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{{Infobox Sailboat Specifications
{{Infobox sailboat specifications
|image = Heiko Kroeger 24mR (retuschiert).jpg
⚫
|caption = International 2.4mR
|class_symbol = [[Image:2.4mR black.svg|120x60px]]
|class_symbol = [[Image:2.4mR black.svg|120x60px]]
|image boat = File:Competição de Vela, barco de quilha fixa nas Paralimpíadas (29101681283).jpg
|image size =
|image alt =
⚫
|image caption =International 2.4mR
|crew = 1
|crew = 1
|loa = {{convert|4.16|m|ftin|abbr=on}} <small>(Mark III)</small>
|loa = {{convert|4.16|m|ftin|abbr=on}} <small>(Mark III)</small>
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|mastheight = {{convert|4.65|m|ftin|abbr=on}}
|mastheight = {{convert|4.65|m|ftin|abbr=on}}
|mainsailandjib= {{convert|7.5|m2|abbr=on}} <small>(Mark III)</small>
|mainsailandjib= {{convert|7.5|m2|abbr=on}} <small>(Mark III)</small>
|rig type = Fractional Sloop<ref name="sailboatdata">{{cite web|url=https://sailboatdata.com/sailboat/24-meter|title=SailboatData.com - 2.4 METER Sailboat|accessdate=8 October 2022}}</ref>
|mainsail =
|mainsail =
|jib =
|jib =
|spinnaker =
|spinnaker =
|d-pn =
|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>
|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 |access-date=31 July 2012}}</ref>
|phrf =
|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>
|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
|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 [[International Sailing Federation|World 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.
The '''International 2.4mR''' is a one-person [[keelboat]]. The class is a development class governed by the 2.4mR rule. The rule controlled by [[International Sailing Federation|World Sailing]] (formerly known as ISAF) is one of the few classes designated as an International Class. The International 2.4mR Class rule is closely related to the International 12mR class rule that was used at the America's Cup.


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.
While there is a small but active group of amateur or professional designers and builders around the world, around 90% of the 2.4mR boats are the commercially produced Norlin Mark III designed by Swedish yacht designer Peter Norlin. Over the years, new 2.4mR designs such as the Stradivari III, the Proton and the Super 3 have come into production.


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, it features mainly as a class for sailors with a disability.
The 2.4mR boats are primarily used for racing and the class holds highly competitive national events in many countries. World and European championships can attract as many as 100 boats at a time.


The 2.4mR is ideal for adapted [[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]].
The 2.4mR is ideal for adaptive [[sailing]] since the sailor barely moves in the boat, and all settings can be adjusted from a facing forward seated position. Both hand-steering and foot-steering are possible. The boat is sailed without a [[spinnaker]], but it is equipped with a whisker-pole that is extending outward to hold the shape of the [[jib]] when sailing downwind. The boat's capability as a truly inclusive sailing boat has been demonstrated over many years at multiple Open World Championships.


==History==
==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-Metre]] 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.
After the 1980 [[America's Cup]], people in the Newport, RI area started sailing boats called Mini-12s. They were named after the [[12-meter class|12-Metre]] yachts that were used at the America's Cup. As the fleet started to grow, the word spread to Sweden, home of the yacht designer Peter Norlin. Peter Norlin refined the original designs, and along with other [[naval architect]]s, they collectively initiated the International 2.4mR Class that we know today. Although the 2.4mR is a development class, Peter Norlin has become the dominant designer, and the class is therefore often mistaken as a one-design class.


==One-design==
==One-design==
In recent years 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.
In recent years attempts have been made to develop a one-design class based on the 2.4 Norlin Mark III. This was primarily because the competition within the Paralympics was meant to be more about the sailors' competitiveness and less about the equipment. This led to the introduction of Appendix K to the Class rules and a group of individuals started to work on a set of stand-alone one-design rules. This is still at the early stages but this effort is likely to lead to the emergence of a new one-design 2.4mR class alongside the existing development 2.4mR class.


