CLASS RULES
The International 2.4mR Class Association is the world organisation that governs the International 2.4mR Class (2.4mR) and the 2.4 Norlin One Design Class (2.4 NOD).
Both 2.4mR and 2.4 NOD boats comply with the 2.4mR Rating Rule.
The 2.4mR World Championship includes all 2.4mR boats, with the first boat awarded the World Cup Trophy and the first 2.4 NOD boat awarded the 2.4 NOD Trophy.
INTERNATIONAL 2.4mR CLASS (2.4mR)
The International 2.4mR Class is a development class for boats that comply with the 2.4mR Open Class Rules. 2.4mR boats are administered by Member National Authorities under delegation by World Sailing.
The 2.4mR class rule provides a development option for sailors who want to innovate within the meter rule, which has produced beautiful boats for over a century. Current production 2.4mR boats include the Super 3, Stradivari, and Södergren. Under this rule, home-built 2.4mR boats can also be built.
2.4mR builders
Super 3 (England) subject to transfer to David Heritage Racing Yachts (England)
Ontario Yachts (Canada)
Malmsten Boats (Sweden)
Other projects: Fauroux (France), Auxinavy (Spain), Linked4sailing (Argentina), Swarbrick (Australia)
2.4mR Class Rules (Updated: 16 June 2025) (NEW)
Class Rule Changes (26 February 2025)
Class Rule Changes (Effective date: 12 December 2024)
Class Rule Interpretation - Rigging Point 2 (Effective date: 21 May 2024)
Forms:
2.4mR Measurement Form (NEW)
2.4mR Measurement Form (.xls)
2.4 NORLIN ONE DESIGN CLASS (2.4 NOD)
The 2.4 NOD is a restricted class with boats complying with the 2.4 NOD Closed Class Rules. 2.4 NOD boats are a class of 2.4mR boats, based on the Norlin Mk III design and administered by the 2.4mR ICA.
The 2.4 NOD class rule provides a one-design option for sailors racing in boats of equal performance, where results are determined by the skill of the sailor. The 2.4 NOD has been selected by World Sailing as the single-person technical equipment for Para Sailing. 2.4 NOD builders understand that they are constructing a standard product that will not become outdated and is subject to quality control.
2.4 NOD builders accredited by the ICA:
Super 3 (England) subject to transfer to David Heritage Racing Yachts (England)
Ontario Yachts (Canada)
Other projects: Auxinavy (Spain), Linked4sailing (Argentina)
2.4 NOD Class Rules 2025 (v.2) (NEW)
2.4 NOD Construction Manual 2023
Forms:
2.4 NOD Measurement Report Form for OLD Boats
2.4 NOD Measurement Report Form for NEW Boats
2.4 NOD Measurement Report Mast & Boom
Copies of 2.4 NOD Certificates can be foundhere
IF YOU NEED A NEW CERTIFICATE PLEASE SEE HERE
BOAT BUILDERS
MALMSTEN BOATS (SWEDEN)
ONTARIO YACHTS (CANADA)
SUPER 3 / DAVID HERITAGE RACING YACHTS (UNITED KINGDOM)
SAILMAKERS
CLOWN SAILS (GERMANY)
DOYLE (UNITED KINGDOM)
FABER AND MUENKER (GERMANY)
FRITZ SEGEL (GERMANY)
HAMEL SAILS (SWEDEN)
JAMA SAILS (GERMANY)
NEBSAILS (FINLAND)
NORTH SAILS (WORLD)
QUANTUM SAILS (SPAIN)
UK SAILMAKERS (UNITED KINGDOM)
MARKETPLACE
If you wish to sell or purchase a second-hand boat please contact your NCA or visit Facebook groups and pages listed below.