I 65 CLASS RULES (The 65 Class is an IRSA Supported Class)
INDEX Introduction 3 Section D – Hull D.1 General 12 PART 1 – ADMINISTRATION D.2 Hull 12 Section A – General Section E – Hull Appendages A.1 Language 5 E.1 General 13 A.2 Abbreviations 5 E.2 Hull Appendages 13 A.3 Authorities 5 Section F – Rig A.4 Administration of the Class 6 F.1 Parts 14 A.5 Sailing Instructions 6 F.2 General 14 A.6 Class Rules Amendments 6 F.3 Spars 14 A.7 Class Rules Interpretation 6 Section G – Sails A.
Introduction This introduction provides an informal background only and the 65 Class Rules proper begin on the next page. Certification and alterations 65 Class hulls, hull appendages, rigs and sails are certified by certification control. 65 Class hulls, hull appendages, rigs and sails may, after initial certification control, only be altered to the extent permitted in Section C of the class rules.
Important note about these class rules The IRSA Executive Committee: 1 acknowledges that classes similar to the 65 Class are an active, vibrant and growing area of activity within the world of RC sailing; 2 wishes to assist those sailors who want an international 65 Class designated by IRSA (and therefore also World Sailing, WS) with a view to holding world and/or continental championships; 3 is willing to provide the technical expertise necessary to develop class rules that meet the minimum standard r
PART 1 – ADMINISTRATION Section A – General A.1 LANGUAGE A.1.1 The official language of the class is English and in case of dispute over translation the English text shall prevail. The word “shall” is mandatory and the word “may” is permissive. Except where used in headings: when a term is printed in “bold” the definition in the current ERS applies; when a term is printed in “italics” the definition in the RRS applies; and when a term is printed “underlined” the definition in these class rules applies.
A.3.4 any official measurer. No claim arising from these class rules can be entertained. Notwithstanding anything contained herein, the certification authority has the authority to withdraw a certificate and shall do so on the request of the IRSA. A.4 ADMINISTRATION OF THE CLASS A.4.1 A.4.2 The IRSA has delegated its administrative functions of the class to DNMs. A DNM may delegate part or all of its functions, as stated in these class rules, to an NCA.
A.9.3 Upon receipt of a satisfactorily completed certification control(s) and certification fee if required within the 4 week time limit, the certification authority may issue a certificate. A.10 VALIDITY OF CERTIFICATE A.10.1 A valid certificate is issued using the IRSA approved certification control documentation in accordance with the procedures in A.9 and A.12. Certificates from other documentation or sources are invalid. A.10.
Section B – Boat Eligibility For a boat to be eligible for racing, it shall comply with the rules in this section. B.1 CLASS RULES AND CERTIFICATION B.1.1 The boat shall: (a) be in compliance with the class rules; (b) have valid sail group certificate(s); and (c) have valid certification marks as required. B.2 CLASS ASSOCIATION MARKINGS B.2.1 A valid Class Association Sticker, if required by the NCA or the ICA, shall be affixed to the hull in a conspicuous position.
PART 2 – REQUIREMENTS AND LIMITATIONS The competitor and the boat shall comply with the rules in Part 2 when racing. Certification control to check compliance with rules of Section C is not part of certification. Certification control shall be carried out in accordance with the current ERS except where varied in Part 2. Equipment Inspection is used to check compliance with the rules of Section C. Section C – Conditions for Racing C.1 GENERAL C.1.1 RULES The rules of Section B of the ERS shall not apply.
C.5 HULL APPENDAGES C.5.1 LIMITATIONS The same hull appendages shall be used during an event except when a hull appendage has been lost or damaged beyond repair. Replacement may be made only with the approval of the race committee who shall then remove or cancel any event limitation mark attached to the replaced hull appendage. C.5.2 DEPTH RESTRICTION The depth restriction gauge, when oriented transversely as in Figure J.
wind indicator, shall not exceed 1100 mm. (b) The deck limit mark to the top point dimension, ignoring any wind indicator, shall not be less than 600 mm. C.7 SAILS C.7.1 LIMITATIONS C.7.2 (a) Not more than three sail groups, each consisting of one or two sails, shall be used. (b) Except when certified in more than one sail group, a sail of one sail group shall not be used with a sail of another sail group. (c) A sail shall not be omitted from a sail group. (d) Reefing is prohibited.
(d) Except where achieved by mechanical systems, automated control of rig and/or sails and automated steering and/or navigation are prohibited. (e) On board camera(s) and/or the use of images from any source while racing are prohibited. (f) Except for the establishment and maintenance of a radio control link, control unit positioning information, signal strength, and battery status information, radio transmissions from the boat while racing are prohibited.
have: D.2.4 (1) voids in the waterplane; (2) voids in the profile below the datum waterplane; (3) hollows in the plan view that exceed 3 mm; (4) hollows in the profile under the datum waterplane that exceed 3 mm; (5) transverse hollows in the undersurface of the hull that exceed 3 mm when tested parallel to the waterplane as in Figure J.3. FITTINGS Fittings shall not project outboard of the hull. Section E – Hull Appendages E.1 GENERAL E.1.
Rigs shall comply with the current class rules. F.3 SPAR F.3.1 MAST SPAR DIMENSIONS The maximum permitted cross section of the main structural part of the mast spar above the deck limit mark is 12 mm. F.3.2 OTHER SPAR DIMENSIONS The maximum permitted cross section of the main structural part of a spar, and the combined cross section at junctions of spars, is 12 mm (Figure J.4). Section G – Sails G.1 PARTS A sail group is restricted to not more than one mainsail and one headsail. G.2 GENERAL G.2.
(d) sails shall be measured as tri-lateral sails; (e) discontinuous attachments on the luff shall be disregarded provided their total length measured along the luff does not exceed 15% of the luff length and the longest attachment is no more than twice the shortest; (f) where the sail has no clearly defined clew point, ERS G.4 is altered and the sail edges shall be extended using a template with 450 mm radius. See Figure J.
PART 3 – APPENDICES Certification control shall be carried out in accordance with the current ERS except where varied in Part 3. Section H – Measurement H.1 MEASUREMENT (a) (b) (c) (d) (e) (f) (g) (h) H.2 The sail shall be placed over the measurement grid with the clew point on a grid line and with the head point and tack point on a line perpendicular to the grid lines. See figures J.6 and J.7.
(e) (f) Calculated values in millimetres or square millimetres shall be rounded to the nearest whole number before being recorded on a certification control form or certificate, used in any subsequent calculations, or compared with any limitation in the class rules or certificate. Calculated values in square metres shall be rounded to the nearest third place of decimals before being recorded on the certificate.
Section J – Figures J.1. LENGTH RESTRICTION GAUGE Gauge used to establish hull length and datum waterplane. 661 30 J.2.
J.3. TRANSVERSE HULL HOLLOWS 3 max Hull centreplane 3 max See rule D.2.3(b)(5) 3 max J.4. OTHER SPAR DIMENSIONS 12 mm 12 mm See rule F.3.2.
J.5.
J.6. SAIL MEASUREMENTS (Mainsail) Mainsail A2 cn E H.1(c) Mark upper cross width cn Cn-1 etc. A1 100 mm C2 90o C1 H.
J.7. SAIL MEASUREMENTS (Headsail) Headsail A2 E cn cn Cn-1 A1 etc.
J.8. Class Insignia The dimensional tolerance on the dimensions in the following figure are: + or – 1 mm for dimensions of 10 mm or less + or – 3 mm for other dimensions.
Section K – Sail Identification Marks Please refer to the following document: 65 Class Sail Marks Rules, published by the IRSA.
