HIJMS Submarine I-373: Tabular Record of Movement

2001-2002 Bob Hackett & Sander Kingsepp

Revision 1

14 April 1945:
The I-373 is completed at the Yokosuka Navy Yard, commissioned in the IJN and based in the Yokosuka Naval District. LtCdr Inobu Yukio is the Commanding Officer.

1 May 1945:
Vice Admiral Daigo Tadashige assumes command of the Sixth Fleet (Submarines).

16 June 1945:
Departs Yokosuka.

17 June 1945:
Arrives at Sasebo. The I-373 is converted to carry aviation fuel.

20 June 1945:
Assigned to SubDiv 15, Sixth Fleet.

9 August 1945:
The I-373 departs Sasebo on her first tanker run to Formosa.

13 August 1945:
East China Sea. LtCdr Inobu is zigzagging on a SW base course at 10 knots when the I-373 is picked up by Cdr R. R. Managhan's USS SPIKEFISH (SS-404) SJ radar. A few minutes later, the SPIKEFISH makes visual contact. Managhan begins tracking only to lose contact after about an hour when Inobu submerges.

14 August 1945:
190 miles SE of Shanghai. The SPIKEFISH regains radar contact two hours later at 8, 600 yards and tracks the target until morning when it is sighted on the surface. The silhouette identifies the target to be a large I-class submarine. Cdr Managhan fires a full salvo of six bow torpedoes and obtains two hits that sink the I-373 by the stern at 29-02N, 123-53E. The SPIKEFISH picks up one survivor of the I-373's crew of 85. The survivor claims that his submarine was the I-382 (no such sub).

The I-373 is the last Japanese submarine sunk in World War II.

15 September 1945:
Removed from the Navy List.


Authors' Note: Special thanks for help in preparing this TROM go to Dr. Higuchi Tatsuhiro of Japan.
Bob Hackett and Sander Kingsepp.

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