Offshore Supply Vessel Coastal Liberty has set sail with a groundbreaking approach to sustainability by adopting green hydrogen as its primary energy source. The vessel, aiming to minimize its environmental footprint and lead the energy transition in the maritime sector, has been equipped with a sophisticated hydrogen-electric power system developed by eCap Marine. This innovative system includes fuel cells, batteries, safety equipment, and advanced power management solutions, allowing the vessel to operate without emissions. Local production of green hydrogen through offshore wind power further highlights the commitment to sustainable practices. The hydrogen system, certified by DNV, is scalable and can be adapted for larger commercial ships and inland vessels. The ease of use and safety of the system, along with operational benefits such as reduced vibrations and improved propulsion, signal a significant advancement in maritime technology. The project signifies a positive step towards a greener future, with eCap Marine emphasizing the long-term benefits for both customers and society. The Coastal Liberty's transformation into a hydrogen-powered vessel showcases a remarkable achievement in the maritime industry's transition towards sustainable and emission-free operations.