With the maritime sector contributing around 3% of global emissions, the industry is actively exploring greener fuel alternatives like LNG and hydrogen to reduce its carbon footprint. While the transition to cleaner power sources entails costly infrastructure changes, hybrid propulsion systems are emerging as a practical interim solution. These systems typically involve traditional diesel engines capable of running on LNG or conventional liquid fuels, along with diesel-electric systems incorporating battery-powered electric propulsion. Such technologies help vessels comply with environmental regulations at ports and offer a stopgap until more efficient green fuel options become mainstream. Hydrogen, despite its clean energy potential, faces challenges like low energy density, flammability, and lack of international regulations. Innovations like wind-assisted technologies, such as rotor sails and high-lift rigid wing systems, demonstrate significant emissions savings on maritime journeys. As the maritime industry navigates towards sustainability, collaboration and investment in infrastructure are crucial for the widespread adoption of eco-friendly solutions.