The International Six Metre class is a class of classic racing yachts. Sixes are a construction class, meaning that the boats are not identical but are all designed to meet specific measurement formula, in this case International rule. At their heyday, Sixes were the most important international yacht racing class, and they are still raced around the world. "Six metre" in class name does not, somewhat confusingly, refer to length of the boat, but product of the formula; 6mR boats are, on average, 10–11 metres long.

Sailing/Yachting is an Olympic sport starting from the Games of the 1st Olympiad. With the exception of 1904 and the canceled 1916 Summer Olympics, sailing has always been included on the Olympic schedule. The Sailing program of 1912 consisted of a total of four sailing classes (disciplines). For each class two races were scheduled from 19 July 1912 to 22 July 1912 off the coast of Nynäshamn at the Baltic Sea.