Date of Action: 21 February 1943
USCG Units Involved: USCGC Spencer
Location: 51.25N x 27.28W
Credit by U.S. Navy? Yes
Enemy Warship's Commanding Officer: Oberleutnant zur See Wolfgang Leimkuhler
Enemy Casualties: 46 killed in action; no survivors
USCG Casualties: None
Misc: Credit under question by Royal Navy; see below.
After World War II, USCGC Spencer received credit by the US Navy for attacking and sinking the U-225, a Type VII U-boat, in the North Atlantic on 21 February 1943. Spencer was the flagship of the escort group, Task Force 24, Unit 24.1.3, escorting convoy ON-166. The British have since recorded that the U-225 was actually destroyed by the Liberator "S" of RAF No. 120 Squadron on 15 February 1943 and they have changed the official British records to reflect this change.
The renowned German historian, Dr. Jurgen Rohwer states that the Spencer "probably" attacked and sank the U-529 on this date, although the Spencer has not received official credit from the US Navy for that sinking.
For further information, see:
J. Rohwer and G. Hummelchen. Chronology of the War At Sea: 1939-1945: The Naval History of World War Two. Annapolis, Maryland: Naval Institute Press, 1992, p. 194.