45 |
| LtCdr Imanishi Saburo (67) | 今西三郎 | 05.06.45–02.09.45 |
| I-368 伊368 イ368 |
| Type (Class): D1 (I-361) |
| Builder: Yokosuka Navy Yard |
| Ordered under the 5th Modified Replacement (#5468): | 1942 |
| Laid Down: | | 15.07.1943 |
| Launched: | | 29.01.1944 |
| Completed: | | 25.08.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 25.08.44–27.11.44 |
| 7th SubRon, 6th Fleet | | 27.11.44–10.04.45 |
| Fate: Sunk 26.02.45 at 03:38 by USS Anzio (CVE-57) 35 miles W of Iwo Jima (24°43'N, 140°37'E). 85 dead; 0 saved. |
| Removed from Navy List | | 10.04.1945 |
| Commanding Officers: |
| *LtCdr Irisawa Mitsuteru (63) | 入沢三輝 | 30.08.44–26.0245 |
| I-369 伊369 イ369 |
| Type (Class): D1 (I-361) |
| Builder: Yokosuka Navy Yard |
| Ordered under the 5th Modified Replacement (#5469): | 1942 |
| Laid Down: | | 01.09.1943 |
| Launched: | | 09.03.1944 |
| Completed: | | 10.09.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 09.10.44–15.12.44 |
| 7th SubRon, 6th Fleet | | 15.12.44–20.03.45 |
| SubDiv 15, 6th Fleet | | 20.03.45–02.09.45 |
| Fate: 02.09.45 surrendered at Yokosuka, scrapped at Yokosuka 1946. |
| Removed from Navy List | | 15.09.1945 |
| Commanding Officers: |
| LtCdr Matsujima Shigeo (66) | 松島茂雄 | 09.10.44–25.03.45 |
| LtCdr Nakajima Kazato (66) | 中島万里 | 25.03.45–15.09.45 |
| I-370 伊370 イ370 |
| Type (Class): D1 (I-361) |
| Builder: Mitsubishi Zosenso, Kobe |
| Ordered under the 5th Modified Replacement (#5470): | 1942 |
| Laid Down: | | 04.12.1943 |
| Launched: | | 26.05.1944 |
| Completed: | | 04.09.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 04.09.44–04.11.44 |
| 7th SubRon, 6th Fleet | | 04.11.44–10.04.45 |
| Fate: Sunk 26.02.45 at 10:05 by USS Finnegan (DE-307) (22°45'N, 141°27'E). 84 dead; 0 saved. |
| Removed from Navy List | | 10.04.1945 |
| Commanding Officers: |
| *LtCdr Fujikawa Susumu (66) | 藤川 進 | 04.09.44–26.02.45 |
| I-371 伊371 イ371 |
| Type (Class): D1 (I-361) |
| Builder: Mitsubishi Heavy Industries, Kobe |
| Ordered under the 5th Modified Replacement (#5471): | 1942 |
| Laid Down: | | 22.03.1944 |
| Launched: | | 21.07.1944 |
| Completed: | | 02.10.1944 |
| Service: |
| 11th SubRon, 6th Fleet, Combined Fleet | | 02.10.44–06.12.44 |
| 7th SubRon, 6th Fleet, Combined Fleet | | 06.12.44–20.03.45 |
| SubDiv.15, 6th Fleet, Combined Fleet | | 20.03.45–10.04.45 |
| [*] Reassigned before loss known. |
| Fate: Sunk 24.02.45 by USS Largarto (SS-371) in Bungo Strait (32°40'N, 132°33'E). 84 dead; 0 saved. |
| Removed from Navy List | | 10.04.1945 |
| Commanding Officers: |
| *LtCdr Kamihiroshi Yasuo (66) | 上拾石 康雄 | 02.10.44–24.02.45 |
| I-372 伊372 イ372 |
| Type (Class): D1 (I-361) |
| Ordered: under the 5th Modified Replacement (#5472) | 1942 |
| Builder: Yokosuka Navy Yard |
