10 Metre (keelboat)

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Current Specifications
Class Symbol
Crew 8
LOA 16.5 m (54 ft)
LWL 11 m (36 ft)
Beam 3 m (9.8 ft)
Draft 2.2 m (7 ft 3 in)
Hull weight 12,000 kg (26,000 lb)
Infobox last updated: 14-APR-2010
Former Olympic Class

The International Ten Metre Class is 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, Metre Classes were the most important group of international yacht racing classes, and they are still actively raced around the world. "Ten" in class name does not, somewhat confusingly, refer to length of the boat, but product of the formula; 10mR boats are, on average, 16.5 meters long.


The 10mR was used as an Olympic Class during the 1912 and 1920 Olympics. The International Rule was set up in 1907 to replace earlier, simpler handicap system which were often local or at best, national, and often also fairly simple, producing extreme boats which were fast but lightly constructed and impractical. The rule changes several times in history. About 20 boats were ever build.

Rule development[edit]

1907 Rule[edit]

Used from 1907–1920

10 Metre Traditional.jpg

10.000 \mbox{ metres} = \frac{L + B + 1/3G +3d + 1/3\sqrt{S} - F}{2}


  • L = waterline length (LWL)
  • B = beam
  • G = chain girth
  • d = difference between girth and chain
  • S = sail area
  • F = freeboard

1919 Rule[edit]

Used from 1920–1933

10 Metre Stormvogel.jpg

10.000 \mbox{ metres} = \frac{L + 0.25G +2d + \sqrt{S} - F}{2.5}


  • L = waterline length (LWL)
  • G = chain girth
  • d = difference between girth and chain
  • S = sail area
  • F = freeboard

Olympic results[edit]

Event Gold Silver Bronze

 Sweden (SWE)
Filip Ericsson
Carl Hellström
Paul Isberg
Humbert Lundén
Herman Nyberg
Harry Rosenswärd
Erik Wallerius
Harald Wallinubé
 Finland (FIN)
Harry Wahl
Waldemar Björkstén
Jacob Björnström
Bror Brenner
Allan Franck
Erik Lindh
Adolf Pekkalainen
 Russia (RUS)
Esper Belosselsky-Belozersky
Ernest Brasche
Karl Lindholm
Nikolaï Puschnitsky
Aleksandr Rodionov
Iossif Schomaker
Philip Strauch

1907 rule
 Norway (NOR)
Erik Herseth
Gunnar Jamvold
Petter Jamvold
Claus Juell
Sigurd Holter
Ingar Nielsen
Ole Sørensen
No further competitors No further competitors

1919 rule
 Norway (NOR)
Charles Arentz
Otto Falkenberg
Robert Giertsen
Willy Gilbert
Halfdan Schjött
Trygve Schjøtt
Arne Sejersted
No further competitors No further competitors