==Rating formula==
==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 |archiveurl=https://web.archive.org/web/20080517211214/http://www.inter24metre.org/links/CurrentClassRules.pdf |archivedate=2008-05-17 |url-status=dead |accessdate=2009-08-16 }}</ref>
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) |publisher=Inter24metre.org |author=Marie |archive-url=https://web.archive.org/web/20080517211214/http://www.inter24metre.org/links/CurrentClassRules.pdf |archive-date=2008-05-17 |url-status=dead |access-date=2009-08-16 }}</ref>


:<math>
:<math>
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</math>
</math>


Where (all measurements in mm)
(all measurements in mm)
* L = the "corrected" length of the hull (see rule D.6.3)
* L = the "corrected" length of the hull (see rule D.6.3)
* d = the midship girth difference (see rule D.6.4)
* d = the midship girth difference (see rule D.6.4)
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==Events==
==Events==


===World Championships===
===Open World Championships===
{{2.4 Metre World Championship medallists}}
{{main|2.4 Metre World Championship}}


===Para World Sailing Championships===
===Para World Sailing Championships===
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===Paralympics===
===Paralympics===
{{see also|Sailing at the Summer Paralympics}}
{{see also|Sailing at the Summer Paralympics}}
Since 2000 the 2.4 Metre has been the official single-crew class boat for [[sailing at the Summer Paralympics]] although it has been used in a more one design form utilising the Norlin Mk3 design.
From 2000 to 2016, the 2.4 Metre was the official single-crew class boat for [[sailing at the Summer Paralympics]] although it was used in a more one-design form utilising the Norlin Mk3 design.

{{2.4m Paralympic medallists}}


==References==
==References==
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== External links ==
== External links ==
{{Commons category|2.4 Metre (keelboat)}}
{{Commons category}}
* [http://www.inter24metre.org/ International Class Association]
* [http://www.inter24metre.org/ The Official site of the International 2.4mR Class Association]
* [http://www.swe24metre.com/ Swedish Class Association]
* [https://www.sailing.org/classes/2-4-metre 2.4mR (World Sailing)]
* [https://www.24mr.se Malmsten Boats]
* [https://web.archive.org/web/20160304135740/http://origin.sailing.org/classesandequipment/24M#skiptomain 2.4 Metre] at World Sailing
⚫
* [https://web.archive.org/web/20120609001645/http://chargercomposites.com/sail/charger-2-4/#access Charger 2.4]
* [http://www.sailing.org/ World Sailing Homepage]
* [http://www.ukassociation2-4mr.co.uk/ UK Class Association]
* [https://www.super3.co.uk Super 3]
* [http://www.us24meter.org/ US Class Page]
* [https://www.revolutionise.com.au/24metre/home/ Australian 2.4mR National Class Association]
* [http://www.2point4.racing/ Hong Kong 2.4 Metre Class Association]
* [http://www.2point4.at Austrian 2.4mR National Class Association]
* [http://www.24mr.se/ Design & Construction web site]
* [https://www.canada24mr.com Canadian 2.4mR National Class Association]
* [https://www.facebook.com/groups/751096615532753 Czech 2.4mR National Class Association]
⚫
* [https://web.archive.org/web/20120609001645/http://chargercomposites.com/sail/charger-2-4/#access Charger 2.4] at Charger Technology
* [http://2punt4.nl Dutch 2.4mR National Class Association]
* [https://www.fin24metre.org Finnish 2.4mR National Class Association]
* [https://www.2point4.fr French 2.4mR National Class Association]
* [https://2punkt4.de German 2.4mR National Class Association]
* [http://www.2point4.racing/ Hong Kong 2.4mR National Class Association]
* [https://www.duepuntoquattro.it Italian 2.4mR National Class Association]
* [http://www.norway24.no/ny/ Norwegian 2.4mR National Class Association]
* [http://www.swe24metre.com/ Swedish National Class Association]
* [http://www.ukassociation2-4mr.co.uk/ UK 2.4mR National Class Association]
* [http://www.us24meter.org/ US 2.4mR National Class Association]


{{Paralympic Games Sailing}}
{{Paralympic Games Sailing}}
{{International Sailing Federation Classes}}
{{International Sailing Federation Classes}}


[[Category:2.4 Metre| ]]
[[Category:Classes of World Sailing]]
[[Category:Classes of World Sailing]]
[[Category:Keelboats]]
[[Category:Keelboats]]
[[Category:Development sailing classes]]
[[Category:Development sailing classes]]
[[Category:Sailboat type designs by Peter Norlin]]

Latest revision as of 15:54, 7 August 2023

2.4 Metre
Class symbol
International 2.4mR
Development
DesignDevelopment class
Boat
Crew1
Draft1 m (39 in) (Mark III)
Hull
Hull weight260 kg (570 lb)
LOA4.16 m (13 ft 8 in) (Mark III)
Beam0.805 m (2 ft 7+3⁄4 in)
Rig
Rig typeFractional Sloop[1]
Mast length4.65 m (15 ft 3 in)
Sails
Upwind sail area7.5 m2 (81 sq ft) (Mark III)
Racing
RYA PN1250[2]
Paralympics class
[edit on Wikidata]

The International 2.4mR is a one-person keelboat. The class is a development class governed by the 2.4mR rule. The rule controlled by World Sailing (formerly known as ISAF) is one of the few classes designated as an International Class. The International 2.4mR Class rule is closely related to the International 12mR class rule that was used at the America's Cup.

