The European Maritime Safety Agency (EMSA) commissioned a report on the potential of renewable e-fuels in shipping decarbonization, focusing on e-diesel, e-methane, and e-methanol. These fuels, produced using renewable electricity and CO2, are seen as promising alternatives with high potential for maritime use. However, the report indicates that their impact on global shipping by 2030 may be limited due to infrastructure constraints. E-fuel production pathways such as methanol synthesis and Fischer-Tropsch synthesis require advanced technologies like Direct Air Capture (DAC) for non-biogenic CO2, which is still in the demonstration phase. The study suggests short-term reliance on electrolysis for renewable hydrogen and the use of biogenic residual CO2 as alternatives. Sustainability concerns, including emissions and environmental damages, raise challenges that need further development. Availability analysis highlights the need for significant growth in infrastructure to enable large-scale e-fuel production. Technological advancements, simultaneous development of key components, and stakeholder involvement are essential for overcoming availability barriers. The report stresses the importance of financial policy support, carbon taxes, and trading mechanisms to scale up DAC and reduce costs. The techno-economic analysis indicates that the cost competitiveness of e-fuels could improve by 2050, making them viable options for zero-carbon shipping. Global market-based measures are proposed to bridge the price gap between e-fuels and conventional fuels, encouraging their adoption and driving down prices through increased infrastructure and availability. Incentivizing e-fuel uptake is crucial for their widespread use in the maritime industry's decarbonization efforts.