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{{Infobox Sailboat Specifications | |||
|image = 2.4.jpg | |||
|caption = International 2.4mR | |||
|class_symbol = [[Image:Klassenzeichen 2.4mR.PNG|120x60px]] | |||
|crew = 1 | |||
|loa = {{convert|4.16|m|ftin|abbr=on}} <small>(Mark III)</small> | |||
|loh = | |||
|lwl = | |||
|beam = {{convert|0.805|m|abbr=on}} | |||
|draft = {{convert|1|m|3|in|abbr=on|sigfig=2}} <small>(Mark III)</small> | |||
|hull = {{convert|260|kg|abbr=on}} | |||
|mastheight = {{convert|4.65|m|abbr=on}} | |||
|mainsailandjib= {{convert|7.5|m2|abbr=on}} <small>(Mark III)</small> | |||
|mainsail = | |||
|jib = | |||
|spinnaker = | |||
|d-pn = | |||
|rya-pn = 1250<ref name="RYA2012">{{cite web |url=http://www.rya.org.uk/SiteCollectionDocuments/technical/Web%20Documents/py-general/2012%20listv3.xls |title=Portsmouth Number List 2012 |publisher=Royal Yachting Association |accessdate=31 July 2012}}</ref> | |||
|phrf = | |||
|updated = 15 August 2009<ref name="specs"/><ref name="mark">{{cite web |url=http://www.gaviayachts.com/options-prices.htm |title=The Norlin Mark III, ''International 2.4mR Class'' |publisher=GaviaYachts.com}}</ref> | |||
|olympic = para | |||
}} | |||
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.{{clarify|date=September 2012}} | |||
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]]. | |||
==History== | |||
After the 1980 [[America's Cup]], people in the Newport, RI area started sailing boats called '''Mini-12s''' named for the [[12-meter class|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 architect]]s 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.<ref name="specs">{{cite web |url=http://www.inter24metre.org/links/CurrentClassRules.pdf |title=International 2.4 mR Class Rules (2006) |format=PDF |publisher=Inter24metre.org|author=Marie <!-- BOT GENERATED AUTHOR -->|archiveurl=http://www.webcitation.org/5jCxHmZsn|archivedate=2009-08-21|deadurl=no|accessdate=2009-08-16}}</ref> | |||
<math>R = \dfrac{L + 2d - F + \sqrt{S}}{2.37}</math> | |||
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. | |||
==Events== | |||
===World Champion=== | |||
{| {{MedalistTable|type=Year}} | |||
|- | |||
|[[Image:Flag of Finland.svg|88x80px|border]]<br>1993, [[Kokkola]] | |||
|{{flagathlete|[[Patrik Forsgren (sailor)|Patrik FORSGREN]]|SWE}} | |||
|{{flagathlete|[[Peter Norlin (sailor)|Peter NORLIN]]|SWE}} | |||
|{{flagathlete|[[Ralf Casen (sailor)|Ralf CASEN]]|FIN}} | |||
|- | |||
|[[Image:Flag of United Kingdom.svg|88x80px|border]]<br>1994, [[Rutland Water]] | |||
|{{flagathlete|[[Bo Hedensjo (sailor)|Bo HEDENSJÖ]]|SWE}} | |||
|{{flagathlete|[[Carl-Gustaf Fresk (sailor)|Carl-Gustaf FRESK]]|SWE}} | |||
|{{flagathlete|([[sailor]])|}} | |||
|- | |||
|[[Image:Flag of Denmark.svg|88x80px|border]]<br>1995, [[Aahus]] | |||
|{{flagathlete|[[Carl-Gustaf Fresk (sailor)|Carl-Gustaf FRESK]]|SWE}} | |||
|{{flagathlete|[[Marko Dahlberg (sailor)|Marko DAHLBERG]]|FIN}} | |||
|{{flagathlete|([[sailor]])|}} | |||
|- | |||
|[[Image:Flag of France.svg|88x80px|border]]<br>1996, [[Cannes]] | |||
|{{flagathlete|[[Peter Norlin (sailor)|Peter NORLIN]]|SWE}} | |||
|{{flagathlete|[[Bo Hedensjo (sailor)|Bo HEDENSJÖ]]|SWE}} | |||
|{{flagathlete|[[Imma Bjorndahl (sailor)|Imma BJöRNDAHL]]|FIN}} | |||
|- | |||
