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Sailboat Specifications

Swan 391

Masthead Sloop · Fin W/Spade Rudder

Designed by Ron Holland · Built by Nautor · First built 1981

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LOA 39.92 ft  ·  Beam 12.42 ft  ·  Displacement 18,900.00 lb  ·  Sail Area 767.00 ft²  ·  Masthead Sloop  ·  Fin W/Spade Rudder
About the Swan 391 Sailboat

Crafted by the renowned Finnish boatbuilder Nautor's Swan, the Swan 391 carries the hallmark pedigree that has made the Swan name synonymous with exceptional quality, elegant design, and offshore performance. As part of Nautor's celebrated lineup, this model reflects the brand's longstanding commitment to building sailboats that are equally at home on a bluewater passage as they are cruising along a scenic coastline. The Swan 391 is designed for the serious sailing enthusiast who refuses to compromise between performance and comfort. True to Swan's philosophy, the boat is built to a high standard of fit and finish, with a hull and deck designed to handle challenging conditions with confidence. Owners can expect responsive handling, a well-balanced sail plan, and the kind of seakeeping ability that inspires trust on longer passages. Whether used for spirited coastal sailing, weekend cruising with family, or more ambitious offshore voyaging, the Swan 391 delivers a refined experience that holds its value both on the water and in the resale market. For buyers seeking a boat with genuine heritage and lasting quality, it remains a compelling choice.

Dimensions & Specifications
LOA (Length Overall) 39.92 ft / 12.17 m
LWL (Waterline Length) 33.08 ft / 10.08 m
Beam 12.42 ft / 3.79 m
Max Draft 7.20 ft / 2.19 m
Displacement 18,900.00 lb / 8,573 kg
Ballast 6,800.00 lb / 3,084 kg
Sail Area (Reported) 767.00 ft² / 71.26 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Ron Holland
Builder Nautor
First Built 1981
Last Built 1987
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Frequently Asked Questions

What is the Swan 391's sail area to displacement ratio?

The Swan 391 has a Sail Area to Displacement ratio (SA/D) of 17.36. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Swan 391's comfort ratio?

The Swan 391 has a Ted Brewer Comfort Ratio of 29.02. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Swan 391 safe for offshore sailing?

The Swan 391 has a Capsize Screening Formula value of 1.87. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Swan 391?

The theoretical hull speed of the Swan 391 is 7.71 knots, calculated from its waterline length.

How much does a Swan 391 weigh?

The Swan 391 has a displacement of 18,900.00 lb and a length overall (LOA) of 39.92 ft.

Who designed the Swan 391?

The Swan 391 was designed by Ron Holland, first built in 1981.