Top 10 Official Territorial Claims on Antarctica and Possible Future ClaimsMetal_Treasure Several countries maintain a territorial claim on territories in Antarctica. These countries have built their scientific observation and study facilities in Antarctica within the claimed territory.
Territorial claims are pie-shaped wedges of Antarctica. They are pie-shaped because all they start from one point - the South Pole - and go radially outward, towards the equator.
The map of the territorial claims looks literally like a cut birthday cake, with bigger or smaller triangular slices. The Australian territorial claim is the largest.
The Top Ten
It's an external dependent territory of Australia - 5,896,500 km2 claimed in 1933 (the largest claim) - Metal_Treasure
Overseas territory of the United Kingdom - 1,709,400 km2 claimed in 1908 (the first and the oldest claim). It's the pie between 20°W - 80°W.
BUT most of the UK pie is also claimed by another country! Only the sector from 20°W - 25°W is free of overlapping claims.
United Kingdom, Argentina (25°W - 53°W)
United Kingdom, Argentina, Chile (53°W - 74°W)
United Kingdom, Chile (74°W - 80°W) - Metal_Treasure
Area - 2,700,000 km2 claimed in 1939 - Metal_Treasure
Area - 1,461,597 km2 claimed in 1942. It's bounded by 25°W - 74°W, which is part of the territory already claimed by the UK. - Metal_Treasure
Commune of Antártica Chilena Province - 1,250,258 km2 claimed in 1940.
Overlaps with the UK from 53°W - 80°W, plus also with Argentina from 53°W - 74°W. - Metal_Treasure
Area - 450,000 km2 claimed in 1923 - Metal_Treasure
District of the French Southern and Antarctic Lands - 432,000 km2 claimed in 1924
Claimant - France - Metal_Treasure
Area - only 154 km2 claimed in 1929 - Metal_Treasure
Former USSR (Soviet Union) had a claimed territory, and Russia, as successor state of the Soviet Union, maintain they have reserved the right to make future claims. - Metal_Treasure
There have been speculations on Brazil making a claim bounded by 28° W and 53° W, thus overlapping with the Argentine and British claims but not with the Chilean. - Metal_Treasure
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2. Queen Maud Land (Dependency of Norway)
3. British Antarctic Territory