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2.4 Metre (keelboat)
Encyclopedia
The International 2.4mR is a one-person keelboat
. The class is a development class governed by the 2.4mR rule. The rule is controlled by the International Sailing Federation
(ISAF) since it is one of few classes designated as an International class. The class rule is closely related to the 12mR rule that was used in the America's Cup and the shape often resembles the larger sister.
While there is a small but active group of amateur designer/builders around the world, around 90% of boats are the commercially-produced Norlin Mark III designed by yacht designer Peter Norlin of Sweden
. Recently, new designs have come into production, such as the Stradivari III and the Proton.
The boat is primarily used for racing and the class holds highly competitive national events in many countries. World and European championships (only when the World Championship is not in Europe) are attracting around 100 boats every year. In some countries however it is looked on as a Paralympic class only and consequently the level of racing are lower in these countries.
The 2.4mR is ideal for handicap integrated sailing
since the sailor does not move in the boat, and everything is adjustable from right in front of the sailor. Both hand-steering and foot-steering are possible. The boat's ability in integrated sailing has been proven on the result lists of several World Championships. In 2002 and 2005 there were handicapped World Champions. The boat is sailed without a spinnaker
, but with a whisker-pole for the jib
.
, people in the Newport, RI area started sailing boats called Mini-12s named for the 12-Meter Yachts used in the America's Cup. As the class developed, word of it spread to Sweden, home of yacht designer Peter Norlin. Norlin tweaked the design, and along with other naval architects he created the 2.4 meter yacht class. Although the 2.4mR is a construction class, Peter Norlin is in practice the totally dominating designer, and the class is therefore often mistaken as a one design class. In addition to all the sailing aspects of the boat, Norlin has worked the design to incorporate features for the physically disabled to use the boat.
Where (all measurements in mm)
World Championship
and since 2004 the 2.4 Metre has been used as equipment.
Keelboat
Keelboat has two distinct meanings related to two different types of boats: one a riverine cargo-capable working boat, and the other a classification for small- to mid-sized recreational sailing yachts.-Historical keel-boats:...
. The class is a development class governed by the 2.4mR rule. The rule is controlled by the International Sailing Federation
International Sailing Federation
The International Sailing Federation is recognised by the International Olympic Committee as the world governing body for the sport of sailing....
(ISAF) since it is one of few classes designated as an International class. The class rule is closely related to the 12mR rule that was used in the America's Cup and the shape often resembles the larger sister.
While there is a small but active group of amateur designer/builders around the world, around 90% of boats are the commercially-produced Norlin Mark III designed by yacht designer Peter Norlin of Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....
. Recently, new designs have come into production, such as the Stradivari III and the Proton.
The boat is primarily used for racing and the class holds highly competitive national events in many countries. World and European championships (only when the World Championship is not in Europe) are attracting around 100 boats every year. In some countries however it is looked on as a Paralympic class only and consequently the level of racing are lower in these countries.
The 2.4mR is ideal for handicap integrated sailing
Sailing
Sailing is the propulsion of a vehicle and the control of its movement with large foils called sails. By changing the rigging, rudder, and sometimes the keel or centre board, a sailor manages the force of the wind on the sails in order to move the boat relative to its surrounding medium and...
since the sailor does not move in the boat, and everything is adjustable from right in front of the sailor. Both hand-steering and foot-steering are possible. The boat's ability in integrated sailing has been proven on the result lists of several World Championships. In 2002 and 2005 there were handicapped World Champions. The boat is sailed without a spinnaker
Spinnaker
A spinnaker is a special type of sail that is designed specifically for sailing off the wind from a reaching course to a downwind, i.e. with the wind 90°–180° off the bow. The spinnaker fills with wind and balloons out in front of the boat when it is deployed, called flying. It is constructed of...
, but with a whisker-pole for the jib
Jib
A jib is a triangular staysail set ahead of the foremast of a sailing vessel. Its tack is fixed to the bowsprit, to the bow, or to the deck between the bowsprit and the foremost mast...
.
