Hi every body - happy New Year !!!
Here is the New Formula :
LWL x SF x 10 = 8
Water lenght in meters and Sail surface in m² (mono hull only).
All the rest is free except for the use of lead, here replaced by LEAD SHOT ALLOY (lead/antimoine) for ECOLOGICS reasons being sure that will be properly encapsulated.
This formula is simply derived from the 10R just adapted to smaller models.