Ryan Seaton and Matt McGovern have finished in ninth place in the Men's 49er Medal Race, which has left them ranked in 10th overall.
The Irish duo finished in a time of 21:29.
They had been sixth after the first two marks of the race but slipped back to 10th by the third, before taking ninth in the race.
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New Zealand pair Blair Tuke and Peter Burling won the gold medal.
Silver went to Australia and bronze to Germany.