SENSUIKAN!

IJN Submarine HA-204:
Tabular Record of Movement

2006-2015 Bob Hackett & Sander Kingsepp
Revision 1


5 April 1945:
Sasebo Navy Yard. Laid down as a Sensuikan Taka Sho (Fast Small Submarine), (STS) Type.

15 May 1945:
Lt Shigemoto Shunichi (70)(former navigating officer of I-47) is appointed the Chief Equipping Officer.

1 June 1945:
Launched.

25 June 1945:
Completed and commissioned in the IJN. Assigned to SubDiv 33. Lt Shigemoto is the Commanding Officer.

6 August 1945: The First Atomic Bombing of Japan.:
HA-204 is enroute to Kure for a hull refit. After 0815, off Etajima Island, the surfaced submarine and its bridge crew are exposed to radiation from the nuclear explosion over Hiroshima. Lt Shigemoto receives severe burns.

2 September 1945:
HA-204 is surrendered to the Allies at Sasebo.

October 1945:
Grounded in Aburatsu Bay off Miyazaki coast.

30 November 1945:
Removed from the Navy List.

August to October 1948:
Scrapped at the Nishimura Tekkosho ironworks plant.


Authors' Notes:
Special thanks for help in preparing this TROM go to Dr. Higuchi Tatsuhiro of Japan.

Bob Hackett and Sander Kingsepp.

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