The annual Kiev Racing Yacht Club Cup is a hard-fought multistage regatta that draws some of Ukraine’s best sailors.

This summer eight teams, each a mix of professional and serious amateur sailors, battled for the Cup.

During a rapid move in which speed may have been a factor, a crewmember on one boat displays an amazing ability to stay aboard — even while upside-down with his head fully submerged.

This is one you have to see to believe.