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Sailboat Specifications

Duet 25

Fractional Sloop · Fin W/Transom Hung Rudder

Designed by Thorkild Lind · Built by Thorkild Lind · First built 1974

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LOA 25.00 ft  ·  Beam 8.40 ft  ·  Displacement 3,600.00 lb  ·  Sail Area 273.00 ft²  ·  Fractional Sloop  ·  Fin W/Transom Hung Rudder
About the Duet 25 Sailboat

Danish designer Thorkild Lind created the Duet 25 in 1974 as a compact coastal cruiser that balances comfortable accommodations with respectable sailing performance. This 25-footer demonstrates classic Scandinavian design sensibilities, featuring clean lines and efficient use of space throughout its fiberglass construction. With a moderate displacement of 3,600 pounds and fractional sloop rig carrying 273 square feet of sail area, the Duet 25 delivers spirited performance in light to moderate conditions. The fin keel and transom-hung rudder configuration provides good maneuverability and responsive handling, making it well-suited for coastal cruising and weekend sailing adventures. The boat's comfort ratio of 14.91 indicates a relatively stiff, performance-oriented design that prioritizes sailing ability over pure comfort, while the capsize screening value of 2.2 suggests adequate stability for protected waters and moderate offshore conditions. The generous beam of 8.4 feet maximizes interior volume and initial stability, creating surprisingly spacious accommodations for a 25-footer. Best suited for coastal cruising, day sailing, and light offshore passages, the Duet 25 appeals to sailors seeking a well-built European design that offers both sailing pleasure and practical cruising capabilities in a manageable package.

Dimensions & Specifications
LOA (Length Overall) 25.00 ft / 7.62 m
LWL (Waterline Length) 20.58 ft / 6.27 m
Beam 8.40 ft / 2.56 m
Max Draft 4.60 ft / 1.40 m
Displacement 3,600.00 lb / 1,633 kg
Ballast 850.00 lb / 386 kg
Sail Area (Reported) 273.00 ft² / 25.36 m²
Design & Construction
Hull Type Fin w/transom hung rudder
Rigging Type Fractional Sloop
Construction FG
Designer Thorkild Lind
Builder Thorkild Lind
First Built 1974
Related Sailboats Coronado 25 · Catalina 25 · Hunter 25 · C&C 25 · Pearson 25
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Frequently Asked Questions

What is the Duet 25's sail area to displacement ratio?

The Duet 25 has a Sail Area to Displacement ratio (SA/D) of 18.65. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Duet 25's comfort ratio?

The Duet 25 has a Ted Brewer Comfort Ratio of 14.91. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Duet 25 safe for offshore sailing?

The Duet 25 has a Capsize Screening Formula value of 2.2. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Duet 25?

The theoretical hull speed of the Duet 25 is 6.08 kn knots, calculated from its waterline length.

How much does a Duet 25 weigh?

The Duet 25 has a displacement of 3,600.00 lb and a length overall (LOA) of 25.00 ft.

Who designed the Duet 25?

The Duet 25 was designed by Thorkild Lind, first built in 1974.