Australia claims an Exclusive Economic Zone (EEZ) from the Australian Antarctic Territory. However, the Australian proclamation of an Antarctic EEZ is contested. The effect of Article IV of the 1959 Antarctic Treaty (which prohibits new territorial claims or the extension of existing claims in the Antarctic) would seem to be that an EEZ cannot be claimed in relation to territory to which that Treaty applies (south of 60° South). The provisions of the United Nations Convention on the Law of the Sea (UNCLOS) define the exclusive economic zone of a coastal state as up to 200 nautical miles (370 km) from the baseline from which the territorial sea is measured.