The Finndinghy is the men's single-handed, cat-riggedOlympic class for sailing. It was designed by Swedish canoe designer, Rickard Sarby, in 1949 for the 1952 Summer Olympics in Helsinki. Since the 1952 debut of the boat, the design has been in every summer Olympics, making it one of the most prolific Olympic sailboats as it is the longest serving dinghy in the Olympic Regatta. It currently fills the slot for the Heavyweight Dinghy at the Olympic games. It has been contended that the Finn is the most physical and tactical singlehander sailboat in the world.
Although the Finn hull has changed little since 1949, there have been developments to the rig. The original spars were made of wood until the late 60’s and early 70’s when there was a slow change to aluminum masts. Aluminum is significantly more flexible and gives more control over sail shape. It became commonplace after the 1972 Summer Olympics in Munich when they were first supplied to Olympic sailors. Recently, carbon fiber masts have become common place in competitive Finn fleets. The sails too have gone through revolution and are now commonly made of Kevlar. The class rules are overseen by the International Finn Association.