Seguin had trailed Britain's defending champion Helena Lucus heading into this afternoon's medal race.

Lucas, however, moved back through the fleet after misjudging the wind.

Seguin sailed a comfortable race to finish fifth and take the gold medal with 30 points.

Australia's Matthew Bugg won the finale to rub salt on British wounds and overhaul Lucas for second.

He scored 34 points overall in the lowest wins format - with Lucas on 40.

The sport will miss the next edition of the Paralympic Games in Tokyo - and will now have to mount a campaign to be reinstated in time for 2024. 

But a regatta this week, in which only five countries gained podium position did little to show the sport's universality. 

Australia very nearly won all three events after claiming gold medals with a day to spare in the opening two fleets today.

Colin Harrison, Russell Boaden and Jonathan Harris sailed a comfortable medal race to finish 10th in the three-person sonar keelboat finale as United States crossed the line first.

The Australian trio still finished comfortably ahead on 26 points to win by 18 over their US rivals.

Canada took the bronze medal with 51 points.

Daniel Fitzgibbon and Liesl Tesch were even more dominant in the two-person category.

They came second in the final race of the two-person keelboat class to post just 12 points for the regatta. 

Canada took a distant silver with 34 points while bronze went to Britain with 36.

Fitzgibbon now boasts a Paralympic haul of two gold medals and one silver in the SKUD18, a run that started at Beijing 2008 when he sailed with Rachael Cox.

Partner Tesch won two silvers and a bronze in wheelchair basketball before teaming up with Fitzgibbon and winning back to back titles.