10 Metre (keelboat)
| Current Specifications | |
|---|---|
|
120x50px 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 Seven 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; 7mR boats are, on average, 16.5 meters long.
Contents
History
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
1907 Rule
Used from 1907–1920
- <math>
7.000 \mbox{ metres} = \frac{L + B + 1/3G +3d + 1/3\sqrt{S} - F}{2} </math> where
- <math>L</math> = waterline length (LWL)
- <math>B</math> = beam
- <math>G</math> = chain girth
- <math>d</math> = difference between girth and chain
- <math>S</math> = sail area
- <math>F</math> = freeboard
1919 Rule
Used from 1920–1933
- <math>
7.000 \mbox{ metres} = \frac{L + 0.25G +2d + \sqrt{S} - F}{2.5} </math> where
- <math>L</math> = waterline length (LWL)
- <math>G</math> = chain girth
- <math>d</math> = difference between girth and chain
- <math>S</math> = sail area
- <math>F</math> = freeboard
Olympic results
1912 (1907 rule)
| Rank | Country | Helmsman | Crew |
| 1 | [[File:Template:Country flag IOC alias SWE|22x20px|border|alt=|link=|Template:Country IOC alias SWE]] [[Template:Country IOC alias SWE at the 1912 Summer Olympics|Template:Country IOC alias SWE]] (SWE) | HELLSTRÖM, Carl Ludwig | WALLERIUS, Eric G. WALLERIUS, Harald LUNDEN, Humbert NYBERG, Herman ROSENWÄRD, Harry ISBERG, Paul ERICSSON, Filip |
| 2 | [[File:Template:Country flag IOC alias FIN|22x20px|border|alt=|link=|Template:Country IOC alias FIN]] [[Template:Country IOC alias FIN at the 1912 Summer Olympics|Template:Country IOC alias FIN]] (FIN) | WAHL, Harry | BJÖRKSTEN, Waldemar BJÖRNSTRÖM, Jacob Karl BRENNER, Bror Benedikt FRANCK, Allan LINDH, Erik PEKKALAINEN, Adolf Aarne |
| 3 | [[File:Template:Country flag IOC alias RUS|22x20px|border|alt=|link=|Template:Country IOC alias RUS]] [[Template:Country IOC alias RUS at the 1912 Summer Olympics|Template:Country IOC alias RUS]] (RUS) | BELOSELSKY, Esper | BRASCHE, Ernest PUSCHNITSKY, Nikolaï RODIONOV, Aleksandr SCHOMAKER, Iossif STRAUCH, Filip LINDBLOM, Karl |
| 4 | [[File:Template:Country flag IOC alias SWE|22x20px|border|alt=|link=|Template:Country IOC alias SWE]] [[Template:Country IOC alias SWE at the 1912 Summer Olympics|Template:Country IOC alias SWE]] (SWE) | LINDEN, Einar | LINDHOLM, Karl WALLER, Erik BOTHEN, Björn BOTHEN, Bertil FORSBERG, Wilhelm |
1920 (1907 rule)
Only one boat at the starting line
| Rank | Country | Helmsman | Crew |
| 1 | [[File:Template:Country flag IOC alias NOR|22x20px|border|alt=|link=|Template:Country IOC alias NOR]] [[Template:Country IOC alias NOR at the 1920 Summer Olympics|Template:Country IOC alias NOR]] (NOR) | HERSETH, Erik Johan | HOLTER, Sigurd NIELSEN, Ingar JAMVOLD, Petter JAMVOLD, Gunnar JUELL, Claus |
1920 (1919 rule)
Only one boat at the starting line
| Rank | Country | Helmsman | Crew |
| 1 | [[File:Template:Country flag IOC alias NOR|22x20px|border|alt=|link=|Template:Country IOC alias NOR]] [[Template:Country IOC alias NOR at the 1920 Summer Olympics|Template:Country IOC alias NOR]] (NOR) | ARENTZ, Charles Archer | GILBERT, Willy GJERTSEN, Robert SEJERSTED, Arne SCHJÖTT, Halfdan SCHJÖTT, Trygve FALKENBERG, Otto Gabriel Grubbe |
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