IRSA

IRSA Ten Rater Class

P1030880Boats in the IRSA Ten Rater (10R) class are not limited in length by the class rules and usually have overhangs extending beyond their waterline endings. They are generally light, narrow, stable, seaworthy and fast. This IRSA international rule is based on the 1887 “length and sail area rating rule” which allows shorter waterline length boats to have higher sail areas, while longer LWL boats have smaller sails. It is an ‘open’ rule with great freedom to develop design and construction, particularly in rigs and sail plans. Many different hull forms can be found in the 10R class. lenzerheide 10r_e_m_096A modern 10R will usually be made almost entirely of carbon fibre – hull, foils, spars and fittings.

The Ten Rater class is managed by its own International Class Association, the ITCA. Please visit the class website at www.tenrater.org

Ten Rater Class documents (click to expand categories)

International One Metre Class

The International One Metre (IOM) is the most popular RC racing yacht in the world and is raced in over 30 countries.

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The class was created in 1988 by Jan Dejmo aided by Graham Bantock and the Technical Committee of the IMYRU (predecessor of IRSA).  It has continued to grow steadily since its creation.

Although carbon fibre is allowed in the construction of the fin and rudder, construction of the hull must be of either wood or glass fibre. Spars shall be of alloy or timber and the sails are to ‘One Design’ sizes. 

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The number of rigs is limited to three. This makes  the class very popular for amateur builders and many designers have plans for competitive boats. Builders who can supply kits for home completion or completed boats are plentiful.

The IOM class is managed by its own International Class Association, the IOMICA. Please visit the class website at www.iomclass.org 

IRSA Marblehead Class

The IRSA Marblehead (M) class is probably the most exciting to sail with its moderate size and light weight combined with high manoevrability and stability. Essentially a box rule with minimal constraints. A modern M will usually be made almost entirely of carbon fibre – hull, foils, spars and fittings. 

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The class was the first to adopt hi tech construction in the early 90s and  development since then has been limited. This permits almost all boats built since then to be compete well in modern fleets.

The class is quite often referred to as the “Formula One” of radio sailing.

The Marblehead class is managed by its own International Class Association, the IMCA. Please visit the class website at www.marbleheadclass.org 

Documents

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World Radio Sailing Trophies

highlanderHighlander Trophy

International A Class World Championship

The Highlander Trophy was presented by David Coode to ISAF-RSD in 1993 by deed of gift.

The trophy is presented to the winner of the World Championship in the A class.

teamofthreeTeam of Three Trophy

The Team of Three trophy was donated by the International A Class Association and is presented to the winning team of three skippers as drawn from the entrants by the Race Officer.

 

yachtingWorldTrophyYACHTING WORLD TROPHY

International Marblehead World Championship

The Yachting World Trophy was donated by deed of gift to ISAF-RSD in 1986 by the Yachting World Magazine to be competed for at the World Championship for the Marblehead class.

The original Marblehead World Championship trophy was the South Africa Cup which was sailed for between 1978 and 1982. This trophy was returned to South Africa when sanctions were in place and the Yachting World Trophy took its place for the Marblehead World Championship.

  

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SOUTH AFRICA CUP

International One Metre World Championship

The South Africa Cup was originally presented by deed of gift in 1978 to the International Model Yacht Racing Union by the Model Yacht Association of South Africa (MYASA) to be awarded to the winner of the World Championship in the Radio Marblehead class. The trophy was competed for by the Marblehead class between 1978 and 1982 before being returned to South Africa in 1986 when sanctions were in place. The trophy was donated by the Distillers and Vinters of South Africa.

The newly renamed South Africa Radio Sailing Authority (SARSA) then re-donated the Cup in 1994 to ISAF-RSD to be presented to the World Champion of the International One Metre class.

 

canada cup

CANADA CUP

International Ten Rater Class World Championship

The Canada Cup was presented to the International Model Yacht Racing Association in 1975 by deed of gift from the newly formed Canadian Model Yachting Association. The trophy was to be competed for every 4 years at an international regatta for the International Ten Rater class.

The gift was originally initiated in 1973 by the membership of the Metro Marine Modellers of Toronto, Canada. The Metro Marine Modellers formed the Canadian Model Yachting Association in 1974 with initially 65 members.

The first international regatta for the Canada Cup was held at Gosport in the United Kingdom in 1975.

 

IRSA