Complete Records - I-Type Submarines: Part 1

[ijnfleetadmiral]

Here's what I have for them...TIA to anyone who can fill in any blanks!

I-1
Commanding Officers
(CEO) - LCDR KASUGA Atsushi (37) - 1 April 1925 - 10 March 1926
LCDR / CDR KASUGA Atsushi (37) - 10 March 1926 - 29 July 1927
LCDR / CDR KASUGA Sueaki (37) - 29 July 1927 - 10 December 1928
LCDR NAKAMURA Motoji (39) - 10 December 1928 - 5 November 1929
RESERVE - 5 November 1929 - 15 November 1930
LCDR SATO Shiro (43) - 15 November 1930 - 1 December 1931
LCDR NAGAI Mitsuru (45) - 1 December 1931 - 1 November 1933
LCDR IMAZATO Hiroshi (45) - 1 November 1933 - 15 November 1935
LCDR NAGAI Hiroaki (48) - 15 November 1935 - 15 February 1936
CDR OTAKE Toshio (45) - 15 February 1936 - 1 November 1936
LCDR KOBAYASHI Hajime (48) - 1 November 1936 - 1 December 1936
CDR MIYAZAKI Takeji (43) - 1 December 1936 - 15 October 1937
LCDR / CDR HAMANO Motokazu (47) - 15 October 1937 - 20 November 1939
CDR KATO Ryonosuke (48) - 20 November 1939 - 6 July 1940
CDR ODA Tamekiyo (43) - 6 July 1940 - 15 September 1940
CDR KATO Ryonosuke (48) – 15 September 1940 – 30 October 1940
CDR OTANI Kiyonori (49) – 30 October 1940 - 25 August 1941
CDR ANKYU Eitaro (50) - 25 August 1941 - 31 October 1942
LCDR / CDR* SAKAMOTO Eiichi (57) - 31 October 1942 - 29 January 1943 (KIA)

Torpedo Officers
(EO) - LT SATO Shiro (43) - 5 February 1926 - 10 March 1926
LT SATO Shiro (43) - 10 March 1926 - 1 December 1926
??? - 1 December 1926 - ???
LT ISOBE Akira (52) - ??? - ???
LT SAKAMOTO Kaneyoshi (61) - ??? - 2 February 1942
LT KOREEDA Sadayoshi (64) - 2 February 1942 - 29 January 1943

Gunnery Officers
??? - 1 April 1925 - ???
ENS OIKAWA Akira (70) - ??? - 29 January 1943 (POW)

Navigators
??? - 1 April 1925 - ???
LT FUJIMOTO Den (48) - ??? - ???
??? - ??? - 1 June 1931
LT IURA Shojiro (51) - 1 June 1931 - 1 December 1932
??? - 1 December 1932 - 1 December 1936
LT FUKUMURA Toshiaki (54) - 1 December 1936 - 1 December 1937
??? - 1 December 1937 - 22 May 1942
LTJG SAKAI Toshimi (68) - 22 May 1942 - 29 January 1943

Chief Engineers
(EO) - (E) LCDR HIO Kiyoshi (Eng. 19) - 15 April 1925 - 10 March 1926
(E) LCDR HIO Kiyoshi (Eng. 19) - 10 March 1926 - 1 November 1926
(E) LCDR TOYAMA Kiyoharu (Eng. 21) - 1 November 1926 - 1 December 1927
??? - 1 December 1927 - 10 December 1928
(E) LCDR HAMANO Gunichi (Eng. 29) - 10 December 1928 - 1 April 1930
??? - 1 April 1930 - 1 April 1942
(E) LT / LT MUTO Keigo (??) - 1 April 1942 - 26 December 1942
LT DAIDO Kiyonori (??) - 26 December 1942 - 29 January 1943

I-2
Commanding Officers
(CEO) - LCDR WATANABE Tokushiro (37) - 20 October 1925 - 24 July 1926
LCDR WATANABE Tokushiro (37) - 24 July 1926 - 15 November 1927
LCDR KOBAYASHI Mitsuyoshi (37) - 15 November 1927 - 10 December 1928
LCDR KOSOKABE Yuzuru (38) - 10 December 1928 - 15 November 1929
RESERVE - 15 November 1929 - 15 November 1930
LCDR AKIYAMA Katsuzo (40) - 15 November 1930 - 1 December 1931
LCDR / CDR IMAIZUMI Yoshijiro (44) - 1 December 1931 - 22 October 1934
LCDR KUME Ikuji (46) - 22 October 1934 - 15 November 1935
LCDR KOBAYASHI Hajime (48) - 15 November 1935 - 1 December 1936
CDR FUKAYA Sokichi (46) - 1 December 1936 - 15 November 1937
CDR ENDO Keiyu (46) - 15 November 1937 - 15 December 1938
CDR FUJII Akiyoshi (49) - 15 December 1938 - 31 July 1941
CDR INADA Hiroshi (51) - 31 July 1941 - 16 March 1943
LT MORINAGA Masahiko (59) - 16 March 1943 - 15 April 1943
LT / LCDR ITAKURA Mitsumi (61) - 15 April 1943 - 20 December 1943
LCDR / CDR* YAMAGUCHI Kazuo (61) - 20 December 1943 - 7 April 1944 (KIA)

Torpedo Officers
??? - 24 July 1926 - 1 December 1931
LT FUJII Akiyoshi (49) - 1 December 1931 - 25 March 1933
??? - 25 March 1933 - ???
LT IZUTSU Monshiro (57) - ??? - ???
??? - ??? - 15 January 1942
LT OBA Saichi (62) - 15 January 1942 - 6 February 1942
LT TOYOMASU Seihachi (59) - 6 February 1942 - 15 May 1942
LT SHINOHARA Shigeo (62) - 15 May 1942 - 25 February 1943
LT EBA Kunizo (66) - 25 February 1943 - ???
??? - ??? - 20 January 1944
LT / LCDR* FUSE Sadatake (??) - 20 January 1944 - 7 April 1944 (KIA)

Gunnery Officers
??? - 24 July 1926 - 15 December 1938
ENS ARAKI Asakichi (64) - 15 December 1938 - ???
??? - ??? - 7 April 1944

Navigators
??? - 24 July 1926 - 2 February 1942
LTJG / LT JITOU Miyoshi (67) - 2 February 1942 - 28 August 1942
LT WATANABE Ichiro (??) - 28 August 1942 - ???
??? - ??? - 15 April 1943
LTJG KURASHIMA Yasusuke (68) - 15 April 1943 - ???
??? - ??? - 1 February 1944
LTJG / LT* MARUYAMA Shiro (70) - 1 February 1944 - 7 April 1944 (KIA)

Chief Engineers
??? - 24 July 1926 - 1 December 1932
(E) LT YOSHIMURA Kishaku (Eng. 30) - 1 December 1932 - 15 November 1933
??? - 15 November 1933 - 26 December 1942
LT TAKAHASHI Kuniyoshi (??) - 26 December 1942 - ???
??? - ??? - 7 April 1944

I-3
Commanding Officers
(CEO) - LCDR OGINO Nakaichiro (37) - 1 May 1926 - 30 November 1926
LCDR OGINO Nakaichiro (37) - 30 November 1926 - 15 January 1928
LCDR SEKINO Akira (38) - 15 January 1928 - 15 December 1928
LCDR MICHINO Kiyoshi (41) - 15 December 1928 - 1 June 1929
LCDR HARADA Kaku (41) - 1 June 1929 - 1 December 1932
CDR ISHIZAKI Noboru (42) - 1 December 1932 - 15 November 1933
CDR UOZUMI Jisaku (42) - 15 November 1933 - 1 November 1934
LCDR MATSUMURA Midori (48) - 1 November 1934 - 20 October 1935
LCDR KUME Ikuji (46) - 20 October 1935 - 15 November 1935
LCDR NAGAI Hiroaki (48) - 15 November 1935 - 6 January 1936
LCDR KOBAYASHI Hajime (48) - 6 January 1936 - 1 December 1936
CDR MATSUO Yoshiyasu (47) - 1 December 1936 - 1 December 1937
LCDR ISHIKAWA Nobuo (49) - 1 December 1937 - 15 November 1938
CDR KOBAYASHI Hajime (48) - 15 November 1938 - 24 April 1939
LCDR IURA Shojiro (51) - 24 April 1939 - 20 October 1939
CDR FUJII Akiyoshi (49) - 20 October 1939 - 25 July 1940
LCDR KINASHI Takakazu (51) - 25 July 1940 - 4 November 1940
LCDR / CDR TONOZUKA Kinzo (50) - 4 November 1940 - 20 May 1942
LCDR / CDR / RADM* TOGAMI Ichiro (51) - 20 May 1942 - 9 December 1942 (KIA)

Torpedo Officers
??? - 30 November 1926 - ???
LT HIROKAWA Takashi (51) - ??? - ???
LT UNO Kameo (53) - ??? - ???
??? - ??? - 2 February 1942
LTJG / LT / LCDR* YOKOO Takashi (64) - 2 February 1942 - 9 December 1942 (KIA)

Gunnery Officers
??? - 30 November 1926 - ???
ENS TAKEICHI ??? (??) - ??? - 9 December 1942

Navigators
??? - 30 November 1926 - ???
LT FUJITANI Ataka (46) - ??? - 15 March 1929
LT OKA Iwao (50) - 15 March 1929 - 1 July 1929
??? - 1 July 1929 - 1 December 1930
LT NAKAMURA Kaoru (52) - 1 December 1930 - 1 December 1931
??? - 1 December 1931 - 1 May 1942
LTJG / LT / LCDR* ASHINO Shoichi (66) - 1 May 1942 - 9 December 1942 (KIA)

Chief Engineers
??? - 30 November 1926 - 1 December 1930
(E) LT ICHISE Saburo (Eng. 28) - 1 December 1930 - 1 December 1931
??? - 1 December 1931 - ???
(E) LT KOMOOKA Toyo (Eng. 31) - ??? - ???
??? - ??? - 9 December 1942

I-4
Commanding Officers
(CEO) - CDR TAKATSUKA Seigo (38) - 15 May 1929 - 24 December 1929
CDR TAKATSUKA Seigo (38) - 24 December 1929 - 1 April 1930
LCDR KODA Takero (41) - 1 April 1930 - 1 December 1931
LCDR NAKAOKA Nobuki (45) - 1 December 1931 - 4 October 1932
LCDR NAKAOKA Masao (46) - 4 October 1932 - 15 November 1935
LCDR MIZOHATA Sadakazu (46) - 15 November 1935 - 30 June 1936
CDR MIZUGUCHI Hyoe (46) - 30 June 1936 - 1 December 1937
LCDR KOBAYASHI Hajime (48) - 1 December 1937 - 15 November 1938
LCDR / CDR EMI Tetsuhiro (50) - 15 November 1938 - 1 November 1941
CDR NAKAGAWA Hajime (50) - 1 November 1941 - 15 August 1942
CDR KAWASAKI Mutsuro (51) - 15 August 1942 - 6 November 1942
LCDR / CDR* UENO Toshitake (56) - 6 November 1942 - 20 December 1942 (KIA)

Torpedo Officers
(EO) - LT KATO Yukio (47) - 1 July 1929 - 24 December 1929
LT KATO Yukio (47) - 24 December 1929 - 22 April 1930
??? - 22 April 1930 - ???
LT KANEMOTO Shoji (61) - ??? - ???
LT / LCDR* OZAKI Giichi (62) - ??? - 20 December 1942 (KIA)

Gunnery Officers
??? - 24 December 1929 - 20 December 1942

Navigators
??? - 24 December 1929 - 15 October 1940
LTJG SUWA Koichiro (64) - 15 October 1940 - ???
??? - ??? - 27 July 1942
LTJG / LT* UEDA Atsuji (67) - 27 July 1942 - 20 December 1942 (KIA)

Chief Engineers
??? - 24 December 1929 - 20 December 1942

I-5
Commanding Officers
(CEO) - LCDR SATO Shiro (43) - 1 December 1931 - 31 July 1932
LCDR / CDR SATO Shiro (43) - 31 July 1932 - 15 July 1934
LCDR KIJIMA Moritsugu (44) - 15 July 1934 - 25 August 1934
CDR SATO Shiro (43) - 25 August 1934 - 15 November 1934
LCDR TAKEZAKI Kaoru (45) - 15 November 1934 - 21 October 1935
LCDR / CDR MIZUGUCHI Hyoe (46) - 21 October 1935 - 1 December 1936
CDR IWAGAMI Hidetoshi (46) - 1 December 1936 - 1 December 1937
LCDR UCHINO Shinji (49) - 1 December 1937 - 15 December 1938
CDR SHIMIZU Taro (48) - 15 December 1938 - 15 November 1939
CDR NISHINO Kozo (48) - 15 November 1939 - 30 November 1940
CDR SHICHIJI Tsuneo (49) - 30 November 1940 - 5 February 1942
CDR NAKAMURA Otoji (52) - 5 February 1942 - 28 February 1942
LCDR UTSUKI Hidejiro (52) - 28 February 1942 - 31 October 1942
LCDR SEKIDO Yoshimitsu (57) - 31 October 1942 - 20 April 1943
LT / LCDR MORINAGA Masahiko (59) - 20 April 1943 - 30 April 1944
LCDR / CDR* DOI Mareshige (60) - 30 April 1944 - 19 July 1944 (KIA)

Torpedo Officers
??? - 31 July 1932 - 10 April 1933
LT MATSUMURA Kanji (50) - 10 April 1933 - 28 February 1935
??? - 28 February 1935 - 1939
LT ITAKURA Mitsumi (61) - 1939 - ???
??? - ??? - 30 September 1942
LT OGAWA Kenkichi (65) - 30 September 1942 - ???
??? - ??? - 19 July 1944

