The squadron was reformed form 'G' flight at RAF Bowmore, Strathclyde on 13 March 1941, as part of No. 15 Group of Coastal Command. The unit was equipped with the three Short G class and two Short C class (Clio and Cordelia) flying boats, re-equipping with the Catalina Mk.Ib in June 1941. The squadron deployed to RAF Pembroke Dock on 4 August, becoming non-operational there for lack of serviceable aircraft until they moved to RAF Lough Erne on 19 April 1942, where they re-equipped with the Catalina Mk.IIIa the next month. In August they returned to Pembroke Dock, changing to Sunderland Mks.II and IIIs in September. The squadron was disbanded on 17 April 1943 at Pembroke Dock.