Analysis of information sources in references of the Wikipedia article "Porkkalanniemi" in English language version.
In accordance with the Armistice Agreement, the Soviet Union confirms the renunciation of its right to the lease of the Peninsula of Hango, accorded to it by the Soviet-Finnish Peace Treaty of 12 March 1940, and Finland for her part confirms having granted to the Soviet Union on the basis of a fifty years lease at an annual rent payable by the Soviet Union of five million Finnish marks the use and administration of territory and waters for the establishment of a Soviet naval base in the area of Porkkala-Udd as shown on the map annexed to the present Treaty (Annex I).