Gunnery Officers
??? - 31 July 1932 - 19 July 1944

Navigators
(EO) - LT KAYABARA Yasuchika (49) - 1 February 1932 - 31 July 1932
LT KAYABARA Yasuchika (49) - 31 July 1932 - 28 March 1933
??? - 28 March 1933 - ???
LT TAKIZAWA Koreaki (57) - ??? - 30 July 1938
LT TOSHIMA Toshio (60) - 30 July 1938 - 1 November 1938
??? - 1 November 1938 - 25 January 1943
LTJG FUJIMURA Akira (68) - 25 January 1943 - ???
??? - ??? - 1 March 1944
LTJG TANAKA Chiaki (69) - 1 March 1944 - 20 April 1944
LTJG / LT / LCDR* OKAZAKI Hiroshi (70) - 20 April 1944 - 19 July 1944 (KIA)

Chief Engineers
??? - 31 July 1932 - 19 July 1944

I-6
Commanding Officers
(CEO) - LCDR / CDR KIJIMA Moritsugu (44) - 25 August 1934 - 15 May 1935
CDR KIJIMA Moritsugu (44) - 15 May 1935 - 25 May 1935
LCDR NAGAI Takeo (47) - 25 May 1935 - 1 December 1936
CDR OKADA Yusaku (47) - 1 December 1936 - 15 November 1937
CDR OYAMA Toyojiro (47) - 15 November 1937 - 1 November 1939
CDR NAGAI Hiroaki (47) - 1 November 1939 - 30 October 1940
CDR NARAHARA Shogo (48) - 30 October 1940 - 1 February 1941
LCDR / CDR INABA Michimune (51) - 1 February 1941 - 23 May 1942
LCDR NAKAMURA Shozo (54) - 23 May 1942 - 15 December 1942
LCDR IZUTSU Monshiro (58) - 15 December 1942 - 20 May 1943
LCDR SHIMOSE Kiichiro (58) - 20 May 1943 - 30 April 1944
LT / LCDR SHINOHARA Shigeo (62) - 30 April 1944 - 12 May 1944
CDR HORI Takeo (50) - 12 May 1944 - 27 May 1944
LCDR / CDR* FUMON Shozo (63) - 27 May 1944 - 16 June 1944 (KIA)

Torpedo Officers
??? - 31 March 1937 - 15 May 1942
LT SAEKI Takuo (59) - ??? - ???
LTJG / LT ICHIMURA Rikinosuke (64) - 15 May 1942 - 10 December 1942
LT SUGAMASA Tetsuaki (65) - 10 December 1942 - ???
??? - ??? - 16 June 1944

Gunnery Officers
??? - 31 March 1937 - 16 June 1944

Navigators
??? - 31 March 1937 - 10 March 1939
LT KONDO Kenji (60) - 10 March 1939 - ???
??? - ??? - 2 February 1942
LTJG TOKUNAGA Masahiko (67) - 2 February 1942 - 26 October 1942
??? - 26 October 1942 - 30 January 1944
LTJG / LT / LCDR* TAKASUGI Susumu (70) - 30 January 1944 - 16 June 1944 (KIA)

Chief Engineers
??? - 15 May 1935 - 1 August 1942
(E) LT URATA Masashige (??) - 1 August 1942 - ???
??? - ??? - 15 April 1943
LT KADOTA Kiyoshi (??) - 15 April 1943 - ???
??? - ??? - 16 June 1944

I-7
Commanding Officers
(CEO) - CDR TERAOKA Masao (46) - 21 September 1936 - 31 March 1937
CDR TERAOKA Masao (46) - 31 March 1937 - 20 December 1937
CDR FUJIMOTO Den (48) - 20 December 1937 - 28 June 1938
CDR IWAGAMI Hidetoshi (46) - 28 June 1938 - 15 November 1938
CDR OKAMOTO Yoshisuke (47) - 15 November 1938 - 20 October 1939
CDR ISHIKAWA Nobuo (49) - 20 October 1939 – 30 October 1940
CDR NAGAI Hiroaki (48) - 30 October 1940 - 20 August 1941
CDR KOIZUMI Kiichi (49) - 20 August 1941 - 5 December 1942
LCDR TABATA Naoshi (58) - 5 December 1942 - 16 March 1943
LCDR / CDR* NAGAI Katsuhiko (57) - 16 March 1943 - 21 June 1943 (KIA)

Torpedo Officers
??? - 31 March 1937 - ???
LT OHASHI Katsuo (53) - ??? - ???
??? - ??? – 6 February 1942
LT TAKEUCHI Yoshitake (59) - 6 February 1942 - 30 September 1942
LT SUGAMASA Tetsuaki (65) - 30 September 1942 - 10 December 1942
??? - 10 December 1942 - 1 February 1943
LT HAYAKAWA Norimasa (64) - 1 February 1943 - 15 April 1943
LT / LCDR* SAKAGUCHI Rokuro (65) - 15 April 1943 - 21 June 1943 (KIA)

Gunnery Officers
??? - 31 March 1937 - ???
LTJG SHINDO Yoshio (70) - ??? - 21 June 1943

Navigators
??? - 31 March 1937 - ???
LTJG ORITA Zenji (59) - ??? - ???
LTJG TSUKUDO Tetsuo (63) - April 1941 - 15 October 1941
??? - 15 October 1941 - 22 May 1942
LT EBA Kunizo (66) - 22 May 1942 - 28 August 1942
LT JITOU Miyoshi (67) - 28 August 1942 - ???
??? - ??? - 20 February 1943
LTJG / LT / LCDR* HANABUSA Yoshio (67) - 20 February 1943 - 21 June 1943 (KIA)

Chief Engineers
??? - 31 March 1937 - 27 April 1942
(E) LCDR ABE Noritaka (??) - 27 April 1942 - ???
LT / LCDR* HANDA Masao (??) - ??? - 21 June 1943 (KIA)

Communications Officers
(EO) - LTJG ORITA Zenji (59) - ??? - 31 March 1937
LTJG ORITA Zenji (59) - 31 March 1937 - ???
??? - ??? - 1 November 1939
LT TATEGAMI Rikuta (60) - 1 November 1939 - 15 April 1941
VACANT - 15 April 1941 - 21 April 1941
LTJG / LT UENO Norihiro (66) - 21 April 1941 - 29 August 1942
LTJG HANABUSA Yoshio (67) - 29 August 1942 - 20 February 1943
LTJG NAKAYAMA Taiichi (69) - 20 February 1943 - 21 June 1943

I-8
Commanding Officers
(CEO) - CDR GOTO Hiroshi (48) - 20 May 1938 - 15 December 1938
CDR GOTO Hiroshi (48) - 15 December 1938 - 15 November 1939
CDR SHIMIZU Taro (48) - 15 November 1939 - 31 October 1941
CDR EMI Tetsuhiro (50) - 31 October 1941 - 25 July 1942
CDR UCHINO Shinji (49) - 25 July 1942 - 15 January 1944
CDR / CAPT ARIIZUMI Tetsunosuke (51) - 15 January 1944 – 5 November 1944
VACANT – 5 November 1944 - 1 December 1944
LCDR / CAPT* SHINOHARA Shigeo (62) - 1 December 1944 - 31 March 1945 (KIA)

Torpedo Officers
(EO) - LCDR ISOBE Akira (52) - ??? - 15 December 1938
LCDR ISOBE Akira (52) - 15 December 1938 - 15 October 1939
LT KITAMURA Soshichi (55) - ??? - ???
LT YONEHARA Minoru (59) - ??? - ???
LT SUZUKI Shokichi (62) - 11 May 1942 - ???
??? - ??? - 25 February 1943
LT KAMIHIROSHI Yasuo (66) - 25 February 1943 - ???
LT HONDA Yoshikuni (67) - 31 January 1944 - 14 October 1944
LT IMAI Umeichi (67) - 14 October 1944 - 10 January 1945
LT ONO Shimpei (68) - 10 January 1945 - 27 January 1945
LT / LCDR* TANAKA Kazue (69) - 27 January 1945 - 31 March 1945 (KIA)

Gunnery Officers
??? - 15 December 1938 - ???
LT MASATAKA Sadao (??) - ??? - ???
??? - ??? - 31 March 1945

Navigators
??? - 15 December 1938 - 1 November 1940
LT HATTORI Shogo (61) - 1 November 1940 - ???
??? - ??? - 1 September 1942
LTJG YOSHIDA Taro (??) - 1 September 1942 - 5 December 1942
LTJG FUSE Sadatake (??) - 5 December 1942 - ???
??? - ??? - 10 January 1944
LT KIRIHARA Yoshisuke (68) - 10 January 1944 - 20 April 1944
LTJG / LT KATAYAMA Goichi (70) - 20 April 1944 - 10 December 1944
LT / LCDR* WARASHINA Takashi (70) - 10 December 1944 - 31 March 1945 (KIA)

Chief Engineers
??? - 15 December 1938 - 21 December 1942
LT HANDA Masao (??) - 21 December 1942 - ???
LT / LCDR YAMADA Kumeo (??) - ??? - 20 April 1943
LCDR TABUCHI Satoru (??) - 20 April 1943 - ???
??? - ??? - 25 October 1944
LT / LCDR* KANO Kazunori (??) - 25 October 1944 - 31 March 1945 (KIA)

Communications Officers
??? - 15 December 1938 - June 1939
LT TANABE Yahachi (56) - June 1939 - 15 November 1940
LTJG / LT AZUMA Yoshitaka (??) - 15 November 1940 - 6 April 1942
LTJG MATSUURA Masaharu (??) - 6 April 1942 - 15 April 1943
LTJG KUWASHIMA Seizo (69) - 15 April 1943 - 5 January 1944
LTJG NAWA Tomoyoshi (70) - 5 January 1944 - 14 October 1944
LTJG / LT KURODA Masaru (71) - 14 October 1944 - 3 February 1945
LTJG / LT* MASUDA Sasuke (72) - 3 February 1945 - 31 March 1945 (KIA)

[fontessa]

Hello ijnfleetadmiral,

I listed a date of the next appointment for the survivor of the ship’s sinking.

I-1
Commanding Officers
(CEO) - LCDR KASUGA Atsushi (37) - 1 April 1925 - 10 March 1926
LCDR / CDR KASUGA Atsushi (37) - 10 March 1926 - 29 July 1927
LCDR / CDR KASUGA Sueaki (37) - 29 July 1927 - 10 December 1928
LCDR NAKAMURA Motoji (39) - 10 December 1928 - 5 November 1929
RESERVE - 5 November 1929 - 15 November 1930
LCDR SATO Shiro (43) - 15 November 1930 - 1 December 1931
LCDR NAGAI Mitsuru (45) - 1 December 1931 - 1 November 1933
LCDR IMAZATO Hiroshi (45) - 1 November 1933 - 15 November 1935
LCDR NAGAI Hiroaki (48) - 15 November 1935 - 15 February 1936
CDR OTAKE Toshio (45) - 15 February 1936 - 1 November 1936
LCDR KOBAYASHI Hajime (48) - 1 November 1936 - 1 December 1936
CDR MIYAZAKI Takeji (43) - 1 December 1936 - 15 October 1937
LCDR / CDR HAMANO Motokazu (47) - 15 October 1937 - 20 November 1939
CDR KATO Ryonosuke (48) - 20 November 1939 - 6 July 1940
CDR ODA Tamekiyo (43) - 6 July 1940 - 15 September 1940
CDR KATO Ryonosuke (48) – 15 September 1940 – 30 October 1940
CDR OTANI Kiyonori (49) – 30 October 1940 - 25 August 1941
CDR ANKYU Eitaro (50) - 25 August 1941 - 31 October 1942
LCDR / CDR* SAKAMOTO Eiichi (57) - 31 October 1942 - 29 January 1943 (KIA)

(CEO) LCDR KASUGA Atsushi: 1 April 1925 - 10 March 1926
LCDR / CDR KASUGA Atsushi: 10 March 1926 - 29 July 1927
LCDR / CDR KASUGA Sueaki: 29 July 1927 - 10 December 1928
LCDR / LCDR NAKAMURA Motoji: 10 December 1928 - 5 November 1929
(ADD) LCDR / CDR KOSOKABE Yuzuru: 5 November 1929 - 15 November 1930
His regular post was CO of I-2.
LCDR / LCDR SATO Shiro: 15 November 1930 - 1 December 1931
LCDR / LCDR NAGAI Mitsuru: 1 December 1931 - 1 November 1933
LCDR / CDR IMAZATO Hiroshi: 1 November 1933 - 15 November 1935
LCDR / LCDR NAGAI Hiroaki: 15 November 1935 - 15 February 1936
CDR / CDR OTAKE Hisao: 15 February 1936 - 2 November 1936
(ADD) LCDR / LCDR KOBAYASHI Hajime: 2 November 1936 - 1 December 1936
His regular post was CO of I-2.
CDR / CDR MIYAZAKI Takeharu: 1 December 1936 - 5 October 1937
LCDR / CDR HAMANO Motoichi: 5 October 1937 - 20 November 1939
CDR / CDR KATO Ryonosuke: 20 November 1939 - 6 July 1940
(ADD) CDR / CDR ODA Tamekiyo: 6 July 1940 - 16 September 1940
His regular post was CO of 7th Submarine Division.
CDR / CDR KATO Ryonosuke: 16 September 1940 - 30 October 1940
CDR / CDR OTANI Kiyonori: 30 October 1940 - 25 August 1941
CDR / CDR YASUHISA Eitaro: 25 August 1941 - 31 October 1942
LCDR / LCDR / CDR* SAKAMOTO Eiichi: 31 October 1942 - 29 January 1943 (KIA)

