On 6 November 1943, SG2 was deployed to reinforce the escort of convoy HX264, threatened by a concentration of German U-boats South-East of Newfoundland. Early on the morning of 6 November, was sunk by the sloop , and later that day, after a U-boat was spotted on the surface by an aircraft from the aircraft carrier , three ships of SG2 (, and "Magpie") were ordered to attack the submarine, with being sunk by depth charges from "Starling" and "Wild Goose". From 20 December 1943 to 20 January 1944, "Magpie" was refitted at Liverpool before returning to service with SG2. On 31 January 1944, SG2 was operating Southwest of Ireland in support of Convoys SL47 and MKS38 when "Wild Goose" detected a submarine, , which had been damaged by a US Navy P4Y-1 bomber of VPB-110 two days before and was returning to France for repairs, on sonar. A series of attacks by depth charge and Hedgehog were carried out on the contact by "Wild Goose", "Magpie" and "Starling" before a large explosion brought up debris, including human remains and documents confirming the "U-592" was the submarine in question. "U-592" had been sunk with all hands. SG2 was then deployed in support of Convoys SL147 and MKS38, threatened by the Wolfpack Igel 2. On the night of 8/9 February 1944 "Wild Goose" first spotted a submarine which was sunk by depth charges from and "Wild Goose", and then detected a second submarine which was sunk by "Starling" and "Wild Goose". Meanwhile, spotted a third submarine, with "Magpie" coming up in support. Despite "Kite" being narrowly missed by an acoustic torpedo and very poor sonar conditions, which made tracking the submarine difficult, the two sloops delivered a series of depth charge attacks before being joined by "Starling", which directed "Magpie" in a Hedgehog attack, which scored two hits, with "Magpie" and "Starling" following up with two further depth charge attacks. These attacks destroyed the submarine, with a total of 252 depth charges and 48 Hedgehog projectiles expended against the submarine. Three German submarines (, and ) had been sunk in a few hours, although it is not completely clear which submarines had been sunk by which attack. "Magpie", together with "Starling" and "Kite", were officially credited with the sinking of "U-238".