Contribution to the Olympic Games
Not only has Andreadis competed, early on in his career at the Olympic Games, but he also had a steady involvement throughout the years in technical and executive committees which have helped shape and adjust the status of sailing events within the larger frame of Olympic competition.
- Olympic Games London 2012 - Member of the ISAF Council
- Awarded the Olympic Order of the IOC, Italy 2010
- Olympic Games Beijing (Qingdao) 2008 – ISAF Executive Committee
- Olympic Games Athens 2004 - Chairman of the ISAF Olympic Advisory Commission
- Olympic Games Sydney 2000 - ISAF Executive Committee
- Olympic Games Atlanta (Savannah)1996 – Chairman of the Sailing Committee
- Olympic Games Barcelona 1992 - Chairman of the Olympic Measurement Committee
- Olympic Games Seoul (Pusan) 1988 - Chairman of the Olympic Measurement Committee
- Olympic Games Los Angeles 1984 - Member of the Olympic Measurement Committee
- Team Leader Greek Olympic Sailing Team Moscow (Tallinn)1980
- Olympic Competitor in the International Soling Class Montreal (Kingston)1976
- Olympic Game Munich (Kiel)1972 – Official Guest of Organizing Committee
- Olympic Competitor in the International Flying Dutchman Class Mexico City (Acapulco) 1968
- Olympic Trials Competitor in the International Star Class 1959