Vanuatu Archipelagic Baseline

The Maritime Zones Act No. 06 of 2010 states

2 Sovereignty of Vanuatu
The Sovereignty of Vanuatu comprises of:
(a) All islands within the archipelago including Mathew (Umaenupne) and Hunter (Leka) islands; and
(b) Any islands or reefs forming or formed within the Exclusive Economic Zone of Vanuatu.

3 Internal waters
The internal waters of Vanuatu form part of the national territory of Vanuatu and consist of':
(a) The waters on the landward side of the baselines from which the territorial sea of Vanuatu is measured; and
(b) For areas enclosed by archipelagic baselines- all waters that are contained within the innermost limits of the archipelagic waters.

4 Archipelagic waters
(1) In this section:
Low-water line means:
(a) The relevant low water datum line shown on the latest relevant British Admiralty charts or where there is no such datum, the lowest astronomical tide line; or
(b) If there is doubt on the relevant British Admiralty chart, the Minister may by order establish a chart for the purpose of this definition.
(2) The sovereignty of Vanuatu extends to the archipelagic waters, including the airspace over them as well as the seabed, subsoil and all resources contained in them and enclosed by the archipelagic baselines points 1:59 as prescribed by the Minister.
(3) The innermost limits of the archipelagic waters comprise of:
(a) The low water line; or
(b) In the case of the sea adjacent to a bay if':
(i) The bay has only one mouth and the distance between the low water line of the natural entrance points of the bay does not exceed 24 nautical miles- along a closing line joining those low water lines; or
(ii) Because of the presence of islands, the bay has more than one mouth and the distance between the low waterlines of the natural entrance points of each mouth added together do not exceed 24 nautical miles- along a series of closing lines across each of the mouths so as to join those low water lines; or
(iii) Neither paragraph (i) or (ii) applies- along a closing line 24 nautical miles in length drawn from low water line to low water line within the bay in such a manner as to enclose the maximum area of water that is possible with a line of that length; or
16 (c) In the case of the mouth or each mouth of a river which flows into the sea- a closing line across the river mouth between points on the low water line of its banks

https://www.un.org/depts/los/LEGISLATIONANDTREATIES/PDFFILES/vut_2010_A…

Chart:
https://www.un.org/depts/los/LEGISLATIONANDTREATIES/PDFFILES/MAPS/VUT_M…