In August 2023, tests of the prototype of the Legion 360 yacht took place, the design of which we developed together with Tymon Butkiewicz as part of the work co-financed by PARP (voucher for innovation) at the scientific unit (ASP Wrocław). Our small team, which I had the pleasure of being the project manager, developed a new, comfortable line of sailing yachts in two sizes (10.5 m and 12.45 m). The project of a smaller unit was implemented in an inland version dedicated to sailing on Masurian lakes. The first piece went to a private shipowner. The next two join the Vip yacht fleet from Giżycko, thanks to which we were able to implement the project as a research team at our university. We would like to thank the investor for his trust and good opinions about the yacht after tests on the water. We are waiting for the possibility of building a marine unit, which we have also prepared...