International Mistral Class Organisation Limited 2001 IMCO Class Rules 1. GENERAL 1.1 The Mistral One-Design is a sailboard designed by Mistral Sports GmbH.. The objects of these Class Rules are: (i) To keep each board as equal as possible by rigidly maintaining the one-design features of the Mistral One- Design for class racing. (ii) To minimise cost to each competitor. (iii) To encourage the use of racing tactics and sailing skills rather than equipment to increase board speed. 1.2 Except where variations are specifically permitted boards of this class shall be alike in all respects. Any alternations or additional equipment, which are not specifically permitted by these rules, are prohibited. 1.2.1 Repairs and preventative maintenance may be carried out provided such repairs are made in such a way that the essential shape, characteristics or function of the original are not affected. This includes: a) filling the joint between the black Powerbox and the hull with resin to prevent the ingress of water; b) shimming the cassette box assembly in order to bring the gasket assembly closer together; c) Filling the joint between the back, long side of the slot flusher and the board; d) Sealing seams, deck inserts for footstraps & mastrack and any holes drilled either side of the centreboard slot with a suitable adhesive to stop the ingress of water. 1.3 The International Authority of the Class shall be the International Sailing Federation (ISAF), which shall co- operate with the International Mistral Class Organisation (IMCO) in all matters concerning these rules. 1.4 Interpretations of these rules shall be made by the ISAF, which in coming to its decisions shall consult the IMCO. 1.5 Amendments may be proposed by the ISAF after adoption by a simple majority of the delegate's votes in a general meeting of the IMCO. The IMCO and Mistral Sports GmbH shall have identical voting rights with regard to proposals to the rules. Amendments to these rules require approval of the ISAF before they become effective. 1.6 Neither the ISAF nor the IMCO accept any legal responsibility in respect of these rules or any claim arising therefrom. 1.7 English Language 1.7.1 The official language of the class is English and in the event of dispute over translation, the English text shall prevail. 1.7.2 The word 'shall' is mandatory and the word 'may' is permissive. 1.8 Licensed manufacturers The Mistral One-Design shall be manufactured by Mistral Sports GmbH or by other manufacturers appointed and licensed by Mistral Sports GmbH in consultation with the ISAF (hereinafter referred to as licensed manufacturers). 2. REGISTRATION 2.1 No person is permitted to race at an International Regatta unless they are a member of their National IMCO. If there is no National IMCO, then they must be a member of IMCO International. 2.2 Sail numbers shall be issued nationally (i.e. each country issues its own numbers). If their owner's National Authority is administering the Class, the owner shall apply to his/her National Authority for a sail number, otherwise he/she shall apply for a sail number to his/her National Mistral Class Organisation. 3. MEASUREMENT 3.1 Mistral One design boards are required to be measured before they are permitted to race. 3.2 For Olympic Qualification Regattas, Mistral One-Design boards & rigs shall comply with the “IMCO Gold Standard Criteria” and are required to be measured by an “IMCO Chief/Class Measurer” recognised by the National Authority and IMCO International before they are permitted to race. 3.3 Except where other methods of measurement are specifically indicated all measurements shall be taken in accordance with the IMCO Measurement Regulations for International Regattas and the ISAF Equipment Rules of Sailing. 3.4 Hulls and equipment shall measure in accordance with the measurement diagrams in these Rules. If there is a protest concerning measurement or if the race committee or the IMCO are doubtful concerning the correctness of an item or feature of a board for which specific dimensions, weight and/or construction are not stated, the following procedure shall be carried out: · A random sample of ten boards or equipment shall be taken and measured using the same technique. · The disputed board or item of equipment shall be accepted if it does not show any evidence of having been altered and if it has dimensions, weight and/or construction equal to, or between those, of the maximum and minimum criteria specified in the “Gold Standard” and/or obtained from the sample of ten boards or items of equipment. · If there is evidence of an alternation having been made or if the dimensions, weight and/or construction are not equal to, or between those of the maximum or minimum criteria specified in the “Gold Standard” and/or obtained from the sample of ten boards or items of equipment the matter shall be referred to an “IMCO International Approved Class Measurer” for a final decision. 