| Laid Down: | | 10.02.1944 |
| Launched: | | 26.06.1944 |
| Completed: | | 08.11.1944 |
| Service: |
| 11th SubRon, 6th Fleet | | 08.11.44–08.01.45 |
| 7th SubRon, 6th Fleet | | 08.01.45–20.03.45 |
| SubDiv 15, 6th Fleet | | 20.03.45–02.09.45 |
| Fate: Sunk 18.07.45 by US aircraft in Yokosuka Harbor. 1 dead; ? saved. |
| Removed from Navy List | | 02.09.1945 |
| Commanding Officers: |
| Lt Matsushita Hiroshi (67) | 松下 寛 | 08.11.44–15.05.45 |
| Lt Takahashi Shingo (68) | 高橋真吾 | 15.05.45–18.07.45 |
| I-373 伊373 イ373 |
| Type (Class): D2 (I-373) |
| Builder: Yokosuka Kaigun Koho |
| Ordered: | ? |
| Laid Down: | | 15.08.1944 |
| Launched: | | 30.11.1944 |
| Completed: | | 14.04.1945 |
| Service: |
| 11th SubRon, 6th Fleet | | 14.04.45–20.06.45 |
| SubDiv 15, 6th Fleet | | 20.06.45–15.09.45 |
| Fate: Sunk 14.08.45 by USS Spikefish (SS-404) 190 miles SE Shanghai (29°02'N, 123°53'E). 84 dead; 1 saved. |
| Removed from Navy List | | 15.09.1945 |
| Commanding Officers: |
| *LtCdr Inobu Yukio (66) | 射延行雄 | 10.04.45–14.08.45 |
| I-374 伊374 イ374 |
| Type (Class): D2 (I-373) |
| Builder: Yokosuka Navy Yard |
| Ordered: | ? |
| Laid Down: | | 24.10.1944 |
| Launched: | | — |
| Completed: | | — |
| Fate: ? |
| Removed from Navy List | | ? |
| I-400 伊400 イ400 |
| Type (Class): STO (I-400) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 18.01.1943 |
| Launched: | | 18.01.1944 |
| Completed: | | 30.12.1944 |
| Service: |
| SubDiv 1, 6th Fleet, Combined Fleet | | 30.12.44–02.11.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 28.08.45 surrendered 200m SE Yokosuka. Sunk 04.06.46 by USS Trumpetfish (SS-425) off Pearl Harbor (21°13'N, 158°07'W). |
| Removed from Navy List | | 15.09.1945 |
| Commanding Officers: |
| Cdr Kusaka Toshio (53) | 日下敏夫 | 01.09.44–30.11.45 |
| I-401 伊401 イ401 |
| Type (Class): STO (I-400) |
| Builder: Sasebo Navy Yard |
| Ordered: | ? |
| Laid Down: | | 26.04.1943 |
| Launched: | | 11.03.1944 |
| Completed: | | 08.01.1945 |
| Service: |
| SubDiv 1, 6th Fleet | | 08.01.45–02.11.45 |
| post-war US Navy's Japanese Submarine Division One | 02.11.45–30.11.45 |
| Fate: 25.08.45 surrendered at sea. Sunk as target 31.05.46 by USS Cabezon (SS-334) off Pearl Harbor (21°12'N, 158°07'W). |
| Removed from Navy List | | 15.09.1945 |
| Commanding Officers: |
| LtCdr Nambu Nobuyuki (61) | 南部伸清 | 11.12.44–30.11.45 |
| I-402 伊402 イ402 |
| Type (Class): STO (I-400) |
| Builder: Sasebo Navy Yard |
| Ordered: | ? |
| Laid Down: | | 20.10.1943 |
| Launched: | | 05.09.1944 |
| Completed: | | 25.07.1945 |
| Service: |
| SubDiv 1, 6th Fleet | | 24.07.45–15.09.45 |
| Fate: 02.09.45 surrendered scuttled by USS Everett F Larson (DD-830) off Goto Retto (32°37'N, 129°17'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| Cdr Nakamura Otsuji (52) | 中村乙二 | 15.03.45–30.11.45 |
