From Geoscience Australia
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Seas and Submerged Lands Act 1973 MapServer

Created 09/01/2026

Updated 09/01/2026

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The Seas and Submerged Lands Act (SSLA) 1973 is the Australian legislation that provides the domestic legal framework for Australia to declare its international offshore maritime zones, as provided for by the United Nations Convention on the Law of the Sea (UNCLOS) to which Australia is a party. Proclamations under the SSLA establish the territorial sea baseline, the territorial sea, the contiguous zone, the exclusive economic zone and the continental shelf. This service depicts official spatial representation of these proclamations. The service includes feature layers: Normal and Straight baselines limits and locations; Contiguous Zone and limit; Territorial Sea Zone and limit; Exclusive Economic Zone (EEZ), limits and locations; Continental Shelf limit and locations.

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Additional Info

Field Value
Title Seas and Submerged Lands Act 1973 MapServer
Language English
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/146b31a0-6f5e-45e9-8d50-a41b535667b6
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 14/07/2021
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        40.770382,
        -69.810438
      ],
      [
        173.990965,
        -69.810438
      ],
      [
        173.990965,
        -8.473407
      ],
      [
        40.770382,
        -8.473407
      ],
      [
        40.770382,
        -69.810438
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Seas and Submerged Lands Act 1973 MapServer". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/seas-and-submerged-lands-act-1973-mapserver