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Sailboat Specifications

Dufour T7

Fractional Sloop · Swing Keel

Designed by Jean-Louis Noir · Built by Dufour · First built 1980

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LOA 21.75 ft  ·  Beam 8.17 ft  ·  Displacement 2,360.00 lb  ·  Sail Area 237.00 ft²  ·  Fractional Sloop  ·  Swing Keel
About the Dufour T7 Sailboat

Designed by Jean-Louis Noir and built by the respected French shipyard Dufour from 1980 to 1983, this compact 22-footer represents an intriguing blend of coastal cruising capability and trailer-friendly convenience. With only 250 hulls produced during its brief production run, the T7 has become a relatively uncommon sight on modern waters. The boat's most distinctive feature is its swing keel design, which allows the 4.50-foot draft to be reduced for shallow water exploration, beaching, or trailering. This flexibility makes it particularly appealing for coastal cruising and gunkholing in areas where traditional deep-draft boats cannot venture. The fractional sloop rig provides balanced sail handling, while the generous sail area of 237 square feet delivers respectable performance for a boat of this size. At 2,360 pounds with nearly half that weight in ballast, the T7 strikes a reasonable balance between stability and transportability. The comfort ratio of 10.73 suggests this is primarily a daysailer or weekend cruiser rather than an extended cruising platform, while the capsize screening formula of 2.46 indicates it's best suited for protected waters and coastal sailing rather than offshore passages. For sailors seeking an affordable entry into swing keel cruising with French styling, the T7 offers a unique combination of practicality and character.

Dimensions & Specifications
LOA (Length Overall) 21.75 ft / 6.63 m
LWL (Waterline Length) 20.25 ft / 6.17 m
Beam 8.17 ft / 2.49 m
Max Draft 4.50 ft / 1.37 m
Min Draft 1.00 ft / 0.30 m
Displacement 2,360.00 lb / 1,070 kg
Ballast 1,100.00 lb / 499 kg
Sail Area (Reported) 237.00 ft² / 22.02 m²
Design & Construction
Hull Type Swing Keel
Rigging Type Fractional Sloop
Construction FG
Designer Jean-Louis Noir
Builder Dufour
First Built 1980
Last Built 1983
Number Built 250
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Frequently Asked Questions

What is the Dufour T7's sail area to displacement ratio?

The Dufour T7 has a Sail Area to Displacement ratio (SA/D) of 21.44. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Dufour T7's comfort ratio?

The Dufour T7 has a Ted Brewer Comfort Ratio of 10.73. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Dufour T7 safe for offshore sailing?

The Dufour T7 has a Capsize Screening Formula value of 2.46. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Dufour T7?

The theoretical hull speed of the Dufour T7 is 6.03 kn knots, calculated from its waterline length.

How much does a Dufour T7 weigh?

The Dufour T7 has a displacement of 2,360.00 lb and a length overall (LOA) of 21.75 ft.

Who designed the Dufour T7?

The Dufour T7 was designed by Jean-Louis Noir, first built in 1980.