F18 Class Rules

B.1.3 MINIMUM WEIGHT

1.3.1 The minimum weight of the platform is fixed at 130 kg
1.3.2 The minimum weight of the boat ready to sail is fixed at 180 kg
1.3.3 A corrector weight of maximum 7 kg may be used to satisfy these two conditions. This corrector weight shall be fixed to the outside of the forward beam on the starboard side and shall be removable for checking.

FYI, the Capricorn platform is build heavier than the Tiger but has a much lighter rig to meet the 180 kg whilst reducing weight aloft.