I-1
Torpedo Officers
(EO) - LT SATO Shiro (43) - 5 February 1926 - 10 March 1926
LT SATO Shiro (43) - 10 March 1926 - 1 December 1926
??? - 1 December 1926 - ???
LT ISOBE Akira (52) - ??? - ???
LT SAKAMOTO Kaneyoshi (61) - ??? - 2 February 1942
LT KOREEDA Sadayoshi (64) - 2 February 1942 - 29 January 1943

(EO) LT / LT SATO Shiro: 5 February 1926 - 10 March 1926
LT / LT SATO Shiro: 10 March 1926 - 1 December 1926
LT / LT DOI Shinji: 1 December 1926 - 15 November 1927
VACANT: 15 November 1927 - 1 December 1927
LT / LT SUGIURA Norio: 1 December 1927 - 25 October 1928
VACANT: 25 October 1928 - 10 December 1928
LT / LT MATSUO Yoshiyasu: 10 December 1928 - 30 November 1929
LT / LT TANNO Keigoro: 30 November 1929 - 1 December 1931
LT / LCDR KATSUMI Motoi: 1 December 1931 - 15 November 1934
LT / LT KAWASAKI Rikuro: 15 November 1934 - 31 October 1935
LT / LCDR YOSHIMURA Iwao: 31 October 1935 - 1 December 1936
LT / LT ICHIKAWA Susumu: 1 December 1936 - 15 November 1937
VACANT: 15 November 1937 - 1 December 1937
LT / LT UTSUGI Hidejiro: 1 December 1937 - 10 June 1938
LT / LT UENO Toshitake: 10 June 1938 - 15 November 1938
VACANT: 15 November 1938 - 15 December 1938
LCDR / LCDR KONO Masamichi: 15 December 1938 - 20 March 1939
LT / LT RIKIHISA Matsuji: 20 March 1939 - 15 November 1939
VACANT: 15 November 1939 - 15 October 1940
LCDR / LCDR NIINA Yoshio: 15 October 1940 - 20 December 1940
LT / LCDR KURIYAMA Shigeshi: 20 December 1940 - 15 October 1941
LT / LT SAKAMOTO Kaneyoshi: 15 October 1941 - 1 February 1942
LT / LT KOREEDA Sadayoshi: 1 February 1942 - 16 March 1943
He survived the sinking.

I-1
Gunnery Officers
??? - 1 April 1925 - ???
ENS OIKAWA Akira (70) - ??? - 29 January 1943 (POW)

I-Type Submarines didn’t have the post of Gunnery Officer.

I-1
Navigators
??? - 1 April 1925 - ???
LT FUJIMOTO Den (48) - ??? - ???
??? - ??? - 1 June 1931
LT IURA Shojiro (51) - 1 June 1931 - 1 December 1932
??? - 1 December 1932 - 1 December 1936
LT FUKUMURA Toshiaki (54) - 1 December 1936 - 1 December 1937
??? - 1 December 1937 - 22 May 1942
LTJG SAKAI Toshimi (68) - 22 May 1942 - 29 January 1943

(EO) LT / LT FUNAKI Shigetoshi: 15 April 1925 - 5 February 1926
(EO) VACANT: 5 February 1926 - 1 August 1925
(EO) LT SHIMIZU Seishin: 1 August 1925 - 10 March 1926
LT / LT SHIMIZU Seishin: 10 March 1926 - 1 December 1926
LT / ??? FUJIMOTO Tsutau: 1 December 1926 - ???
VACANT: ??? - 29 July 1927
LTJG / LTJG USUI Toshio: 29 July 1927 - 1 December 1927
LT / LT ABE Tokuma: 1 December 1927 - 30 November 1929
VACANT: 30 November 1929 - 1 December 1930
LT / LT SUGAWARA Rokuro: 1 December 1930 - 5 June 1931
LT / LT IURA Shojiro: 5 June 1931 - 1 December 1932
LT / LT SAKURAI Takezo: 1 December 1932 - 25 March 1933
LT / LT KOHIGA Masaru: 25 March 1933 - 28 February 1935
LT / LT YOSHIMATSU Tamori: 28 February 1935 - 31 October 1935
VACANT: 31 October 1935 - 1 June 1936
LTJG / LTJG FUJINO Takao: 1 June 1936 - 1 December 1936
LT / LT FUKUMURA Toshiaki: 1 December 1936 - 1 December 1937
LTJG / LT SAKAMOTO Bun’ichi: 1 December 1937 - 15 December 1938
LT / LT OZAKI Takashi: 15 December 1938 - 4 February 1939
VACANT: 4 February 1939 - 10 March 1939
LT / LT OZAKI Takashi: 15 December 1938 - 15 May 1939
LTJG / LT SHINGU Hitoshi: 15 May 1939 - 15 November 1939
VACANT: 15 November 1939 - 15 October 1940
LTJG / LT ICHITOMI Kiyota: 15 October 1940 - 15 April 1941
LTJG / LT EBA Kunizo: 15 April 1941 - 23 May 1942
LTJG / LT / LCDR* SAKAI Toshimi: 23 May 1942 - 29 January 1943 (KIA)

I-1
Chief Engineers
(EO) - (E) LCDR HIO Kiyoshi (Eng. 19) - 15 April 1925 - 10 March 1926
(E) LCDR HIO Kiyoshi (Eng. 19) - 10 March 1926 - 1 November 1926
(E) LCDR TOYAMA Kiyoharu (Eng. 21) - 1 November 1926 - 1 December 1927
??? - 1 December 1927 - 10 December 1928
(E) LCDR HAMANO Gunichi (Eng. 29) - 10 December 1928 - 1 April 1930
??? - 1 April 1930 - 1 April 1942
(E) LT / LT MUTO Keigo (??) - 1 April 1942 - 26 December 1942
LT DAIDO Kiyonori (??) - 26 December 1942 - 29 January 1943

LT / LCDR ISE Isao: 15 November 1935 - 1 December 1937
LT / LCDR UDAGAWA Akijiro: 1 December 1937 - 10 February 1939
LCDR / LCDR MASUDA Tanzo: 10 February 1939 - 15 November 1939
VACANT: 15 November 1939 - 28 November 1939
LCDR/ LCDR AWAIHARA Takashi: 28 November 1939 - 1 September 1940
LT / LT TABUCHI Satoru: 1 September 1940 - 1 April 1942
LT / LT MUTO Keigo: 1 April 1942 - 26 December 1942
LT / LT OMICHI Kiyonori: 26 December 1942 - 29 January 1943 (KIA)

I-2
Commanding Officers
(CEO) - LCDR WATANABE Tokushiro (37) - 20 October 1925 - 24 July 1926
LCDR WATANABE Tokushiro (37) - 24 July 1926 - 15 November 1927
LCDR KOBAYASHI Mitsuyoshi (37) - 15 November 1927 - 10 December 1928
LCDR KOSOKABE Yuzuru (38) - 10 December 1928 - 15 November 1929
RESERVE - 15 November 1929 - 15 November 1930
LCDR AKIYAMA Katsuzo (40) - 15 November 1930 - 1 December 1931
LCDR / CDR IMAIZUMI Yoshijiro (44) - 1 December 1931 - 22 October 1934
LCDR KUME Ikuji (46) - 22 October 1934 - 15 November 1935
LCDR KOBAYASHI Hajime (48) - 15 November 1935 - 1 December 1936
CDR FUKAYA Sokichi (46) - 1 December 1936 - 15 November 1937
CDR ENDO Keiyu (46) - 15 November 1937 - 15 December 1938
CDR FUJII Akiyoshi (49) - 15 December 1938 - 31 July 1941
CDR INADA Hiroshi (51) - 31 July 1941 - 16 March 1943
LT MORINAGA Masahiko (59) - 16 March 1943 - 15 April 1943
LT / LCDR ITAKURA Mitsumi (61) - 15 April 1943 - 20 December 1943
LCDR / CDR* YAMAGUCHI Kazuo (61) - 20 December 1943 - 7 April 1944 (KIA)

(CEO) LCDR / LCDR WATANABE Tokushiro: 20 October 1925 - 24 July 1926
LCDR / LCDR WATANABE Tokushiro: 24 July 1926 - 15 November 1927
LCDR / CDR KOBAYASHI Mitsuyoshi: 15 November 1927 - 10 December 1928
LCDR / CDR KOSOKABE Yuzuru: 10 December 1928 - 15 November 1930
LCDR / CDR AKIYAMA Shozo: 15 November 1930 - 1 December 1931
LCDR / LCDR IMAIZUMI Yoshijiro: 1 December 1931 - 22 October 1934
LCDR / CDR KUME Ikuji: 22 October 1934 - 15 November 1935
LCDR / LCDR KOBAYASHI Hajime: 15 November 1935 - 1 December 1936
CDR / CDR FUKAYA Sokichi: 1 December 1936 - 15 November 1937
CDR / CDR ENDO Keiyu: 15 November 1937 - 15 December 1938
CDR / CDR FUJII Akiyoshi: 15 December 1938 - 31 July 1941
LCDR / CDR INADA Hiroshi: 31 July 1941 - 16 March 1943
LCDR / LCDR MORINAGA Masahiko: 16 March 1943 - 15 April 1943
LT / LCDR ITAKURA Mitsuma: 15 April 1943 - 15 December 1943
VACANT: 15 December 1943 - 20 December 1943
LCDR / LCDR / CDR* YAMAGUCHI Kazuo: 20 December 1943 - 7 April 1944 (KIA)

I-2
Torpedo Officers
??? - 24 July 1926 - 1 December 1931
LT FUJII Akiyoshi (49) - 1 December 1931 - 25 March 1933
??? - 25 March 1933 - ???
LT IZUTSU Monshiro (57) - ??? - ???
??? - ??? - 15 January 1942
LT OBA Saichi (62) - 15 January 1942 - 6 February 1942
LT TOYOMASU Seihachi (59) - 6 February 1942 - 15 May 1942
LT SHINOHARA Shigeo (62) - 15 May 1942 - 25 February 1943
LT EBA Kunizo (66) - 25 February 1943 - ???
??? - ??? - 20 January 1944
LT / LCDR* FUSE Sadatake (??) - 20 January 1944 - 7 April 1944 (KIA)

(EO) LT / LT YOSHIMURA Karoku: 20 October 1925 - 24 July 1926
LT / LT YOSHIMURA Karoku: 24 July 1926 - 1 December 1927
LT / LT NAGAOKA Hirokichi: 1 December 1927 - 1 December 1930
LT / LT SOEJIMA Fujitaro: 1 December 1930 - 1 December 1931
LT / LT FUJII Akiyoshi: 1 December 1931 - 25 March 1933
LT / LT SHIBATA Gen’ichi: 25 March 1933 - 28 February 1935
LT / ??? IKEZAWA Masayuki: 28 February 1935 - ???
LCDR / LCDR IRIE Tatsushi: 10 July 1936 - 1 December 1936
LCDR / LCDR HANABUSA Hiroshi: 1 December 1936 - 20 March 1937
LT / LT TANAKA Makio: 20 March 1937 - 1 December 1937
LT / LCDR TANAKA Makio: 20 March 1937 - 1 December 1937
LCDR / LCDR IZUMI Masachika: 1 December 1937 - 1 November 1938
LT / LCDR KUSAKA Toshio: 1 November 1938 - 20 March 1939
LT / LT SHIMOSE Yoshio: 20 March 1939 - 15 November 1939
VACANT: 15 November 1939 - 15 October 1940
LT / LCDR IZUTSU Monshiro: 15 October 1940 - 15 April 1941
LT / LT TOYOMASU Seihachi: 15 April 1941 - 15 January 1942
LT / LT OBA Saichi: 15 January 1942 - 5 February 1942
LT / LT TOYOMASU Seihachi: 5 February 1942 - 15 May 1942
LT / LT SHINOHARA Shigeo: 15 May 1942 - 25 February 1943
LT / LT EBA Kunizo: 25 February 1943 - 15 August 1943
LT (S.D.) / LT (S.D.) MIHORI Shoichi: 15 August 1943 - 20 January 1944
LT / LT / LCDR* FUSE Sadatake: 20 January 1944 - 7 April 1944 (KIA)

I-2
Navigators
??? - 24 July 1926 - 2 February 1942
LTJG / LT JITOU Miyoshi (67) - 2 February 1942 - 28 August 1942
LT WATANABE Ichiro (??) - 28 August 1942 - ???
??? - ??? - 15 April 1943
LTJG KURASHIMA Yasusuke (68) - 15 April 1943 - ???
??? - ??? - 1 February 1944
LTJG / LT* MARUYAMA Shiro (70) - 1 February 1944 - 7 April 1944 (KIA)

(EO) LT / LT HAYASHI Kazuo: 1 December 1925 - 24 July 1926
LT / LT HAYASHI Kazuo: 24 July 1926 - 1 December 1926
LTJG / LT OKAMURA Otohiko: 1 December 1926 - 1 December 1927
LT / LT OHATA Tadashi: 1 December 1927 - 30 November 1929
VACANT: 30 November 1929 - 1 December 1930
LT / LT KADOTA Kazuharu: 1 December 1930 - 2 May 1932
LT / LT KAMIURA Junya: 2 May 1932 - 2 November 1932
VACANT: 2 November 1932 - 25 May 1933
LT / LT MURAOKA Tomiichi: 25 May 1933 - 15 October 1935
VACANT: 15 October 1935 - 1 June 1936
LTJG / LT YOSHIMURA Kan’ichi: 1 June 1936 - 1 December 1937
LTJG / LT SUZUKI Yoshimi: 1 December 1937 - 15 December 1938
LTJG / LTJG OGASAWARA Hiroshi: 15 December 1938 - 1 November 1939
VACANT: 1 November 1939 - 15 October 1940
LTJG / LT HASEGAWA Ichiro: 15 October 1940 - 1 February 1942
LTJG / LTJG JITO Mitsuyoshi: 1 February 1942 - 28 August 1942
LTJG / LCDR WATANABE Ichiro: 28 August 1942 - 15 April 1943
LTJG / LT KURASHINA Kosuke: 15 April 1943 - 1 February 1944
LTJG / LTJG / LT* MARUYAMA Shiro: 1 February 1944 - 7 April 1944 (KIA)

