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Dynamic 37
Designer: Jan Kjærulff  ·  Builder: Bianca Yachts  ·  First built: 1986
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About the Dynamic 37

Danish designer Jan Kjærulff created this capable 37-footer for Bianca Yachts in 1986, delivering a well-balanced cruising sailboat that exemplifies Scandinavian design principles. With its moderate displacement of 11,023 pounds and substantial ballast ratio, the Dynamic 37 offers reassuring stability for coastal and offshore passages. The fractional sloop rig provides excellent sail handling characteristics, while the fin keel with bulb and spade rudder configuration delivers responsive performance both under sail and when maneuvering in tight quarters. At 700 square feet of sail area, the boat carries sufficient canvas for spirited sailing without becoming overpowering for a small crew. Notable for its comfortable motion at sea, the Dynamic 37's comfort ratio of 20.77 indicates this yacht prioritizes seaworthiness over pure speed, making it an excellent choice for extended cruising. The capsize screening value of 2.06 falls within acceptable ranges for offshore work, though the design clearly favors stability and comfort over extreme performance. Fiberglass construction ensures durability and relatively low maintenance, while the 11.45-foot beam provides generous interior volume. This Danish design represents solid European craftsmanship from an era when builders emphasized seaworthiness and long-term reliability over racing-oriented features.

Core Dimensions
LOA (Length Overall) 37.40 ft / 11.40 m
LWL (Waterline Length) 29.53 ft / 9.00 m
Beam 11.45 ft / 3.49 m
Max Draft 6.23 ft / 1.90 m
Displacement 11,023.00 lb / 5,000 kg
Ballast 4,960.00 lb / 2,250 kg
Ballast Type Lead
Sail Area (Reported) 700.00 ft² / 65.03 m²
Design & Construction
Hull Type Fin w/bulb & spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Jan Kjærulff
Builder Bianca Yachts
First Built 1986
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
22.69
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
45
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
191.1
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
20.77
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
2.06
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. 7.28 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
3.35
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. 1,208.13 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. 21.71
Rig Dimensions
I (Foretriangle Height) 42.65 ft / 13.00 m
J (Foretriangle Base) 13.12 ft / 4.00 m
P (Mainsail Luff) 47.57 ft / 14.50 m
E (Mainsail Foot) 16.40 ft / 5.00 m
SA Fore 279.78 ft² / 25.99 m²
SA Main 390.07 ft² / 36.24 m²
SA Total (100%) 669.85 ft² / 62.23 m²
Est. Forestay Length 44.62 ft / 13.60 m
Engine & Accommodations
Engine Make Volvo Penta
Engine Model 2003/120S
Engine Type Diesel
Fuel Capacity 21 gals / 79 L
Water Capacity 21 gals / 79 L
How It Compares

vs. Cr 360 370, Hanse 385, Impala 36 Jensen, Scanner 392, X 372 Sport

This boat Similar boats
Dimensions
LOA
Dynamic 37 ★
37.4 ft
Cr 360 370
36.4 ft
Hanse 385
37.4 ft
Impala 36 Jensen
36.1 ft
Scanner 392
39.1 ft
X 372 Sport
37.0 ft
LWL
Dynamic 37 ★
29.5 ft
Cr 360 370
32.0 ft
Hanse 385
34.1 ft
Impala 36 Jensen
30.2 ft
Scanner 392
31.5 ft
X 372 Sport
29.5 ft
Beam
Dynamic 37 ★
11.5 ft
Cr 360 370
11.9 ft
Hanse 385
12.7 ft
Impala 36 Jensen
11.8 ft
Scanner 392
11.8 ft
X 372 Sport
11.7 ft
Displacement
Dynamic 37 ★
11 lbs
Cr 360 370
14 lbs
Hanse 385
16 lbs
Impala 36 Jensen
11 lbs
Scanner 392
13 lbs
X 372 Sport
11 lbs
Ballast
Dynamic 37 ★
4 lbs
Cr 360 370
6 lbs
Hanse 385
4 lbs
Impala 36 Jensen
4 lbs
Scanner 392
5 lbs
X 372 Sport
4 lbs
Sail Area
Dynamic 37 ★
700 sq ft
Cr 360 370
Hanse 385
724 sq ft
Impala 36 Jensen
635 sq ft
Scanner 392
X 372 Sport
667 sq ft
Performance
SA / Displacement (higher = more powerful)
Dynamic 37 ★
22.7
Cr 360 370
Hanse 385
17.8
Impala 36 Jensen
19.8
Scanner 392
X 372 Sport
21.3
Ballast / Disp (higher = stiffer)
Dynamic 37 ★
45.0 %
Cr 360 370
43.0 %
Hanse 385
29.0 %
Impala 36 Jensen
41.5 %
Scanner 392
40.2 %
X 372 Sport
43.1 %
Comfort Ratio (higher = more comfortable offshore)
Dynamic 37 ★
20.8
Cr 360 370
Hanse 385
24.9
Impala 36 Jensen
21.1
Scanner 392
X 372 Sport
20.6
Capsize Screening (lower = safer)
Dynamic 37 ★
2.06
Cr 360 370
Hanse 385
1.99
Impala 36 Jensen
2.09
Scanner 392
X 372 Sport
2.10
Displacement / Length (lower = lighter)
Dynamic 37 ★
191
Cr 360 370
192
Hanse 385
188
Impala 36 Jensen
189
Scanner 392
192
X 372 Sport
195
Hull Speed
Dynamic 37 ★
7.3 kts
Cr 360 370
Hanse 385
7.8 kts
Impala 36 Jensen
7.4 kts
Scanner 392
X 372 Sport
7.3 kts
Speed Number (higher = faster)
Dynamic 37 ★
3.4
Cr 360 370
Hanse 385
2.9
Impala 36 Jensen
Scanner 392
X 372 Sport
3.3
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