Ireland–United Kingdom

The overlapping continental shelf entitlements of Ireland and the United Kingdom were first delimited in 1988 through a bilateral boundary agreement. As originally defined, the boundary was composed of two lines, A and B. Line A was formed by 94 points and extended for 502 nautical miles, while Line B contained only 35 points but extended for 634 nautical miles.

A 1992 Protocol, supplementary to the 1988 Agreement, extended Line A northward by an additional 11 nautical miles. This was followed by a 2001 Exchange of Notes that provisionally delimited an additional northward extension in an area of continental shelf where Ireland and the United Kingdom wished to construct a natural gas pipeline. A 2013 Agreement between the two States finally revised portions of the 1988 boundary and finalized the 2001 provisional delimitation. The two States now have a multipurpose maritime boundary that delimits their overlapping exclusive economic zone and continental shelf entitlements. 

Map showing the maritime boundary between Ireland and the United Kingdom

Purchase the complete Ireland–United Kingdom Boundary Brief

$30.00Add to cart

Linked In YouTube
Subscribe to our newsletter (and receive a free map!) SUBSCRIBE