Considering IMO CO2 targets for 2030, it is quite clear that compliance can be achieved in the short term by optimising vessel operations and implementing efficiency-boosting technologies. But hitting IMO's tough 2030 and 2050 targets requires an effort on multiple fronts. Switching to an alternative future fuel and investing in fuel flexibility offers immediate benefits in terms of carbon, SOx and NOx reductions and compliance with regulations such as EEXI. The key considerations when investigating a fuel conversion of an existing ships are for example: