To facilitate the development of offshore renewable energy installations, the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Ireland defined two boundary lines between Northern Ireland and Ireland. This is to clarify responsibilities relating to the licensing, construction, and operation of offshore renewable energy installations. This shapefile provides the latitude and longitude of the points for the line North and the line East, extending from the coast to the 12 NM limit. The north line and east line were defined and agreed in an MoU signed in 2011 between UK and Ireland Governments for the lease of the seabed for the development of offshore renewable energy installations.