IJN Submarine HA-101:
Tabular Record of Movement

2006-2015 Bob Hackett & Sander Kingsepp

Revision 2

8 June 1944:
Tanagawa. Laid down at Kawasaki's Senshu Works as a Sensuikan Yu Sho (Small Supply Submarine) No. 4601, (SS) Type.

22 August 1944:
Launched and numbered HA-101. Transferred to Kobe Kawasaki Yard. [1]

31 August 1944:
Lt Kunihiro Nobuharu (68)(former navigating officer of I-45) is appointed the Chief Equipping Officer.

22 November 1944:
Kobe. Completed and commissioned in the IJN. Assigned to SubRon 11 for working up. Lt Kunihiro is the Commanding Officer.

Mid-January 1945:
Inland Sea. Works up in Iyo Nada Sea with HA-102 and HA-104.

27 January 1945:
Reassigned to Rear Admiral Owada Noboru's (former CO of YAMASHIRO) SubRon 7.

Early February 1945:
Transferred to Yokosuka for a series of exercises with HA-102.

20 Mar 1945:
SubRon 7 is disbanded. Reassigned to the newly-established SubDiv 16 (supply) under Captain Imaizumi Yoshijiro (former CO of NAKA). Lt Kurashina Yasusuke (68)(former CO of HA-109) is appointed the new CO.

13 May 1945:
Off Iyo-Mishima Island, N of Shikoku. Participates in deep-diving tests of an IJA YU-class submarine.

17 June 1945:
Departs Yokosuka for a supply run to Minami-Torishima (Marcus) Island.

28 June 1944:
Arrives at Minami-Torishima, unloads her cargo, then departs for Yokosuka.

7 July 1945:
Returns to Yokosuka. Starts a rebuild to enable her to carry aviation fuel.

25 July 1945:
Lt Jinbo Masaharu (69)(former CO of HA-108) is appointed CO.

2 September 1945:
Yokosuka. HA-101 is surrendered to the Allies.

15 September 1945:
Removed from the Navy List.

October 1945:
Tokyo. Scrapped at the Uraga Dockyard. [2]

Authors' Notes:
[1] HA-101 class boats (except those built by Mitsubishi) were laid down and launched at Senshu yard (Tanagawa), but then transferred to Kobe yard for completion.

[2] Sources are divided on the HA-101's fate. Some have her scuttled off Shimizu in October 1945.

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

Bob Hackett and Sander Kingsepp.

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