专属经济区
The Fishery Protection Squadron is charged with protecting the British fishing industry, providing security to the oil and gas fields in the North Sea and other duties in the United Kingdoms Exclusive economic zone. It consists of three warship; HMS "Tyne", HMS "Severn" and HMS "Mersey". In the future the Batch 1 Rivers will be forward deployed to their relevant ports; HMS Tyne in Newcastle, HMS Severn in Cardiff and HMS Mersey in Liverpool.