Two Australian companies, AMSL Aero and Stralis Aircraft, have recently registered a family of liquid hydrogen tanks, known as Dewar vessels, in partnership with BOC Australia. These tanks are designed to enable zero-emission flights across Australia by facilitating the transportation, storage, and refuelling of liquid hydrogen for aircraft. BOC Australia, a Linde company, spearheaded the registration process, setting the stage for the country's first liquid hydrogen flight test programs. The Dewar vessels, functioning as oversized thermos flasks, are essential for maintaining the ultra-low temperatures required to store liquid hydrogen. AMSL Aero and Stralis Aircraft plan to utilize the 30 kg capacity Dewar vessels to transport liquid hydrogen from production facilities to their hydrogen-powered aircraft. Simon Coburn from AMSL Aero highlighted the growing global acceptance of liquid hydrogen as an aviation fuel and expressed delight in contributing to Australia's liquid hydrogen supply chain alongside BOC and Stralis. Stuart Johnstone, CTO of Stralis Aircraft, emphasized the significance of this milestone in advancing hydrogen-electric aircraft in Australia and fostering a liquid hydrogen supply chain for future commercial flights. Chris Dolman, from BOC Australia, noted the company's longstanding experience with hydrogen in Australia and the excitement around supporting innovative applications like these. This development marks a positive step towards sustainable aviation in Australia through the utilization of liquid hydrogen.