Three-time Olympic medallist Vasilij Žbogar of Slovenia and Frenchman Pierre Le Coq are among the leading names competing at a test event for next year's World Sailing Championships in Aarhus.
Competition in all 10 Olympic classes began today, with the medal races scheduled for Saturday (August 12) and Sunday (August 13).
Although it is a test event, the competition is not taking place at the venue due to hold the World Championships next year.
Action is scheduled to be staged out of the Egå Marina, just outside the city of Aarhus, this week.
The Aarhus 2018 World Championships will be centred around the brand-new Aarhus International Sailing Centre, located within walking distance from the Danish city.
World Sailing claim the event will allow them to test key processes one year in advance of the Championships.
This includes race management, the field of play, formats, equipment, technology and the overall management structure.
It also allows sailors to acclimatise with the local waters, race courses and sailing conditions, according to World Sailing.
More than 370 sailors from 54 nations are participating at the test event, including the likes of Žbogar and Le Coq.
Žbogar won the laser Olympic bronze medal at Athens 2004 before he managed to go one better in the same class in Beijing four years later by claiming silver.
The 41-year-old Slovenian clinched another silver medal at Rio 2016 in the Finn class.
Scheduled to take place from July 30 to August 12, Aarhus 2018 is the first and most significant qualification event for Tokyo 2020, with 40 per cent of the nation quota places available in the 10 Olympic events.
It is also due to see men's and women's kiteboarding introduced into the World Championships for the first time.