A coalition of flag states and industry associations is renewing its call for correction factors to be added to the Carbon Intensity Indicator (CII) regulation to account for the negative impact of short voyages and waiting times on ratings.

In a paper to be presented at the upcoming International Maritime Organization’s Marine Environment Protection Committee (MEPC), the group has gathered data revealing that a ship’s CII rating is likely to be determined more by its operating profile than its technical fuel efficiency.