Today the 33rd staging of the America's Cup Regatta – the oldest active trophy in international sport – gets underway in waters off Valencia, with the holders, the Société Nautique de Genève, taking on the Golden Gate Yacht Club. For the first time ever the entire event will be shown live online and you can access the stream via the America's Cup channel here on YouTube.

Both 90-foot boats are something to behold: the Alinghi 5 catamaran boasting a mast as tall as a 17-story building; the trimaran BMW Oracle USA 17 sporting a rigid wing sail based on aerospace technology. To date, the competition has been overwhelmed by legal issues, the teams apparently having spent more time in closed courtrooms than on the open water, but now the talking is over and the racing can commence.

The America's Cup is decided over three races, the first and third being 40 nautical miles and the second 39. Once the wind starts to blow, the sight of both contenders under full sail should be stunning, so stay tuned YouTube to catch the action in real time.

Jamie Dolling, Community Manager, YouTube UK, recently watched "Inside the Wing."