America's Cup: Big cats at play in San Francisco Bay - Video

Emirates Team New Zealand practice and testing with the AC72, NZL5 in San Francisco. 5/6/2013

Outstanding high quality eight minute video from John Navas, shot in San Francisco of Emirates Team New Zealand and Oracle Team USA training.

Contains a lot of close up video of the AC72's sailing and foiling at speed.

Absolutely must see on the biggest screen you can find.

Shows tacks and gybes by both boats, plus plenty of straight line foiling - you be the performance analyst!