London 2012 Olympics organisers said that construction work at the sailing venue had been completed, three and a half years before the Games start.

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The existing sailing centre in Weymouth, in the South West, has undergone a £15 million upgrade, with a new 250-metre slipway, boat parking and hoist facilities.

The Olympic Delivery Authority (ODA) said the work had been completed on time and within budget, a welcome boost as other projects such as the athletes village have been hit by funding problems caused by the economic slowdown.

Ten Olympic sailing events will be held at the Weymouth site which will also stage the Paralympic sailing regatta.

"To have completed the first Olympic and Paralympic venue over three years before the start of the Games is a tremendous achievement and demonstrates the excellent progress we are making on London 2012," Olympic Minister Tessa Jowell said.