On 30 October, "Wild Swan" was transferred to the 7th Escort Group based at Liverpool. One early escort mission with the 7th Escort Group was Convoy HX83, which "Wild Swan" joined on 4 November. On the night of 4/5 November, the German U-boat , commanded by Otto Kretschmer, fresh from sinking the Armed Merchant Cruisers and , attacked the convoy, firing torpedoes from outside the convoy, with the torpedoes passing between "Wild Swan" and the destroyer , patrolling on the East side of the Convoy, and sinking the tanker . Neither "Wild Swan" or "Beagle" spotted "U-99", and despite seeing an explosion, did not realise that the attack had come from their side of the convoy. The crews of "Wild Swan" and "Beagle", both new to North Atlantic convoy operations, were criticised for keeping a poor lookout.