The Dufour 520 Grand Large — marketed and commonly referred to as the Dufour 52 — is a flagship cruising sloop designed by Umberto Felci and launched by Dufour Yachts in 2017. At 50 feet 3 inches LOA with a 16-foot beam, the 520 GL offers an unusually spacious interior for a monohull, available in four- or five-cabin configurations popular with both private owners and charter operators. The fractional sloop rig carries over 1,000 square feet of sail and delivers lively performance with a hull speed of 9 knots; the 520 GL was named Cruising World Boat of the Year (Full-Size Cruiser 50–54 feet) in 2018. Felci''s hull features hand-laid solid fiberglass below the waterline and PVC-cored construction above for weight savings. The boat is offered with standard and shallow keel options, with ballast weights of 8,977 and 9,921 pounds respectively.
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What is the Dufour 52's sail area to displacement ratio?
The Dufour 52 has a Sail Area to Displacement ratio (SA/D) of 16.37. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Dufour 52's comfort ratio?
The Dufour 52 has a Ted Brewer Comfort Ratio of 27.37. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Dufour 52 safe for offshore sailing?
The Dufour 52 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 Dufour 52?
The theoretical hull speed of the Dufour 52 is 9.0 knots, calculated from its waterline length.
How much does a Dufour 52 weigh?
The Dufour 52 has a displacement of 33,636 and a length overall (LOA) of 50.25.
Who designed the Dufour 52?
The Dufour 52 was designed by Umberto Felci, first built in 2017.