Mid-Atlantic gap

The Mid-Atlantic gap is a geographical term applied to an undefended area of the Atlantic Ocean during the Battle of the Atlantic in the Second World War. The region was beyond the reach of land-based RAF Coastal Command anti-submarine warfare (ASW) aircraft. This resulted in many merchant shipping losses to U-boats. The gap was eventually closed in May 1943, as growing numbers of Very Long Range Liberators (VLR) and escort carriers became available and as basing problems were solved.