Ha-101 class original design

[World B4]

The Ha-101 class submarines were laid down as transport submarines, but during construction were converted into tanker submarines, small submarine motherships/tenders, and radar picket subs. Any specifications or illustrations of the intended original design would be bussin

Ha-101-class submarine - Wikipedia

en.wikipedia.org

 

[World B4]

My apologies, I was unaware that the first few were completed as transports before being converted. Perhaps the thread could be moved, and become a thread about the service lives of the submarines in this class?