Paralympic sailors Alexandra Rickham and Niki Birrell secured silver in the Skud class, as did John Robertson, Hannah Stodel and Steve Thomas in the Sonars.

But the week-long regatta culminates in nine Olympic medal races on Satuday, giving Britain the chance of 10 more medals, including a possible gold, silver and bronze in the fiercely contested Finn class.

Ben Ainslie, who has not been beaten at any Finn regatta since May 2004, lies second with his younger rival Giles Scott leading by 16 points going into the final race, which counts for double points.

Medal chances also exist in the 470 men’s, 49er and laser classes, though Beijing gold medallists Iain Percy and Andrew Simpson are are out of contention in the Star class and Lucy MacGregor and her women's match racing team were also ruled out after being beaten by American skipper Anna Tunnicliffe in the quarter finals on Friday.

Penny Clark and Katrina Hughes are the form 470 Women's crew going into Saturday's race after posting two seconds yesterday but Alison Young failed to qualify for the Laser Radial medal race, finishing just out of contention in 11th place.