(Type KD7 submarine scanned from "Submarines of the Imperial Japanese Navy" by Polmar and Carpenter)

IJN Submarine I-178:
Tabular Record of Movement

2001-2013 Bob Hackett & Sander Kingsepp
Revision 2

21 May 1941:
Laid down at Mitsubishi Kobe Yard as Submarine No. 156.

1 November 1941:
Designated I-178.

24 February 1942:

25 November 1942:
LtCdr Utsugi Hidejiro (52)(former CO of I-5) is appointed the Chief Equipping Officer.

26 December 1942:
Kobe. I-178 is completed and registered in the IJN. Attached to Sasebo Naval District. Assigned to Kure Submarine Flotilla. Cdr Utsugi Hidejiro (former CO of I-5) is the Commanding Officer.

I-178 is assigned to the Kure SubRon with I-177, RO-106 and RO-107.

25 February 1943:
SubDiv 22 is reactivated at Kure Submarine Flotilla with I-178, -177 and I-180.

26 February 1943:
Finishes diving tests off Kure.

15 March 1943:
SubDiv 22 is reassigned to SubRon 3.

30 March 1943:
Departs Kure with I-177.

7 April 1943:
Arrives at Truk.

10 April 1943:
Departs Truk with I-177 to patrol off the eastern coast of Australia on her first war patrol.

27 April 1943:
100 miles off Port Stephens, Australia. I-178 torpedoes and sinks 7,176-ton American "Liberty" ship LYDIA M. CHILDS at 33-08S, 153-24E. CHILDS was bound for Australia with a cargo of Army tanks.

An hour later a RAAF Catalina from Rathmines makes three bombing runs on a submarine in the same area but she escapes.

18 May 1943:
Returns to Truk.

1 June 1943:
LtCdr Utsugi is promoted Cdr.

4 June 1943:
Departs Truk on her second patrol off the eastern coast of Australia.

17 June 1943:
Cdr Utsugi sends a routine signal to the Sixth Fleet.

65 miles SE of Coffs Harbour. That same evening, Pilot Officer Barry Harrison's Bristol "Beaufort" of the RAAF's No. 32 Squadron successfully attacks a surfaced submarine. Later, Flight Officer Cashway's Beaufort attacks the same submarine that is still proceeding on the surface and inflicts further damage.

18 June 1943:
An oil slick is sighted off Nambucca Heads. The attacked submarine may have been I-178. Thereafter, she fails to answer signals from Headquarters, Sixth Fleet.

Based on radio decrypts, the Sixth Fleet credits Cdr Utsuki with damaging one large and one small transport vessel.

4 August 1943:
Presumed lost off the eastern coast of Australia with all 89 hands. Cdr Utsugi is promoted Capt posthumously.

1 September 1943:
Removed from the Navy List.

Authors' Note:
Some sources claim I-178 was depth charged and sunk with all hands 30 miles W of Espiritu Santo, New Hebrides by subchaser USS SC-699 on 29 May 1943; however, since I-178 was in contact with the Sixth Fleet almost three weeks later, such claims must be discounted.

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

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