The global shipping fleet is under pressure to adopt low and zero-emission fuels to align with the International Maritime Organization's (IMO) climate goals. Ammonia and hydrogen are identified as potential fuel options, but their properties bring safety risks due to toxicity and flammability. DNV recently released a whitepaper focusing on the safe introduction of alternative fuels like ammonia and hydrogen for ships. Linda Hammer from DNV Maritime emphasizes the importance of shipowners engaging with flag states to navigate the approval processes. While IMO works on developing regulations for these fuels, shipowners can opt for the alternative design approval (ADA) process. DNV has established class rules for ammonia and plans to do the same for hydrogen to enhance consistency in design and operations. Crew training on handling these fuels is deemed essential. Only a few vessels have transitioned to using ammonia, showcasing the early stages of the shift. Collaboration with shipyards and crew training are critical components for the successful adoption of alternative fuels in the maritime industry.