4. IDENTIFICATION MARKS 4.1 The board shall carry the serial number issued by the licensed manufacturer, in a readable condition and located either just behind the towing eye on the bow or behind the centreboard well on the stern. 4.2 The sail shall carry the sail number and in international competition the owner's national letter(s) in accordance with RRS 77. The colour of the sail numbers and national letter(s) shall be black, clearly readable. 4.3 The sail number, national letter(s) and the class emblem shall be placed as laid down in RRS Appendix H as specified for craft under 3.5 metres in length. 5. BOARD 5.1 Hull 5.1.1 The hull shall be produced by a licensed manufacturer in accordance with the plans and specifications of Mistral Sports GmbH, approved by the IMCO/ISAF. 5.1.2 Hulls shall be produced only by using moulds made from the master plug in the possession of Mistral Sports GmbH. 5.1.3 Painting the hull is not permitted except; a) The deck grip may be restored to it’s original condition with a clear coating so that the original deck and graphics of the hull can be clearly seen; b) the hull may be painted only in the area of a repair provided the serial number remains legible; c) Rubbing down the bottom and deck surface using “wet & dry” abrasive material is permitted in order to restore it to it’s original condition 5.1.4 Damaged areas of the hull moulding may be repaired to the original fairlines. 5.1.5 A maximum of 11, minimum of 6 footstraps, which have been produced for the Mistral One-Design by a licensed manufacturer, shall be fitted using the existing inserts. a) Any stainless steel screws & round washers with a maximum diameter of 17mm may be used. b) Cutting and taping of the footstraps is permitted. c) Extra holes in the footstraps may be made. d) A footstrap shall be fitted with at least one screw at each end. e) The Long Light Foam beating strap shall count as two footstraps if fitted with at least one additional screw in the middle. 5.1.6 The centre of gravity of the board shall be taken with the board set up as it is intended to race The Mast track car shall be at the back of the mast track. 5.1.6.1 The centre of gravity of the board shall be between 158cms and 163cms inclusive from the Hull Datum Point (HDP) 5.1.7 The mast track shall be produced by a licensed manufacturer for use with the Mistral One-Design. 5.1.7.1 The track pedal may be locked. 5.1.7.2 Lubricant may be used within the mast track & on the car. 5.1.8 The recessed area aft of mast track pedal may be filled. 5.1.9 The slot gaskets shall be produced by a licensed manufacturer and may be repaired with glue or proprietary self adhesive tape which may also be fitted over the forward short edge of the two gaskets. 5.1.10 Not more than two pieces of foam may be used in the aft half of the centreboard slot to reduce movement. Each piece of foam shall not be more than 100mm in dimension in any direction. 5.1.11 The centreboard cassette shall be produced by a licenced manufacturer for use with the Mistral One Design. and may be shimmed The shimming material may not be fixed to the hull. 5.1.11.1The white stopper in the front of the cassette box at the bottom shall be firmly glued in place. 5.1.11.2 Competitors may shim their slot flusher assembly in order to bring the gasket assembly closer together. 5.1.11.3 Competitors may fill the joint between the backside of the slot flusher and the board. 5.1.12 A strap produced for that purpose by a licenced manufacturer for use with the Mistral One Design may be fitted over the aft half of the centreboard well to combat over-rotation.. 5.2 Centreboard 5.2.1 The centreboard shall be produced by a licensed manufacturer in accordance with the plans and specifications of Mistral Sports GmbH, approved by the IMCO/ISAF. 5.2.2 The centreboard shall be installed and if necessary a deck stopper may be fixed in the head (not in the horns) so that it cannot extend more than 640mm below the underside of the board and more than 1420mm from the Hull Datum Point (HDP) 5.2.2.1 Deck stoppers shall be made of material strong enough not to bend under racing conditions and be fitted with a hard covering that is glued in place so that either is impossible to remove.