Austria's Roman Hagara and Hans Peter Steinacher defended their Olympic Tornado title in Athens on Saturday.
Hagara and Steinacher won gold in the Tornado class
The pair won the 11th and final race to easily beat Americans John Lovell and Charlie Ogeltree into silver.
Argentines Santiago Lange and Carlos Espinola finished in bronze, while Britons Mark Bulkeley and Leigh McMillan were 13th overall.
In the Star class, Brazil, Canada and France took the medals with Britain's Iain Percy and Steve Mitchell sixth.
The British former world champions finished Saturday's last race in fourth place.
Brazil's Torben Grael and Marcelo Ferreira secured gold with one race to spare ahead of Ross Macdonald and Mike Wolfs.
The Canadians placed second in the final race to pip French pair Xavier Rohart and Pascal Rambeau by three points.