A study by an environmental research group has concluded that countries should ban or restrict discharge from exhaust gas scrubbers.
The International Maritime Organization rules that came into force in January capped it at 0.5%, forcing shipowners to use low-sulphur fuel oil or install scrubbers that put the sulphur from burning high-sulphur fuel oil (HSFO) into the ocean.
Despite IMO approval, the non-profit International Council on Clean Transportation (ICCT) said discharges from the devices, which are on about 5% of the world fleet, should be restricted or prohibited.
