Pitcairn Islands Territorial Sea (12 Nautical Mile)

Pitcairn has been on the United Nations list of Non-Self-Governing Territories since 1946, following the declaration of the intention by the United Kingdom of Great Britain and Northern Island to transmit information on the High Commission Territories of the Western Pacific (which had included the Pitcairn Islands) under Article 73 e of the Charter of the United Nations. • See General Assembly resolution 66 (I) of 14 December 1946 Administering Power United Kingdom of Great Britain and Northern Ireland

https://www.un.org/dppa/decolonization/en/nsgt/pitcairn