Here's what a 1 second margin looks like - Emirates Team NZ heads off Artemis in the second day and penultimate race of the Challenger Final

© Richard Gladwell / Sail-World.com America's Cup: The Agony and Ecstacy - when margins are split seconds or many minutes
“A little bit of boat speed makes you famous” once said an America's Cup skipper. The unsaid flip side is that a lack of it, will relegate you to obscurity.