|[[Image:Flag of United Arab Emirates.svg|88x80px|border]]<br>1997, [[]] | |||
|{{flagathlete|[[Marko Dahlberg (sailor)|Marko DAHLBERG]]|FIN}} | |||
|{{flagathlete|[[Peter Norlin (sailor)|Peter NORLIN]]|SWE}} | |||
|{{flagathlete|[[Patrik Forsgren (sailor)|Patrik FORSGREN]]|SWE}} | |||
|- | |||
|[[Image:Flag of Finland.svg|88x80px|border]]<br>1998, [[Tampere]] | |||
|{{flagathlete|[[Rikard Bjurstrom (sailor)|Rikard BJURSTROM]]|FIN}} | |||
|{{flagathlete|([[sailor]])|}} | |||
|{{flagathlete|([[sailor]])|}} | |||
|- | |||
|[[Image:Flag of Sweden.svg|88x80px|border]]<br>1999 | |||
|{{flagathlete|[[Tom Bjorndahl (sailor)|Tom BJöRNDAHL]]|FIN}} | |||
|{{flagathlete|[[Marko Dahlberg (sailor)|Marko DAHLBERG]]|FIN}} | |||
|{{flagathlete|[[Peter Norlin (sailor)|Peter NORLIN]]|SWE}} | |||
|- | |||
|[[Image:Flag of Australia.svg|88x80px|border]]<br>2000, [[Melbourne]] | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|{{flagathlete|[[Rikard Bjurstrom (sailor)|Rikard BJURSTROM]]|FIN}} | |||
|{{flagathlete|[[Peter Norlin (sailor)|Peter NORLIN]]|SWE}} | |||
|- | |||
|[[Image:Flag of Norway.svg|88x80px|border]]<br>2001, [[Tonsberg]] | |||
|{{flagathlete|[[Heiko Kroeger (sailor)|Heiko KROEGER]]|GER}} | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|{{flagathlete|[[Peter Norlin (sailor)|Peter NORLIN]]|SWE}} | |||
|- | |||
|2002 | |||
|NOT HELD | |||
| | |||
| | |||
|- | |||
|[[Image:Flag of Germany.svg|88x80px|border]]<br>2003 | |||
|{{flagathlete|[[Marko Dahlberg (sailor)|Marko DAHLBERG]]|FIN}} | |||
|{{flagathlete|[[Damien Seguin (sailor)|Damien SEGUIN]]|FRA}} | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|- | |||
|[[Image:Flag of Sweden.svg|88x80px|border]]<br>2004 | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|{{flagathlete|[[Ulf Arvidsson (sailor)|Ulf ARVIDSSON]]|SWE}} | |||
|{{flagathlete|([[sailor]])|}} | |||
|- | |||
|[[Image:Flag of Italy.svg|88x80px|border]]<br>2005 | |||
|{{flagathlete|[[Nick Scandone (sailor)|Nick SCANDONE]]|USA}} | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|{{flagathlete|[[Helena Lucas (sailor)|Helena LUCAS]]|GBR}} | |||
|- | |||
|[[Image:Flag of Finland.svg|88x80px|border]]<br>2006, [[Helsinki]] | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|{{flagathlete|[[Thierry Schmitter (sailor)|Thierry SCHMITTER]]|NED}} | |||
|{{flagathlete|([[sailor]])|}} | |||
|- | |||
|[[Image:Flag of Denmark.svg|88x80px|border]]<br>2007, [[Kolding]] | |||
|{{flagathlete|[[Damien Seguin (sailor)|Damien SEGUIN]]|FRA}} | |||
|{{flagathlete|[[Heiko Kroeger (sailor)|Heiko KROEGER]]|GER}} | |||
|{{flagathlete|[[Thierry Schmitter (sailor)|Thierry SCHMITTER]]|NED}} | |||
|- | |||
|[[Image:Flag of Spain.svg|88x80px|border]]<br>2008, [[Gran Canaria]] | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|{{flagathlete|[[Damien Seguin (sailor)|Damien SEGUIN]]|FRA}} | |||
|{{flagathlete|[[Hans Asklund (sailor)|Hans ASKLUND]]|SWE}} | |||
|- | |||
|[[Image:Flag of United States.svg|88x80px|border]]<br>2009, [[Fort Myers]] | |||
|{{flagathlete|[[John Ruf (sailor)|John RUF]]|USA}} | |||
|{{flagathlete|[[Carl Horrocks (sailor)|Carl HORROCKS]]|USA}} | |||
|{{flagathlete|[[Paul Tingley|Paul TINGLEY]]|CAN}} | |||
|- | |||
|[[Image:Flag of the Netherlands.svg|88x80px|border]]<br>2010, [[Hoorn]] | |||
