SENSUIKAN!
IJN Submarine HA-204:
Tabular Record of Movement
© 2006-2019 Bob Hackett & Sander Kingsepp
Revision 2
5 April 1945:
Sasebo Navy Yard. Laid down as the Sen-Taka Sho
(High-speed Small Type) class Submarine No. 4914.
1 May 1945:
Renumbered HA-204 and provisionally attached to
Sasebo Naval District.
15 May 1945:
Lt Shigemoto Shunichi (70)(former navigating officer
of I-47) is appointed the Chief Equipping Officer (CEO).
1 June 1945:
Launched as HA-204.
25 June 1945:
Completed and commissioned in the IJN. Attached to
Sasebo Naval District. Assigned to SubDiv 33 for working-up. Lt Shigemoto
Shunichi is the Commanding Officer.
6 August 1945: The First Atomic Bombing of Japan:
HA-204 is en
route 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.
29 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 and the fellow submarine enthusiast Steven Eckhardt
of Australia.
– Bob Hackett and Sander Kingsepp.
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