Industry experts have warned charterparty terms will need to be rewritten if shipowners are to comply with upcoming decarbonisation regulations — with one leading voice claiming complex changes will make IMO 2020 "look like a walk in the park".

Concerns focus on the International Maritime Organization's minimum ship efficiency standards of the Energy Efficiency Existing Ship Index (EEXI) and the Carbon Intensity Index (CII) that require owners to optimise ship operations.