Built during the mid-1980s by O'Day Corporation, this 30-foot cruiser represents the company's effort to create an affordable yet capable coastal sailing yacht during their final years of production. Designed by the respected C. Raymond Hunt Associates, the O'Day 31 features a modern fin keel and spade rudder configuration that delivers responsive handling and solid windward performance. With a moderate displacement of 10,100 pounds and a healthy ballast ratio, this masthead sloop strikes a practical balance between stability and performance. The generous beam of 10.75 feet provides comfortable interior space while maintaining reasonable stability characteristics, as evidenced by the capsize screening formula of 1.99. The sail area to displacement ratio of 14.98 suggests adequate power for coastal cruising without being overly demanding for shorthanded sailing. Only 150 hulls were completed during the brief production run from 1985 to 1988, making these boats relatively uncommon today. The fiberglass construction and straightforward systems make the O'Day 31 well-suited for coastal cruising and weekend sailing. While not designed for serious offshore passages, the boat's moderate proportions and Hunt pedigree deliver reliable performance for sailors seeking a comfortable, manageable cruiser at an accessible price point.
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What is the Oday 31's sail area to displacement ratio?
The Oday 31 has a Sail Area to Displacement ratio (SA/D) of 14.98. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Oday 31's comfort ratio?
The Oday 31 has a Ted Brewer Comfort Ratio of 24.5. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Oday 31 safe for offshore sailing?
The Oday 31 has a Capsize Screening Formula value of 1.99. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Oday 31?
The theoretical hull speed of the Oday 31 is 6.78 kn knots, calculated from its waterline length.
How much does a Oday 31 weigh?
The Oday 31 has a displacement of 10,100.00 lb and a length overall (LOA) of 30.12 ft.
How much does a used Oday 31 cost?
Based on 3 recent market listings, used Oday 31 sailboats typically sell for between $17,999 and $18,000, with a median asking price of $18,000. Price varies significantly based on year, condition, location, and included equipment.
Who designed the Oday 31?
The Oday 31 was designed by C. Raymond Hunt Associates, first built in 1985.