Catapult Catamaran: Class Rules July 2014

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The maintenance and amendment of the Class Rules are the responsibility of the Catapult Class Association Committee within the constraints of the Class Constitution which takes precedence over the Rules. The Committee may delegate the responsibility for enforcement of the Rules, or approval of minor modifications to the boat, to the designated Class Measurer.


Any decision of the Class Association or Committee, which may in any way be connected with the official drawings and/or the specifications of the Catapult, shall be subject to the approval of the Copyright Holder or his/her licensee.


The Catapult catamaran shall consist of the basic hulls, frame and mast as approved by the Class Association and the Copyright and Patent Holder or his/her licensee. The MAXIMUM basic measurements shall be as follows:


5.00 m


2.25 m


7.20 m

The general arrangement of the Catapult is shown in Appendix 1.(to follow)


The hull frame and mast shall be constructed in aluminium. The hull tubes shall be constructed in Hypalon or polyurethane coated nylon.

5.      SAIL

a.       The Catapult shall be a una rig craft carrying a sail approved by the Association.

b.       The sail area shall not be more than ten square metres, measured by the prescribed ISAF method.

c.     Any rig supplied by the Copyright Holder or his/her licensee, past or present, will not be considered as a modification and will be allowed in competition.

6.     FOILS

a.     Rudders and dagger boards shall follow  the size and shape as originally designed.

b.     Dagger boards shall be located inboard as originally designed.

c.     GUIDANCE. Dagger boards should remain down throughout a race (other than to clear weed etc.)  The Committee May 2016 will consider making this guidance from the AGM July 2015 a racing rule.


a.     Trapezes shall be allowed.

b.     Racks, sliding seats, or any contrivance extending outboard of the hull beams, the purpose or effect of which is or may be to support or assist in supporting the helmsman or crew outboard or partially outboard, are prohibited. [Mast, trapeze wires, restraining lines, and foot loops are excepted.]

8.     CREW

There shall be no restriction on double-handed sailing.


a.     No boat shall be eligible to race within the Catapult Class, or to be recognised as a Catapult, unless it complies with the copyrighted official drawings and/or specifications.

b.     Owners may make minor modifications to sail and rig control systems, fairings and hiking aids. However, the Class Association Committee shall have discretion to determine whether any particular type of modification qualifies as being minor.

c.     Owners making other modifications of a minor nature should seek the approval of the Class Measurer who, when in doubt, shall refer to the Class Association Committee for a final decision.

d.     Members not satisfied with decisions taken by the Class Measurer may appeal to the Class Association Committee whose decision will be final.


Measurement certificates will not normally be issued, unless required by an authority governing racing at an event. In such cases the Class Measurer shall be empowered to issue certificates, provided s/he is satisfied the boat meets the requirements of the Class Rules.


a.       The Association shall arrange for and supervise Championship meetings and Class series for the Catapult Class in Britain and overseas.

b.       Racing arranged by the Catapult Class Association shall be open to any member sailing an approved Catapult.

c.     The latest edition of the Royal Yachting Association's Racing Rules shall be adopted for all Catapult racing events.

d.     Where options are allowed within the RYA Racing Rules, the Class Association Committee shall decide the preferred option and this will be communicated to the organising club or authority and applied subject to their approval.



13th July 2014: Ratified at the annual General Meeting 2014