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F1 vs Windmill

How do the F1 and Windmill compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.

F1 F1 Topcat · 1977 Windmill Windmill Johannsen Boat Works · 1953
F1Windmill
Length overall 15.7 ft4.79 m 15.5 ft4.72 m
Waterline length 14.5 ft4.42 m
Beam 6.6 ft2.00 m 4.8 ft1.45 m
Draft 4.2 ft1.27 m
Displacement 254 lb115 kg 198 lb90 kg
Ballast
Sail area 121 ft²11.2 m² 119 ft²11.1 m²
SA / Displacement 48.27 56.05
Displacement / Length 29
Comfort ratio 2.6
Capsize screening 4.14 3.26
Hull speed (kn) 5.1

F1 vs Windmill: the short version

Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.