How America's Cup boats fly

How do America's Cup boats fly above the water? How do foils work and how do designers set about creating boats that fly? Cup foils explained. Watch more America's Cup videos: https://www.youtube.com/playlist?list=PL7vbQ_IdCHBsvRcHFhARRHv2-_wWCQi_S Subscribe to The World Sailing Show: https://www.youtube.com/channel/UCwG9Ah2xXDR4CmgsrzYaLCQ?sub_confirmation=1