The Provision of the Interpretation Act 1971 defines the “Nauruan territorial waters" as:
That area of water, and the waters and subsoil beneath it, enclosed by a line every part of which is at a distance
of twelve miles from the nearest point of the outer edge of the reef surrounding the Island of Nauru which is exposed at low tide and, where there is an opening in the reef, from a straight line across the outer edge of that opening.
Based on the Samoa Maritime Zones Order 2017 which repealed the Maritime Zones Order 2014, the points to be used for
determining the outer limits of the territorial sea are 12 nautical miles from the baseline. The list of the coordinates are stated under the Samoa Maritime Zones Order 2017.
https://www.un.org/depts/los/LEGISLATIONANDTREATIES/PDFFILES/WSM_2017_M…
The 12 nautical mile layer for Vanuatu was extracted from the Global Marine Regions platform (https://www.marineregions.org/) since Vanuatu has not published it officially with UNDOALOS.
Nauru's Territorial Sea Baseline was defined using the 1993 topographic map produce by Survey Graphics Pty Ltd of Perth, Western Australia, under the direction of the Ministry of Island Development and Industry. The map is based on UTM Grid Zone 58, which is referred to the World Geodetic System 1972 (WGS 72). The WGS 72 coordinate system was then converted to WGS 84 using transformation parameters tabled on Nauru Maritime Boundaries Technical Report (TR 399).
The Republic of the Marshall Islands Maritime Zones Declaration Act 2016 (Nitijela Bill No. 13) repeals the Marine Zones (Declaration) Act 1984 and underlines the delineation and demarcation of the Republic of Marshall Islands territorial sea. It further states that the territorial sea comprises of the sea having:
(a)as their inner limits, the baseline and
(b)as their outer limits, a line measured seaward from that baseline, every point of which is distant 12 nautical mils from the nearest point of that baseline.
The Maritime Zones Act 2013 states that the baseline of the territorial sea of Niue is measured from the low-water mark along the coast of Niue, or where there is a coral reef along any part of the coast of Niue, the low-water mark along the outer edge of the coral reef.
The territorial sea comprises those areas of the sea having, as their inner limits, the baseline and, as their outer limits, a line measured seaward from that baseline, every point of which is distant 12 nautical miles from the nearest point of the baseline.