SENSUIKAN!

IJN Submarine HA-209:
Tabular Record of Movement

2006-2015 Bob Hackett & Sander Kingsepp

Revision 1


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

31 May 1945:
Launched.

15 June 1945:
Lt (later Vice Admiral, JMSDF) Tsunehiro Eiichi (71) (former gunnery officer of I-165) is appointed the Chief Equipping Officer.

4 August 1945:
Completed and commissioned in the IJN. Assigned to SubDiv 52 under Captain Yokota Minoru (former CO of I-44). Lt Tsunehiro is the Commanding Officer.

11 August 1945:
Departs Sasebo for Kure, making an overnight stop at Imari Bay, Kyushu.

12 August 1945:
Departs Imari Bay for Moji Bight that morning. Awaits off Mutsure Island until the area is swept for mines, then makes an overnight stop at Moji.

13 August 1945:
Departs Moji that morning. Proceeding surfaced off Hesaki Lighthouse, HA-209 activates an acoustic mine. Two lookouts are blown overboard while a fire breaks out aft and the main ballast tanks develop a minor leak. The submarine goes dead in the water. A minesweeper takes she in tow and proceeds to Mitsubishi's Hikoshima Shipyard, Shimonoseki, where HA-209's two Type 95 torpedoes are landed.

15 August 1945:
In the morning, HA-209 is dry-docked at Hikoshima Shipyard. At noon, the Emperor Hirohito (Showa) broadcasts an Imperial Rescript that calls for an end to hostilities.

18 August 1945:
At the request of her CO, HA-209 is undocked. The crew runs her aground in shallow water off the nearby Ganryu Jima Island, Shimonoseki Strait. Initially a skeleton crew of nine remains aboard.

Late September 1945:
The wreck HA-209 is inspected by the USN representatives. It is decided to destroy it on site.

11 November 1945:
The wreck of HA-209 is blown up by a USN demolition team.

30 November 1945:
Removed from the Navy List.

August to November 1947:
Shimonoseki. The wreck of HA-209 is raised and scrapped at Mitsubishi's Hikoshima Yard.


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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