The Badboot (2011) is an evolution in the field of primordial wellness. A primitive "boat on an open fire" principle has been developed into the first electrically propelled hottub with an underwater wood stove! The bath area is modeled on an existing rowboat and made from polyurethane foam for good insulation and ensures rapid heating up. The cover captures rainwater, the reed filter with UV light purifies the water so that it can be used repeatedly. The hottub can also be used separately from the boat, but in the boat and sailing is an attraction with a unique wellness experience.