The marine sector needs to decarbonise: business as usual will not be sufficientWith COVID-19 accelerating a global focus on climate and biodiversity, we expect efforts to cutgreenhouse gas emissions in the shipping sector to intensify. The maritime industry, and shipping inparticular, remains a big polluter, accounting for 13% of the carbon dioxide emitted by the transportsector, and it has been slower than other sectors to respond. The International MaritimeOrganisation (IMO), the shipping sector’s main regulator, is targetting a 50% reduction in GHGemissions and a 70% reduction of CO2 by 2050. Yet in a business continues as usual scenario,GHGs could actually increase by 250% by 2050 relative to 2008 levels (see Charts 1 and 2), asglobal sea freight is set to triple by then. This highlights the scale of the challenge facing the sector.