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Ansa 47
Designer: Ocke Mannerfelt  ·  Builder: Ansa Sailing Ab (Swe)  ·  First built: 1984
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About the Ansa 47

Swedish designer Ocke Mannerfelt created this capable offshore cruiser for Ansa Sailing Ab in 1984, combining Scandinavian build quality with practical sailing characteristics. The 46-foot design features a modern fin keel and spade rudder configuration that delivers responsive handling while maintaining directional stability in challenging conditions. With a displacement of 26,000 pounds and substantial ballast ratio, this fractional sloop offers the stability and sea-kindly motion that serious cruising sailors appreciate. The 8-foot draft provides excellent upwind performance while still allowing access to most harbors, making it versatile for both coastal exploration and longer passages. The hull's 36.42-foot waterline length contributes to a theoretical hull speed of 8.09 knots, respectable for extended cruising. The boat's comfort ratio of 33.05 indicates a motion that favors seaworthiness over extreme speed, while the capsize screening value of 1.78 suggests good stability for offshore work. The 1,150 square feet of sail area provides adequate power without being overwhelming for a small crew. This Swedish-built yacht represents solid construction values from an era when European builders emphasized durability and sailing performance over interior volume, making it an attractive option for sailors seeking a proven offshore platform.

Core Dimensions
LOA (Length Overall) 46.00 ft / 14.02 m
LWL (Waterline Length) 36.42 ft / 11.10 m
Beam 13.16 ft / 4.01 m
Max Draft 8.00 ft / 2.44 m
Displacement 26,000.00 lb / 11,793 kg
Ballast 12,350.00 lb / 5,602 kg
Sail Area (Reported) 1,150.00 ft² / 106.84 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Ocke Mannerfelt
Builder Ansa Sailing AB (SWE)
First Built 1984
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
 21.05
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
 47.5
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
 240.27
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
 33.05
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
 1.78
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. 8.09 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. 1,712.55 pounds/inch
Engine & Accommodations
Engine Make Volvo Penta
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