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Swan 66 S
Designer: German Frers  ·  Builder: Nautor  ·  First built: 2006
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About the Swan 66 S

German Frers' design expertise shines through in this elegant 66-footer from Finland's renowned Nautor shipyard. Launched in 2006, this masthead sloop represents the perfect marriage of performance and luxury that has made the Swan brand synonymous with world-class sailing yachts. Built with a fin keel and spade rudder configuration, the Swan 66 S delivers exceptional sailing performance while maintaining the comfort expected from a premium cruising yacht. Her impressive sail area of 2,133 square feet and SA/Displacement ratio of 20.99 indicate a yacht capable of spirited sailing in light to moderate conditions, while the substantial ballast-to-displacement ratio ensures stability and sea-kindly behavior in challenging offshore conditions. The boat's moderate comfort ratio of 37.54 suggests good motion characteristics for extended passages, making her well-suited for serious blue-water cruising and occasional racing. With a theoretical hull speed exceeding 10 knots and robust fiberglass construction, she's designed to cover long distances efficiently and safely. Like all Swans, the 66 S combines Scandinavian build quality with Mediterranean styling, appealing to sailors who refuse to compromise between performance and luxury. Her capsize screening value of 1.75 reinforces her suitability for offshore sailing adventures.

Core Dimensions
LOA (Length Overall) 66.01 ft / 20.12 m
LWL (Waterline Length) 56.40 ft / 17.19 m
Beam 17.68 ft / 5.39 m
Max Draft 10.50 ft / 3.20 m
Displacement 66,000.00 lb / 29,937 kg
Ballast 20,720.00 lb / 9,398 kg
Ballast Type Lead
Sail Area (Reported) 2,133.00 ft² / 198.16 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer German Frers
Builder Nautor
First Built 2006
Related Sailboats Swan 65 Frers · Swan 68 · Cnb 66 · Oyster 675 · Baltic 64
Owner Reviews

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
 20.99
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 31.39
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
 164.23
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
 37.54
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
 1.75
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 10.06 kn
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
 3.68
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 3,562.93 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 20.99
Rig Dimensions
I (Foretriangle Height) 90.22 ft / 27.50 m
J (Foretriangle Base) 24.44 ft / 7.45 m
P (Mainsail Luff) 82.68 ft / 25.20 m
E (Mainsail Foot) 24.93 ft / 7.60 m
SA Fore 1,102.49 ft² / 102.42 m²
SA Main 1,030.61 ft² / 95.75 m²
SA Total (100%) 2,133.10 ft² / 198.17 m²
Est. Forestay Length 93.47 ft / 28.49 m
Engine & Accommodations
Engine Make Yanmar
Engine Type Diesel
Horsepower 163
Fuel Capacity 343 gals / 1,298 L
Water Capacity 333 gals / 1,261 L
How It Compares

vs. Baltic 64, Cnb 66, Oyster 675, Swan 65 Frers, Swan 68

This boat Similar boats
Dimensions
LOA
Swan 66 S ★
66.0 ft
Baltic 64
64.2 ft
Cnb 66
67.6 ft
Oyster 675
69.1 ft
Swan 65 Frers
66.0 ft
Swan 68
67.7 ft
LWL
Swan 66 S ★
56.4 ft
Baltic 64
50.5 ft
Cnb 66
60.5 ft
Oyster 675
60.1 ft
Swan 65 Frers
60.3 ft
Swan 68
54.7 ft
Beam
Swan 66 S ★
17.7 ft
Baltic 64
17.3 ft
Cnb 66
18.1 ft
Oyster 675
18.5 ft
Swan 65 Frers
18.4 ft
Swan 68
17.8 ft
Displacement
Swan 66 S ★
66 lbs
Baltic 64
56 lbs
Cnb 66
68 lbs
Oyster 675
82 lbs
Swan 65 Frers
60 lbs
Swan 68
88 lbs
Ballast
Swan 66 S ★
20 lbs
Baltic 64
24 lbs
Cnb 66
20 lbs
Oyster 675
—
Swan 65 Frers
14 lbs
Swan 68
35 lbs
Sail Area
Swan 66 S ★
2 sq ft
Baltic 64
1 sq ft
Cnb 66
2 sq ft
Oyster 675
—
Swan 65 Frers
—
Swan 68
—
Performance
SA / Displacement (higher = more powerful)
Swan 66 S ★
21.0
Baltic 64
19.9
Cnb 66
22.2
Oyster 675
—
Swan 65 Frers
—
Swan 68
—
Ballast / Disp (higher = stiffer)
Swan 66 S ★
31.4 %
Baltic 64
—
Cnb 66
—
Oyster 675
—
Swan 65 Frers
24.1 %
Swan 68
40.0 %
Comfort Ratio (higher = more comfortable offshore)
Swan 66 S ★
37.5
Baltic 64
35.7
Cnb 66
35.9
Oyster 675
—
Swan 65 Frers
—
Swan 68
—
Capsize Screening (lower = safer)
Swan 66 S ★
1.75
Baltic 64
1.81
Cnb 66
1.77
Oyster 675
—
Swan 65 Frers
—
Swan 68
—
Displacement / Length (lower = lighter)
Swan 66 S ★
164
Baltic 64
—
Cnb 66
—
Oyster 675
170
Swan 65 Frers
122
Swan 68
240
Hull Speed
Swan 66 S ★
10.1 kts
Baltic 64
9.5 kts
Cnb 66
10.4 kts
Oyster 675
—
Swan 65 Frers
—
Swan 68
—
Speed Number (higher = faster)
Swan 66 S ★
3.7
Baltic 64
3.1
Cnb 66
3.9
Oyster 675
—
Swan 65 Frers
—
Swan 68
—
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