The dimensions that must be measured in compliance with the NF EN ISO 8666 standard are indicated by the name EN/ISO 8666 followed by the relevant chapter.
The boat loading condition for the measurement trim is the Light Craft Condition LCC (in conformity with 6.3 of the EN ISO 8666 standard and 3.5.1 of the EN ISO12217-2 standard) excluding the mooring gear (anchor, chain and mooring line) and the loose external equipment (fenders, warps, mooring lines), the life raft and the sails.
Only the batteries stay onboard. Water ballasts must be emptied.
The hull length must not exceed 9,50 m.
Reminder: This measurement does not include rudders and their fittings, bobstay fittings, devoid of devices designed to lengthen the waterline, nor pulpits and pushpits, solar panels and wind vane autopilots.
The maximum beam must not exceed 3,70 m.
204. MAXIMUM DRAFT (Tmax) : ( EN/ I SO 8666 §45. 4. 4. 1)
The maximum draft must not exceed 2,40 m (boat in measurement trim §201)
The mean freeboard must not be less than 1 m.
The mean freeboard is obtained by dividing the vertical projected area of the topside of the hull (up to the gunwale line as defined in EN ISO 8666 and interpreting the ERS for rounded gunwale) by the hull length (Lh).
The mass of the boat must not be less than 2.700 kg. This mass is established for a boat in loading conditions §201.
207.01 Solid ballast: Reminder: See OSR §2 03 2a
207.02 Liquid ballast: The maximum authorised volume of liquid ballast is 900 L. to be distributed symmetrically (450 L. on each side). In case of Bmax <than 3.70, the total volume must stay smaller to ((900 / Bmax) X 3,70 ), to be distributed symmetrically.
(eg: if Bmax=3.50, ((900 / 3.50) x 3.70 = 952 litres)
The vents for each ballast tank must be located on the deck and have a minimum inside diameter of 25 millimetres. Each vent must have a cap permanently tied close by.
A band measuring a minimum of 25mm in width in a contrasting colour must be affixed around the top of the mast. The lower edge of this band will be situated at the level of the highest point of the mainsail in loading conditions and no case any higher than 16m50 from the waterline. No point of any set sail may be situated above the lower edge of this band. In the absence of such a band, the high point will be the highest point of the tube making up the mast. Furthermore, the height defined by (Hmain+Hjibc+Hspin)/3 must be smaller or equal to 15m50. Hmain, Hjib, Hspin are the heights of the mainsail, jib and spinnaker halyard sheaves as defined here after:
- Hmain: Distance between the waterline and the lower edge of the colour band applied on the mast (or highest point of the mast tube is no band is applied)
- Hjib: Distance between the waterline and the intersection point of the neutral fibre (axis) of the halyard and the front face of the mast.
- Hspin: Distance between the waterline and the lower edge of the highest halyard guide. (If the arrangement doesn’t feature a guide, the height of the neutral axis of the spinnaker halyard in its horizontal position when used)
All measures taken from the waterline apply for the boat in loading condition §201.
The aftermost part of the mainsail (clew) will be materialised on the boom by a black band and will have to be in retreat of 50 cm minimum from the aftermost point used to determine the Lh, whatever the trim of the mainsail.
Once in position (ie: in normal position at the bow, whatever it being retractable or pivoting), the forward extremity of the bowsprit must not exceed the forward extremity of the boat used to determine Lh by more than 2.00 m In no case can the bowsprit be fixed.
Once in position (ie: in normal position on the mast), the forward extremity of the spinnaker pole must not exceed the forward extremity of the boat used to determine Lh by more than 2.00 m
The maximum real sail area, Mainsail + Genoa/Jib, (see definition in 212.03.01) must not be more than 80 m².
212.01 Reminder and general comments
212.01.01 The ERS Rules and the measures of Annexe G of the RRS ISAF rules (size and positioning of the sail numbers) fully apply. (Except for G1.3 (d), identification on Spinnakers)
The race number must be worn on each side of the mainsails, jibs, genoas and storm-sails.
Additionally the mainsail must also display the national letters and the logo of the Class, available from the Class. National letters must be above the race number and starboard letters above the port side ones. Dimensions of the numbers and letters are defined by the International ISAF rules (RCV 2005-2008, Appendix G, Article G1.2)
212.01.02 The sail numbers are issued by the Classe 9.50 by chronological order of requests.
212.02 Measures of the mainsail
212.02.01 The sail area of the mainsail (SMGV) is given by the following formula:
SMGV = Luff*(HB+2*MGT+3*MGU+4*MGM+4*MGL+2*sail foot)/16
212.02.02 Luff Height (ERS G.7.3)
212.02.03 Girths
- HB is the girth of the mainsail head/tip (ERS G.7.8)
- MGT is the upper girth (ERS G.7.7)
Definition: the upper leach point is the point on the leach situated at an equal distance from the head and from the three quarter point.
- MGU is the girth at the three quarter point (ERS G.7.6)
- MGM is the girth at the middle distance point (ERS G.7.5)
- MGL is the girth at the quarter distance point (ERS G.7.4)
212.02.04 Base
Sail foot (ERS G.7.1)
212.02.05 The distance between the mid-foot point (ERS G.5.6.a) and the straight line passing via the mainsail tack and sheet points must not exceed 0.15 metres.
212.03. Measures of the Genoa/Jib
212.03.01 A genoa/jib is a triangular shaped foresail hoisted along a stay, even if this stay is not the main stay. A genoa/jib is a foresail whose width in the middle (ERS G.7.5) is less than or equal to 50% of the luff perpendicular (ERS G.7.11).
212.03.02
LP is the luff perpendicular (ERS G.7.11).
JL is the length of the luff (ERS G.7.3).
212.03.03 The surface area of the jib (SMF) is given by: SMF = 0.5 x JL x LP
The distance between the mid-foot point (ERS G.5.6.a) and the straight line passing via the genoa/jib tack and sheet points must not exceed 0.10 metres.
212.04 Trysail, working and storm jibs
Refer to §4.26 des OSR Cat 1 modified as follows:
A reef band is permitted in the working jib. The trysail must be made of a material weighing a minimum of 8oz
212.05 Sail conformity Certificate
The sailmaker will sign a document (default issued by the Classe 9.50) certifying the materials of the sails, the measures and the area of the mainsail and or each genoa/jib as well as their total conformity with respect to the requirements of RRS and ERS
