A yacht of class SB20 is a sports keel yacht, designed for a crew of 3-4 people, equipped with a gennaker. This class is very widespread around the world, as the SB20 racing association calendar for the 2019 season has more than 15 international competitions. Such popularity is due to the fact that the SB20 was originally designed as a racing class, due to its design, however, it does not impose serious requirements on the athlete's physical form.