AC72 wing sail 1 & 2 for 2013 America’s Cup in San Francisco Wings 1 & 2 side by side. Artemis AC72 Artemis Racing has put wing 2 in the boat recently and will be sailing with it soon. Their AC72 design team has made big changes from wing 1: The new wing looks to have only 2 elements (meaning only 1 slot between elements) and the flaps are much wider. In “tech-speak” this means the ratio of the chords of the 2 elements has changed dramatically. (Look here for Wikipedia’s discussion of chords in wings.) The AC72 design battle continues, in the build up to the 2013 America’s Cup in San Francisco!