The International Radio Sailing Association (IRSA) formerly the ISAF Radio Sailing Division is an affiliate member of the

International Sailing Federation International is an adjective (also used as a noun) meaning "between nations". International may also refer to: Music Albums * ''International'' (Kevin Michael album), 2011 * ''International'' (New Order album), 2002 * ''International'' (The T ...

that sanctions

radio-controlled Radio control (often abbreviated to RC) is the use of control signals transmitted by radio to remotely control a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a smal ...

sailing Sailing employs the wind—acting on sails, wingsails or kites—to propel a craft on the surface of the ''water'' (sailing ship, sailboat, raft, windsurfer, or kitesurfer), on ''ice'' (iceboat) or on ''land'' (land yacht) over a chosen cour ...

competitions. It is authorised by ISAF to conduct up to three official World Championships each year.

Classes

Four classes of radio sailing boat are designated as International IRSA classes, as follows from the smallest to largest: * International One Metre The IOM class rules specify a monohull of maximum length 1000 mm, with maximum draught 420 mm. There is a minimum weight of 4000 g, which makes homebuilding of competitive boats possible. The IOM has three one-design rigs. To keep costs down, hull materials are restricted to either wood or glassfiber, while masts and booms are restricted to either aluminium or wood. * International Marblehead A Marblehead has a maximum length of 1290 mm and a maximum draught of ca 700 mm, but no minimum displacement. Up to six rigs are allowed. * International Ten Rater *

International A Class The International Radio A Class (RA) is a class of radio controlled sailing yacht used for competitive racing. It is a measurement controlled classes administered by the International Radio Sailing Association. The class is a designated IRSA Inter ...

History

At the I.M.Y.R.U. General Meeting at Dunkerque in 1982, it was resolved to adopt the IYRR and IYRU Measurement Instructions and to follow the IYRU Constitution and Regulations as closely as possible. For the next eight years a lot of very hard work was done by the I.M.Y.R.U., particularly by its then Chairman, Norman Hatfield, to get Model Yachting accepted into membership of the full-size governing body, the International Yacht Racing Union (IYRU). This work culminated on 1 May 1990 when the I.M.Y.R.U. became the Model Yacht Racing Division of the IYRU (IYRU - MYRD). In its turn, in August, 1996, the IYRU changed its name to the

(ISAF) and IYRU-MYRD became the ISAF Radio Sailing Division (RSD). In 2009 the Division changed its name to International Radio Sailing Association to make it clear that it was an independent body and not a part of ISAF. The two organisations have close links centred on Appendix E of the Racing Rules of Sailing.

References

Official IRSA Website

Official International One Metre Website
{{International Sailing Federation Classes Yachting associations Sailing associations World Sailing Radio-controlled racing