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1. This Convention and the Protocol concerning Co-operation in Combating Oil Spills in the Wider Caribbean Region shall enter into force on the thirtieth day following the date of deposit of the ninth instrument of ratification, acceptance or approval of, or accession to, those agreements by the States referred to in article 25.
2. Any additional protocol to this Convention, except as otherwise provided in such protocol, shall enter into force on the thirtieth day following the date of deposit of the ninth instrument of ratification, acceptance, or approval of such protocol, or of accession thereto.
3. For the purposes of paragraphs 1 and 2, any instrument deposited by an organization referred to in article 25 shall not be counted as additional to that deposited by any member State of such organization.
4. Thereafter, this Convention and any protocol shall enter into force with respect to any State or organization referred to in article 25 or article 27 on the thirtieth day following the date of deposit of its instruments of ratification, acceptance, approval or accession.