In the old brick shed of a former schnapps factory, the inventor couple Stefanie and Lars Holger Engelhard have designed their tugboat and built a prototype. On 7 August 2021, the christening of this prototype of an electrically driven catamaran took place in the presence of Dr. Bernd Buchholz, the Minister of Economic Affairs of Schleswig-Holstein. Starting in spring 2023, the ZeroOne could chauffeur excursionists from Schleswig’s city harbour across the Schlei River to the UNESCO World Heritage Site of the Viking Museum in Haithabu, or so the plan goes. Another two years later, the hybrid boat designed for up to twelve people could then be travelling autonomously, i.e. without a driver.