Each State may, at the time of signature or when depositing its instrument of ratification, acceptance, approval or accession, by declaration addressed to the Secretary General of the Council of Europe declare that, when acting as an intervening State, it may subject its intervention to the condition that persons having its nationality who are surrendered to the flag State under Article 15 and there convicted of a relevant offence, shall have the possibility to be transferred to the intervening State to serve the sentence imposed.
Vsaka država lahko ob podpisu ali deponiranju svoje listine o ratifikaciji, sprejetju, odobritvi ali pristopu z izjavo, naslovljeno na generalnega sekretarja Sveta Evrope, izjavi, da pogojuje svoje delovanje kot država, ki ukrepa, s tem da imajo njeni državljani, ki so bili predani državi, pod katere zastavo pluje plovilo, v skladu s 15. členom in tam tudi obsojeni za določeno kaznivo dejanje, možnost, da so za prestajanje kazni premeščeni v državo, ki ukrepa.