Home Base:Maizuru ND;
20/12/1924-01/06/1925=Sub.Div.33; Maizuru ND;
01/06/1925-01/12/1925=Sub.Div.24; Sasebo ND;
01/12/1925-10/12/1928=Sub.Div.24;Sub.Ron.1;1stFleet;Combined Fleet;
10/12/1928-30/11/1929=Sub.Div.24; Sasebo Defence Div.; Sasebo ND;
30/11/1929-01/12/1930=Sub.Div.24;Sub.Ron.1;1stFleet;Combined Fleet;
01/12/1930-01/12/1931=Sub.Div.24; Sasebo ND;
01/12/1931-11/12/1933=Sub.Div.24; Sasebo Defence Div.; Sasebo ND;
11/12/1933-15/11/1934=Sub.Div.24; Sasebo Guard Ron.; Sasebo ND;
15/11/1934-01/12/1936=Sub.Div.24; Sasebo ND;
01/12/1936-01/01/1938=Sub.Div.24; Sasebo Defence Ron.; Sasebo ND;
01/01/1938-15/11/1939=Sub.Div.24; Sasebo ND;
15/11/1939-15/11/1940=Sub.Div.33; Kure Submarine School; Kure ND;
15/11/1940-14/07/1942=Sub.Div.33;Sub.Ron.7;4th Fleet;Combined Fleet;
14/07/1942-25/09/1942=Sub.Div.33;5th Fleet;Combined Fleet;
25/09/1942-01/12/1943= Sub.Div.33; Kure ND;
01/12/1943-15/09/1945=Sub.Div.33; Kure Sub.Ron; Kure ND;

10/03/1929-29/06/1929 ?=Reserve;
01/12/1932-20/03/1934 ?=Reserve;

CEO:Lt.Cdr.Hiraoka Kumeichi [39]=20/10/1924-20/12/1924;
CO:Lt.Cdr.Hiraoka Kumeichi [39]=20/12/1924-01/12/1925;
CO:Lt.Cdr.Kosokabe Yuzuru [38]=01/12/1925-15/01/1928;
CO:Lt.Cdr.Ito Jotaro [42]=15/01/1928-10/03/1929;
CO:Lt.Mizohata Sadaichi [46]=10/033/1929-29/06/1929;
CO:Lt.Nakaoka Nobuki [45]=29/06/1929-30/11/1929;
CO:Lt.Cdr.Otake Toshio [45]=30/11/1929-01/12/1931;
CO:Lt./Lt.Cdr.Shimizu Taro [48]=01/12/1931-20/03/1934;
CO:Lt.Cdr.Yamada Takashi [49]=20/03/1934-28/02/1935;
CO:Lt.Cdr.Otani Kiyonori [49]= ?? -15/02/1936;
CO:Lt.Yamada Kaoru [50]=15/02/1936-20/03/1937;
CO:Lt.Cdr.Inaba Michimune [51]=20/03/1937-31/07/1937;
CO:Lt.Cdr.Yokota Minoru [51]=31/07/1937-15/11/1937;
CO:Lt.Cdr.Hanabusa Hiroshi [51]=15/11/1937-19/03/1938;
CO:Lt.Cdr.Inaba Michimune [51]=19/03/1938-15/12/1938;
CO:Lt.Cdr.Yajima Yasuo [51]=15/12/1938-01/09/1939;
CO:Lt.Cdr.Tagami Meiji [51]=01/09/1939-20/11/1939;
CO:Lt.Cdr.Ohira Masajiro [52]=20/11/1939-20/03/1940;
CO:Lt.Izutsu Monshiro [57]=20/03/1940-15/10/1940;
CO:Lt.Cdr.Kusaka Toshio [53]=15/10/1940-10/02/1942;
CO:Lt.Cdr.Nagai Katsuhiko [57]=10/02/1942-15/10/1942;
CO:Lt.Cdr.Nanbu Nobukiyo [61]=15/10/1942-16/03/1943;
CO:Lt.Kondo Fumitake [62]=16/03/1943-25/07/1943;
CO:Lt./Lt.Cdr.Nishiuchi Shoichi [60]=25/07/1943-20/12/1943;
CO:Lt.Suzuki Katsuhito [63]=20/12/1943-23/02/1944;
CO:Cdr.Otani Kiyonori [49]=23/02/1944-30/04/1944;
CO:Lt(jg)./Lt..Takema Chuzo [65]=30/04/1944-05/08/1944;
CO:Lt.Koreeda Sadayoshi [64]=05/08/1944-20/08/1944;
CO:Lt(jg)./Lt..Arai Kanichi [69]=20/08/1944-06/11/1944;
CO:Lt.Imanishi Saburo [67]=06/11/1944-20/07/1945;
CO:Lt.Morita Ryoji [64]=20/07/1945-30/07/1945;
CO:Lt.Taketomi Kunio [65]=30/07/1945-20/11/1945;

01/11/1924 Renumbered RO-63;
14/09/1942 Damaged=US.A/C; Kiska;
25/09/1942-15/08/1945 Training Boat;
15/08/1945 Surrendered=Maizuru;
20/11/1945 Removed from Navy List;
/ 5/1946scuttled; Inland Sea;

[Lt.Cdr.Kosokabe Yuzuru] [38]
l/03/1926Sasebo-l/03/1926Okinawa=Transit;
30/03/1926Okinawa-05/04/1926Mako,Taiwan=Shanghai-Amoi=Training;
20/04/1926Mako-26/04/1926Sasebo=Chushan Is.=Training;
27/03/1927Saeki Bay-16/05/1927Sasebo=Tsingtao=Training;
[Lt.Cdr.Kusaka Toshio] [53]
08/12/1941Kwajalein-19/12/1941Kwajalein=Howland Is-Baker Is.; 07/01/1942Kwajalein-11/01/1942Truk=Wake Is;
15/01/1942Truk-29/01/1942Truk=Rabaul-St.GeogeChannel;
[Lt.Cdr.Nagai Katsuhiko] [57]
18/02/1942Truk-23/02/1942Ponape=Transit;
24/02/1942Ponape-01/03/1942Bikini=Transit;(Repairs);
02/03/1942Bikini-05/03/1942Ponape=Transit;(Repairs);
07/03/1942Ponape-09/03/1942Truk=Transit;(Repairs);
19/03/1942Truk-22/03/1942Saipan=Transit;
26/03/1942Saipan-03/04/1942Maizuru=Transit;(Repairs):
05/06/1942Maizuru-13/06/1942Saipan=Transit;
m/06/1942Saipan- m/06/1942Truk=Transit;
27/06/1942Truk-04/07/1942=Yokosuka=Transit;
24/07/1942Yokosuka-29/07/1942Paramushiro=Transit;
31/07/1942Paramushiro-04/08/1942Kiska=Transit;
08/08/1942Kiska-10/08/1942Kiska=e.Kiska;
11/08/1942Kiska-13/08/1942Kiska=e.Kiska;
17/08/1942Kiska-20/08/1942Kiska=e.Kiska;
28/08/1942Kiska-30/08/1942Kiska=e.Kiska;
03/09/1942Kiska-05/09/1942Kiska=e.Kiska;
06/09/1942Kiska-11/09/1942Kiska=e.Kiska;
22/09/1942Kiska-24/09/1942Kiska=e.Kiska;
26/09/1942Kiska-05/10/1942Maizuru=Transit;(Repairs);
[Lt.Cdr.Nanbu Nobukiyo] [61]
06/11/1942Maizuru-08/11/1942Kure=Transit;

Sorties=10