One of the world’s biggest charterers has said shipping risks becoming a business that investors will not touch unless regulators act swiftly to impose a global price on carbon emissions.

The tax would need to be at a level that would make new low-carbon fuels competitive.

The senior Trafigura executive said that to help catalyse action, shipowners need to step up immediately and argue for the International Maritime Organization to create a meaningful carbon levy to head off regional moves in Europe and the US.