Designed by Charles Angle and produced during a brief but notable three-year run from 1961 to 1963, this compact fractional sloop represents an interesting chapter in early fiberglass sailboat development. With only 75 hulls built by Triangle Marine Co. and later Grampian Marine Ltd., the Triangle 20 has become something of a rare find in today's used boat market. The boat's proportions reveal a design focused on coastal sailing and daysailing adventures. Her generous beam of just over seven feet provides surprising interior volume for a 20-footer, while the substantial displacement of 2,300 pounds suggests solid construction and seakindly handling characteristics. The keel/centerboard configuration offers versatility for both deeper waters and shoal exploration, making her well-suited for varied cruising grounds. Performance-wise, the Triangle 20 strikes a balance between comfort and capability. Her comfort ratio of 14.7 indicates relatively quick motion in a seaway, typical of smaller boats, while the capsize screening value suggests reasonable stability for coastal conditions. The fractional rig with 205 square feet of sail area should provide adequate power in light to moderate conditions, though heavy-weather performance would naturally be limited by her size. This vintage design appeals most to sailors seeking an affordable entry into classic fiberglass boats with character.
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What is the Triangle 20's sail area to displacement ratio?
The Triangle 20 has a Sail Area to Displacement ratio (SA/D) of 18.87. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Triangle 20's comfort ratio?
The Triangle 20 has a Ted Brewer Comfort Ratio of 14.7. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Triangle 20 safe for offshore sailing?
The Triangle 20 has a Capsize Screening Formula value of 2.15. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Triangle 20?
The theoretical hull speed of the Triangle 20 is 5.47 kn knots, calculated from its waterline length.
How much does a Triangle 20 weigh?
The Triangle 20 has a displacement of 2,300.00 lb and a length overall (LOA) of 20.50 ft.
Who designed the Triangle 20?
The Triangle 20 was designed by Charles Angle, first built in 1961.