1. For each ship and in the event of a change of verifier, the verifier shall assess the conformity of the monitoring plan with the requirements set out in Articles 7, 8 and 9. Where the verifier’s assessment identifies non-conformities with those requirements, the company concerned shall without undue delay revise its monitoring plan accordingly and submit the revised plan for a final assessment by the verifier before the reporting period starts. The company concerned shall agree with the verifier on the time-frame necessary to introduce those revisions. That timeframe shall in any event not extend beyond the beginning of the reporting period.