The Extreme Sailing Series (ESS) (formerly the iShares Cup) was an annual global racing series, organised by OC Sport and since 2016 raced in GC32 catamarans. Before 2016 Extreme 40’s were used. According to ESS, the GC32 is faster than the Extreme 40 and considerably more challenging for the crew.
The series started in 2007 with its main attraction being the stadium racing which puts the race course inside a stadium environment for the ease of spectators’ viewing.
Many of the sailors taking part in the series are around-the-world yachtsmen, Olympic medallists, America’s Cup sailors, World and European champions and even world record holders.
The series was terminated in 2019 after the event became financially nonviable and the owners, OC Sports were unable to secure a management-buy-out