BMW Oracle said it is examining the new design rules to ensure they do not give Alinghi an unfair advantage.

"The concern has always been about the defender having several months lead-time ahead of challengers to design and build a new boat, without anyone else knowing what the design rules were," said Tom Ehman, a spokesman for the Golden Gate Yacht Club with represents Oracle.

"When our designers can verify that we are all starting from the same point we hope to see all other issues resolved quickly as agreed recently with the challengers," he added in a statement.

The establishment of the rules will allow the five competitors who have signed up for the 33rd America's Cup - Team Origin, Team Shosholoza, Team Germany, Desafio Espanol and Team New Zealand - to start working on the new boat.

According to Ehman, Oracle want to compare the new boat design rules with "what they started out with and we continue to ask Alinghi to provide this".

According to America's Cup Management chief, Michel Hodara, the challengers are the offended ones and, so, they are the best placed to respond.