From the following ACEA article
Five of the best youth sailing teams in the world have qualified for the Red Bull Youth America’s Cup following a grueling two-week Selection Series in San Francisco. The 12 crews, from 11 countries, were pushed to the limit as they fought for the right to compete in September’s races.
National crews from Australia, Germany, New Zealand, Portugal and Switzerland, made the cut to advance to the Red Bull Youth America’s Cup where they will meet five crews supported by current America’s Cup teams.
Double Olympic Gold medalists Roman Hagara and Hans-Peter Steinacher, the Sports Directors for the Red Bull Youth America’s Cup, made the selections after closely monitoring the teams on and off the water during the two back-to-back selection weeks. With the high talent level and extreme motivation of the crews, there were hard choices to make.
read more here