The Marshall Island Exclusive Economic Zone was measured from the low water line of the seaward side of the normal baseline (coast), the low-water line of the seaward side of the reef fringing the coast or bounding any lagoon waters adjacent to any part of that coast. Marzone delimitation software was used to generate territorial sea limit using the World Geodetic System 1984 (WGS 84) reference datum as stipulated under the Republic of the Marshall Islands Maritime Zone Declaration Act 2016.
Normally, the baseline from which the territorial sea is measured is the low-water line along the coast as marked on large-scale charts officially recognized by the coastal state. This is either the low-water mark closest to the shore, or alternatively it may be an unlimited distance from permanently exposed land, provided that some portion of elevations exposed at low tide but covered at high tide (like mud flats) is within 12 nautical miles (22 km; 14 mi) of permanently exposed land.
The Marshall Islands Contiguous Zone was measured from the low water line of the seaward side of the normal baseline (coast), low-water line of the seaward side of the reef fringing the coast and bounding any lagoon waters adjacent to any part of that coast. MarZone delimitation software was used to generate the Contiguous zone using the World Geodetic System 1984 (WGS 84) reference datum as stipulated under the Republic of the Marshall Islands Maritime Zones Declaration Act 2016.
The Marshall Islands Territorial Sea Zone was measured from the low water line of the seaward side of the normal baseline (coast), low-water line of the seaward side of the reef fringing the coast and bounding any lagoon waters adjacent to any part of that coast. MarZone delimitation software was used to generate territorial sea limit using the World Geodetic System 1984 (WGS 84) reference datum as stipulated under the Tuvalu Maritime Zones Act 2012.