Compared to the 2012 Games, there have been several changes to competition events.
At the beginning of a race, the fleet of boats such as these 470 class two-person dinghies, is usually closely spaced.
No major changes have been made to the 2016 schedule, meaning the same 10 classes will be competing for medals for the 2020 Olympic sailing competition.
Both the helm and crew trapeze from these wings at the same time to increase leverage further still.
Germany is behind the United States by just two.
Using only wind power, each racer tries to sail faster around a racecourse that is prescribed by buoys and has separate starting and finishing lines.