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 I-180 Continued

21 October 1943: Departs Rabaul.
26 October 1943: Arrives at Truk; departs on the same day.
2 November 1943: Arrives at Sasebo.
1 January 1944: The I-180 is SubRon 3’s SubDiv 22 with the 1-177, 1-181 and the 1-185. Departs Sasebo.
8 January 1944: Arrives at Truk.
19 January 1944: Departs Truk but suffers a mechanical failure and turns back.
21 January 1944: Arrives at Truk. Undergoes repairs
22 January 1944: Departs Truk.
30 January 1944: Arrives at Sasebo. Lt. Cdr. Fujita Hidenori (former CO of RO-103) relieves Lt. Cdr. Kusaka. Later, Lt. Cdr. Kusaka becomes the Equipping Officer for the I-400 that is under construction and then her CO.
 
16 March 1944: Departs Sasebo.
19 March 1944: Arrives at Ominato.
20 March 1944:
Departs Ominato to patrol in the Aleutians. Her estimated date of return to Ominato  is 13 May.
19 April 1944:  S of Alaska. The I-180 torpedoes and sinks the 7,176-ton American “Liberty” ship JOHN STRAUB that sinks by the bow at 54-22N, 163-24E.
 
25 April 1944: SW of Cherikof Island, Aleutians. Lt W. D. Jenckes USS GILMORE (DE-18) and the EDWARD C. DALEY (DE-17) are escorting a convoy from Dutch Harbour to Kodiak, Alaska. At 2230, the Gilmore’s SG radar picks up a surfaced submarine at 8,000 yards. At 4,000 yards, the “pip” disappears and contact is broken. The GILMORE soon acquires a sound contact at 2, 600 yards. In the next hour, Jenckes lays down three separate barrages of Mark 10 “hedgehogs”, each of twenty-four projector charges, but without result.
 
26 April 1944:At 0027, the GILMORE drops a pattern of 13 depth charges, but again without result. At 0107, Jenckes drops another pattern of 13 depth charges. At 0112, the Gilmore’s efforts are rewarded by a heavy underwater explosion that rocks the destroyer escort. The submarine – probably the I-180 – sinks at 55-10N, 155-40W. 
 
20 May 1944: Presumed lost with all hands in the Kodiak area
10 July 1944: Removed from the Navy List.