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The United Nations Secretary-General António Guterres

According to the U.N. Secretary-General’s announcement to member states dated March 12, 2025, Vietnam on March 7, 2025 deposited with the U.N. Secretary-General, pursuant to Article 16, paragraph 2 of the United Nations Convention on the Law of the Sea (UNCLOS) 1982, the chart showing straight baselines and outer limits of the territorial sea, as well as a list of geographic coordinates of points regarding the baseline for measuring the breadth of the territorial sea of the mainland territory of Vietnam in the Gulf of Tonkin.

On March 14, the U.N. website published detailed information about Vietnam’s submission at www.un.org/Depts/los.

The announcement also stated that the Vietnamese Government’s February 21, 2025 statement on the baselines for measuring the breadth of the territorial sea in the Gulf of Tonkin will be published in the next issue of the U.N.’s “Law of the Sea Bulletin.”

Source: VNA