I-2
Chief Engineers
??? - 24 July 1926 - 1 December 1932
(E) LT YOSHIMURA Kishaku (Eng. 30) - 1 December 1932 - 15 November 1933
??? - 15 November 1933 - 26 December 1942
LT TAKAHASHI Kuniyoshi (??) - 26 December 1942 - ???
??? - ??? - 7 April 1944

(EO) LCDR / LCDR NAGATA Giichi: 1 November 1925 - 24 July 1926
LCDR / LCDR NAGATA Giichi: 24 July 1926 - 1 December 1927
LT / LT KIRINO Yoshitaka: 1 December 1927 - 10 December 1928
LT / LT IMADA Kankichi: 10 December 1928 - 1 April 1930
LT / LT MIYAZAWA Shogo: 1 April 1930 - 1 December 1930
LT / LCDR OTANI Yoshiya: 1 December 1930 - 1 December 1932
LT / LCDR YOSHIMURA Kishaku: 1 December 1932 - 15 November 1933
LT / LT MATSUMOTO Hiroshi: 15 November 1933 - 15 November 1935
LT / LCDR TAKIGAWA Susumu: 15 November 1935 - 1 December 1937
LCDR / LCDR TOIDA Hitoshi: 1 December 1937 - 23 May 1939
LT / LT KUSUMOTO Masaki: 23 May 1939 - 15 November 1939
VACANT: 15 November 1939 - 20 September 1941
LT / LT KUSUMOTO Masaki: 20 September 1941 - 1 May 1942
LT / LT TATENO Saburo: 1 May 1942 - 26 December 1942
LT / LT TAKAHASHI Kuniyoshi: 26 December 1942 - 15 June 1943
LT (S.D.) / LT (S.D.) NOMATA Kichizo: 15 June 1943 - 15 February 1944
LT (S.D.) / LT (S.D.) / LCDR* SAITO Katsunosuke: 15 February 1944 - 7 April 1944 (KIA)

I-3
Commanding Officers
(CEO) - LCDR OGINO Nakaichiro (37) - 1 May 1926 - 30 November 1926
LCDR OGINO Nakaichiro (37) - 30 November 1926 - 15 January 1928
LCDR SEKINO Akira (38) - 15 January 1928 - 15 December 1928
LCDR MICHINO Kiyoshi (41) - 15 December 1928 - 1 June 1929
LCDR HARADA Kaku (41) - 1 June 1929 - 1 December 1932
CDR ISHIZAKI Noboru (42) - 1 December 1932 - 15 November 1933
CDR UOZUMI Jisaku (42) - 15 November 1933 - 1 November 1934
LCDR MATSUMURA Midori (48) - 1 November 1934 - 20 October 1935
LCDR KUME Ikuji (46) - 20 October 1935 - 15 November 1935
LCDR NAGAI Hiroaki (48) - 15 November 1935 - 6 January 1936
LCDR KOBAYASHI Hajime (48) - 6 January 1936 - 1 December 1936
CDR MATSUO Yoshiyasu (47) - 1 December 1936 - 1 December 1937
LCDR ISHIKAWA Nobuo (49) - 1 December 1937 - 15 November 1938
CDR KOBAYASHI Hajime (48) - 15 November 1938 - 24 April 1939
LCDR IURA Shojiro (51) - 24 April 1939 - 20 October 1939
CDR FUJII Akiyoshi (49) - 20 October 1939 - 25 July 1940
LCDR KINASHI Takakazu (51) - 25 July 1940 - 4 November 1940
LCDR / CDR TONOZUKA Kinzo (50) - 4 November 1940 - 20 May 1942
LCDR / CDR / RADM* TOGAMI Ichiro (51) - 20 May 1942 - 9 December 1942 (KIA)

(CEO) LCDR / LCDR OGINO Nakaichiro: 1 May 1926 - 30 November 1926
LCDR / LCDR OGINO Nakaichiro: 30 November 1926 - 15 January 1928
LCDR / LCDR SEKINO Akira: 15 January 1928 - 15 December 1928
LCDR / LCDR MICHINO Kiyoshi: 15 December 1928 - 1 June 1929
LCDR / CDR HARADA Satoru: 1 June 1929 - 1 December 1932
CDR / CDR ISHIZAKI Noboru: 1 December 1932 - 15 November 1933
CDR / CDR UOZUMI Jisaku: 15 November 1933 - 1 November 1934
LCDR / LCDR MATSUMURA Midori: 1 November 1934 - 21 October 1935
(ADD) LCDR / CDR KUME Ikuji: 21 October 1935 - 15 November 1935
His regular post was CO of I-2.
(ADD) LCDR / LCDR NAGAI Hiroaki: 15 November 1935 - 6 January 1936
His regular post was CO of I-1.
(ADD) LCDR / LCDR KOBAYASHI Hajime: 6 January 1936 - 26 March 1936
His regular post was CO of I-2.
LCDR / LCDR ENDO Keiyu: 26 March 1936 - 2 November 1936
(ADD) LCDR / LCDR KOBAYASHI Hajime: 2 November 1936 - 1 December 1936
His regular post was CO of I-2.
LCDR / CDR MATSUO Yoshiyasu: 1 December 1936 - 1 December 1937
LCDR / CDR ISHIKAWA Nobuo: 1 December 1937 - 15 November 1938
CDR / CDR KOBAYASHI Hajime: 15 November 1938 - 24 April 1939
LCDR / LCDR IURA Shojiro: 24 April 1939 - 20 November 1939
(ADD) CDR / CDR FUJII Akiyoshi: 20 November 1939 - 26 July 1940
His regular post was CO of I-2.
LCDR / LCDR KINASHI Yoichi: 26 July 1940 - 5 November 1940
LCDR / CDR TONOZUKA Kinzo: 5 November 1940 - 20 November 1942
CDR / CDR / CAPT* TOGAMI Ichiro: 20 November 1942 - 9 December 1942 (KIA)

I-3
Torpedo Officers
??? - 30 November 1926 - ???
LT HIROKAWA Takashi (51) - ??? - ???
LT UNO Kameo (53) - ??? - ???
??? - ??? - 2 February 1942
LTJG / LT / LCDR* YOKOO Takashi (64) - 2 February 1942 - 9 December 1942 (KIA)

(EO) LT / LT FUKUDA Isamu: 20 August 1926 - 30 November 1926
LT / LT FUKUDA Isamu: 30 November 1926 - 15 November 1927
VACANT: 15 November 1927 - 1 December 1927
LT / LT HATTORI Kunio: 1 December 1927 - 1 July 1929
VACANT: 1 July 1929 - 30 November 1929
LT / LT OKUMURA Arata: 30 November 1929 - 5 February 1931
LT / LT HATANAKA Sumihiko: 5 February 1931 - 25 March 1933
LT / LT Baron TSUTSUMI Masayuki: 25 March 1933 - 1 November 1933
LT / LCDR OTANI Kiyonori: 1 November 1933 - 15 November 1934
LT / LT HIROKAWA Takashi: 15 November 1934 - 15 February 1936
LT / LT NAKAJIMA Seiji: 15 February 1936 - 1 December 1937
LT / LCDR UNO Kameo: 1 December 1937 - 20 March 1939
LT / LT SHIMIZU Tsuruzo: 20 March 1939 - 6 September 1939
LT / LT KUDO Kaneo: 6 September 1939 - November 1939
VACANT: November 1939 - 15 October 1940
LCDR / LCDR YAMAMOTO Hideo: 15 October 1940 - 15 April 1941
LT / LT TOKUTOMI Toshisada: 15 April 1941 - 1 February 1942
LT / LT / LCDR* YOKO’O Takayuki: 1 February 1942 - 9 December 1942 (KIA)

I-3
Navigators
??? - 30 November 1926 - ???
LT FUJITANI Ataka (46) - ??? - 15 March 1929
LT OKA Iwao (50) - 15 March 1929 - 1 July 1929
??? - 1 July 1929 - 1 December 1930
LT NAKAMURA Kaoru (52) - 1 December 1930 - 1 December 1931
??? - 1 December 1931 - 1 May 1942
LTJG / LT / LCDR* ASHINO Shoichi (66) - 1 May 1942 - 9 December 1942 (KIA)

(EO) LT / LT FUJITANI Ataka: 10 August 1926 - 30 November 1926
LT / LT FUJITANI Ataka: 30 November 1926 - 15 March 1929
LT / LT OKA Iwao: 15 March 1929 - 1 July 1929
VACANT: 1 July 1929 - 1 December 1930
LT / LT NAKAMURA Kaoru: 1 December 1930 - 1 December 1931
LT / LT KAMIURA Junya: 1 December 1931 - 2 May 1932
LT / LT OHIRA Masajiro: 2 May 1932 - 1 December 1932
VACANT: 1 December 1932 - 25 March 1933
LT / LT OHASHI Katsuo: 25 March 1933 - 28 February 1935
LT / LT OTA Takeshi: 28 February 1935 - 21 October 1935
VACANT: 21 October 1935 - 22 July 1936
LT / LT SEKIDO Yoshimitsu: 22 July 1936 - 1 December 1936
LT / LT IKI Hisoka: 1 December 1936 - 1 December 1937
LTJG / LT DOI Mareshige: 1 December 1937 - 15 August 1938
LT / LT ITAYA Ryuichi: 15 August 1938 - 15 December 1938
LTJG / LTJG FUJITA Hidenori: 15 December 1938 - 10 February 1939
LTJG / LT SADAKA Katsumi: 10 February 1939 - 15 November 1939
VACANT: 15 November 1939 - 15 October 1940
LTJG / LT ENOMOTO Yasuo: 15 October 1940 - 15 July 1941
LTJG / LT SEKIGUCHI Rokuro: 15 July 1941 - 1 May 1942
LT / LT / LCDR* ASHINO Shoichi: 1 May 1942 - 9 December 1942 (KIA)

I-3
Chief Engineers
??? - 30 November 1926 - 1 December 1930
(E) LT ICHISE Saburo (Eng. 28) - 1 December 1930 - 1 December 1931
??? - 1 December 1931 - ???
(E) LT KOMOOKA Toyo (Eng. 31) - ??? - ???
??? - ??? - 9 December 1942

(EO) LCDR KUBO Keiji: 1 May 1926 - 30 November 1926
LCDR / LCDR KUBO Keiji: 30 November 1926 - 1 November 1927
LT / LCDR YAKUSHIJI Takuma: 1 November 1927 - 10 December 1928
LT / LT MATSUO Tsutomu: 10 December 1928 - 1 June 1929
(ADD) LT / LT MATSUO Tsutomu: 1 June 1929 - 30 November 1929
His regular post was Engineer Officer of I-21.
VACANT: 30 November 1929 - 30 November 1929
LT / LT KOMO’OKA Toyo’o: 30 November 1929 - 1 December 1930
LT / LCDR IWASE Saburo: 1 December 1930 - 1 December 1931
LT / LCDR TAKUWA Susumu: 1 December 1931 - 1 December 1932
LT / LT TSUCHIYA Koji: 1 December 1932 - 15 November 1934
LCDR / LCDR UDAKA Tadatoshi: 15 November 1934 - 2 November 1936
LCDR / LCDR SHIMIZU Yoshitaka: 2 November 1936 - 1 December 1937
LCDR / LCDR NONAKA Enzo: 1 December 1937 - 1 March 1938
LCDR / LCDR SHIMA Tetsujiro: 1 March 1938 - 23 May 1939
LT / LT HASEGAWA Tadashi: 23 May 1939 - 15 November 1939
LTJG (S.D.) / LTJG (S.D.) / LT* KOIKE Keinosuke: 10 September 1942 - 9 December 1942 (KIA)

I-4
Commanding Officers
(CEO) - CDR TAKATSUKA Seigo (38) - 15 May 1929 - 24 December 1929
CDR TAKATSUKA Seigo (38) - 24 December 1929 - 1 April 1930
LCDR KODA Takero (41) - 1 April 1930 - 1 December 1931
LCDR NAKAOKA Nobuki (45) - 1 December 1931 - 4 October 1932
LCDR NAKAOKA Masao (46) - 4 October 1932 - 15 November 1935
LCDR MIZOHATA Sadakazu (46) - 15 November 1935 - 30 June 1936
CDR MIZUGUCHI Hyoe (46) - 30 June 1936 - 1 December 1937
LCDR KOBAYASHI Hajime (48) - 1 December 1937 - 15 November 1938
LCDR / CDR EMI Tetsuhiro (50) - 15 November 1938 - 1 November 1941
CDR NAKAGAWA Hajime (50) - 1 November 1941 - 15 August 1942
CDR KAWASAKI Mutsuro (51) - 15 August 1942 - 6 November 1942
LCDR / CDR* UENO Toshitake (56) - 6 November 1942 - 20 December 1942 (KIA)

