Shark went from the front of the fleet to the back and finished fourth.

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In the Mistral windsurfer class, Team GBR sailor Nick Dempsey finished fourth and Natasha Sturges was fifth in the women's fleet.

BBC: SPORT | Other Sport | Britons land sailing medals

The company had already announced an initial system reduction to its M-80 fleet in March of this year, to take place in the fourth quarter.

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