Oldendorff Carriers has released a scathing critique of the Carbon Intensity Indicator (CII), which it says can cause vessels to emit more greenhouse gases when they try to improve their rating.

The German owner-operator has been working since June to quantify the effects of the incoming International Maritime Organization regulation and has compiled its research in a 46-page document, which is being circulated among its brokers and counterparties.

Executive director Henrik Christiansen told TradeWinds that Oldendorff wants its research to help the wider industry.