Ainslie prepares for GB America's Cup bid

Four-time Olympic champion Sir Ben Ainslie and his Land Rover team are bidding to be the first British team to win the America's Cup in 165 years.

Ainslie was part of Oracle Team USA, who won the last edition of sailing's famous trophy in 2013.

In 2017, he hopes to lead a British team to victory when the series concludes in Bermuda.

BBC South Today went behind the scenes of the Land Rover's BAR base in Portsmouth to see the meticulous preparation.

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