| I-404 伊404 イ404 |
| Type (Class): STO (I-400) |
| Builder: Kure Navy Yard |
| Ordered: | ? |
| Laid Down: | | 18.11.1943 |
| Launched: | | 07.07.1944 |
| Completed: | | — |
| Fate: Hull sunk 28.07.45. |
| Removed from Navy List | | — |
| I-405 伊405 イ405 |
| Type (Class): STO (I-400) |
| Builder: ? |
| Ordered: | ? |
| Laid Down: | | 27.09.1944 |
| Launched: | | — |
| Completed: | | — |
| Fate: fate |
| Removed from Navy List | | — |
| I-501 伊501 イ501 |
| Type: IX-D2 |
| Ordered: | 15.08.1940 |
| Builder: AG Wasser, Bremen Germany |
| Laid Down: | | 15.03.1941 |
| Launched: | | 30.12.1941 |
| Completed as U-181: | | 09.05.42 |
| Service: |
| German Navy | | 09.05.42–05.05.45 |
| Taken over by the Japanese Navy at Singapore | | 08.05.1945 |
| Commissioned as I-501 | | 14.07.1945 |
| 1st Southern Exp Fleet, 10th Area Fleet | | 15.07.45–02.09.45 |
| Fate: 02.09.45 surrendered. Scuttled 16.02.46 in Straits of Malacca (03°05'N, 100°04'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| German LtCdr Wolgang Lüth | | 09.05.42–01.11.43 |
| German Cdr Kurt Freiwald | | 01.11.43–05.05.45 |
| LtCdr Sato Kiyoteru (66) | 佐藤清輝 | 15.07.45–30.11.45 |
| I-502 伊502 イ502 |
| Type: Type IX-D2 |
| Builder: AG Waser, Bremen, Germany |
| Ordered: | 05.06.1941 |
| Laid Down: | | 15.08.1942 |
| Lunched: | | 08.06.1943 |
| Completed as U-862: | | 07.10.1943 |
| Service: |
| German Navy | | 07.10.43–05.05.44 |
| Taken over by the Japanese Navy at Singapore | | 05.05.1945 |
| Commissioned as I-502 | | 15.07.1945 |
| 1st Southern Exp Fleet, 10th Area Fleet | | 15.07.45–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 15.02.46 in Strait of Malacca (03°05'N, 100°38'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| German LtCdr Heinrich Timm | | 07.10.43–05.05.45 |
| LtCdr Yamanaka Yoshiaki (66) | 山中修明 | 15.07.45–30.11.45 |
| I-503 伊503 イ503 |
| Type: Marcello |
| Builder: Odero-Terni-Orlando (OTO) Muggiano, Italy |
| Ordered: | ? |
| Laid Down: | | 1938 |
| Launched: | | 13.03.1939 |
| Completed as Comandante Alfredo Cappelli: | | 23.09.1939 |
| Renamed Aquila III: | | 11.05.1943 |
| Service: |
| Italian Navy | | 23.09.39–09.09.43 |
| Captured by Japanese Navy at Singapore | | 09.09.1943 |
| Japanese handed to Germans; renamed UIT–24: | 10.09.1943 |
| German Navy | | 12.43–05.05.45 |
| Taken over by the Japanese at Kobe | | 10.05.1945 |
| Commissioned as I-503 | 15.07.1945 |
| Kure ND | | 15.07.45–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 16.04.46 in Kii Suido. |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| Italian LtCdr Cristiano Masi | | 23.09.39–29.09.40 |
| Italian LtCdr Salvatore Todaro | | 29.09.40–05.41 |
| Italian Lt Aldo Lenzi | | 05.41–19.03.42 |
