(HA-201 - colorized photo)
IJN Submarine HA-201:
Tabular Record of Movement
© 2006-2019 Bob Hackett and Sander Kingsepp
1 March 1945:
Sasebo Navy Yard. Laid down as Submarine No.
4911, the lead boat of the Sen-Taka Sho
(High-speed Small Type) class. 
5 April 1945:
Provisionally numbered HA-201 and attached to Sasebo
15 April 1945:
Lt Sato Yoshikazu (70)(former torpedo officer of
I-361) is appointed the Chief Equipping Officer (CEO).
23 April 1945:
Launched as HA-201.
31 May 1945:
Sasebo. HA-201 is completed and registered in the IJN.
Attached to Sasebo Naval District. Assigned to Captain Koizumi Kiichi's SubDiv
33, Kure Submarine Flotilla for working-up. Lt Sato Yoshikazu is the
20 July 1945:
Reassigned to SubDiv 52 under Captain Yokota Minoru
(former staff operations officer at SubRon 11). Continues working-up in Inland
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-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.
 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.
 Lt Sato's first name has several possible readings.
Thanks go to Dr. Higuchi Tatsuhiro of Japan, Mr. Derek Waller of the UK
and the fellow submarine enthusiast Steven Eckhardt of Australia.
– Bob Hackett and Sander Kingsepp.
Back to Submarine