Marblehead
Open class, box class
Carbon hulls, foils and spars
Hull length 1.3 m
Displacement 4.5 to 5.5 kgs
Draught 660 mm
Sail area 0.5161 m²
Ten Rater
Open class
Waterline length x Sail area = constant
Carbon hulls, foils and spars
Hull length 1.3 to 1.8 m
Displacement 5 to 7 kgs
Draught 700 mm
Sail area 0.9 to 1.1 m²
A Class
Open class with formula to calculate the rating
Carbon hulls, foils and spars
Hull length 1.6 to 1.9 m
Displacement 12 to 18 kgs
Draught 300 mm
Sail area 0.9 to 1.1 m²
One Metre
Box class, OneDesign rigs
Glass hulls, carbon foils and alloy spars
Hull length 1 metre
Displacement 4 kgs
Draught 420 mm
Sail area 0.6 m²