© 2009-2011 Bob Hackett, Sander Kingsepp and Peter Cundall
18 August 1944:
Tokyo. Laid down at Ishikawajima Ship Building, Ltd.
23 October 1944:
Launched and numbered CD-72.
25 November 1944:
Completed and registered in the IJN.
21 February 1945:
Off Wenchow, China. CD-72 and CD-150 are damaged in a collision.
10 April 1945:
CD-72 and kaibokan IKUNA are ordered to rendezvous off Tsuzu Bay (36-06N, 129-11E) at 1800, patrol that night, and enter port the next morning.
Tsushima Strait. SW of Iki Island (between Kyushu and Tsushima). At about 2200, LtCdr Everett H. Steinmetz’s USS CREVALLE (SS-291) torpedoes and damages IKUNA at 33-38N, 129-13E.
11 April 1945:
At 0350, USN codebreakers intercept and decrypt a message from kaibokan IKUNA that reads:
“Received torpedo attack by enemy submarine. Bow damaged. Neither anchor usable. Scheduled to arrive Sasebo ---- 1600.”
At 0357, the codebreakers intercept another message from IKUNA that reads: “This vessel, in company with CD-72, was patrolling P Section when at 2228 in position 33-38 N, 129-13 E detected radar interference and made contact bearing 90 degrees (270 degrees). We headed toward it using ---- and were attacked when we sighted three torpedoes off the bow. One of them hit bow and exploded under chain locker and magazine. We are able to navigate, but received following damage. 1. Bow is badly damaged and both anchors unusable. 2. No. 1 gun will not revolve. 3. ---- and ranging devices are damaged. 4. One man slightly wounded.”
20 June 1945:
CD-72 departs Seito (Tsingtao) with kaibokan OKI and an unidentified minesweeper escorting convoy TAFU consisting of DAIUN MARU No. 1, KONRI GO (KWEN LEE), SHINNEISHO GO, CHOKO MARU and an unidentified ship.
1 July 1945:
Yellow Sea. W coast of Korea, near Changshan. At about noon, in dense fog, CD-72 and an unidentified warship are escorting cargo ships KONRI MARU, DAIUN MARU No. 1 and DAIUN MARU No. 2 in shallow water. Suddenly, the cargo ships explode and sink. As the fog lifts, CD-72’s crew is able to make out a surfaced submarine approaching at high speed on a reciprocal course. CD-72 opens fire with all guns.
Cdr Frank C. Lynch's USS HADDO (SS-255) passes the kaibokan and crash dives in only 80 feet of water. With only about two fathoms below his keel, Lynch fires two Mark 27 “Cutie” acoustic torpedoes at each of the escorts. One hits CD-72 in the stern. She blows up and sinks at 38-08N, 124-38E. The other escort breaks off to begin rescuing survivors. HADDO escapes.
8 October 1945:
Removed from the Navy List.
Thanks for assistance go to Mr. Iwasaki Yutaka of Japan. Thanks also go to John Whitman of the USA for info on CNO intercepts of Japanese messages and to Erich Muehlthaler of Germany for info on
KONRI GO (KWEN LEE).
-Bob Hackett, Sander Kingsepp and Peter Cundall