ALDEN O CLASS MK I

Fractional Sloop • Centerboard (Trunk) • Built 1922–1925

Dimensions

LOA: 18.25 ft
LWL: 15.5 ft
Beam: 6.17 ft
Max Draft: 3.75 ft
Min Draft: 0.92 ft
Displacement: 1,300 lbs
Ballast: 450 lbs

Performance Ratios

Capsize Ratio ⓘ: 2.26 (use caution offshore)
SA/D Ratio ⓘ: 26.9
D/L Ratio ⓘ: 156
Ballast Ratio ⓘ: 34.6%

Sail Plan

Sail Area: 200 sq ft

Construction

Hull Type: Centerboard (Trunk)
Rig Type: Fractional Sloop
Hull Material: Wood
Ballast Type: —

Production

First Built: 1922
Last Built: 1925
Number Built: 20

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.

Designer

John G. Alden (1884–1962)

Related Boats

Name	LOA (ft)	Year	Rig
ALDEN O CLASS MK II	18.17	1925	Fractional Sloop