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ALDEN O CLASS MK I
• Designed by John Alden
General Information
Hull Type:
Centerboard (Trunk)
Rigging Type:
Fractional Sloop
Construction:
Wood
First Built:
1922
Last Built:
1925
Number Built:
20
Dimensions
Length Overall (LOA):
5.56 m
Length Waterline (LWL):
4.72 m
Beam:
1.88 m
Draft (Max):
1.14 m
Draft (Min):
0.28 m
Weight & Ballast
Displacement:
590 kg
Ballast:
204 kg
Sail Plan
Sail Area (reported):
18.58 m²
Engine & Systems
Performance Ratios
Hull Speed:
5.28 knots
SA/Displacement (Reported):
26.92
Ballast/Disp Ratio:
34.62%
Displacement/Length:
155.85
Comfort Ratio:
10.89
Capsize Screening:
2.26
Notes
Alden design #61. It is thought that no more than 20 of this first version of the O Class were built. Designed as a trainer, it proved to be too tender and skitish for the younger sailer and they had died out by 1931. A second version (see ALDEN O MK II) proved to be far more popular.