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Dynamic 43
Designer: Jan Kjærulff  ·  Builder: Granada Yachts  ·  First built: 1985
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About the Dynamic 43

Danish designer Jan Kjærulff created the Dynamic 43 as a performance-oriented cruiser that entered production with Granada Yachts in 1985. This fractional sloop represents the era's emphasis on combining competitive sailing capabilities with comfortable cruising amenities. Built with fiberglass construction, the Dynamic 43 features a modern fin keel with bulb and spade rudder configuration that delivers excellent sailing performance. At 42.81 feet overall with a 34.78-foot waterline, she offers a generous sail area of 898 square feet that provides spirited performance in light to moderate conditions. The hull speed of 7.90 knots and sail area to displacement ratio of 25.78 indicate this yacht favors performance over heavy-weather comfort. With a displacement of 13,228 pounds and ballast of 6,393 pounds, the Dynamic 43 achieves a favorable ballast-to-displacement ratio that contributes to her sailing prowess. The relatively low comfort ratio of 22.15 suggests she's better suited for coastal cruising and club racing rather than extended offshore passages, while the capsize screening formula of 1.89 indicates reasonable stability for her intended use. This yacht appeals to sailors seeking a responsive platform for weekend cruising and competitive sailing in protected waters.

Core Dimensions
LOA (Length Overall) 42.81 ft / 13.05 m
LWL (Waterline Length) 34.78 ft / 10.60 m
Beam 11.15 ft / 3.40 m
Max Draft 6.17 ft / 1.88 m
Displacement 13,228.00 lb / 6,000 kg
Ballast 6,393.00 lb / 2,900 kg
Sail Area (Reported) 898.00 ft² / 83.43 m²
Design & Construction
Hull Type Fin w/bulb & spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Jan Kjærulff
Builder Granada Yachts
First Built 1985
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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
 25.78
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
 48.33
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
 140.36
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
 22.15
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
 1.89
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. 7.90 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
 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. 1,385.64 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. 25.78
Rig Dimensions
I (Foretriangle Height) 49.21 ft / 15.00 m
J (Foretriangle Base) 15.75 ft / 4.80 m
P (Mainsail Luff) 54.13 ft / 16.50 m
E (Mainsail Foot) 18.86 ft / 5.75 m
SA Fore 387.53 ft² / 36.00 m²
SA Main 510.45 ft² / 47.42 m²
SA Total (100%) 897.98 ft² / 83.43 m²
Est. Forestay Length 51.67 ft / 15.75 m
Engine & Accommodations
Engine Make Volvo Penta
Engine Model 2003/120S
Engine Type Diesel
Fuel Capacity 21 gals / 79 L
Water Capacity 26 gals / 98 L
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