 After arriving at Liverpool, the squadron disembarked and were stationed at RNAS Machrihanish (HMS Landrail).On 2 June 811 Squadron returned to "Biter" to escort further convoys between Liverpool and Halifax, including ON-207 in October.While at Naval Station Argentia in November, the squadron was supplied with the new American acoustic torpedo, codenamed the Mark 24 mine, but commonly known as "FIDO".