While there is a small but active group of amateur or professional designers and builders around the world, around 90% of the 2.4mR boats are the commercially produced Norlin Mark III designed by Swedish yacht designer Peter Norlin. Over the years, new 2.4mR designs such as the Stradivari III, the Proton and the Super 3 have come into production.

The 2.4mR boats are primarily used for racing and the class holds highly competitive national events in many countries. World and European championships can attract as many as 100 boats at a time.

The 2.4mR is ideal for adaptive sailing since the sailor barely moves in the boat, and all settings can be adjusted from a facing forward seated position. Both hand-steering and foot-steering are possible. The boat is sailed without a spinnaker, but it is equipped with a whisker-pole that is extending outward to hold the shape of the jib when sailing downwind. The boat's capability as a truly inclusive sailing boat has been demonstrated over many years at multiple Open World Championships.

History

[edit]

After the 1980 America's Cup, people in the Newport, RI area started sailing boats called Mini-12s. They were named after the 12-Metre yachts that were used at the America's Cup. As the fleet started to grow, the word spread to Sweden, home of the yacht designer Peter Norlin. Peter Norlin refined the original designs, and along with other naval architects, they collectively initiated the International 2.4mR Class that we know today. Although the 2.4mR is a development class, Peter Norlin has become the dominant designer, and the class is therefore often mistaken as a one-design class.

One-design

[edit]

In recent years attempts have been made to develop a one-design class based on the 2.4 Norlin Mark III. This was primarily because the competition within the Paralympics was meant to be more about the sailors' competitiveness and less about the equipment. This led to the introduction of Appendix K to the Class rules and a group of individuals started to work on a set of stand-alone one-design rules. This is still at the early stages but this effort is likely to lead to the emergence of a new one-design 2.4mR class alongside the existing development 2.4mR class.

Rating formula

[edit]

As an open class rather than a one-design, all boat designs must meet the following formula.[3]

(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

[edit]

Open World Championships

[edit]
Main article: 2.4 Metre World Championship

Para World Sailing Championships

[edit]
Further information: Para World Sailing Championships

The 2.4 metre has been used a number of times as equipment for the One-Person Technical Disabled discipline which holds an annual World Championships.

Year
 Gold Silver Bronze Ref.
1999 Cádiz  Heiko Kröger (GER)  Jens Als Andersen (DEN)  Phillippe Balle (FRA) [4]
2000 not held because of the 2000 Summer Paralympics
2001 St. Petersburg  Heiko Kröger (GER)  Thomas Brown (USA)  Bjørnar Erikstad (NOR) [5][6]
2002 Medemblik  Heiko Kröger (GER)  Damien Seguin (FRA)  Thomas Brown (USA) [7]
2003 Athens  Heiko Kröger (GER)  Damien Seguin (FRA)  Thierry Schmitter (NED) [8]
2004 not held because of the 2004 Summer Paralympics
2005 Sønderborg  Damien Seguin (FRA)  Heiko Kröger (GER)  Thierry Schmitter (NED) [9]
2006 Perth  Heiko Kröger (GER)  Helena Lucas (GBR)  Bjørnar Erikstad (NOR) [10]
2007 Rochester  Damien Seguin (FRA)  Heiko Kröger (GER)  Thierry Schmitter (NED) [11]
2008 not held because of the 2008 Summer Paralympics
2009 Athens  Thierry Schmitter (NED)  Heiko Kröger (GER)  Helena Lucas (GBR) [12][13]
2010 Medemblik  Thierry Schmitter (NED)  Heiko Kröger (GER)  Megan Pascoe (GBR) [14]
2011 Weymouth  Thierry Schmitter (NED)  André Rademaker (NED)  Helena Lucas (GBR) [15][16]
2012 Charlotte Harbor  Damien Seguin (FRA)  Thierry Schmitter (NED)  Paul Tingley (CAN) [17]
2013 Kinsale  Guus Bijlard (NED)  Heiko Kröger (GER)  Damien Seguin (FRA) [18]
2014 Nova Scotia  Heiko Kröger (GER)  Helena Lucas (GBR)  Damien Seguin (FRA) [19]
2015 Melbourne  Damien Seguin (FRA)  Heiko Kröger (GER)  Matthew Bugg (AUS) [20]
2016 Medemblik  Heiko Kröger (GER)  Damien Seguin (FRA)  Matthew Bugg (AUS) [21]
2017 Kiel  Heiko Kröger (GER)  Matthew Bugg (AUS)  Damien Seguin (FRA) [22]
2018 Sheboygan  Matthew Bugg (AUS)  Damien Seguin (FRA)  Dee Smith (USA) [23][24]
2019 Cádiz  Damien Seguin (FRA)  Antonio Squizzato (ITA)  Bjørnar Erikstad (NOR) [25][26]
2021 Warnemünde  Heiko Kröger (GER)  Antonio Squizzato (ITA)  Fia Fjelddahl (SWE) [27]

