After her repairs were completed, "Curacoa" was assigned to the Western Approaches where she escorted convoys in and around the British Isles for most of the next two years. By September 1941, Type 285 and Type 282 fire-control radars had been fitted. As part of the deception efforts for Convoy PQ 17, the ship formed part of a decoy convoy that sailed on 29 June 1942, but was not spotted by the Germans. By September 1942, her anti-aircraft suite had been reinforced by five single mounts for Oerlikon light AA guns; a Type 273 long-range surface-search radar was added.