Newly arrived outbound boats:
U-174 (Fregkpt Thilo) *, U-176 (Korvkpt Dierksen) *, U-254 (Kptlt Gilardone) *, U-256 (Kptlt Odo Loewe) *, U-438 (Kptlt Franzius) *, U-595 (Kptlt Quaet-Faslem) *, U-605 (Kptlt Schütze) *, U-660 (Kptlt Baur) *, U-705 (Kptlt Horn),

* U-boats that fired torpedo or used the deck gun

The convoy is sighted by U-593 when a group of 6 ships with 2 escorts has romped from the convoy due to the fog. U-593 attacks at once this small group and sinks one ship. U-593 is the driven off together with U-595.

The next day the boats cannot get close to the convoy : both U-454 and U-595 are severely damaged by the escorts and have return to port after the operation. U-210 is sunk by the Assiniboine.

From 7 Aug on, the outbound boats U-174, U-176, U-256, U-438, U-660 and U-705 reinforce the wolfpack. Until mid-day of the 8th all attacks from U-597, U-605, U-607, U-660 and U-704 fail or miss. Then U-176 and U-379 attack almost at the same time and sink three and two ships respectively. Confronted with the first serious attacks since nearly a year on the North Atlantic route, some complements on the merchant ships are panicking. Three ships are abandoned without reason and one of them is sunk by the U-176.

The escort is reinforced with the Polish destroyer Blyskawica and the British destroyer Broke and strikes back : the Dianthus sinks U-379. The destroyers are equipped with HF/DF and all night long the escorts make offensive sweeps towards contact and manage to keep the boats at bay. Only U-595 and U-607 fire at the escort and the convoy but both miss.

Towards morning all escorts except the Primrose are behind the convoy sitting on a U-boat contact but fortunately for the convoy it leaves now the black pit and air escort from Sqdn 120 is provided.

During day of the 9th U-174, U-254, U-256 and U-704 and in the morning of the 10th U-597 manage to fire at the convoy but no hits are secured. On mid-day the air escort temporarily drops out and since most of the escort are still chasing contacts on the rear, U-438 and U-660 can move in quickly and sink three and one ship respectively.