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1. If a State party to the OPRC Convention comprises two or more territorial units in which different systems of law are applicable in relation to matters dealt with in this Protocol, it may at the time of signature, ratification, acceptance, approval or accession declare that this Protocol shall extend to all its territorial units or only to one or more of them to which the application of the OPRC Convention has been extended, and may modify this declaration by submitting another declaration at any time.
2. Any such declarations shall be notified to the depositary in writing and shall state expressly the territorial unit or units to which the Protocol applies. In the case of modification the declaration shall state expressly the territorial unit or units to which the application of the Protocol shall be further extended and the date on which such extension takes effect.