Directly attached to Sub.Ron.8:

I-10=10/03/1942-01/01/1944+
=Flagship
I-8=25/05/1943-05/11/1944
I-26=25/11/1943-20/06/1944
I-27=15/12/1943-10/07/1944+
I-29=15/09/1943-05/08/1944
I-34=15/09/1943-01/01/1944+
I-37=15/12/1943-12/09/1944
I-52=10/03/1944-10/12/1944+
I-165=25/03/1944-15/12/1944
I-166=25/03/1944-10/09/1944+
RO-113=15/08/1944-20/02/1945
RO-115=15/08/1944-20/02/1945
RO-501=15/02/1944-10/10/1944+

Sub.Tenders:
HieMaru=
10/03/1942-01/10/1943;

Sub.Div.3=
10/03/1942-15/12/1942
Sub.Div.1=
10/03/1942-10/08/1943
Sub.Div.14=
10/03/1942-15/12/1943
Sub.Div.30=
01/01/1944-25/03/1944

6thFleet=
10/03/1942-20/02/1945;