Designed by Clark Mills in 1953, this compact dinghy has earned its place as one of America's most enduring small boat designs with over 5,700 hulls launched. The Windmill represents classic single-handed sailing at its finest, combining responsive handling with forgiving characteristics that make it equally appealing to novice sailors and racing enthusiasts. At just over 15 feet, the Windmill's fractional sloop rig and centerboard configuration deliver exceptional performance in light to moderate conditions. The boat's relatively high sail area to displacement ratio of 56.09 provides spirited acceleration and nimble response, while the deep draft of 4.17 feet ensures impressive upwind capability for its size. Built in both wood and fiberglass by Advance Sailboat Corp., these boats have proven remarkably durable over seven decades of production. The Windmill excels in protected waters, small lakes, and coastal bays where its shallow draft allows exploration of shoal areas larger boats cannot access. With a comfort ratio of 2.59, this is purely a day sailor designed for exhilarating short-handed sailing rather than extended cruising. The design's longevity and active one-design racing fleet speak to its well-balanced characteristics and enduring appeal among small boat sailors.
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What is the Windmill's sail area to displacement ratio?
The Windmill has a Sail Area to Displacement ratio (SA/D) of 56.09. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Windmill's comfort ratio?
The Windmill has a Ted Brewer Comfort Ratio of 2.59. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Windmill safe for offshore sailing?
The Windmill has a Capsize Screening Formula value of 3.26. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Windmill?
The theoretical hull speed of the Windmill is 5.10 kn knots, calculated from its waterline length.
How much does a Windmill weigh?
The Windmill has a displacement of 198.00 lb and a length overall (LOA) of 15.50 ft.
Who designed the Windmill?
The Windmill was designed by Clark Mills, first built in 1953.