Keel and masts standardised in the new IMOCA rules
samedi 21 décembre 2013 –
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IMOCA ratifies the new rules that apply to the new boats
On 17 December IMOCA validated the following decisions :
For greater reliability and better cost control :
- the keel and the masts are standardised,
- limited use of ‘exotic’ materials.
For greater simplicity :
- the 10° criteria (maximum heeling angle in class measurement configuration, in a static condition) has been removed, thus making possible ballast tanks more viable ;
- ballast tanks are limited to 4 in total (compared with 8 or more previously), two on each side in any position. The volumes are reduced and the boats are lighter with the equivalent power.
To contribute to the uniformity of the fleet :
- The Righting Moment (or RM) is amended to 25.5 tonne-metres at 25° heeling angle ;
- Ultimately the power to weight ratio between the existing boats and the new craft should remain more or less the same ;
- The maximum weight of the keel bulb is set at 3,100kg to limit the weight gain in the new boats and stay in harmony with the existing boats ;
- The AVSwc* is set at 110°, which equates to its previous value ; of note is the fact that the IMOCA 60s haven’t capsized since this value has been adhered to. This 110° becomes an important value, which will limit the volume of the ballast tanks controlled in other respects by the limitation of power.
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