|{{flagathlete|[[Paul Tingley|Paul TINGLEY]]|CAN}} | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan BERLIN]]|SWE}} | |||
|{{flagathlete|[[Hans Asklund (sailor)|Hans ASKLUND]]|SWE}} | |||
|- | |||
|[[Image:Flag of Norway.svg|88x80px|border]]<br>2011, [[Aalesund]] | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan Berlin ]]|SWE}} | |||
|{{flagathlete|[[Marko Dahlberg (sailor)|Marko Dahlberg]]|FIN}} | |||
|{{flagathlete|[[Rikard Bjurström (sailor)|Rikard Bjurström ]]|FIN}} | |||
|- | |||
|[[Image:Flag of Italy.svg|88x80px|border]]<br>2012, [[Porto San Giorgio]] | |||
|{{flagathlete|[[Peter Andersson (sailor)|Peter Andersson]]|SWE}} | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan Berlin]]|SWE}} | |||
|{{flagathlete|[[Megan Pascoe(sailor)|Megan Pascoe]]|GB}} | |||
|- | |||
|[[Image:Flag of United Kingdom.svg|88x80px|border]]<br>2012, [[Poole]] | |||
|{{flagathlete|[[Stellan Berlin (sailor)|Stellan Berlin]]|SWE}} | |||
|{{flagathlete|[[Helena Lucas (sailor)|Helena Lucas]]|GB}} | |||
|{{flagathlete|[[Megan Pascoe(sailor)|Megan Pascoe]]|GB}} | |||
|} | |||
===Disabled World Champion=== | |||
The 2.4 metre has been used a number of times as equipment for the One Person [[International Association for Disabled Sailing|IFDS]] World Championship | |||
===Paralympics=== | |||
Sailing is part of the [[Sailing_at_the_Summer_Paralympics|Paralympic Games]] and since 2000 the 2.4 Metre has been used in one of the classes. | |||
{{Paralympic Games Sailing}} | |||
==References== | |||
<references/> | |||
== External links == | |||
{{Commons cat|2.4 Metre (keelboat)}} | |||
* [http://www.inter24metre.org/ International Class Association] | |||
* [http://origin.sailing.org/classesandequipment/24M#skiptomain 2.4 Metre] at International Sailing Federation (ISAF) | |||
* [http://www.sailing.org/ ISAF Homepage] | |||
* [http://www.ukassociation2-4mr.co.uk/ UK Class Association] | |||
* [http://www.us24meter.org/ US Class Page] | |||
* [http://www.24mr.se/ Design & Construction web site] | |||
* [http://chargercomposites.com/sail/charger-2-4/#access Charger 2.4] at Charger Composites | |||
{{International Sailing Federation Classes}} | |||
{{Keelboats Worldwide}} | |||
[[Category:Classes of the International Sailing Federation]] | |||
[[Category:Keelboats]] | |||
Revision as of 13:08, 13 March 2013
Template:Infobox Sailboat Specifications 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.Template:Clarify
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.
History
After the 1980 America's Cup, 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.[1]
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.
Events
World Champion
Disabled World Champion
The 2.4 metre has been used a number of times as equipment for the One Person IFDS World Championship
Paralympics
Sailing is part of the Paralympic Games and since 2000 the 2.4 Metre has been used in one of the classes. Template:Paralympic Games Sailing
References
External links
- International Class Association
- 2.4 Metre at International Sailing Federation (ISAF)
- ISAF Homepage
- UK Class Association
- US Class Page
- Design & Construction web site
- Charger 2.4 at Charger Composites
Template:International Sailing Federation Classes
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