Maritime shipping, a vital component of the global economy, is also a significant contributor to air pollution and climate change. Recent years have seen a surge in efforts to find sustainable solutions to lower emissions, with a focus on sustainable marine fuels (SMF). These fuels, derived from renewable sources like biofuels, hydrogen, and ammonia, offer a way for maritime vessels to reduce their carbon footprint. The International Maritime Organization (IMO) has set strict sulphur emissions limits to drive the adoption of cleaner fuels, while financial incentives and research funding are encouraging the development of SMF. Certification schemes like the International Sustainability and Carbon Certification (ISCC) are verifying biofuels and other sustainable fuels. The IMO aims to increase the uptake of zero or near-zero greenhouse gas (GHG) emissions technologies in international shipping by 2030. The EU is also implementing regulatory frameworks, including the FuelEU Maritime Regulation, to reduce GHG intensity and energy usage onboard vessels. The EU's Emissions Trading System (ETS) extension to the maritime sector and the requirements under FuelEU provide incentives for ship owners to use alternative marine fuels. Despite upcoming regulations, experts suggest that there are numerous opportunities for shippers to embrace sustainable practices and exceed compliance requirements.