The article discusses the challenges and innovations in sustainable maritime shipping to reduce greenhouse gas emissions. Despite the efficiency of maritime transport, the industry accounts for a significant portion of global emissions. To combat this, various innovations are being explored, with a focus on green hydrogen, ammonia, methanol, and sail power as potential replacements for traditional bunker fuel. Companies like Windcoop, Veer Voyage, and Airseas are designing sail-powered container ships and utilizing technologies like kites and rotor sails for propulsion and fuel efficiency. Rigid sails and foldable wingsails are also being implemented on existing vessels to improve fuel efficiency, with notable success on ships like Shofu Maru and Berge Olympus. These efforts aim to achieve the industry's emission reduction targets and pave the way for a greener future in maritime shipping.