4. HULL

Boards shall be measured in metric units.

  4.1 The hull must be part of a production run of not less than 300 units produced from the same mould using the same construction specification within normal manufacturing tolerances, agreed by the manufacturer with the ISAF. No
alterations or additions to the board as supplied by the manufacturer are permitted except where specifically stated in the Class Rules. In the case of boards less than 263mm long, the minimum production run shall be 150 units

  4.2 Length and width: The hull must not exceed 3950mm in length and the width must not exceed 850mm.
  4.3 Depth.The following applies to hulls which are not less than 3150mm long. At any section the depth shall not be more than 190mm measured from the fair deckline to the underside. At any section within 350mm of the bow or the stern, the depth shall be not more than 125mm.
  4.4 Weight: The board including mast track, centreboard case and skeg boxes shall weigh in a dry state not less than 95% of that official weight for that board registered with the ISAF. The measurer shall immediately report to the IFCA any board which does not comply with this requirement to the IFCA.
  4.5 Stiffness. The stiffness of the board measured in accordance with the ISAF measurement procedure shall not be more that 110% of the official stiffness for that board registered with the ISAF. The measurer shall immediately report any board which does not comply, to the IFCA.
  4.6 Only series production mast steps and centreboard case gaskets may be used.
  4.7 Filler or tape may be used at the seams between centreboard case, gaskets and skeg box and the board. Any other use of these materials on the board is forbidden, except as mentioned in Rule 6.
  4.8 The graphics of a board must include the brand name and model name of the board. Any change to the graphics requires re-registration of the board with the ISAF.

5. CENTREBOARDS
Only the series production centreboard(s) for the board is allowed.

6. REPAIRS

  6.1 Repairs may be carried out to the hull and centreboard to restore them to the original condition and shape.
  6.2 Mast Track and Centreboard Case - The mast track and centreboard case may be replaced if worn or damaged but the position and type shall not be changed.
  6.3 Skeg Box - When a skeg box is damaged, it may be replaced with a similar skeg box, provided that it does not allow skegs of a different type to be fitted and/or does not allow the skeg(s) to be fitted in a different position.
  6.4 Centreboard Case Gaskets - A damaged gasket maybe replaced with a gasket of the same or similar material to that originally supplied by the board's manufacturer.

7. RIG
The board must be fitted with a free sail system. A free sail system is a swivel mounted mast, boom and sail, not supported in a permanent position while sailing, other than by the sailor.

8. SAIL
There are no restriction on the size, material or construction of the sail.

9. SAIL (COMPETITOR) NUMBER

  9.1 The sail number assigned to the competitor using the board shall be displayed above the midline of the sail, on both sides, in numbers not less than 230mm high.
  9.2 The starboard numbers shall be higher than the port, and they shall be in a colour contrasting to the colour of the sail.

10. MANUFACTURERS INSIGNIA
If the insignia or logo of the manufacturer is displayed on the sail, it must be above the sail number.

11. MAST
There is no restriction on the size, material or construction of the mast.

12. BOOM (WISHBONE)
There is no restriction on the size, material or construction of the boom.

13. ADDITIONAL EQUIPMENT
There is no limit on additional equipment except that wire rigging, struts, diamonds and spreaders are forbidden.

14. CLOTHING AND EQUIPMENT

  14.1 Clothing and equipment for the purposes of increasing the weight of the competitor is forbidden.
  14.2 If personal buoyancy is prescribed, every competitor shall wear, above the waist, a jacket, harness or vest with a minimum buoyancy of 4 kg uninflated, in fresh water. The buoyancy shall be tested with a metal weight of 4 kg, which shall remain supported for a minimum of 5 minutes.

15. ADVERTISING

Advertising is allowed in accordance with current Appendix G. In World and Continental events a competitor may be required to display advertising on a board, clothing or equipment.

16 DISPUTES

  16.1 In case of dispute on the Class Rules the decision of an organising authority after taking advice from their appointed measurer shall be final.
  16.2 The official language shall be English and in any dispute over the text, the English text shall prevail.

previous page

< back to main page