Paralympics

[edit]
See also: Sailing at the Summer Paralympics

From 2000 to 2016, the 2.4 Metre was the official single-crew class boat for sailing at the Summer Paralympics although it was used in a more one-design form utilising the Norlin Mk3 design.

Year
 Gold Silver Bronze Ref.
2000 Sydney  Heiko Kroeger (GER)  Jens Als Andersen (DEN)  Thomas Brown (USA) details
2004 Athens  Damien Seguin (FRA)  Thomas Brown (USA)  Thierry Schmitter (NED) details
2008 Beijing
Qingdoa 		 Paul Tingley (CAN)  Damien Seguin (FRA)  John Ruf (USA) details
2012 London
Weymouth 		 Helena Lucas (GBR)  Heiko Kroeger  (GER)  Thierry Schmitter (NED) details
2016 Rio  Damien Seguin (FRA)  Matthew Bugg (AUS)  Helena Lucas (GBR) details

References

[edit]
  1. ^ "SailboatData.com - 2.4 METER Sailboat". Retrieved 8 October 2022.
  2. ^ "Portsmouth Number List 2012". Royal Yachting Association. Retrieved 31 July 2012.
  3. ^ Marie. "International 2.4 mR Class Rules (2006)" (PDF). Inter24metre.org. Archived from the original (PDF) on 2008-05-17. Retrieved 2009-08-16.
  4. ^ 1999 IFDS Disabled Sailing World Championships at World Sailing
  5. ^ 2001 IFDS Disabled Sailing World Championships at World Sailing
  6. ^ http://www.spyc.org/World/Championships.htm
  7. ^ 2002 IFDS Disabled Sailing World Championships at World Sailing
  8. ^ 2003 IFDS Disabled Sailing World Championships at World Sailing
  9. ^ 2005 IFDS Disabled Sailing World Championships at World Sailing
  10. ^ 2006 IFDS Disabled Sailing World Championships at World Sailing
  11. ^ 2007 IFDS Disabled Sailing World Championships at World Sailing
  12. ^ 2009 IFDS Disabled Sailing World Championships at World Sailing
  13. ^ http://www.disabledworlds09.gr
  14. ^ 2010 IFDS Disabled Sailing World Championships at World Sailing
  15. ^ 2011 IFDS Disabled Sailing World Championships at World Sailing
  16. ^ http://www.ifdsworlds2011.com
  17. ^ 2012 IFDS Disabled Sailing World Championships at World Sailing
  18. ^ 2013 IFDS Disabled Sailing World Championships at World Sailing
  19. ^ 2014 IFDS Combined World Championships at World Sailing
  20. ^ 2015 Para World Sailing Championships at World Sailing
  21. ^ 2016 Para World Sailing Championships at World Sailing
  22. ^ "Kieler Woche 2017 manage2sail". manage2sail.com.
  23. ^ "2018 Para World Sailing Championship". Sailing.org. World Sailing. Archived from the original on 2021-11-30.
  24. ^ http://www.paraworldsailing2018.com/
  25. ^ "2019 Para World Sailing Championship". Sailing.org. World Sailing. Archived from the original on 2022-01-17.
  26. ^ https://www.paraworldsailing2019.com/en/
  27. ^ https://www.manage2sail.com/sv-SE/event/24mrGoldCup2021#!/results?classId=24mR
[edit]
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