Britain's Bryony Shaw won her second successive World Cup crown with gold in the women's RS:X in Abu Dhabi.
Hannah Mills and Saskia Clark, the 2012 Olympic silver medallists, were victorious in the women's 470.
The British pair beat Lara Vadlau and Jolanta Ogar of Austria into second, with Japan's Ai Kondo Yoshida and Miho Yoshioka claiming the bronze medal.
European champion Shaw finished ahead of Italy's Flavia Tartaglini and Brazil's Patricia Freitas.
Meanwhile, Britain's Oliver Bridge won gold to retain his open kiteboarding title, and Tom Squires won bronze in the men's RS:X.
That event was won by Ivan Pastor Lafuente of Spain, with Ricardo Santos of Brazil claiming silver.
Bridge finished ahead of Spaniards Florian Trittel and Alejandro Climent Hernandez.
Qualification for the ISAF Sailing World Cup final is contested across five regattas for all ten Olympic sailing events held throughout the year.