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From the DN WEB SITE

 

The DN is the largest iceboat class in the world, so named because it was the winner of an iceboat design contest sponsored by the Detroit News in 1937. That year the newspaper opened up it's shop to 50 builders who assembled the first fleet of "Blue Streak 60" iceboats (as it was originally named).


The DN (Detroit News) iceboat 

DS-DN
Sail area: 60 sq. feet 
Length: 12 feet 
Hull width: 21 inches 
Mast length: 16 feet 
Runner plank length: 8 feet 
Number of runners: 3 (1 front steering runner, 2 side runners) 
Hull material: wood 
Typical weight: 100-150 lbs. 
Maximum speed: 60 MPH 
Typical performance: 2-4 times wind speed

 


The IDNIYRA (International DN Ice Yacht Racing Association) was incorporated as a Non-Profit Corporation in the State of Michigan in 1962 for the following stated purpose: "To promote, protect and perpetuate DN one design iceboating, to advance the art and skill of the DN ice yacht construction and sailing as well as the future development of the DN class ice yacht and the sport of ice yachting on all the hard waters of the world. "

The IDNIYRA has grown over the years to a current size of about 2000 members (1000 in North America and 1000 in Europe), representing 20 countries. A World Championship is held each year, with the site alternating between North America and Europe. There are also North American and European Championsips held each year, as well as numerous other international and local regattas.