See §100, see first paragraph.
The validation of the displacement will be made by the weigh-in (see chapter 301).
The validation of the height of the centre of gravity is based on the 90° test defined in chapter 302. Within the framework of this check, the measurer will note down the following measurements on his report: Lh, Bmax, Tmax, average freeboard, top point of the mast, water ballast volume following the procedures file supplied by the Classe 9.50.
The weigh-in of the boat in loading conditions §201 will have to be carried out in the presence of a measurer substantiated by the Classe 9.50, with the help of a weight indicator also substantiated by the Classe 9.50. This person will supply the class with a report of the weigh-in.
This test is aimed at proving that the boat is capable of righting itself from the broached position.
It must be completed in the presence of a measurer substantiated by the Class 9.50
The boat in loading conditions §201 is heeled at 90° and kept in this position with the aid of a strop passed around the mast at the level of the band at the top point of the mast (see §208 of the present rules). For boat whose mast height is 15.50 m, the tension exerted on the strop must not be lower than 130 kg, or higher than 170 kg. These values are only applicable for a band at a height of 15.50 metres. For a boat whose mast is shorter or longer, the force applied to the strop will have to be higher than a moment of 130 kg x 15.50 = 2015 kg.m/H but no higher than 170 kg x 15.50 m = 2635 kg.m/H (ie: For a mast of 14.50m, 2015/14.50=139 kg and 2635/14.50=182 kg. For a mast of 16.50m 122 kg minimum and 160 kg maximum).
The boat is considered as heeled at 90° when the aftermost points of the sheerlines are situated in the same vertical plane.
A watertight collision bulkhead must be installed within 5 and 10% of LWL aft of the forward extremity of Lh and aft of the forward extremity of waterline.
The minimum volume, measured from the plan passing via the sheer lines (such as is defined in the EN/ISO 8666), must be at least equal to the boat’s maximum beam expressed in m³. The presence of a coach roof is compulsory. It must provide minimum headroom of 1.80 m on a ground area of 2m².A certificate signed by the architect mentioning this volume and the minimum ground surface will have to be provided.
The yacht will have to conform to the prescriptions of the EN/ISO 12217-2 § 6.3.2.b. standard. The volumes ahead of the front watertight bulkhead, and aft the rear watertight bulkhead when applicable, must be accounted for as buoyancy volumes unless they are filled with floatation foam.
An engine with its fixed propulsion as well as a propeller must be installed and enable the boat to reach the minimum speed required by the OSR rules.
The sail number (without its ‘root’) must be very clearly inscribed once on the deck (minimum height of 500 mm) and once on each side of the hull (minimum height of 500 mm).
Reminder: The onboard equipment must conform to the OSR ruling for the relevant race category, such as is modified by the present rules. The location of the life raft must enable its quick and easy launch, whatever the trim of the boat.
It will have to be fixed to its designated location, and will possibly be sealed with lead. A ground tackle is compulsory and should include a 12 kg anchor, 12 m of chain measuring a minimum of 8 mm in diameter and 30 m of Nylon warp measuring a minimum diameter of 12 mm. This so called ‘safety’ ground tackle must be permanently installed in the boat with dedicated stowage where it will possibly be sealed with lead.
