At 05.49 hours on 11 Apr, 1943, U-188 fired a torpedo at the convoy ON-176 southwest of Iceland and observed a hit on a tanker after 1 minute 34 seconds, which finally sank after 45 minutes with a broken back. At 05.50 hours, two torpedoes were fired and after 1 minute 58 seconds and 2 minutes 11 seconds hits on two ships were heard. At 05.52 hours again two torpedoes were fired, which hit a fourth ship after 1 minute 58 seconds that began to settle by the bow. However, Allied records indicate that only HMS Beverley (H 64) (LtCdr R.A. Price, RN) was hit and sunk at that time.

On 9 Apr, 1943, HMS Beverley had been seriously damaged in a collision with the British steam merchant Cairnvalona (4929 tons) and took station in the rear of the convoy, until she was torpedoed some 30 hours later.