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10 Metre
Development
Class symbol
Design	Development class
Boat
Crew	8
Draft	2.2 m (7 ft 3 in)
Hull
Hull weight	12,000 kg (26,000 lb)
LOA	16.5 m (54 ft)
LWL	11 m (36 ft)
Beam	3 m (9.8 ft)
Rig
Former Olympic class
[edit on Wikidata]

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; 10 Metre boats are, on average, 16.5 meters long.

History

The 10 Metre 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 built.

Rule development

1907 Rule

Used from 1907 to 1920

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

where

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

1919 Rule

Used from 1920 to 1933

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

where

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

Events

Olympics

Event	Gold	Silver	Bronze
1912 Stockholm details	Sweden (SWE) Filip Ericsson Carl Hellström Paul Isberg Humbert Lundén Herman Nyberg Harry Rosenswärd Erik Wallerius Harald Wallin	Finland (FIN) Harry Wahl Waldemar Björkstén Jacob Björnström Bror Brenner Allan Franck Erik Lindh Juho Aarne Pekkalainen	Russia (RUS) Esper Beloselsky Ernest Brasche Karl Lindholm Nikolay Pushnitsky Aleksandr Rodionov Iosif Shomaker Philipp Strauch
1920 Antwerp 1907 rule details	Norway (NOR) Erik Herseth Gunnar Jamvold Petter Jamvold Claus Juell Sigurd Holter Ingar Nielsen Ole Sørensen	No further competitors	No further competitors
1920 Antwerp 1919 rule details	Norway (NOR) Charles Arentz Otto Falkenberg Robert Giertsen Willy Gilbert Halfdan Schjött Trygve Schjøtt Arne Sejersted	No further competitors	No further competitors

v t e Olympic sailing classes
Current classes	470 49er 49erFX Finn Formula Kite IQFoil Laser Laser Radial Nacra 17
Former classes (In order of first use)	Ton classes (0–½, ½–1, 1–2, 2–3, 3–10, 10–20, 20 & Open) 6 Metre 7 Metre 8 Metre 12 Metre 10 Metre 12 foot dinghy 18 foot dinghy 6.5 Metre 8.5 Metre 9 Metre 15 Metre Skerry cruiser 30 m Skerry cruiser 40 m French National Monotype 1924 Snowbird Star O-Jolle Firefly Swallow Dragon 5.5 Metre 12 m Sharpie Flying Dutchman Tempest Soling Tornado Windglider Division II Lechner A-390 Europe Mistral One Design Yngling RS:X Elliott 6m
Youth classes	Nacra 15 Techno 293
Former youth classes	Byte

References

Klawiński, George. "Yachts unusual: PESA". Zagle. Retrieved June 3, 2016.

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