(HA-201 - colorized photo)
IJN Submarine HA-201:
Tabular Record of Movement
© 2006-2015 Bob Hackett and Sander Kingsepp
1 March 1945:
Sasebo Navy Yard. Laid down as a Sen-Taka-Ko
(High-speed Small Submarine). (NB: The HA-101 class were conceived as supply
submarines. HA-201, on the other hand, was a high-speed attack craft, somewhat
similar to the German Kriegsmarine's Type XXIII).
5 April 1945:
Provisionally numbered HA-201 and attached to Sasebo
19 April 1945:
Lt Sato Yoshikazu (70)(former torpedo officer of
I-363) is appointed Chief Equipping Officer. 
23 April 1945:
Launched and officially numbered HA-201.
31 May 1945:
Sasebo Navy Yard. HA-201 is completed and registered in
the IJN. Attached to Sasebo Naval District. Assigned to Kure Submarine Flotilla
in Captain Koizumi Kiichi's SubDiv 33. Lt Sato is the Commanding Officer.
20 July 1945:
Reassigned to SubDiv 52 under Captain Yokota Minoru
(former CO of I-26).
2 September 1945:
Surrenders at Sasebo.
2 November 1945:
Reassigned to Japanese Submarine Division Three under
LtCdr (later Captain) Paul R. Schratz with HA-202, HA-HA-203, HA-205 and HA-210.
30 November 1945:
Removed from the Navy List.
26 March 1946:
Washington, DC. At a Submarine Officer's Conference,
attended by former ComSubPac Vice Admiral Charles A. Lockwood, it is decided to
dispose of all remaining captured Japanese submarines by sinking.
1 April 1946: Operation "Road's End":
Goto Islands. HA-201 is tied to
the mammoth Sen Toku I-402
aviation gasoline tanker submarine and used for target practice by USS EVERETT
F. LARSON (DD-830) and GOODRICH (DD-831) after the rest of the former IJN boats
are scuttled. At 1624 the two submarines go down 16 miles off Kinai Island on
bearing 090 just beyond the 100-fathom line at 32-37N, 129-17E.
 Lt Sato's first name has several possible readings.
Thanks go to Dr. Higuchi Tatsuhiro of Japan and Mr. Derek Waller of the UK.
– Bob Hackett and Sander Kingsepp.
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