For the purposes of Article 4(1), (2) and (3), companies shall, for each of their ships, determine the CO₂ emissions in accordance with any of the methods set out in Annex I, and monitor other relevant information in accordance with the rules set out in Annex II or adopted pursuant to it.

The F1Secretary of State may make regulations to amend the methods set out in Annex I and the rules set out in Annex II, in order to take into account relevant international rules as well as international and European standards F2... F3and to amend Annexes I and II in order to refine the elements of the monitoring methods set out therein, in the light of technological and scientific developments.