Chile has released a new version of Nautical Chart 8, covering its Southern waters, that has been denounced by Argentina as violating the 1984 Treaty of Peace and Friendship between the two countries.
Chile acknowledges that the extent of its continental shelf, projected outward from the Diego Ramírez Islands, is being asserted in preparation for a filing that it intends to make later this year with the Commission on the Limits of the Continental Shelf (CLCS).
Argentina charges that this assertion violates the Treaty on Peace and Friendship because it, crosses the 67o 16’ meridian, which is recognised in the Treaty as the boundary between the two countries’ maritime zones. The Argentine Foreign Ministry stated, “The measure attempted by Chile intends to appropriate a part of the Argentine continental shelf and a large area of the seabed and ocean.“
Chile asserts that its CLCS submission will be in accordance with the United Nations Convention on the Law of the Sea (UNCLOS), which calls for States to make unilateral submissions regarding the extent of their continental shelves. UNCLOS calls for overlapping shelves to be delimited only after the CLCS has made recommendations based on all States’ claims.
The CLCS made a recommendation based on Argentina’s submission, excluding an area around the disputed Islas Malvinas/Falkland Islands, in 2016.
Chile’s Nautical Chart 8, as annotated by Daniel Filmus of the Argentine Foreign Ministry
The green line shows the meridian agreed to in the 1984 Treaty was agreed. The red area shows portions of the continental shelf claimed by Chile that lie east of the meridian.