Japanese Oilers

YUSOSEN!

(A wartime Standard Type 1TL tanker)

ISSHIN MARU:

Tabular Record of Movement

© 2010-2011 Bob Hackett and Peter Cundall.


15 April 1943:
Aioi. Laid down at Harima Zosensho as a 10,044-ton Type 1TL wartime Standard Merchant Tanker for the Nippon Sekiyu (Oil Co.), K. K.

17 September 1943:
Launched and named ISSHIN MARU.

15 November 1943:
Completed.

28 December 1943:
Departs Kure

29 December 1943:
Arrives at Moji.

30 December 1943:
Departs Moji for Balikpapan, Borneo in an unknown convoy.

31 December 1944:
Off Kyushu. At 2245, ISSHIN MARU’s rudder malfunctions at 32-13N,129-50E. She will not answer the helm and cannot keep up with the convoy.

1 January 1944:
At 1223, rudder repairs are completed. ISSHIN MARU attempts to catch up with the convoy. At 1950 (I) LtCdr John A. Tyree’s USS FINBACK (SS-230) SJ radar makes first contact with a large target at 22,000 yards. When the range closes to 9,500 yards the target is identified as a tanker making 14 knots and zigzagging every 10 minutes.

2 January 1944:
East China Sea. 23 n. miles NW of Naze, Amami O-Shima, Ryukyus. At 0110, FINBACK starts her attack run on the surface. The target is unescorted. At 0154, Tyree fires three torpedoes and gets two hits that stop ISSHIN MARU. At 0204, ISSHIN MARU opens fire at FINBACK with her deck guns. Tyree takes FINBACK to periscope depth and at 0336, he fires fires three torpedoes from 1,300 yards. All hit. At 0341, FINBACK is rocked by a terrific explosion. Shortly thereafter, ISSHIN MARU sinks at 28-36N, 129-03E. All 58 crew members are KIA.


- Bob Hackett and Peter Cundall.


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