Consequences of applying MARPOL requirements to operational carbon intensity (CII) and approaches for their improvement

Abstract

The paper discusses the existing and currently being developed MARPOL regulatory framework concerning the operational carbon intensity of marine vessels (CII). In order to create fair and equal conditions for all shipowners, when calculating the CII indicator of a transport vessel, special coefficients and voyage adjustments are used. The purpose of these tools is taking into account external factors outside the shipowner's area of responsibility and control in the structure of ship fuel consumption (weather, characteristic of the vessel, specific operating modes, etc.). A study of the fleet of Russianflagged vessels has shown that some of their features will not allow them to have the required CII value, taking into account the planned tightening of the calculation methodology for CII. Thus, the task of Register specialists involved in IMO procedures for evaluating revised and new CII elements is to adjust these new CII elements in the interests of domestic shipowners without compromising environmental safety. These corrective measures involve the development of new directions and approaches to improve the CII requirements presented in this article.