Home Base:Yokosuka ND;
28/04/1928-11/12/1933=Sub.Div.9; Yokosuka Defence Div; Yokosuka ND;
11/12/1933-15/11/1935=Sub.Div.9; Yokosuka Guard Ron: Yokosuka ND;
15/11/1935-01/12/1937=Sub.Div.9; Yokosuka Defence Ron; Yokosuka ND;
01/12/1937-20/06/1938=Sub.Div.9; Sub.Ron.3; 4th Fleet; Combined Fleet;
20/06/1938-01/04/1939=Sub.Div.9; Gunnery School; Yokosuka ND;
01/04/1939-15/11/1939=Sub.Div.9; Yokosuka ND; 3rd Reserve;
15/11//1939-01/05/1940=Sub.Div.9; Yokosuka ND; 2nd Reserve;
01/05/1940-15/11/1940=Sub.Div.9; Sub.Ron.5; 4th Fleet; Combined Fleet;
15/11/1940-01/05/1941=Sub.Div.9; Yokosuka ND;
01/05/1941-25/02/1942=Sub.Div.9; Sub.Ron.6; 3rd Fleet; Combined Fleet;
25/02/1942-10/03/1942=Sub.Div.13; Sub.Ron.6; 3rd Fleet; Combined Fleet;
10/03/1942-10/04/1942=Sub.Div.13; Sub.Ron.6; Combined Fleet;
10/04/1942-14/07/1942=Sub.Div.13; 6th Fleet; Combined Fleet;
14/07/1942-05/10/1942=Sub.Div.13; Sub.Ron.7; 8th Fleet; Combined Fleet;

25/05/1935-26/12/1935 ?=Reserve;

CEO:Lt.Cdr.Tsujimura Takehisa [42]=01/12/1927-28/04/1928;
CO:Lt.Cdr.Tsujimura Takehisa [42]=28/04/1928-10/03/1929;
CO:Lt.Cdr.Ito Jotaro [42]=10/03/1929-10/06/1930;
CO:Lt.Cdr.Oda Tamekiyo [43]=10/06/1930-01/12/1931;
CO:Lt.Cdr.Otake Toshio [45]=01/12/1931-15/11/1933;
CO:Lt.Cdr.Oyama Toyojiro [47]=15/11/1933-15/11/1934;
CO:Lt.Cdr.Katsumi Motoi [49]=15/11/1934-25/05/1935;
(+)CO:Lt.Cdr.Hattori Kunio [47]=25/05/1935-03/07/1935;
CO:Lt.Cdr.Nishino Kozo [48]=03/07/1935-26/12/1935;
CO:Lt.Cdr.Mizohata Sadaichi [46]=26/12/1935-01/12/1936;
CO:Lt.Cdr.Ankyo Eitaro [50]=01/12/1936-19/03/1938;
CO:Lt.Cdr.Izu Hisaichi [51]=19/03/1938-15/11/1938;
CO:Lt.Cdr.Yamada Kaoru [50]=15/11/1938-20/11/1939;
CO:Lt.Cdr.Tonozuka Kinzo [50]=20/11/1939-05/11/1940;
CO:Lt.Cdr.Maruyama Hanzo [52]=05/11/1940-05/09/1941;
CO:Lt.Cdr.Ueno Toshitake [56]=05/09/1941-/30/06/1942;
CO:Lt.Cdr.Nakai Makoto [58]=30/06/1942-29/08/1942+KIA;

12/08/1942 Shelled Guadalcanal; [14Shells]
07/12/1941 Laid 40 Mines=Balabac Strait, Manila Bay;
23/12/1941 Laid Mines=Surabaya Harbor;
27/01/1942 Laid 30 Mines=Dundas Strait;
25/02/1942 Laid 40 Mines Torres Strait;

19/03/1927 Renumbered I-23;
01/06/1938 Renumbered I-123;
29/08/1942 Sunk=60m.ese.Savo Is.Solomons;09*21'S;160*43'E;
Depth Charges;US.DM.Gamble;
No Survivors; 81 KIA;
05/10/1942 Removed from Navy List;

[Lt.Cdr.Tonozuka Kinzo] [50]
16/05/1940Sasebo-22/09/1940Yokosuka=Caroline Is.;Marshall Is.;Mariana Is.;Training;
11/10/1940=Yokohama Naval Review;
[Lt.Cdr.Ueno Toshitake] [56]
m/11/1941Yokosuka-27/11/1941Samah,Hainan Is.=Transit;
01/12/1941Samah-09/12/1941CamranhBay(French.I.CH)=ManilaBay,Philippines;(Repairs);
15/12/1941CamranhBay-31/12/1941Davao=SouthChinaSea-JavaSea;
10/01/1942Davao-03/02/1942Davao=Darwin;
19/02/1942Davao-09/03/1942StaringBay=TorresStrait;
14/03/1942StaringBay-25/03/1942Yokosuka=Transit(Repairs)
07/05/1942Yokosuka-17/05/1942Kwajalein=Transit;
19/05/1942Kwajalein-25/06/1942Kwajalein=-FrenchFrigateShoal-Hawaii;
25/l/06/1942Kwajalein-05/06/1942Yokosuka=Transit;
[Lt.Cdr.Nakai Makoto] [58]
26/07/1942Yokosuka-01/08/1942Truk=Transit;
01/08/1942Truk-05/08/1942Rabaul=Transit;
07/08/1942Rabaul-29/08/1942Sunk=Solomons-Tulagi-se.SanCristobal-Guadalcanal-e.Savo Is.+;

Sorties=6