At 12.20 hours on 10 Aug, 1942, U-660 fired a single torpedo, followed one minute later by a spread of two and then another single torpedo at the convoy SC-94 south of Iceland from the starboard side. They heard a detonation after 47 seconds, two more after 1 minute 30 seconds and a fourth after another 50 seconds. At 12.21 hours, U-438 (Franzius) attacked the convoy from the port side and observed a detonation after 2 minutes 30 seconds.
The Condylis was struck by a torpedo on both the port and the starboard side, so she must have been hit by both U-boats. The Oregon, Empire Reindeer and Cape Race were all hit on the starboard side and so must have been hit by U-660. The Oregon was only damaged and fell behind the convoy where she was finished off by U-438 later that day.

The master, 45 crew members, five gunners from the Cape Race (Master James Barnetson) and 12 crew members from the Port Nicholson on repatriation (she had been sunk by U-87 (Berger) on 16 June) were all rescued: 24 survivors by the HMS Nasturtium (K 107) (Lt C.D. Smith DSC) and 39 by the HMS Dianthus (K 95) (LtCdr C.E. Bridgeman) and landed at Liverpool on 14 August.