In responding to this global challenge, member states of the International Maritime Organisation (IMO) agreed in April 2018 on an Initial GHG Strategy for international shipping. The strategy calls for shipping emissions to peak as soon as possible, for shipping's carbon intensity to be reduced by at least 40% by 2030 and for total emissions to be cut by at least 50% by 2050 compared to 2008, while aiming for full decarbonisation. To do so, new operational measures will need to be implemented for both the existing fleet and new ships and immediate reductions achieved by 2023.