Coast and territorial sea The Isle of Man has a coastline of , and a territorial sea extending to a maximum of 12 nm from the coast, or the midpoint between it and other countries. The total territorial sea area is about 4000 km2 or 1500 sq miles, which is about 87% of the total area of the jurisdiction of the Isle of Man. The Isle of Man only holds exclusive fishing rights in the first 3 nm. The territorial sea is managed by the Isle of Man Government Department of Infrastructure.
coast and territorial sea the isle of man has a coastline of  and a territorial sea extending to a maximum of 12 nm from the coast or the midpoint between it and other countries the total territorial sea area is about 4000 km2 or 1500 sq miles which is about 87% of the total area of the jurisdiction of the isle of man the isle of man only holds exclusive fishing rights in the first 3 nm the territorial sea is managed by the isle of man government department of infrastructure