And there were third places for Bryony Shaw in the RS:X windsurfing and Helena Lucas in the 2.4mR Paralympic class.

BBC: Britain secures five-medal haul in World Cup regatta

Dempsey won bronze at the 2004 Athens Olympics in the RS:X class, and silver in Tuesday's Olympic windsurfing final in Weymouth.

CNN: Olympic 2012: Sailing federation hit by legal row

To launch a legal action in the middle of the Olympics is not only damaging to RS:X but also to the sailing world.

CNN: Olympic 2012: Sailing federation hit by legal row

The engine will be based on the Porsche RS Spyder racing engine that demonstrated its impressive performance and efficiency through multiple Michelin Green X Challenge victories in the American Le Mans Series, the Le Mans Series and the 24 Hours of Le Mans.

ENGADGET: Porsche opens 918 Spyder plug-in supercar pre-orders, $845,000 gets you a ticket to ride