VALENCIA, Spain — Race 1 of the America's Cup was postponed again Wednesday, this time because of big waves on the Mediterranean Sea.

Racing was called off just before noon Wednesday. The big multihulls, USA and Alinghi 5, didn't even leave the docks.

Race organizers will try again on Friday to get in the first race of the nautical grudge match between American challenger BMW Oracle Racing and two-time defending champion Alinghi of Switzerland.

Alinghi and BMW Oracle Racing are trying to settle their differences on the water after the sailing classic was disrupted by a bitter court fight that lasted 2½ years.

The weather hasn't cooperated, though.

On Monday, the boats idled for four hours in light, unsteady wind at the starting line of the vast race course, which encompasses 400 square miles, before race officials called it off.

On Wednesday, officials said waves between 4 and 6 feet whipped up by overnight winds made it unsafe to send out the big boats. Waves that size, combined with the tremendous loads the boats' riggings are under, could lead to a demolition derby.

Principal race officer Harold Bennett said that although the wind was expected to drop off during the afternoon, the waves weren't.

Alinghi skipper Brad Butterworth said late last week that insurance liabilities will force racing to be called off if the wind exceeds 15 knots or waves more than 3 feet.

The second postponement again illustrated the difficulty of trying to sail the America's Cup in the Northern Hemisphere winter. That is the byproduct of a convoluted legal fight between Alinghi boss Ernesto Bertarelli and Larry Ellison, the CEO of Oracle Corp.

USA and Alinghi 5 are the fastest, most technologically advanced boats ever built for the America's Cup. At 90 feet long and 90 feet wide, they dwarf their crews and are capable of sailing at up to three times the speed of the wind.

So far, though, no one's been able to see them in action against each other.