(CEO) LCDR / CDR TAKATSUKA Shogo: 15 May 1929 - 24 December 1929
CDR / CDR TAKATSUKA Seigo: 24 December 1929 - 1 April 1930
CDR / CDR KOUDA Takeo: 1 April 1930 - 1 December 1931
LCDR / LCDR NAKAOKA Nobuki: 1 December 1931 - 5 October 1932
LCDR / LCDR TERAOKA Masao: 5 October 1932 - 21 October 1935
(ADD) LCDR TAKEZAKI Kaoru: 21 October 1935 - 15 November 1935
His regular post was CO of I-5.
LCDR / LCDR MIZOHATA Sadaichi: 15 November 1935 - 26 December 1935
(ADD) CDR / CDR TAKEZAKI Kaoru: 26 December 1935 - 30 June 1936
His regular post was CO of I-5.
CDR / CDR MINAGUCHI Hyoe: 30 June 1936 - 1 December 1937
LCDR / CDR KOBAYASHI Hajime: 1 December 1937 - 15 November 1938
LCDR / CDR EMI Tetsushiro: 15 November 1938 - 31 November 1941
CDR / CDR NAKAGAWA Hajime: 31 November 1941 - 15 August 1942
LCDR / LCDR KAWASAKI Rikuro: 31 November 1941 - 6 November 1942
LCDR / LCDR / CDR* UENO Toshitake: 6 November 1942 - 20 December 1942 (KIA)

I-4
Torpedo Officers
(EO) - LT KATO Yukio (47) - 1 July 1929 - 24 December 1929
LT KATO Yukio (47) - 24 December 1929 - 22 April 1930
??? - 22 April 1930 - ???
LT KANEMOTO Shoji (61) - ??? - ???
LT / LCDR* OZAKI Giichi (62) - ??? - 20 December 1942 (KIA)

(EO) LT KATO Yukio: 1 July 1929 - 24 December 1929
LT / LT KATO Yukio: 24 December 1929 - 22 April 1930
LT / LT NISHINO Kozo: 22 April 1930 - 1 December 1930
LT / LT NAGAI Chodayu: 1 December 1930 - 1 December 1931
LT / LT YAMAMOTO Akira: 1 December 1931 - 5 October 1932
VACANT: 5 October 1932 - 1 December 1932
LT / LT TONOZUKA Kinzo: 1 December 1932 - 15 November 1934
LT / LT YOKOTA Minoru: 15 November 1934 - 15 February 1936
LT / LT KUROKAWA Hideyuki: 15 February 1936 - 1 December 1937
LT / LT KONO Masamichi: 1 December 1937 - 30 January 1938
LT / LT NIINA Yoshio: 30 January 1938 - 15 December 1938
LT / LCDR YOSHIMATSU Tamori: 15 December 1938 - 15 November 1939
VACANT: 15 November 1939 - 15 October 1940
LT / LCDR NORITA Sadatoshi: 15 October 1940 - 15 July 1941
LT / LT KANEMOTO Shoji: 15 July 1941 - 15 May 1942
LT / LT / LCDR* OZAKI Giichi: 15 May 1942 - 20 December 1942 (KIA)

I-4
Navigators
??? - 24 December 1929 - 15 October 1940
LTJG SUWA Koichiro (64) - 15 October 1940 - ???
??? - ??? - 27 July 1942
LTJG / LT* UEDA Atsuji (67) - 27 July 1942 - 20 December 1942 (KIA)

(EO) LT / LT YAMADA Kaoru: 26 September 1929 - 24 December 1929
LT / LT YAMADA Kaoru: 24 December 1929 - 2 November 1931
VACANT: 2 November 1931 - 1 December 1931
LT / LT UTSUGI Hidejiro: 1 December 1931 - 1 November 1934
LT / LT KISHIGAMI Koichi: 1 November 1934 - 15 November 1935
VACANT: 15 November 1935 - 1 December 1936
LT / LT TSURUMARU Hiroji: 1 December 1936 - 15 November 1937
LTJG / LT MORIMOTO Yoshihisa: 15 November 1937 - 10 June 1938
LT / LT NINOKATA Kanefumi: 10 June 1938 - 15 November 1938
VACANT: 15 November 1938 - 15 December 1938
LT / LT SAKAMOTO Kaneyoshi: 15 December 1938 - 1 November 1939
VACANT: 1 November 1939 - 15 October 1940
LTJG / LT SUWA Koichiro: 15 October 1940 - 21 May 1941
LTJG / LT SHIIZUKA Mitsuo: 21 May 1941 - 25 July 1942
LTJG / LTJG / LT* UEDA Junji: 25 July 1942 - 20 December 1942 (KIA)

I-4
Chief Engineers
??? - 24 December 1929 - 20 December 1942

(EO) LT / LT YOSHII Joichi: 15 May 1929 - 24 December 1929
LT / LCDR YOSHII Joichi: 24 December 1929 - 1 December 1931
LT / LT MUTAKADO Yasuzo: 1 December 1931 - 26 September 1932
(ADD) LT / LT TAKUWA Susumu: 26 September 1932 - 15 November 1932
His regular post was Engineer Officer of I-3.
LT / LCDR SAKAO Mantaro: 15 November 1932 - 15 November 1933
LT / LT KATAGIRI Toshiro: 15 November 1933 - 15 November 1934
LT / LCDR SAKAI Tomotaro 15 November 1934 - 15 July 1936
LT / LT IMAI Kazuo: 15 July 1936 - 10 November 1936
LT / LCDR OTOMARU Torao: 10 November 1936 - 15 December 1938
LCDR / LCDR TAKETANI Keijiro: 15 December 1938 - 15 November 1939
VACANT: 15 November 1939 - 25 March 1941
LT / LT TAMURA Ryozo: 25 March 1941 - 20 September 1941
LT / LT / LCDR* TOMODA Isamu: 20 September 1941 - 20 December 1942 (KIA)

I-5
Commanding Officers
(CEO) - LCDR SATO Shiro (43) - 1 December 1931 - 31 July 1932
LCDR / CDR SATO Shiro (43) - 31 July 1932 - 15 July 1934
LCDR KIJIMA Moritsugu (44) - 15 July 1934 - 25 August 1934
CDR SATO Shiro (43) - 25 August 1934 - 15 November 1934
LCDR TAKEZAKI Kaoru (45) - 15 November 1934 - 21 October 1935
LCDR / CDR MIZUGUCHI Hyoe (46) - 21 October 1935 - 1 December 1936
CDR IWAGAMI Hidetoshi (46) - 1 December 1936 - 1 December 1937
LCDR UCHINO Shinji (49) - 1 December 1937 - 15 December 1938
CDR SHIMIZU Taro (48) - 15 December 1938 - 15 November 1939
CDR NISHINO Kozo (48) - 15 November 1939 - 30 November 1940
CDR SHICHIJI Tsuneo (49) - 30 November 1940 - 5 February 1942
CDR NAKAMURA Otoji (52) - 5 February 1942 - 28 February 1942
LCDR UTSUKI Hidejiro (52) - 28 February 1942 - 31 October 1942
LCDR SEKIDO Yoshimitsu (57) - 31 October 1942 - 20 April 1943
LT / LCDR MORINAGA Masahiko (59) - 20 April 1943 - 30 April 1944
LCDR / CDR* DOI Mareshige (60) - 30 April 1944 - 19 July 1944 (KIA)

(CEO) LCDR / LCDR SATO Shiro: 1 December 1931 - 31 July 1932
LCDR / CDR SATO Shiro: 31 July 1932 - 16 July 1934
LCDR / LCDR KIJIMA Moritsugu: 16 July 1934 - 25 August 1934
CDR / CDR SATO Shiro: 25 August 1934 - 15 November 1934
LCDR / CDR TAKEZAKI Kaoru: 15 November 1934 - 2 November 1936
(ADD) CDR / CDR MINAGUCHI Hyoe: 2 November 1936 - 1 December 1936
His regular post was CO of I-4.
CDR / CDR IWAGAMI Hidehisa: 1 December 1936 - 1 December 1937
LCDR / CDR UCHINO Shinji: 1 December 1937 - 15 December 1938
CDR / CDR SHIMIZU Taro: 15 December 1938 - 15 November 1939
CDR / CDR NISHINO Kozo: 15 November 1939 - 19 October 1940
CDR / CDR SHICHIJI Tsuneo: 19 October 1940 - 5 February 1942
LCDR / LCDR NAKAMURA Otsuji: 5 February 1942 - 28 February 1942
LCDR / LCDR UTSUGI Hidejiro: 28 February 1942 - 31 October 1942
LCDR / LCDR SEKIDO Yoshimitsu: 31 October 1942 - 20 April 1943
LCDR / LCDR MORINAGA Masahiko: 20 April 1943 - 30 April 1944
LCDR / LCDR / CDR* DOI Mareshige 30 April 1944 - 19 July 1944 (KIA)

I-5
Torpedo Officers
??? - 31 July 1932 - 10 April 1933
LT MATSUMURA Kanji (50) - 10 April 1933 - 28 February 1935
??? - 28 February 1935 - 1939
LT ITAKURA Mitsumi (61) - 1939 - ???
??? - ??? - 30 September 1942
LT OGAWA Kenkichi (65) - 30 September 1942 - ???
??? - ??? - 19 July 1944

(EO) LT / LT UCHINO Shinji: 1 February 1932 - 31 July 1931
LT / LT UCHINO Shinji: 31 July 1931 - 5 October 1932
LT / LT YAMAMOTO Akira: 5 October 1932 - 10 April 1933
LT / LT ATSUMURA Kanji: 10 April 1933 - 28 February 1935
LT / LT KOHIGA Masaru: 28 February 1935 - 15 November 1935
VACANT: 15 November 1935 - 20 April 1936
LT / LT IUCHI Shiro: 20 April 1936 - 1 December 1937
LT / LT OTSUKA Hiroshi: 1 December 1937 - 4 December 1937
LT / LT KOHIGA Masaru: 4 December 1937 - 10 November 1938
VACANT: 10 November 1938 - 15 December 1938
LT / LT WATANABE Katsuji: 15 December 1938 - 20 October 1939
VACANT: 20 October 1939 - 15 November 1939
LT / LT KUDO Kaneo: 15 November 1939 - 1 April 1940
VACANT: 1 April 1940 - 15 October 1940
LT / LT HASEGAWA Shun: 15 October 1940 - 13 November 1940
LT / LCDR NAKAI Makoto: 13 November 1940 - 15 October 1941
LT / LT SEKI Noritaka: 15 October 1941 - 30 September 1942
LT / LT OGAWA Kenkichi: 30 September 1942 - 10 August 1943
LTJG (S.D.) / LTJG (S.D.) / LT* WATANABE Gun: 25 April 1944 - 19 July 1944 (KIA)

I-5
Navigators
(EO) - LT KAYABARA Yasuchika (49) - 1 February 1932 - 31 July 1932
LT KAYABARA Yasuchika (49) - 31 July 1932 - 28 March 1933
??? - 28 March 1933 - ???
LT TAKIZAWA Koreaki (57) - ??? - 30 July 1938
LT TOSHIMA Toshio (60) - 30 July 1938 - 1 November 1938
??? - 1 November 1938 - 25 January 1943
LTJG FUJIMURA Akira (68) - 25 January 1943 - ???
??? - ??? - 1 March 1944
LTJG TANAKA Chiaki (69) - 1 March 1944 - 20 April 1944
LTJG / LT / LCDR* OKAZAKI Hiroshi (70) - 20 April 1944 - 19 July 1944 (KIA)

(EO) LT / LT KAYABARA Yasuchika: 1 February 1932 - 31 July 1931
LT / LT KAYABARA Yasuchika: 31 July 1931 - 28 March 1933
LT / LT ICHIKAWA Susumu: 28 March 1933 - 15 November 1933
LT / LT NAKAMURA Shozo: 15 November 1933 - 2 June 1934
LT / LT MATSUMOTO Hisashi: 2 June 1934 - 15 November 1935
VACANT: 15 November 1935 - 1 June 1936
LTJG / LTJG TANAKA Kanemitsu: 1 June 1936 - 1 December 1936
LT / LT MUTO Ken’ichi: 1 December 1936 - 1 November 1937
LTJG / LTJG FUMOTO Tatei: 1 November 1937 - 19 March 1938
LT / LT TAKIZAWA Koresuke: 19 March 1938 - 30 July 1938
LT / LT TOSHIMA Toshio: 30 July 1938 - 1 November 1938
VACANT: 1 November 1938 - 15 December 1938
VACANT: 1 November 1938 - 1 November 1938
LT / LT TACHIGAMI Rikuta: 1 November 1938 - 1 November 1939
LTJG / LTJG ICHITOMI Seita: 1 November 1939 - 1 April 1940
VACANT: 1 April 1940 - 15 October 1940
LTJG / LT MORITA Ryoji: 15 October 1940 - 1 September 1941
LTJG / LT ISOKANE Yuzo: 1 September 1941 - 1 May 1942
LTJG / LTJG KAWAKUBO Saburo: 1 May 1942 - 25 January 1943
LTJG / LT FUJIMURA Akira: 25 January 1943 - 15 November 1943
LTJG / LTJG OBORI Tadashi: 15 November 1943 - 1 March 1944
LTJG / LT TANAKA Chiaki: 1 March 1944 - 20 April 1944
LTJG / LT / LCDR* OKAZAKI Hiroshi: 20 April 1944 - 19 July 1944 (KIA)

I-5
Chief Engineers
??? - 31 July 1932 - 19 July 1944

(EO) LT / LT ATSUTA Sataro: 1 December 1931 - 31 July 1931
LT / LCDR ATSUTA Sataro: 31 July 1931 - 1 December 1932
LCDR / LCDR KAWAOKA Fujimatsu: 1 December 1932 - 1 November 1933
LT / LT HAGIWARA Kenji: 1 November 1933 - 21 May 1934
LT / LT IMAMURA Yasuoki: 21 May 1934 - 31 October 1935
LT / LCDR MIYOSHI Kohei: 31 October 1935 - 1 December 1937
LCDR / LCDR ITO Kiroku: 1 December 1937 - 15 May 1939
LT / LT TASHIRO Amito: 15 May 1939 - 15 November 1939
LT (S.D.) / LT (S.D.) OZAWA Shinzaburo: 10 September 1942 - 15 May 1943
LT (S.D.) / LT (S.D.) IZUMI Hiraku: 15 May 1943 - 25 January 1944
VACANT: 25 January 1944 - 15 February 1944
LTJG (S.D.) / LTJG (S.D.) / LT* WATANUKI Etsuzo: 15 February 1944 - 19 July 1944 (KIA)

