Parent Layer: Maritime Boundaries

Name: Territorial Sea Limit (TS)

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Description: AMB is a dataset depicting the limits of Australias maritime jurisdiction as set out under UNCLOS and relevant domestic legislation. To this extent, AMB provides a digital representation of the outer limit of the 12 nautical mile territorial sea, the 24 nautical mile contiguous zone, the 200 nautical mile Exclusive Economic Zone and Australias Continental Shelf, as well as, the 3 nautical mile coastal waters. Where Australia has agreements with neighbouring countries these treaty lines are also included in the data. The dataset has been compiled by Geoscience Australia in consultation with other relevant Commonwealth Government agencies including the Attorney-Generals Department, the Department of Foreign Affairs and Trade as well as the Australian Hydrographic Office. Australias maritime boundaries are computed from the territorial sea baseline which has been mapped by Geoscience Australia using the most reliable information available at the time it was compiled. However, it should be noted that the territorial sea baseline supplied in AMB is not intended to be a comprehensive coastline dataset and only contains features relevant to maritime boundary determination. Basepoints that generate the zone boundaries are supplied in separate files. Other data included in AMB are the Scheduled Area boundaries of the Petroleum (Submerged Lands) Act 1967 (Cth), individual line and point files depicting maritime boundary agreements with neighbouring countries, and polygon data of the various maritime zones supplied primarily for mapping purposes. AMB data is clearly attributed providing information about the source material used to determine the baseline and linking the baseline with the various limits. The data is available in geographical coordinates which can be referenced to the WGS84 datum which is used on charts and by mariners more generally. The area of coverage of the AMB data is for the whole of the Australian marine jurisdiction which includes waters adjacent to the mainland, offshore islands and External Territories. The geographical extent is approximately between the latitude limits of 7 S to 70 S and the longitude limits 40 E to 175 E. This dataset includes the following disclaimer: AMB data is a digital representation of the territorial sea baseline and of the outer limits of Australias maritime zones. The baseline and zones are established under the Seas and Submerged Lands Act 1973. The data also includes a representation of the limits by which the waters adjacent to each of the Australian States and of the Northern Territory are determined under the Coastal Waters (State Powers) Act 1980, Coastal Waters (Northern Territory Powers) Act 1980 and the Petroleum (Submerged Lands) Act 1967. In the event of an inconsistency between AMB data and the baselines and limits under the legislation, the latter prevails. The datasets include: BASELINES & LIMITS: amb_ts_baseline is the territorial sea baseline (TSB). The TSB is the line of lowest astronomical tide (LAT) around the Australian mainland, islands and territories including straight, bay and river closing lines. amb_lte_baseline is the line of LAT around low tide elevations (LTE) which form part of the TSB. amb_cw_limit is the outer limit of coastal waters. amb_ts_limit is the outer limit of Australias territorial sea. amb_cz_limit is the outer limit of Australias contiguous zone. amb_eez_limit is the outer limit of Australias exclusive economic zone. amb_cs_limit is the outer limit of Australias continental shelf (including areas beyond 200 nautical miles, as submitted to the Commission on the Limits of the Continental Shelf). MAP DATA: amb_cw_poly depicts the combined land and marine areas for each state and territory. amb_ts_poly depicts Australias territorial sea. amb_cz_poly depicts Australias contiguous zone. amb_eez_poly depicts Australias exclusive economic zone. amb_cs_poly depicts Australias continental shelf. PETROLEUM (SUBMERGED LANDS) ACT BOUNDARY amb_psla_boundary are the boundaries defined in the Petroleum (Submerged Lands) Act as amended to 2002. These boundaries are used to define the adjacent areas for each State/Territory for the purpose of this Act. TREATIES: amb_france_kerg_treaty is the boundary in the vicinity of Heard and Kerguelen Islands agreed to in the Australia-France delimitation treaty 1982. amb_france_nc_treaty is the boundary in the vicinity of New Caledonia agreed to in the Australia-France delimitation treaty 1982. amb_indon_71sb_treaty is the seabed boundary agreed to in the Australia-Indonesia delimitation treaty 1971. amb_indon_72sb_treaty is the seabed boundary agreed to in the Australia-Indonesia delimitation treaty 1972. amb_indon_97eez_treaty is the exclusive economic zone limit agreed to in the Australia-Indonesia delimitation treaty 1997. amb_indon_97sb_treaty is the seabed boundary agreed to in the Australia-Indonesia delimitation treaty 1997. amb_indon_mou_treaty is the box agreed to in the Australia-Indonesia Memorandum of Understanding concerning traditional fishing in the vicinity of Ashmore Reef. amb_indon_pfsel_treaty is the line agreed to as part of the Australia-Indonesia Provisional Fisheries Surveillance and Enforcement Agreement. amb_nz_treaty is the boundaries given in the Australia-New Zealand treaty delimiting areas of seabed and exclusive economic zone. amb_png_fish_treaty is the fisheries jurisdiction boundary agreed to in the Australia-Papua New Guinea delimitation treaty 1985. amb_png_prz_treaty is the protected zone boundary agreed to in the Australia-Papua New Guinea delimitation treaty 1985. amb_png_seabed_treaty is the seabed boundary agreed to in the Australia-Papua New Guinea delimitation treaty 1985. amb_png_ts_treaty is the territorial sea boundary agreed to in the Australia-Papua New Guinea delimitation treaty 1985. amb_solomon_treaty is the sea and seabed boundaries agreed to in the Australia-Solomon Islands delimitation treaty 1989. amb_timor_jpda_treaty is the Joint Petroleum Development Area agreed to in the Australia-Timor Leste Timor Sea Treaty 2002.

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