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Herreshoff America
Designer: H. Herreshoff  ·  Builder: Nowak & Williams (Usa)  ·  First built: 1971
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About the Herreshoff America

Carrying the prestigious Herreshoff name, this compact 18-footer represents classic American design philosophy adapted for modern fiberglass construction. Built by Nowak & Williams starting in 1971, the America features the distinctive gaff-rigged catboat configuration that made the Herreshoff Manufacturing Company legendary among sailing enthusiasts. The centerboard trunk design provides versatility for shallow water exploration while maintaining good upwind performance, making this boat particularly well-suited for coastal cruising and daysailing in protected waters. With 260 square feet of sail area driving 2,500 pounds of displacement, the America offers spirited performance without being overwhelming for smaller crews or less experienced sailors. The gaff cat rig delivers the classic aesthetic and forgiving handling characteristics that catboats are renowned for, though sailors should expect the typical catboat behavior of being sensitive to weight distribution and requiring attention to sail trim. The relatively low ballast-to-displacement ratio suggests this design prioritizes initial stability and shallow draft capability over ultimate stiffness. The comfort ratio of 13.54 indicates a motion that favors performance over heavy-weather comfort, while the capsize screening value confirms this boat's intended role in protected waters rather than offshore passages. For sailors seeking traditional character with manageable size, the Herreshoff America offers an appealing blend of heritage design and practical day-sailing capability.

Core Dimensions
LOA (Length Overall) 18.16 ft / 5.54 m
LWL (Waterline Length) 17.75 ft / 5.41 m
Beam 8.00 ft / 2.44 m
Min Draft 1.83 ft / 0.56 m
Displacement 2,500.00 lb / 1,134 kg
Ballast 500.00 lb / 227 kg
Ballast Type Lead
Sail Area (Reported) 260.00 ft² / 24.15 m²
Design & Construction
Hull Type Centerboard (Trunk)
Rigging Type Gaff head Cat
Construction FG
Designer H. Herreshoff
Builder Nowak & Williams (USA)
First Built 1971
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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
22.64
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
20
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
199.57
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
13.54
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
2.36
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. 5.65 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. 507.38 pounds/inch
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