1st Japanese Submarine commissioned;

01/08/1905-16/10/1908=Sub.Div.1; Yokosuka ND;
16/10/1908-17/04/1911=Sub.Div.1; Kure ND;
17/04/1911-01/04/1913=Sub.Div.1; Kure Torpedo Group; Kure ND;
01/04/1913-01/12/1916=Sub.Div.1; Kure Defence Div.; Kure ND;
01/12/1916-01/04/1917=Sub.Div.2; Kure Defence Div.; Kure ND;
01/04/1917-02/11/1918=Sub.Div.2; Yokosuka DefenceDiv; Yokosuka ND;
02/11/1918-30/04/1921=Sub.Div.1; Yokosuka DefenceDiv.; Yokosuka ND;

CEO:Cdr.Oguri Kozaburo [15]=08/12/1904-01/08/1905;
CO:Cdr.Oguri Kozaburo [15]=01/08/1905-24/02/1906;
CO:
CO:Lt.Nakahara Yoshimasa [41]=01/12/1920-30/04/1921;

30/04/1921Removed from Navy List;
Broken Up;

[Cdr.Oguri Kozaburo] [15]
23/10/1905=Yokohama Naval Review;
[]
11/04/1910 Kure-16/04/1910 Kure=w.Seto Inland Sea;(Training);

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