LAW OF THE SEA · XXI-10

Portugal and the Agreement under the United Nations Convention on the Law of the Sea on the Conservation and Sustainable Use of Marine Biological Diversity of Areas beyond National Jurisdiction

Portugal became bound on 2025-05-28, by approval, the 19th state to do so.

Treaty

Agreement under the United Nations Convention on the Law of the Sea on the Conservation and Sustainable Use of Marine Biological Diversity of Areas beyond National Jurisdiction

State

Portugal

Signed

2023-09-20

Became bound

2025-05-28 — by approval

Between the two

616 days (1.7 years)

Treaty in force since

17 January 2026, in accordance with article 68(1) of the Agreement which stipulates: “This Agreement shall enter into force 120 days after the date of deposit of the sixtieth instrument of ratification, approval, acceptance or accession.”.

Depositary record

United Nations Treaty Collection

Approval is not ratification. It is a distinct act under the Vienna Convention on the Law of Treaties, and the depositary records it as such. The two are often written as though interchangeable; the record does not treat them that way, so neither does this page.

Where this sits

• 19 in order of becoming party
• 104 states bound in total
• New treaty adopted

Order is by the date the depositary records, and states that became bound on the same day share a position — eleven states became party to the Charter on 24 October 1945 and none of them was eleventh.

Every party to this treaty · Everything about Portugal