The decarbonization of the maritime sector has emerged as a global concern due to the shipping sector’s 3% contribution to world’s total greenhouse gas (GHG) emissions. Notably, the latest developments involving the adoption of more ambitious GHG reduction targets by the International Maritime Organization (IMO) highlight the increasing urgency to address maritime decarbonization. The revised IMO strategy includes indicative checkpoints and intermediary targets, aiming at emission reductions of at least 20% by 2030 and at least 70% by 2040 and reaching
net-zero emissions “by or around 2050 (Carbon Pulse 2023). As nations strive to meet such commitments, it becomes crucial to comprehend the latest challenges associated with decarbonizing the maritime sector. Using an expert survey, we seek to identify the key priorities for achieving effective and equitable decarbonization by engaging a diverse group of maritime fuel, policy, technology, and infrastructure experts to gain valuable insights into the industry’s most pressing challenges.