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Allegro 39

Designer: Lars Olof Norlin  ·  Builder: Allegro Marin Ab (Swe)  ·  First built: 1989
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About the Allegro 39

Designed by renowned Swedish naval architect Lars Olof Norlin and built by Allegro Marin Ab beginning in 1989, this 39-footer represents solid Scandinavian cruising philosophy with a focus on seaworthiness and comfort. The masthead ketch rig provides excellent sail handling options for shorthanded sailing, while the traditional long keel configuration delivers the kind of directional stability and sea-kindly motion that makes for relaxed offshore passages. With a displacement of over 20,000 pounds and nearly 9,000 pounds of ballast, this substantial cruiser prioritizes stability and load-carrying capacity over pure performance. The generous beam of just over 13 feet creates spacious accommodations below, while the moderate draft allows access to a reasonable range of harbors without sacrificing the tracking ability that long-keel designs are known for. The boat's comfort ratio of 28.66 indicates a motion that favors easy living aboard, making it well-suited for extended cruising rather than racing. Combined with a capsize screening value of 1.91, these numbers suggest a design intended for serious offshore work where safety margins and crew comfort take precedence over speed. This makes the Allegro 39 particularly appealing to couples or small crews planning extended coastal cruising or ocean passages.

Core Dimensions
LOA (Length Overall) 39.34 ft / 11.99 m
LWL (Waterline Length) 35.10 ft / 10.70 m
Beam 13.09 ft / 3.99 m
Max Draft 5.97 ft / 1.82 m
Displacement 20,723.00 lb / 9,400 kg
Ballast 9,039.00 lb / 4,100 kg
Sail Area (Reported) 774.00 ft² / 71.91 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Ketch
Construction FG
Designer Lars Olof Norlin
Builder Allegro Marin AB (SWE)
First Built 1989
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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
16.48
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
43.62
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
213.94
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
28.66
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
1.91
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. 7.94 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. 1,641.70 pounds/inch
Engine & Accommodations
Engine Make Volvo Penta
Engine Type Diesel
Fuel Capacity 40 gals / 151 L
Water Capacity 53 gals / 201 L
How It Compares

vs. Dufour 39 Cc, Oceanis 393 Beneteau, Passport 40, Pearson 39 2, Valiant 39

This boat Similar boats
Dimensions
LOA
Allegro 39 ★
39.3 ft
Dufour 39 Cc
39.3 ft
Oceanis 393 Beneteau
39.4 ft
Passport 40
39.4 ft
Pearson 39 2
39.3 ft
Valiant 39
39.3 ft
LWL
Allegro 39 ★
35.1 ft
Dufour 39 Cc
31.8 ft
Oceanis 393 Beneteau
33.1 ft
Passport 40
33.4 ft
Pearson 39 2
31.3 ft
Valiant 39
32.0 ft
Beam
Allegro 39 ★
13.1 ft
Dufour 39 Cc
12.6 ft
Oceanis 393 Beneteau
13.1 ft
Passport 40
12.7 ft
Pearson 39 2
12.4 ft
Valiant 39
11.5 ft
Displacement
Allegro 39 ★
20 lbs
Dufour 39 Cc
15 lbs
Oceanis 393 Beneteau
17 lbs
Passport 40
22 lbs
Pearson 39 2
16 lbs
Valiant 39
18 lbs
Ballast
Allegro 39 ★
9 lbs
Dufour 39 Cc
4 lbs
Oceanis 393 Beneteau
6 lbs
Passport 40
8 lbs
Pearson 39 2
6 lbs
Valiant 39
7 lbs
Sail Area
Allegro 39 ★
774 sq ft
Dufour 39 Cc
Oceanis 393 Beneteau
720 sq ft
Passport 40
762 sq ft
Pearson 39 2
Valiant 39
Performance
PHRF Rating (lower = faster)
Allegro 39 ★
Dufour 39 Cc
Oceanis 393 Beneteau
Passport 40
141 s/nm
Pearson 39 2
132 s/nm
Valiant 39
SA / Displacement (higher = more powerful)
Allegro 39 ★
16.5
Dufour 39 Cc
Oceanis 393 Beneteau
17.3
Passport 40
15.2
Pearson 39 2
Valiant 39
Ballast / Disp (higher = stiffer)
Allegro 39 ★
43.6 %
Dufour 39 Cc
29.0 %
Oceanis 393 Beneteau
35.3 %
Passport 40
37.3 %
Pearson 39 2
40.5 %
Valiant 39
37.8 %
Comfort Ratio (higher = more comfortable offshore)
Allegro 39 ★
28.7
Dufour 39 Cc
Oceanis 393 Beneteau
Passport 40
34.0
Pearson 39 2
Valiant 39
Capsize Screening (lower = safer)
Allegro 39 ★
1.91
Dufour 39 Cc
Oceanis 393 Beneteau
Passport 40
1.79
Pearson 39 2
Valiant 39
Displacement / Length (lower = lighter)
Allegro 39 ★
213
Dufour 39 Cc
217
Oceanis 393 Beneteau
210
Passport 40
272
Pearson 39 2
245
Valiant 39
252
Hull Speed
Allegro 39 ★
7.9 kts
Dufour 39 Cc
Oceanis 393 Beneteau
Passport 40
7.8 kts
Pearson 39 2
Valiant 39
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