The clock is ticking down to the 34th America's Cup, and two teams have splashed their AC72s thus far.

Emirates Team NZ hit the water in their new AC72 last month. Their fourth day of training on Aug. 29 saw speeds in the 30-knot range. Just check out the chase boats trying to keep up!

Oracle Team USA followed suit and launched it's 72-footer on the waters of San Francisco Bay on Aug. 31. But the training run was cut short after what the team called a daggerboard failure. Here's a look:

Click here to see photos from Oracle Team USA and Emirates Team NZ.