Reigning champion Maria Erdi of Hungary and Germany’s Hannah Anderssohn, last year’s runner-up, were also in contention but came 13^th and 19^th respectively.

"I feel super happy," said Fraschini.

"I had a good start but then a bad upwind, so I had to just focus on recovering.

"I kept gaining and then I crossed the line, it was like a dream come true."

The lowly finishes of Erdi and Anderssohn allowed Croatia’s Sandra Luli and Italy’s Carolina Albano to knock them off the podium.

Albano won the final race but had to settle for bronze on countback after Luli finished tied with her on 45 points thanks to a sixth-place finish. 

In the boys’ laser radial, Australia’s Finnian Alexander secured gold with a 20^th-place finish having held a lead of 27 points going into the final day.

Italy’s Paolo Giargia crossed the line in 11^th for silver, while the United States’ Carrson Pearce took the bronze medal with a ninth-place finish.

Great Britain's Crispin Beaumont and Tom Darling won top honours in the boys' 29er following a final race duel with France's Gwendal Nael and Lilian Mercier.

Starting the day four points behind their French rivals, Beaumont and Darling’s third-place finish was enough for gold with Nael and Mercier coming 10^th.

Australia's John Cooley and Simon Hoffman crossed the line in fourth to complete the podium.

Compatriots Natasha Bryant and Annie Wilmot knew they had a gold medal in the girls’ 29er and it was down to Poland’s Aleksandra Melzacka and Maja Micinska and sisters Greta and Kate Stewart of New Zealand for silver and bronze.

The siblings had to finish with two boats between them and Melzacka and Micinska to move up into second place, but the Poles crossed the line one place behind their rivals in seventh.

Poland's Julia Szmit and Hanna Dzik successfully defended their girls' 420 title having led the way going into the final race.

Italy’s Alexandra Stalder and Silvia Speri claimed silver after crossing in sixth and finishing on 38 points.

Although France's Violette Dorange and Camille Orion finished above the Italians in fourth, they could not overhaul the points deficit and had to settle for the bronze medal.

Israel’s Ido Bilik and Ofek Shalgi and Argentina’s Fausto Peralta and Martin Arroyo Verdi were fighting for silver in the boys' 420 as the US’s Wiley Rogers and Jack Parkin had already secured the gold yesterday.

It was Bilik and Shalgi who took the silver in style with a bullet in the final race, while Peralta and Verdi had to settle for bronze.

Israel's Yoav Omer and Britain's Emma Wilson had already confirmed gold before the final race of the respective boys and girls RS:X events, so left the rest of the potential medallists to fight it out for podium spots.

The Netherlands’ Sil Hoekstra knew that if he finished near the top of the fleet he would have a boys’ RS:X silver medal and he duly obliged, finishing fifth to secure second spot.

China's Chen Hao Chen took a bullet to ensure third spot ahead of Aruba's Mack van den Eerenbeemt, who could only manage an 11^th-place finish.

Israel's Katy Spychakov took girls’ RS:X, silver with a third-place finish, while Peru's Maria Belen Bazo was handed the bronze medal following the disqualification of China’s Yue Tan.

With France’s Tim Mourniac and Charles Dorange comfortably winning gold with a race to spare in the Nacra 15, it was down to representatives of Italy, US and Belgium to battle for the podium.

The US’s Romain Screve and Ian Brill finished 14th but discarded that result to leave them on 55 points - the same tally as that of Belgium’s Henri Demesmaeker and Isaura Maenhaut after their fifth-place finish.

Both sitting on the same overall score, it was Screve and Brill who took silver on countback.

Italy’s Gianluigi Ugolini and Maria Giubilei finished 12^th, dropping them from second overnight to out of the medals entirely.

Italy won the Nations Trophy, an award that recognises the best-performing nation overall, for the third time and collected the award during the Closing Ceremony at the Auckland University of Technology City campus.

They finished six points ahead of Britain in second.

A total of 389 sailors from 65 nations attended the Closing Ceremony, where Rio 2016 Olympic gold medallist Peter Burling and Rio 2016 bronze medallist Sam Meech, both of New Zealand, were among the speakers.