The boundaries are derived from historic records. The data is in British National Grid.Should you have any questions regarding this dataset please email gis@crownestatescotland.com Crown Estate Scotland manages some of the rights to coastal salmon fishing however we do not let or operate netting rights. This supports Scottish Government's convervation aims of wild fishery reform to reduce exploitation of vulnerable stock . To find out more about Crown Estate Scotland's function, purpose, and values visit our website.