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Allegro 33
Designer: Lars Olof Norlin  ·  Builder: Acva-Båt (Swe)  ·  First built: 1970
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About the Allegro 33

Designed by renowned Swedish naval architect Lars Olof Norlin and built by Acva-Båt from 1970 to 1985, this masthead sloop represents solid Scandinavian craftsmanship from an era when cruising boats prioritized seaworthiness over speed. With only 150 hulls produced during its 15-year production run, the Allegro 33 has become a relatively rare find in today's used boat market. The boat's long keel configuration and substantial ballast-to-displacement ratio create exceptional directional stability and a forgiving motion in heavy seas, making it well-suited for coastal cruising and offshore passages. The moderate sail area and masthead rig provide manageable sailing characteristics, while the fiberglass construction ensures durability with reasonable maintenance requirements. At 32 feet overall with a beam just under 11 feet, the Allegro 33 offers comfortable accommodations without excessive width. The impressive comfort ratio suggests this boat excels in rough conditions, while the conservative capsize screening number indicates excellent stability margins. Though not designed for racing, the hull generates respectable speeds for weekend cruising and longer voyages. This design appeals to sailors seeking a traditional, well-built cruiser capable of handling challenging conditions with confidence and predictability.

Core Dimensions
LOA (Length Overall) 32.18 ft / 9.81 m
LWL (Waterline Length) 28.94 ft / 8.82 m
Beam 10.93 ft / 3.33 m
Max Draft 4.92 ft / 1.50 m
Displacement 12,345.00 lb / 5,600 kg
Ballast 6,173.00 lb / 2,800 kg
Ballast Type Iron
Sail Area (Reported) 524.00 ft² / 48.68 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction FG
Designer Lars Olof Norlin
Builder ACVA-Båt (SWE)
First Built 1970
Last Built 1985
Number Built 150
Related Sailboats ["Contest 33" · "Laurin 32" · "Pearson 323" · "Cape Dory 32" · "Nicholson 33 34 Ton"]
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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
 15.75
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
 50
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
 227.38
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
 26.39
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
 1.9
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. 7.21 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
 2.27
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. 1,130.23 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. 15.75
Rig Dimensions
I (Foretriangle Height) 44.49 ft / 13.56 m
J (Foretriangle Base) 12.70 ft / 3.87 m
P (Mainsail Luff) 37.73 ft / 11.50 m
E (Mainsail Foot) 12.80 ft / 3.90 m
SA Fore 282.51 ft² / 26.25 m²
SA Main 241.47 ft² / 22.43 m²
SA Total (100%) 523.98 ft² / 48.68 m²
Est. Forestay Length 46.27 ft / 14.10 m
Engine & Accommodations
Engine Make Volvo Penta
Engine Model MD11C
Engine Type Diesel
How It Compares

vs. Cape Dory 32, Laurin 32, Pearson 323

This boat Similar boats
Dimensions
LOA
Allegro 33 ★
32.2 ft
Cape Dory 32
32.2 ft
Laurin 32
32.2 ft
Pearson 323
32.3 ft
LWL
Allegro 33 ★
28.9 ft
Cape Dory 32
24.2 ft
Laurin 32
28.2 ft
Pearson 323
27.5 ft
Beam
Allegro 33 ★
10.9 ft
Cape Dory 32
9.9 ft
Laurin 32
9.5 ft
Pearson 323
10.0 ft
Displacement
Allegro 33 ★
12 lbs
Cape Dory 32
11 lbs
Laurin 32
10 lbs
Pearson 323
12 lbs
Ballast
Allegro 33 ★
6 lbs
Cape Dory 32
4 lbs
Laurin 32
4 lbs
Pearson 323
4 lbs
Sail Area
Allegro 33 ★
524 sq ft
Cape Dory 32
509 sq ft
Laurin 32
514 sq ft
Pearson 323
477 sq ft
Performance
PHRF Rating (lower = faster)
Allegro 33 ★
—
Cape Dory 32
192 s/nm
Laurin 32
—
Pearson 323
174 s/nm
SA / Displacement (higher = more powerful)
Allegro 33 ★
15.8
Cape Dory 32
15.8
Laurin 32
17.6
Pearson 323
14.0
Ballast / Disp (higher = stiffer)
Allegro 33 ★
50.0 %
Cape Dory 32
40.0 %
Laurin 32
47.8 %
Pearson 323
35.2 %
Comfort Ratio (higher = more comfortable offshore)
Allegro 33 ★
26.4
Cape Dory 32
32.2
Laurin 32
26.8
Pearson 323
31.8
Capsize Screening (lower = safer)
Allegro 33 ★
1.90
Cape Dory 32
1.75
Laurin 32
1.75
Pearson 323
1.71
Displacement / Length (lower = lighter)
Allegro 33 ★
227
Cape Dory 32
371
Laurin 32
201
Pearson 323
274
Hull Speed
Allegro 33 ★
7.2 kts
Cape Dory 32
6.6 kts
Laurin 32
7.1 kts
Pearson 323
7.0 kts
Speed Number (higher = faster)
Allegro 33 ★
2.3
Cape Dory 32
1.2
Laurin 32
2.0
Pearson 323
1.7
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