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Sailboat Specifications

Swan 411

Masthead Sloop · Fin With Rudder On Skeg

Designed by Sparkman & Stephens · Built by Nautor · First built 1977

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LOA 40.81 ft  ·  Beam 11.94 ft  ·  Displacement 23,800.00 lb  ·  Sail Area 873.00 ft²  ·  Masthead Sloop  ·  Fin With Rudder On Skeg
About the Swan 411 Sailboat

Designed by the legendary Sparkman & Stephens and built by Finland's prestigious Nautor yard, this classic Swan represents the epitome of 1970s yacht design excellence. With just 42 hulls produced between 1977 and 1979, the Swan 411 stands as a relatively rare and sought-after example of the builder's renowned craftsmanship. At 40.81 feet overall with a moderate 23,800-pound displacement, this masthead sloop strikes an ideal balance between performance and comfort. The fin keel with rudder on skeg configuration provides excellent directional stability while maintaining responsive handling characteristics. Her substantial ballast ratio of over 40 percent ensures impressive stability and seaworthiness in challenging conditions. The Swan 411 excels as a serious offshore cruiser, equally capable of extended passages and spirited coastal sailing. Her moderate sail-area-to-displacement ratio delivers respectable performance without sacrificing the controllability that makes long-distance cruising manageable for smaller crews. The comfort ratio of 37.86 indicates a boat that won't slam in a seaway, while the capsize screening value of 1.66 confirms her blue-water credentials. True to Swan's reputation, this model combines elegant aesthetics with robust fiberglass construction, making it an excellent choice for discerning sailors seeking a proven offshore cruiser with timeless appeal.

Dimensions & Specifications
LOA (Length Overall) 40.81 ft / 12.44 m
LWL (Waterline Length) 33.56 ft / 10.23 m
Beam 11.94 ft / 3.64 m
Max Draft 7.50 ft / 2.29 m
Displacement 23,800.00 lb / 10,795 kg
Ballast 9,700.00 lb / 4,400 kg
Ballast Type Lead
Sail Area (Reported) 873.00 ft² / 81.10 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Sparkman & Stephens
Builder Nautor
First Built 1977
Last Built 1979
Number Built 42
Related Sailboats J/40 · Cc 41 · Aurora 40 · Farr 40 One Design · Morris 40
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Engine & Accommodations
Engine Make Perkins
Engine Model 4.108 M
Engine Type Diesel
Horsepower 47
Fuel Capacity 34 gals / 129 L
Water Capacity 66 gals / 250 L
Frequently Asked Questions

What is the Swan 411's sail area to displacement ratio?

The Swan 411 has a Sail Area to Displacement ratio (SA/D) of 16.95. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Swan 411's comfort ratio?

The Swan 411 has a Ted Brewer Comfort Ratio of 37.86. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Swan 411 safe for offshore sailing?

The Swan 411 has a Capsize Screening Formula value of 1.66. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Swan 411?

The theoretical hull speed of the Swan 411 is 7.76 kn knots, calculated from its waterline length.

How much does a Swan 411 weigh?

The Swan 411 has a displacement of 23,800.00 lb and a length overall (LOA) of 40.81 ft.

Who designed the Swan 411?

The Swan 411 was designed by Sparkman & Stephens, first built in 1977.