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International Fj
Designer: Van Essen/Gulcher  ·  First built: 1956
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About the International Fj

Originally developed as a single-handed dinghy for junior sailors, this compact boat has earned its place as one of the most successful training platforms in sailing history. The FJ's design emphasizes simplicity and durability, making it an ideal choice for sailing programs and youth development initiatives worldwide. Built with a stable hull form and forgiving sailing characteristics, the FJ provides new sailors with a confidence-inspiring introduction to sailing fundamentals. Its single-handed configuration allows instructors to focus on individual skill development, while the boat's predictable handling helps students master basic techniques without being overwhelmed by complexity. The FJ's reputation extends far beyond beginner instruction, however. Many sailing programs use these boats for competitive racing, and the class maintains active racing circuits in numerous regions. The boat's standardized design ensures fair competition while keeping costs reasonable for clubs and sailing schools. Construction typically features robust fiberglass hulls designed to withstand the rigors of instructional use and frequent beach launching. The simple rig and straightforward systems make maintenance manageable for sailing programs operating multiple boats. For organizations seeking a proven training platform or individuals wanting an uncomplicated day sailor, the FJ represents decades of refined design focused on sailing education and enjoyment.

Core Dimensions
LOA (Length Overall) 13.22 ft / 4.03 m
LWL (Waterline Length) 12.25 ft / 3.73 m
Beam 5.25 ft / 1.60 m
Max Draft 2.50 ft / 0.76 m
Min Draft 0.58 ft / 0.18 m
Displacement 165.00 lb / 75 kg
Sail Area (Reported) 104.00 ft² / 9.66 m²
Design & Construction
Hull Type Centerboard Dinghy
Rigging Type Fractional Sloop
Construction Molded Plywood/FG
Designer Van Essen/Gulcher
First Built 1956
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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
55.35
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
2.23
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
3.83
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. 4.69
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. 229.8
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