Designed as a compact and accessible daysailer, the Thumb 15 offers an approachable entry point into the world of sailing without sacrificing the enjoyment that comes from time on the water. Its modest size makes it well suited to sheltered bays, inland lakes, and calm coastal waters, where beginners and casual sailors alike can build confidence and skill in a manageable package. With limited specifications publicly available, much of the Thumb 15's appeal lies in its simplicity and ease of handling. Smaller daysailers in this class are typically straightforward to rig, trailer, and launch, making ownership practical for those without access to permanent moorings or marina facilities. This kind of boat rewards sailors who value spontaneity — the ability to load up and hit the water on short notice with minimal preparation. While the Thumb 15 may not have the widespread recognition of more established production designs, it represents the kind of no-fuss sailing experience that keeps enthusiasts connected to the water. Prospective buyers are encouraged to seek out owners directly for firsthand insight into performance and condition.
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What is the Thumb 15's sail area to displacement ratio?
The Thumb 15 has a Sail Area to Displacement ratio (SA/D) of 60.4. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Thumb 15's comfort ratio?
The Thumb 15 has a Ted Brewer Comfort Ratio of 2.06. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Thumb 15 safe for offshore sailing?
The Thumb 15 has a Capsize Screening Formula value of 4.04. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Thumb 15?
The theoretical hull speed of the Thumb 15 is 4.97 knots, calculated from its waterline length.
How much does a Thumb 15 weigh?
The Thumb 15 has a displacement of 200.00 lb and a length overall (LOA) of 14.76 ft.
Who designed the Thumb 15?
The Thumb 15 was designed by E. G. Van De Stadt, first built in 1979.