| Italian Lt Marco Revedin | | 19.03.42–13.05.43 |
| Italian Lt Water Auconi | | 13.05.43–09.09.43 |
| German Lt Heinrich Pahls | | 10.09.43–10.05.45 |
| Lt Hirota Hideo (67) | 広田秀三 | 15.07.45–30.11.45 |
| I-504 伊504 イ504 |
| Type: XB |
| Builder: Odero-Terni-Orlando (OTO) Muggiano, Italy |
| Laid Down: | |
| Launched: | | 06.01.1940 |
| Completed as Luigi Torelli | | 15.05.1940 |
| Renamed Aquila VI | | 14.03.1943 |
| Service: |
| Italian Navy | | 15.05.40–10.09.43 |
| Captured by Japanese Navy at Singapore: | | 08.09.1943 |
| Japanese handed to Germans, renamed UIT-25 | | 10.09.1943 |
| German Navy | | 10.09.43–05.05.45 |
| Taken over by the Japanese Navy at Kobe | | 10.05.1945 |
| Commissioned as I-504 | | 15.07.1945 |
| Kure ND | | 15.07.45–30.11.45 |
| Fate: 02.09.45 surrendered. Scuttled 16.04.46 in Kii Suido. |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| Italian Cdr Aldo Cocchia | | 15.05.40–07.10.40 |
| Italian Cdr Primo Longobardo | | 07.10.40–21.07.41 |
| Italian LtCdr Antonio de Giacomo | | 21.07.41–03.06.42 |
| Italian Lt Augusto Migliorini | | 03.06.42–14.06.43 |
| Italian Lt Enrico Gropalli | | 14.06.43–08.09.43 |
| German Cdr Werner Striegler | | 06.12.43–01.09.44 |
| German Lt(jg) Herbert Schrein | | 01.09.44–24.11.44 |
| German Lt(jg) Alfred Meier | | 25.11.44–10.05.45 |
| Lt Hirota Hideo (67) | 広田秀三 | 15.07.45–30.11.45 |
| I-505 伊505 イ505 |
| Type: Type XB |
| Builder: Krupp Germaniawerft, Kiel |
| Ordered: | 06.08.1940 |
| Laid Down: | | 31.05.1941 |
| Launched: | | 06.10.1942 |
| Completed as U-219 | | 12.12.42 |
| Service: |
| German Navy | | 12.12.42–08.05.45 |
| Taken over by the Japanese Navy at Batavia | | 08.05.1945 |
| Commissioned as I-505 | | 15.07.1945 |
| 2nd Southern Exp Fleet, 10th Area Fleet | | 15.07.45–02.09.45 |
| Fate: 12.09.45 surrendered at Tanjong Priok. Scuttled 03.02.46 by HrMs Kortenar in Sunda Strait (06°31'S, 104°54'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| German Cdr Walter Burghagen | | 12.12.42–05.05.45 |
| No CO | | 08.05.45–02.09.45 |
| I-506 伊506 イ506 |
| Type: Type IX-D1 |
| Ordered: | 04.11.1940 |
| Builder: AG Wasser, Bremen |
| Laid Down: | | 15.05.1941 |
| Launched as U-195: | | 08.04.1942 |
| Completed | | 25.09.1942 |
| Service: |
| German Navy | | 05.09.42–08.05.45 |
| Taken over by the Japanese Navy at Batavia | | 08.05.1945 |
| Commissioned as I-506 | | 15.07.1945 |
| 2nd Southern Exp Fleet, 10th Area Fleet | | 15.07.45–02.09.45 |
| Fate: 02.09.45 surrendered. Scuttled 15.02.46 in Bali Sea (06°50'S, 114°42'E). |
| Removed from Navy List | | 30.11.1945 |
| Commanding Officers: |
| German Cdr Heinz Buchholz | | 05.09.42–16.04.44 |
| German Lt(jg) Friedrich Steinfeldt | | 16.04.44–05.05.45 |
| No captain appointed | | 05.05.45–02.09.45 |
|
