Energy Observer 2 is a new generation of the autonomous laboratory vessel capable of producing its own hydrogen through surplus renewable energy.^[1] It is intended to be the worlds first cargo ship powered by liquid Hydrogen as fuel.^[2] The vessel will have a range of up to 4,000 nautical miles with a commercial speed of 12kts, a 4 MW electric propulsion system, and 1,000m3 liquid hydrogen tanks.^[3] The 120m-long design ship will be zero-emission capable, with a high level of autonomy and a significant cargo capacity.^[4] With liquid hydrogen storage and associated technologies such as fuel cells and liquefiers now established and widely available, it has been intended to examine new technical issues such as cryogenic temperature management and big tank integration.^[5] The ship was developed to answer the requirement to update existing fleets of multipurpose cargo ships with a deadweight of 5,000 tonnes that travel on intracontinental and coastal routes and can call at small ports without requiring extensive logistics.^[6] The key characteristics of Energy Observer 2 are its 394-foot length, 72-foot beam, and 18-foot draught. They anticipate a 5,000 dwt vessel with a capacity of 240 TEU and 480 linear metres for trucks, cars, and containers.^[4]