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Amigo 40
Designer: Carl Andersson  ·  Builder: Arne Arksunds (Swe)  ·  First built: 1961
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About the Amigo 40

Designed by Carl Andersson and built by Sweden's Arne Arksunds beginning in 1961, this classic Scandinavian cruiser represents traditional European yacht design philosophy with its emphasis on seaworthiness and comfort. With only 48 hulls produced, the Amigo 40 remains a rare find among vintage fiberglass sailboats. The yacht's substantial displacement of 12,125 pounds and generous ballast ratio create exceptional stability, while the long keel configuration with transom-hung rudder delivers predictable handling characteristics that inspire confidence in challenging conditions. Her masthead sloop rig provides versatile sail handling options, and the moderate sail area-to-displacement ratio of 12.93 suggests balanced performance that favors reliability over pure speed. Built for serious cruising rather than racing, this design excels at offshore passages where her impressive comfort ratio of 31.58 translates to gentle motion in seaways. The conservative capsize screening value of 1.75 indicates excellent stability margins suitable for extended coastal and offshore cruising. Her hull speed of 6.87 knots provides respectable passage-making capability while maintaining the forgiving sailing characteristics that made Scandinavian designs legendary among blue-water sailors seeking dependable, comfortable cruising platforms.

Core Dimensions
LOA (Length Overall) 30.71 ft / 9.36 m
LWL (Waterline Length) 26.25 ft / 8.00 m
Beam 10.01 ft / 3.05 m
Max Draft 4.92 ft / 1.50 m
Displacement 12,125.00 lb / 5,500 kg
Ballast 5,732.00 lb / 2,600 kg
Ballast Type Cast iron
Sail Area (Reported) 425.00 ft² / 39.48 m²
Design & Construction
Hull Type Long keel w/trans. hung rudder
Rigging Type Masthead Sloop
Construction FG
Designer Carl Andersson
Builder Arne Arksunds (SWE)
First Built 1961
Number Built 48
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
 12.93
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
 47.27
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
 299.26
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
 31.58
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. 6.87 kn
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. 938.88 pounds/inch
Engine & Accommodations
Engine Make Volvo Penta
Engine Model 2003
Engine Type Diesel
Fuel Capacity 21 gals / 79 L
Water Capacity 53 gals / 201 L
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