Maritime shipping accounts for around 3% of global greenhouse gas emissions and approximately 80% of global freight transport. International and European climate targets, particularly within the framework of the International Maritime Organization (IMO) and the European Union, aim to make the sector largely climate-neutral by 2050. The long-term climate targets for the shipping sector can only be achieved through the parallel development of renewable fuels, shipbuilding and operational efficiency measures, as well as the construction of suitable infrastructure. This must be accompanied by the further refinement of the international and European regulatory framework. Transforming the maritime shipping sector requires the coordinated efforts of various stakeholders, such as ship operators, fuel manufacturers, port operators, shipyards, suppliers, investors, and regulatory authorities. The policy brief TAB-Fokus offers a compact overview of the content and results of our TA analyses for a climate-friendly shipping on four pages. Full report in German only.