I-6
Commanding Officers
(CEO) - LCDR / CDR KIJIMA Moritsugu (44) - 25 August 1934 - 15 May 1935
CDR KIJIMA Moritsugu (44) - 15 May 1935 - 25 May 1935
LCDR NAGAI Takeo (47) - 25 May 1935 - 1 December 1936
CDR OKADA Yusaku (47) - 1 December 1936 - 15 November 1937
CDR OYAMA Toyojiro (47) - 15 November 1937 - 1 November 1939
CDR NAGAI Hiroaki (47) - 1 November 1939 - 30 October 1940
CDR NARAHARA Shogo (48) - 30 October 1940 - 1 February 1941
LCDR / CDR INABA Michimune (51) - 1 February 1941 - 23 May 1942
LCDR NAKAMURA Shozo (54) - 23 May 1942 - 15 December 1942
LCDR IZUTSU Monshiro (58) - 15 December 1942 - 20 May 1943
LCDR SHIMOSE Kiichiro (58) - 20 May 1943 - 30 April 1944
LT / LCDR SHINOHARA Shigeo (62) - 30 April 1944 - 12 May 1944
CDR HORI Takeo (50) - 12 May 1944 - 27 May 1944
LCDR / CDR* FUMON Shozo (63) - 27 May 1944 - 16 June 1944 (KIA)

(CEO) LCDR / LCDR KIJIMA Moritsugu: 25 August 1934 - 15 May 1935
LCDR / CDR KIJIMA Moritsugu: 15 May 1935 -25 May 1935
LCDR / CDR NAGAI Takeo: 25 May 1935 - 1 December 1936
CDR / CDR OKADA Yusaku: 1 December 1936 - 15 November 1937
LCDR / CDR OYAMA Toyojiro: 15 November 1937 - 1 November 1939
CDR / CDR NAGAI Hiroaki: 1 November 1939 - 30 October 1940
CDR / CDR NARAHARA Shogo: 30 October 1940 - 31 January 1941
LCDR / LCDR INABA Michimune: 31 January 1941 - 23 May 1942
LCDR / LCDR NAKAMURA Shozo: 23 May 1942 - 10 December 1942
VACANT: 10 December 1942 - 15 December 1942
LCDR / LCDR IZUTSU Monshiro: 15 December 1942 - 20 May 1943
LCDR / LCDR SHIMOSE Yoshiro: 20 May 1943 - 1 April 1944
VACANT: 1 April 1944 - 30 April 1944
LT / LCDR SHIGEHARA Shigeo: 30 April 1944 - 12 May 1944
(ADD) CAPT / CAPT HORI Takeo: 12 May 1944 - 27 May 1944
His regular post was Membar of Yokosuka Naval Yard Submarine Department.
LCDR / LCDR / CDR* FUMON Shozo: 27 May 1944 - 30 June 1944 (KIA)
The sunk date was unknown. It was authorized as 30 June 1944.

I-6
Torpedo Officers
??? - 31 March 1937 - 15 May 1942
LT SAEKI Takuo (59) - ??? - ???
LTJG / LT ICHIMURA Rikinosuke (64) - 15 May 1942 - 10 December 1942
LT SUGAMASA Tetsuaki (65) - 10 December 1942 - ???
??? - ??? - 16 June 1944

(EO) LT / LT INADA Hiroshi: 1 November 1934 - 15 May 1935
LT / LT INADA Hiroshi: 15 May 1935 - 15 February 1936
LT / LT YAMAMOTO Hideo: 15 February 1936 - 1 December 1937
LT / LT KOHIGA Masaru: 1 December 1937 - 4 December 1937
LT / LT OTSUKA Hiroshi: 4 December 1937 - 1 November 1938
VACANT: 1 November 1938 - 15 May 1939
(ADD) LT / LT SHINNYO Yoshio: 15 May 1939 - 1 June 1939
His regular post was Torpedo Officer of I-123.
LT / LT SHINNYO Yoshio: 1 June 1939 - 24 April 1940
VACANT: 24 April 1940 - 1 May 1940
LT / LT NAGAI Katsuhiko: 1 May 1940 - 10 August 1940
VACANT: 10 August 1940 - 15 October 1940
LT / LT NAKAI Makoto: 15 October 1940 - 13 November 1940
LT / LCDR HASEGAWA Shun: 13 November 1940 - 20 December 1940
LT / LT SAEKI Takuo: 20 December 1940 - 15 May 1942
LT / LT ICHIMURA Rikinosuke: 15 May 1942 - 10 September 1942
LT / LT SUGAMASA Tetsuaki: 5 December 1942 - 15 August 1943
LTJG (S.D.) / LTJG (S.D.) SATO Kichitaro: 7 May 1944 - 5 June 1944
LTJG (S.D.) / LTJG (S.D.) / LT* WATANABE Shiro: 5 June 1944 -30 June 1944 (KIA)
The sunk date was unknown. It was authorized as 30 June 1944.

I-6
Navigators
??? - 31 March 1937 - 10 March 1939
LT KONDO Kenji (60) - 10 March 1939 - ???
??? - ??? - 2 February 1942
LTJG TOKUNAGA Masahiko (67) - 2 February 1942 - 26 October 1942
??? - 26 October 1942 - 30 January 1944
LTJG / LT / LCDR* TAKASUGI Susumu (70) - 30 January 1944 - 16 June 1944 (KIA)

(EO) LT / LT NISHINO Shigeru: 15 December 1934 - 15 May 1935
LT / LT NISHINO Shigeru: 15 May 1935 - 1 December 1936
LT / LT ABE Koichi: 1 December 1936 - 1 December 1937
LTJG / LT KONDO Ken’ichi: 1 December 1937 - 10 March 1939
VACANT: 10 March 1939 - 1 June 1939
LTJG / LTJG KOYA Moriya: 1 June 1939 - 15 November 1939
LTJG / LTJG MIYAMOTO Isao: 15 November 1939 - 15 August 1940
VACANT: 15 August 1940 - 15 November 1940
LTJG / LT NAKAGAWA Kyuji: 15 November 1940 - 1 February 1942
LTJG / LTJG TOKUNAGA Masahiko: 1 February 1942 - 26 October 1942
VACANT: 26 October 1942 - 5 December 1942
LTJG / LT FUSE Sadatake: 5 December 1942 - 10 August 1943
LTJG / LTJG CHIKAMORI Akira: 10 August 1943 - 31 January 1944
LTJG / LT / LCDR* TAKASUGI Susumu: 31 January 1944 - 30 June 1944 (KIA)
The sunk date was unknown. It was authorized as 30 June 1944.

I-6
Chief Engineers
??? - 15 May 1935 - 1 August 1942
(E) LT URATA Masashige (??) - 1 August 1942 - ???
??? - ??? - 15 April 1943
LT KADOTA Kiyoshi (??) - 15 April 1943 - ???
??? - ??? - 16 June 1944

(EO) LT / LT OKA Torao: 25 August 1934 - 15 May 1935
LT / LCDR OKA Torao: 15 May 1935 - 15 November 1935
LT / LT MATSUMOTO Hiroshi: 15 November 1935 - 15 July 1936
LCDR / LCDR SAKAI Tomotaro: 15 July 1936 - 1 December 1937
LCDR / LCDR KOHIGA Masayoshi: 1 December 1937 - 1 December 1938
LT / LT TASHIRO Tsunato: 1 December 1938 - 15 May 1939
LT / LT KANIE Tadashi: 15 May 1939 - 1 May 1940
LT / LT TABUCHI Satoru: 1 May 1940 - 1 September 1940
VACANT: 1 September 1940 - 15 October 1940
LT / LT SHIMIZU Kiyo’omi: 15 October 1940 - 20 September 1941
LT / LT KUROISO Takehiko: 20 September 1941 - 31 July 1942
LT / LT URATA Masashige: 31 July 1942 - 15 April 1943
LT / LT KAKUTA Kiyoshi: 15 April 1943 - 1 September 1943
LTJG (Res.) / LT (Res.) SENDA Shikari: 1 September 1943 - 28 April 1944
LTJG (Res.) / LT (Res.) / LCDR* HATAKEYAMA Takeo: 28 April 1944 - 30 June 1944
The sunk date was unknown. It was authorized as 30 June 1944.

I-7
Commanding Officers
(CEO) - CDR TERAOKA Masao (46) - 21 September 1936 - 31 March 1937
CDR TERAOKA Masao (46) - 31 March 1937 - 20 December 1937
CDR FUJIMOTO Den (48) - 20 December 1937 - 28 June 1938
CDR IWAGAMI Hidetoshi (46) - 28 June 1938 - 15 November 1938
CDR OKAMOTO Yoshisuke (47) - 15 November 1938 - 20 October 1939
CDR ISHIKAWA Nobuo (49) - 20 October 1939 – 30 October 1940
CDR NAGAI Hiroaki (48) - 30 October 1940 - 20 August 1941
CDR KOIZUMI Kiichi (49) - 20 August 1941 - 5 December 1942
LCDR TABATA Naoshi (58) - 5 December 1942 - 16 March 1943
LCDR / CDR* NAGAI Katsuhiko (57) - 16 March 1943 - 21 June 1943 (KIA)

(CEO) LCDR / LCDR TERAOKA Masao: 3 July 1936 - 21 September 1936
LCDR / CDR TERAOKA Masao: 21 September 1936 - 20 December 1937
CDR / CDR FUJIMOTO Tsutau: 20 December 1937 - 29 June 1938
CDR / CDR IWAGAMI Hidehisa: 29 June 1938 - 15 November 1938
CDR / CDR OKAMOTO Gisuke: 15 November 1938 - 20 October 1939
CDR / CDR ISHIKAWA Nobuo: 20 October 1939 - 30 October 1940
CDR / CDR NAGAI Hiroaki: 30 October 1940 - 20 August 1941
CDR / CDR KOIZUMI Kiichi: 20 August 1941 - 5 December 1941
(ADD) LCDR / LCDR TABATA Tadashi: 5 December 1941 - 16 March 1943
His regular post was CO of I-175.
LCDR / LCDR / CDR* NAGAI Katsuhiko: 16 March 1943 - 21 June 1943 (KIA)

I-7
Torpedo Officers
??? - 31 March 1937 - ???
LT OHASHI Katsuo (53) - ??? - ???
??? - ??? - 6 February 1942
LT TAKEUCHI Yoshitake (59) - 6 February 1942 - 30 September 1942
LT SUGAMASA Tetsuaki (65) - 30 September 1942 - 10 December 1942
??? - 10 December 1942 - 1 February 1943
LT HAYAKAWA Norimasa (64) - 1 February 1943 - 15 April 1943
LT / LCDR* SAKAGUCHI Rokuro (65) - 15 April 1943 - 21 June 1943 (KIA)

(EO) LT / LT UNO Kameo: 22 July 1936 - 21 September 1936
LT / LT UNO Kameo: 21 September 1936 - 1 December 1936
LT / LT INOUE Tadakane: 1 December 1936 - 3 June 1937
LCDR / LCDR HARADA Hakue: 1 December 1937 - 15 December 1938
LCDR / LCDR OHASHI Katsuo: 15 December 1938 - 15 November 1939
LT / LCDR NAKAJIMA Sakae: 15 November 1939 - 20 December 1940
LCDR / LCDR NIINA Yoshio: 20 December 1940 - 5 February 1942
LT / LT TAKEUCHI Yoshitaka: 5 February 1942 - 30 September 1942
LT / LT SUGAMASA Tetsuaki: 30 September 1942 - 5 December 1942
VACANT: 5 December 1942 - 1 February 1943
LT / LT HAYAKAWA Hiromasa: 1 February 1943 - 15 April 1943
LT / LT / LCDR* SEKIGUCHI Rokuro: 15 April 1943 - 21 June 1943 (KIA)

I-7
Navigators
??? - 31 March 1937 - ???
LTJG ORITA Zenji (59) - ??? - ???
LTJG TSUKUDO Tetsuo (63) - April 1941 - 15 October 1941
??? - 15 October 1941 - 22 May 1942
LT EBA Kunizo (66) - 22 May 1942 - 28 August 1942
LT JITOU Miyoshi (67) - 28 August 1942 - ???
??? - ??? - 20 February 1943
LTJG / LT / LCDR* HANABUSA Yoshio (67) - 20 February 1943 - 21 June 1943 (KIA)

(EO) LT / LT OMAE Saichi: 22 July 1936 - 21 September 1936
LT / LT OMAE Saichi: 21 September 1936 - 1 December 1936
LTJG / LTJG ORITA Zenji: 1 December 1936 - 28 July 1937
VACANT: 28 July 1937 - 1 December 1937
LT / LT KUDO Kaneo: 1 December 1937 - 1 May 1939
LT / LT YAMAGUCHI Kozaburo: 1 May 1939 - 15 October 1940
LT / LT KANEMOTO Shoji: 15 October 1940 - 15 April 1941
LT / LT TSUKUDO Tatsuo: 15 April 1941 - 15 October 1941
LT / LT ENOMOTO Yasuo: 15 October 1941 - 23 May 1942
LT / LT EBA Kunizo: 23 May 1942 - 28 August 1942
LTJG / LTJG JITO Mitsuyoshi: 28 August 1942 - 20 February 1943
LTJG / LT / LCDR* HANABUSA Yoshio: 20 February 1943 - 21 June 1943 (KIA)

I-7
Chief Engineers
??? - 31 March 1937 - 27 April 1942
(E) LCDR ABE Noritaka (??) - 27 April 1942 - ???
LT / LCDR* HANDA Masao (??) - ??? - 21 June 1943 (KIA)

(EO) LCDR IMAMURA Yasuoki: 3 July 1936 - 21 September 1936
LCDR / LCDR IMAMURA Yasuoki: 21 September 1936 - 1 December 1938
LCDR / LCDR KOHIGA Masayoshi: 1 December 1938 - 15 November 1939
LCDR / LCDR TANIGUCHI Teruo: 15 November 1939 - 15 October 1940
LCDR / LCDR SHIMA Tetsujiro: 15 October 1940 - 20 September 1941
LCDR / LCDR MASEDA Hidekiyo: 20 September 1941 - 25 April 1942
LCDR / LCDR ABE Noritaka: 25 April 1942 - 20 December 1942
LT / LT / LCDR* HANDA Masao: 20 December 1942 - 21 June 1943 (KIA)

I-7
Communications Officers
(EO) - LTJG ORITA Zenji (59) - ??? - 31 March 1937
LTJG ORITA Zenji (59) - 31 March 1937 - ???
??? - ??? - 1 November 1939
LT TATEGAMI Rikuta (60) - 1 November 1939 - 15 April 1941
VACANT - 15 April 1941 - 21 April 1941
LTJG / LT UENO Norihiro (66) - 21 April 1941 - 29 August 1942
LTJG HANABUSA Yoshio (67) - 29 August 1942 - 20 February 1943
LTJG NAKAYAMA Taiichi (69) - 20 February 1943 - 21 June 1943

VACANT: 21 September 1936 - 1 December 1936
LT / LT ISHIBASHI Masao: 1 December 1936 - 24 July 1937
VACANT: 24 July 1937 - 19 March 1938
LT / LT ISHIBASHI Masao: 19 March 1938 - 28 October 1938
LT / LT KOGA Shizuo: 28 October 1938 - 1 November 1939
LT / LT TACHIGAMI Rikuta: 1 November 1939 - 15 April 1941
VACANT: 15 April 1941 - 21 April 1941
LTJG / LT UENO Tadahiro: 21 April 1941 - 29 August 1942
LTJG / LTJG HANABUSA Yoshio: 29 August 1942 - 20 February 1943
LTJG / LTJG NAKAYAMA Taiichi 20 February 1943 - 5 July 1943

I-8
Commanding Officers
(CEO) - CDR GOTO Hiroshi (48) - 20 May 1938 - 15 December 1938
CDR GOTO Hiroshi (48) - 15 December 1938 - 15 November 1939
CDR SHIMIZU Taro (48) - 15 November 1939 - 31 October 1941
CDR EMI Tetsuhiro (50) - 31 October 1941 - 25 July 1942
CDR UCHINO Shinji (49) - 25 July 1942 - 15 January 1944
CDR / CAPT ARIIZUMI Tetsunosuke (51) - 15 January 1944 – 5 November 1944
VACANT – 5 November 1944 - 1 December 1944
LCDR / CAPT* SHINOHARA Shigeo (62) - 1 December 1944 - 31 March 1945 (KIA)

(CEO) CDR / CDR GOTO Hiroshi: 20 May 1938 - 5 December 1938
CDR / CDR GOTO Hiroshi: 5 December 1938 - 15 November 1939
CDR / CDR SHIMIZU Taro: 15 November 1939 - 31 October 1941
CDR / CDR EMI Tetsushiro: 31 October 1941 - 25 July 1942
CDR / CAPT UCHINO Shinji: 25 July 1942 - 15 January 1944
CDR / CAPT ARIIZUMI Ryunosuke: 15 January 1944 - 5 November 1944
VACANT: 5 November 1944 - 1 December 1944
LCDR / LCDR / CDR* SHINOHARA Shigeo: 1 December 1944 - 31 March 1945 (KIA)

I-8
Torpedo Officers
(EO) - LCDR ISOBE Akira (52) - ??? - 15 December 1938
LCDR ISOBE Akira (52) - 15 December 1938 - 15 October 1939
LT KITAMURA Soshichi (55) - ??? - ???
LT YONEHARA Minoru (59) - ??? - ???
LT SUZUKI Shokichi (62) - 11 May 1942 - ???
??? - ??? - 25 February 1943
LT KAMIHIROSHI Yasuo (66) - 25 February 1943 - ???
LT HONDA Yoshikuni (67) - 31 January 1944 - 14 October 1944
LT IMAI Umeichi (67) - 14 October 1944 - 10 January 1945
LT ONO Shimpei (68) - 10 January 1945 - 27 January 1945
LT / LCDR* TANAKA Kazue (69) - 27 January 1945 - 31 March 1945 (KIA)

(EO) LT / LT AKAHORI Jiro: 10 June 1938 - 1 December 1938
(EO) LCDR / LCDR ICHIKAWA Akira: 1 December 1938 - 5 December 1938
LCDR / LCDR ICHIKAWA Akira: 5 December 1938 - 15 October 1939
VACANT: 15 October 1939 - 1 November 1939
LT / LCDR KITAMURA Soshichi: 1 November 1939 - 30 October 1940
LCDR / LCDR KUROKAWA Hideyuki: 30 October 1940 - 20 December 1940
LT / LCDR TORISU Kennosuke: 20 December 1940 - 15 October 1941
LT / LT YONAHARA Minoru: 15 October 1941 - 10 May 1942
LT / LT SUZUKI Shokichi: 10 May 1942 - 25 February 1943
LT / LT KAMISHAKOKU Yasuo: 25 February 1943 - 31 January 1944
LT / LT HONDA Yoshikuni: 31 January 1944 - 14 October 1944
LT / LT IMAI Umeichi: 14 October 1944 - 10 January 1945
LT / LT ONO Shimpei: 10 January 1945 - 27 January 1945
LT / LT / LCDR* TANAKA Kazushige: 27 January 1945 - 31 March 1945 (KIA)

I-8
Navigators
??? - 15 December 1938 - 1 November 1940
LT HATTORI Shogo (61) - 1 November 1940 - ???
??? - ??? - 1 September 1942
LTJG YOSHIDA Taro (??) - 1 September 1942 - 5 December 1942
LTJG FUSE Sadatake (??) - 5 December 1942 - ???
??? - ??? - 10 January 1944
LT KIRIHARA Yoshisuke (68) - 10 January 1944 - 20 April 1944
LTJG / LT KATAYAMA Goichi (70) - 20 April 1944 - 10 December 1944
LT / LCDR* WARASHINA Takashi (70) - 10 December 1944 - 31 March 1945 (KIA)

(EO) LT / LT NAGAI Katsuhiko: 30 July 1938 - 5 December 1938
LT / LT NAGAI Katsuhiko: 5 December 1938 - 1 May 1940
LT / LT SATO Sakuma: 1 May 1940 - 20 September 1940
VACANT: 20 September 1940 - 15 November 1940
LT / LT HATTORI Shogo: 15 November 1940 - 15 April 1941
LT / LT SUZUKI Shokichi: 15 April 1941 - 10 May 1942
LT / LT MIYAJIMA Shigeyuki: 10 May 1942 - 1 September 1942
LTJG / LT YOSHIDA Taro: 1 September 1942 - 10 January 1944
LT / LT KIRIHARA Yoshinori: 10 January 1944 - 20 April 1944
LTJG / LT KATAYAMA Goichi: 20 April 1944 - 10 December 1944
LT / LT / LCDR* WARASHINA Takashi: 10 December 1944 - 31 March 1945 (KIA)

I-8
Chief Engineers
??? - 15 December 1938 - 21 December 1942
LT HANDA Masao (??) - 21 December 1942 - ???
LT / LCDR YAMADA Kumeo (??) - ??? - 20 April 1943
LCDR TABUCHI Satoru (??) - 20 April 1943 - ???
??? - ??? - 25 October 1944
LT / LCDR* KANO Kazunori (??) - 25 October 1944 - 31 March 1945 (KIA)

(EO) LCDR / LCDR MITO Fumiaki: 20 May 1938 - 5 December 1938
LCDR / LCDR MITO Fumiaki: 5 December 1938 - 23 May 1939
LT / LCDR HIKICHI Noboru: 23 May 1939 - 15 October 1940
LCDR / LCDR KORIYAMA Yoshihiro: 15 October 1940 - 1 April 1941
LT / LT MIURA Mitsuo: 1 April 1941 - 10 September 1941
LT / LCDR YAMADA Kumeo: 10 September 1941 - 20 April 1943
LCDR / LCDR TABUCHI Satoru: 20 April 1943 - 27 December 1943
LT / LT OSAWA Shigenori: 27 December 1943 - 25 October 1944
LT / LT / LCDR* KANO Kazunari: 25 October 1944 - 31 March 1945 (KIA)

I-8
Communications Officers
??? - 15 December 1938 - June 1939
LT TANABE Yahachi (56) - June 1939 - 15 November 1940
LTJG / LT AZUMA Yoshitaka (??) - 15 November 1940 - 6 April 1942
LTJG MATSUURA Masaharu (??) - 6 April 1942 - 15 April 1943
LTJG KUWASHIMA Seizo (69) - 15 April 1943 - 5 January 1944
LTJG NAWA Tomoyoshi (70) - 5 January 1944 - 14 October 1944
LTJG / LT KURODA Masaru (71) - 14 October 1944 - 3 February 1945
LTJG / LT* MASUDA Sasuke (72) - 3 February 1945 - 31 March 1945 (KIA)

(EO) (ADD) LT / LT KAMEDA Tadashi: 1 October 1938 - 28 October 1938
His regular post was EO of MIZUHO.
(EO) LT / LT ISHIBASHI Masao: 28 October 1938 - 5 December 1938
LT / LT ISHIBASHI Masao: 5 December 1938 - 1 June 1939
LT / LT TANABE Yahachi: 1 June 1939 - 1 November 1939
VACANT: 1 November 1939 - 15 November 1939
LT / LT ISHIGE Chifuyu: 15 November 1939 - 15 November 1940
LTJG / LT AZUMA Yoshitaka: 15 November 1940 - 6 April 1942
LTJG / LTJG MATSUURA Masaharu: 6 April 1942 - 15 April 1943
LTJG / LTJG KUWASHIMA Saizo: 15 April 1943 - 5 January 1944
LTJG / LT NAWA Tomoya: 5 January 1944 - 14 October 1944
LTJG / LT KURODA Masaru: 14 October 1944 - 3 February 1945
LTJG / LT MASUDA Sasuke: 3 February 1945 - 31 March 1945 (KIA)

fontessa

[ijnfleetadmiral]

AWESOME!!! Questions / comments:

1) Could you post the kanji for:
KAWASAKI Rikuro (I-1 Torpedo Officer)
ICHIKAWA Susumu (I-1 Torpedo Officer / I-5 Navigator)
SAKURAI Takezo (I-1 Navigator)
YOSHIMURA Karoku (I-2 Torpedo Officer)
OKUMURA Arata (I-3 Torpedo Officer)
IKI Hisoka (I-3 Navigator)
NAGAI Chodayu (I-4 Torpedo Officer)
FUMOTO Tatei (I-5 Navigator)
SHINNYO Yoshio (I-6 Torpedo Officer)
OMAE Saichi (I-7 Navigator)
KOGA Shizuo (I-7 Communications Officer)
MITO Fumiaki (I-8 Chief Engineer)
AZUMA Yoshitaka (I-8 Communications Officer)

2) For I-1, Navigator LT SAKAI Toshimi was not KIA when I-1 was sunk. What I have for him:
I-1 Navigator - 05/23/42 - 01/29/43
I-10 Navigator - 03/01/43 - 02/02/44
RO-114 Torpedo Officer - ??? - 06/17/44 (KIA)
LT - 07/12/44 (posthumous promotion)

3) For I-1, I'm guessing there was no info on Chief Engineers for 1 December 1927 - 10 December 1928 and 1 April 1930 - 15 November 1935?

4) For I-3, I'm guessing there was no info on Chief Engineers from 15 November 1939 - 10 September 1942?

5) For I-5, I'm guessing there was no info on Chief Engineers from 15 November 1939 - 10 September 1942?

6) For I-6, is this correct for Torpedo Officers?
LT ICHIMURA Rikinosuke (64) - 15 May 1942 - 10 September 1942
VACANT – 10 September 1942 – 5 December 1942
LT SUGAMASA Tetsuaki (65) - 5 December 1942 – 15 August 1943
VACANT – 15 August 1943 – 7 May 1944
LTJG SATO Kichitaro (Spec. Duty) – 7 May 1944 – 5 June 1944
LTJG / LT* WATANABE Shiro (Spec. Duty) – 5 June 1944 - 16 June 1944 (KIA)

7) For I-7, is this correct for Torpedo Officers?
LT INOUE Takadane (51) - 31 March 1937 – 3 June 1937
VACANT – 3 June 1937 – 1 December 1937
LT / LCDR HARADA Hakue (52) – 1 December 1937 – 15 December 1938

[fontessa]

Hello ijnfleetadmiral,

1) Could you post the kanji for:
KAWASAKI Rikuro (I-1 Torpedo Officer)
ICHIKAWA Susumu (I-1 Torpedo Officer / I-5 Navigator)
SAKURAI Takezo (I-1 Navigator)
YOSHIMURA Karoku (I-2 Torpedo Officer)
OKUMURA Arata (I-3 Torpedo Officer)
IKI Hisoka (I-3 Navigator)
NAGAI Chodayu (I-4 Torpedo Officer)
FUMOTO Tatei (I-5 Navigator)
SHINNYO Yoshio (I-6 Torpedo Officer)
OMAE Saichi (I-7 Navigator)
KOGA Shizuo (I-7 Communications Officer)
MITO Fumiaki (I-8 Chief Engineer)
AZUMA Yoshitaka (I-8 Communications Officer)

KAWASAKI Rikuro: 川崎陸郎
ICHIKAWA Susumu: 市川旦
SAKURAI Takezo: 櫻井斌左右
YOSHIMURA Karoku: 嘉村嘉六
OKUMURA Arata: 奥村新
IKI Hisoka: 壱岐密
NAGAI Chodayu: 永井長太夫
FUMOTO Tatei: 麓多禎
SHINNYO Yoshio: 新名嘉雄
OMAE Saichi: 大前左一
KOGA Shizuo: 古閑静夫
MITO Fumiaki: 三戸文章
AZUMA Yoshitaka: 吾妻義孝

2) For I-1, Navigator LT SAKAI Toshimi was not KIA when I-1 was sunk. What I have for him:
I-1 Navigator - 05/23/42 - 01/29/43
I-10 Navigator - 03/01/43 - 02/02/44
RO-114 Torpedo Officer - ??? - 06/17/44 (KIA)
LT - 07/12/44 (posthumous promotion)

Thanks.

