Lloyd’s Register and Damen Shipyards are partnering with Belgian shipowner CMB.TECH to develop innovative hydrogen-fuelled tugboats. CMB.TECH plans to introduce up to eight azimuth stern drive (ASD) tugboats equipped with MAN dual-fuel hydrogen-diesel engines to help ports decarbonise their ship operations. Leveraging their experience with Hydrotug 1, the first hydrogen-powered tugboat, CMB.TECH focuses on standardizing designs and engineering for these new vessels. Compressed hydrogen storage, advanced safety measures, and efficient monitoring systems are key features of the new tug designs. Hydrotug 1, operating in Antwerp since 2023, paved the way for these advancements and compliance with environmental standards. Lessons learned from operating Hydrotug 1, along with experiences from hydrogen-powered ferries and crew transfer vessels, are being integrated into the new ASD tug designs. The project also includes aftertreatment systems for diesel combustion, energy-efficient LED lighting, and crew comfort features. The collaboration aims to boost the commercial production of hydrogen-fuelled tugboats, potentially impacting markets in Australia and northern Europe. By focusing on cost reduction and efficiency, the project plans to construct up to eight tugboats with advanced propulsion systems and compliance with environmental regulations. The initiative not only emphasizes sustainability and emissions reduction but also highlights the importance of standardizing hydrogen bunkering infrastructure in ports, ensuring the success and scalability of hydrogen-powered marine operations.