Her opponent in the final was France's Pauline Courtois who came through a tough semi final against Singapore's Jovina Choo, who had been looking strong in the round-robins.
Breault proved too strong for her French opponent in the final winning the match up 3-1 to be crowned Womens division champion. She said, "Well, the French team was very good in the pre-start. We started behind them and then we caught them.
"When it happens the races are very aggressive, we were making sure that we didn't get tired. We enjoyed the racing a lot and we worked very hard to win."
To complete the division, Choo beat Senfft 2-0 to take third place in her final match.
In the Open division, Australia's Evan Walker and Russia's Vladimir Lypavskiy have been looking the stand out performers with near perfect records throughout the regatta. The only defeats had been inflicted on one another, so it was no surprise to see the two battle it out in the final.
Walker came through his semi final against USA's Russel Silvestri 3-0, and not to be outdone, Lypavskiy also took a 3-0 win in his semi final against France's Pierre Rhimbault.
With both taking great records into the final, something had to give between the two. After two matches it was almost predictably all square at 1-1. Spurred on by moving ahead in the third match, Lypavskiy took his confidence into the fourth and finally got the break that proved the difference. Lypavskiy had taken the final 3-1 to be crowned Open division champion.
Lypavskiy said, "This win means so much to me as the rank of the event is very high and I'm very proud that it takes place in Vladivostok, Russia, in my home town. We were a bit under pressure as we felt that we are expected to win. We were so happy to win."
The Russian's semi final opponent Rhimbault took the third place match up with a 2-1 win over Silvestri to round up the competition.
As well as taking the titles of Nations Cup Champions, Breault and Lypavskiy get an invitation to defend their titles in the 2017 Grand Final.
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