3) For I-1, I'm guessing there was no info on Chief Engineers for 1 December 1927 - 10 December 1928 and 1 April 1930 - 15 November 1935?

The following lacked.
(EO) LCDR HIO Kiyoshi: 15 April 1925 - 10 March 1926
LCDR / LCDR HIO Kiyoshi: 10 March 1926 - 1 November 1926
LCDR / LCDR TOYAMA Kiyoharu: 1 November 1926 - 1 December 1927
LT / LT YAMADA Kotaro: 1 December 1927 - 10 December 1928
LT / LT HAMANO Gun’ichi: 10 December 1928 - 1 April 1930
LT / LCDR FUKUSHIMA Terukuma: 1 April 1930 - 1 September 1933
LT / LCDR KOMO’OKA Toyo’o: 1 September 1933 - 15 November 1934
LCDR / ??? MURAKADO Yasuzo: 15 November 1934 - ???

4) For I-3, I'm guessing there was no info on Chief Engineers from 15 November 1939 - 10 September 1942?

There is no data. Probably special duty officers were appointed / relieved.

5) For I-5, I'm guessing there was no info on Chief Engineers from 15 November 1939 - 10 September 1942?

There is no data. Probably special duty officers were appointed / relieved.

6) For I-6, is this correct for Torpedo Officers?
LT ICHIMURA Rikinosuke (64) - 15 May 1942 - 10 September 1942
VACANT - 10 September 1942 - 5 December 1942
LT SUGAMASA Tetsuaki (65) - 5 December 1942 - 15 August 1943
VACANT - 15 August 1943 - 7 May 1944
LTJG SATO Kichitaro (Spec. Duty) - 7 May 1944 - 5 June 1944
LTJG / LT* WATANABE Shiro (Spec. Duty) - 5 June 1944 - 16 June 1944 (KIA)

There is no data.
I don't know whether vacant seat or unknown special duty officer was appointed.

7) For I-7, is this correct for Torpedo Officers?
LT INOUE Takadane (51) - 31 March 1937 - 3 June 1937
VACANT - 3 June 1937 - 1 December 1937
LT / LCDR HARADA Hakue (52) - 1 December 1937 - 15 December 1938

There is no data.
I don't know whether vacant or unknown special duty officer was appointed.

fontessa

[ijnfleetadmiral]

Thanks for clarifying! Translations:

KAWASAKI Rikuro: 川崎陸郎 - I had him as KAWASAKI Mutsuro (51).
ICHIKAWA Susumu: 市川旦 - No idea on this one...any ideas on his Eta Jima Class?
SAKURAI Takezo: 櫻井斌左右 - I had him as SAKURAI Toshizo (53).
YOSHIMURA Karoku: 嘉村嘉六 - I had him as KIMURA Karoku (44).
OKUMURA Arata: 奥村新 - I had him as OKAMURA Shin (48).
IKI Hisoka: 壱岐密 - I had him as IKI Mitsu (55).
NAGAI Chodayu: 永井長太夫 - No idea on this one...any ideas on his Eta Jima Class?
FUMOTO Tatei: 麓多禎 - I had him as FUMOTO Masayoshi (60).
SHINNYO Yoshio: 新名嘉雄 - I had him as NINA Yoshio (56).
OMAE Saichi: 大前左一 - The closest I came was OHMAE Toshikazu (50)...thoughts?
KOGA Shizuo: 古閑静夫 - No idea on this one...any ideas on his Eta Jima Class?
MITO Fumiaki: 三戸文章 - No idea on this one...any ideas on his Eta Jima Class?
AZUMA Yoshitaka: 吾妻義孝 - I had him as AGATSUMA Yoshitaka (65).

Looking forward to the Mine / Torpedo Officers!

[Steve E]

Hi fontessa,
In your commanders list for I-1 you have CDR / CDR YASUHISA Eitaro: 25 August 1941 - 31 October 1942. Should it not be Ankyu Eitaro 安久 栄太郎 ?
Regards
Steve.

[fontessa]

Hello ijnfleetadmiral,

ICHIKAWA Susumu: 市川旦 - No idea on this one...any ideas on his Eta Jima Class?
NAGAI Chodayu: 永井長太夫 - No idea on this one...any ideas on his Eta Jima Class?
KOGA Shizuo: 古閑静夫 - No idea on this one...any ideas on his Eta Jima Class?
MITO Fumiaki: 三戸文章 - No idea on this one...any ideas on his Eta Jima Class?

I couldn't find their Classes.

OMAE Saichi: 大前左一 - The closest I came was OHMAE Toshikazu (50)...thoughts?

"左" usually does not read as "Toshi". Don't you read 大場佐一 (62) as OBA Saichi?

*****************

Hello Steve E,

Should it not be Ankyu Eitaro 安久 栄太郎 ?

The Kanji for him is correct. So the reading of it might be "Ankyu Eitaro". (I don't know his correct reading.)

fontessa

[Steve E]

Hi Matt,
Re ICHIKAWA Susumu : He changed his name to Isobe about1940. I think his christian name is Akira.
Class 52, 105 out of 236. Kanji for Ichikawa Akira =市川旦; Kanji for Isobe Akira = 磯部旦
Check out my website http://www.ijnsubsite.info/
Cheers Steve.

[ijnfleetadmiral]

Thanks, Steve! I'll have to send you some more info for your website.

[Steve E]

You are welcome Matt, new info is always appreciated.
TIA Steve.

[fontessa]

Hello ijnfleetadmiral,

I would like to correct the mistake.

I-3
Commanding Officers
(CEO) - LCDR OGINO Nakaichiro (37) - 1 May 1926 - 30 November 1926
LCDR OGINO Nakaichiro (37) - 30 November 1926 - 15 January 1928
LCDR SEKINO Akira (38) - 15 January 1928 - 15 December 1928
LCDR MICHINO Kiyoshi (41) - 15 December 1928 - 1 June 1929
LCDR HARADA Kaku (41) - 1 June 1929 - 1 December 1932
CDR ISHIZAKI Noboru (42) - 1 December 1932 - 15 November 1933
CDR UOZUMI Jisaku (42) - 15 November 1933 - 1 November 1934
LCDR MATSUMURA Midori (48) - 1 November 1934 - 20 October 1935
LCDR KUME Ikuji (46) - 20 October 1935 - 15 November 1935
LCDR NAGAI Hiroaki (48) - 15 November 1935 - 6 January 1936
LCDR KOBAYASHI Hajime (48) - 6 January 1936 - 1 December 1936
CDR MATSUO Yoshiyasu (47) - 1 December 1936 - 1 December 1937
LCDR ISHIKAWA Nobuo (49) - 1 December 1937 - 15 November 1938
CDR KOBAYASHI Hajime (48) - 15 November 1938 - 24 April 1939
LCDR IURA Shojiro (51) - 24 April 1939 - 20 October 1939
CDR FUJII Akiyoshi (49) - 20 October 1939 - 25 July 1940
LCDR KINASHI Takakazu (51) - 25 July 1940 - 4 November 1940
LCDR / CDR TONOZUKA Kinzo (50) - 4 November 1940 - 20 May 1942
LCDR / CDR / RADM* TOGAMI Ichiro (51) - 20 May 1942 - 9 December 1942 (KIA)

(CEO) LCDR / LCDR OGINO Nakaichiro: 1 May 1926 - 30 November 1926
LCDR / LCDR OGINO Nakaichiro: 30 November 1926 - 15 January 1928
LCDR / LCDR SEKINO Akira: 15 January 1928 - 15 December 1928
LCDR / LCDR MICHINO Kiyoshi: 15 December 1928 - 1 June 1929
LCDR / CDR HARADA Satoru: 1 June 1929 - 1 December 1932
CDR / CDR ISHIZAKI Noboru: 1 December 1932 - 15 November 1933
CDR / CDR UOZUMI Jisaku: 15 November 1933 - 1 November 1934
LCDR / LCDR MATSUMURA Midori: 1 November 1934 - 21 October 1935
(ADD) LCDR / CDR KUME Ikuji: 21 October 1935 - 15 November 1935
His regular post was CO of I-2.
(ADD) LCDR / LCDR NAGAI Hiroaki: 15 November 1935 - 6 January 1936
His regular post was CO of I-1.
(ADD) LCDR / LCDR KOBAYASHI Hajime: 6 January 1936 - 26 March 1936
His regular post was CO of I-2.
LCDR / LCDR ENDO Keiyu: 26 March 1936 - 2 November 1936
(ADD) LCDR / LCDR KOBAYASHI Hajime: 2 November 1936 - 1 December 1936
His regular post was CO of I-2.
LCDR / CDR MATSUO Yoshiyasu: 1 December 1936 - 1 December 1937
LCDR / CDR ISHIKAWA Nobuo: 1 December 1937 - 15 November 1938
CDR / CDR KOBAYASHI Hajime: 15 November 1938 - 24 April 1939
LCDR / LCDR IURA Shojiro: 24 April 1939 - 20 November 1939
(ADD) CDR / CDR FUJII Akiyoshi: 20 November 1939 - 26 July 1940
His regular post was CO of I-2.
LCDR / LCDR KINASHI Yoichi: 26 July 1940 - 5 November 1940
LCDR / CDR TONOZUKA Kinzo: 5 November 1940 - 20 November 1942
CDR / CDR / CAPT* TOGAMI Ichiro: 20 November 1942 - 9 December 1942 (KIA)

LCDR / CDR TONOZUKA Kinzo: 5 November 1940 - 20 May 1942
CDR / CDR / CAPT* TOGAMI Ichiro: 20 May 1942 - 9 December 1942 (KIA)

fontessa

[ijnfleetadmiral]

Awesome...thanks!

[fontessa]

Hello ijnfleetadmiral,

I would like to correct the mistake.

I-4
Commanding Officers
(CEO) - CDR TAKATSUKA Seigo (38) - 15 May 1929 - 24 December 1929
CDR TAKATSUKA Seigo (38) - 24 December 1929 - 1 April 1930
LCDR KODA Takero (41) - 1 April 1930 - 1 December 1931
LCDR NAKAOKA Nobuki (45) - 1 December 1931 - 4 October 1932
LCDR NAKAOKA Masao (46) - 4 October 1932 - 15 November 1935
LCDR MIZOHATA Sadakazu (46) - 15 November 1935 - 30 June 1936
CDR MIZUGUCHI Hyoe (46) - 30 June 1936 - 1 December 1937
LCDR KOBAYASHI Hajime (48) - 1 December 1937 - 15 November 1938
LCDR / CDR EMI Tetsuhiro (50) - 15 November 1938 - 1 November 1941
CDR NAKAGAWA Hajime (50) - 1 November 1941 - 15 August 1942
CDR KAWASAKI Mutsuro (51) - 15 August 1942 - 6 November 1942
LCDR / CDR* UENO Toshitake (56) - 6 November 1942 - 20 December 1942 (KIA)

(CEO) LCDR / CDR TAKATSUKA Shogo: 15 May 1929 - 24 December 1929
CDR / CDR TAKATSUKA Seigo: 24 December 1929 - 1 April 1930
CDR / CDR KOUDA Takeo: 1 April 1930 - 1 December 1931
LCDR / LCDR NAKAOKA Nobuki: 1 December 1931 - 5 October 1932
LCDR / LCDR TERAOKA Masao: 5 October 1932 - 21 October 1935
(ADD) LCDR TAKEZAKI Kaoru: 21 October 1935 - 15 November 1935
His regular post was CO of I-5.
LCDR / LCDR MIZOHATA Sadaichi: 15 November 1935 - 26 December 1935
(ADD) CDR / CDR TAKEZAKI Kaoru: 26 December 1935 - 30 June 1936
His regular post was CO of I-5.
CDR / CDR MINAGUCHI Hyoe: 30 June 1936 - 1 December 1937
LCDR / CDR KOBAYASHI Hajime: 1 December 1937 - 15 November 1938
LCDR / CDR EMI Tetsushiro: 15 November 1938 - 31 November 1941
CDR / CDR NAKAGAWA Hajime: 31 November 1941 - 15 August 1942
LCDR / LCDR KAWASAKI Rikuro: 31 November 1941 - 6 November 1942
LCDR / LCDR / CDR* UENO Toshitake: 6 November 1942 - 20 December 1942 (KIA)

LCDR / LCDR KAWASAKI Rikuro: 15 August 1942 - 6 November 1942

fontessa

[ijnfleetadmiral]

Awesome...thanks!

[fontessa]

Hello ijnfleetadmiral,

I would like to correct my posting.

I listed a date of the next appointment for the survivor of the ship’s sinking.

I-7
Communications Officers
LTJG NAKAYAMA Taiichi (69) - 20 February 1943 - 21 June 1943

LTJG / LTJG NAKAYAMA Taiichi 20 February 1943 - 5 July 1943

LTJG / LTJG NAKAYAMA Taiichi 20 February 1943 - 1 August 1943
He survived the sinking.

fontessa