Designed by Michel Joubert and built by French manufacturer Kirié starting in 1978, this 31-foot sailboat represents solid European cruising yacht engineering from the late 1970s. With her moderate displacement of 14,550 pounds and substantial ballast ratio, the Fifty 33 offers the stability and seaworthiness that French designers are renowned for. Her fin keel configuration with rudder mounted on a skeg provides excellent directional stability while maintaining good maneuverability in tight quarters. The masthead sloop rig delivers 548 square feet of working sail area, creating a well-balanced sail plan suitable for both coastal cruising and offshore passages. Her comfort ratio of 31.61 indicates motion characteristics that favor longer-distance cruising over pure performance, while the capsize screening value of 1.84 demonstrates good stability for ocean work. The fiberglass construction ensures durability and low maintenance, important considerations for cruising sailors. Her beam of over 11 feet provides generous interior volume for extended voyaging, while the nearly 5-foot draft offers good upwind performance without limiting access to most cruising destinations. This design strikes an appealing balance between comfort, safety, and sailing ability that made French boats of this era popular among serious cruising sailors.
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What is the Fifty 33's sail area to displacement ratio?
The Fifty 33 has a Sail Area to Displacement ratio (SA/D) of 14.76. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Fifty 33's comfort ratio?
The Fifty 33 has a Ted Brewer Comfort Ratio of 31.61. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Fifty 33 safe for offshore sailing?
The Fifty 33 has a Capsize Screening Formula value of 1.84. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Fifty 33?
The theoretical hull speed of the Fifty 33 is 7.01 kn knots, calculated from its waterline length.
How much does a Fifty 33 weigh?
The Fifty 33 has a displacement of 14,550.00 lb and a length overall (LOA) of 31.30 ft.
Who designed the Fifty 33?
The Fifty 33 was designed by Michel Joubert, first built in 1978.