History
After the 1980 America's CupAmerica's Cup
The America’s Cup is a trophy awarded to the winner of the America's Cup match races between two yachts. One yacht, known as the defender, represents the yacht club that currently holds the America's Cup and the second yacht, known as the challenger, represents the yacht club that is challenging...
, people in the Newport, RI area started sailing boats called Mini-12s named for the 12-Meter Yachts used in the America's Cup. As the class developed, word of it spread to Sweden, home of yacht designer Peter Norlin. Norlin tweaked the design, and along with other naval architects he created the 2.4 meter yacht class. Although the 2.4mR is a construction class, Peter Norlin is in practice the totally dominating designer, and the class is therefore often mistaken as a one design class. In addition to all the sailing aspects of the boat, Norlin has worked the design to incorporate features for the physically disabled to use the boat.
One Design
In recent years an attempts have been made to develop a one design class based on the Norlin III. This is primarily because of the need for competition within the paralympics for racing to be about the sailor and not a technical development race. This led to the introduction of (Appendix K to the Class Rules) and now a group is working on a set of stand alone One Design Rules. This is still at the early stages but it is likely a new one design class is formed alongside the development class.Rating formula
As an open class rather than a one-design, all boat designs must meet the following formula.Where (all measurements in mm)
- L = the "corrected" length of the hull (see rule D.6.3)
- d = the midship girth difference (see rule D.6.4)
- F = the average freeboard height (see rule D.6.5)
- S = the total rated area of the mainsail and jib combined.
World Champion
 1993, Kokkola Kokkola Kokkola is a town and municipality of Finland.The town is located in the province of Western Finland and is part of the Central Ostrobothnia region. The town has a population of and covers an area of of which is water. The population density is... |
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1994, Rutalnd Water |
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 1995, Aahus |
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 1996, Cannes Cannes Cannes is one of the best-known cities of the French Riviera, a busy tourist destination and host of the annual Cannes Film Festival. It is a Commune of France in the Alpes-Maritimes department.... |
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1997, |
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1998, Tempere |
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 1999 |
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 2000, Melbourne Melbourne Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater... |
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 2001, Tonsberg Tönsberg The Tönsberg is a hill ridge in the Teutoburg Forest that reaches a height of and lies in the district of Lippe near Oerlinghausen. Hermann's Way runs over the Tönsberg for about 3.5 km.- Points of interest :... |
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| 2002 | NOT HELD | ||
 2003 |
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2004 |
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 2005 |
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2006, Helsinki Helsinki Helsinki is the capital and largest city in Finland. It is in the region of Uusimaa, located in southern Finland, on the shore of the Gulf of Finland, an arm of the Baltic Sea. The population of the city of Helsinki is , making it by far the most populous municipality in Finland. Helsinki is... |
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2007, Kolding Kolding Kolding is a Danish seaport located at the head of Kolding Fjord in Region of Southern Denmark . It is the site of the council Kolding Municipality. It is a transportation, commercial, and manufacturing centre, and has numerous industrial companies, principally geared towards shipbuilding... |
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 2008, Gran Canaria Gran Canaria Gran Canaria is the second most populous island of the Canary Islands, with a population of 838,397 which constitutes approximately 40% of the population of the archipelago... |
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 2009, Fort Myers |
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 2010, Hoorn Hoorn -Cities :* Purmerend * Enkhuizen * Alkmaar * Amsterdam * Lelystad * Den Helder * Leeuwarden -Towns :* Edam... |
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2011, Aalesund |
Disabled World Champion
The 2.4 metre has been used a number of times as equipment for the One Person IFDSInternational Association for Disabled Sailing
The International Association for Disabled Sailing is an affiliate member of the International Sailing Federation and is responsible for coordinating the paralympic sailing competition with the International Paralympic Committee...
World Championship
Paralympics
Sailing is part of the Paralympic GamesSailing at the Summer Paralympics
Sailing has been an official part of the Summer Paralympic Games since 2000, after being a demonstration sport in 1996. The International Association for Disabled Sailing is responsible for coordinating the event with the International Paralympic Committee and the hosts....
and since 2004 the 2.4 Metre has been used as equipment.