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Delta 31 Albin
Designer: Peter Norlin  ·  Builder: Albin Marine (Swe)  ·  First built: 1983
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About the Delta 31 Albin

With limited documentation available, the Delta 31 Albin represents one of the more obscure entries in the 31-foot sailboat category from the Swedish boatbuilder Albin Marine. This vessel appears to have been produced during Albin's era of fiberglass sailboat manufacturing, when the company was diversifying beyond their traditional motor yacht offerings. Based on Albin's typical construction standards of the period, the Delta 31 likely features solid fiberglass construction with practical cruising amenities suited for coastal sailing and extended weekend adventures. Swedish builders of this era were known for prioritizing seaworthiness and interior comfort over pure performance, suggesting this boat would appeal to cruising sailors rather than racing enthusiasts. The scarcity of detailed information about the Delta 31 indicates it was likely produced in limited numbers, making it a relatively rare find in today's used boat market. For prospective buyers, this rarity could present both opportunities and challenges - potentially offering good value for those seeking a well-built cruiser, while also making parts availability and maintenance expertise more difficult to source compared to more common production sailboats from the same period.

Core Dimensions
LOA (Length Overall) 30.68 ft / 9.35 m
LWL (Waterline Length) 24.93 ft / 7.60 m
Beam 9.97 ft / 3.04 m
Max Draft 5.90 ft / 1.80 m
Displacement 8,598.00 lb / 3,900 kg
Ballast 3,505.00 lb / 1,590 kg
Ballast Type Iron
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Peter Norlin
Builder Albin Marine (SWE)
First Built 1983
Last Built 1986
Number Built 300
Owner Reviews

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Performance Ratios
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
40.77
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
247.73
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. 5.33 pounds/inch
Rig Dimensions
I (Foretriangle Height) 16.68
J (Foretriangle Base) 11.15 ft / 3.40 m
P (Mainsail Luff) 436.00 ft² / 40.51 m²
E (Mainsail Foot) Yanmar
Engine & Accommodations
Horsepower 8
How It Compares

vs. Dehler 31, Etap 32I, Pearson 31 2

This boat Similar boats
Dimensions
LOA
Delta 31 Albin ★
30.7 ft
Dehler 31
30.8 ft
Etap 32I
30.7 ft
Pearson 31 2
30.7 ft
LWL
Delta 31 Albin ★
24.9 ft
Dehler 31
24.3 ft
Etap 32I
26.3 ft
Pearson 31 2
25.4 ft
Beam
Delta 31 Albin ★
10.0 ft
Dehler 31
10.2 ft
Etap 32I
11.2 ft
Pearson 31 2
10.7 ft
Displacement
Delta 31 Albin ★
8 lbs
Dehler 31
7 lbs
Etap 32I
9 lbs
Pearson 31 2
10 lbs
Ballast
Delta 31 Albin ★
3 lbs
Dehler 31
2 lbs
Etap 32I
2 lbs
Pearson 31 2
3 lbs
Sail Area
Delta 31 Albin ★
Dehler 31
443 sq ft
Etap 32I
588 sq ft
Pearson 31 2
493 sq ft
Performance
PHRF Rating (lower = faster)
Delta 31 Albin ★
Dehler 31
162 s/nm
Etap 32I
Pearson 31 2
180 s/nm
SA / Displacement (higher = more powerful)
Delta 31 Albin ★
Dehler 31
19.3
Etap 32I
20.7
Pearson 31 2
17.1
Ballast / Disp (higher = stiffer)
Delta 31 Albin ★
40.8 %
Dehler 31
Etap 32I
29.4 %
Pearson 31 2
38.0 %
Comfort Ratio (higher = more comfortable offshore)
Delta 31 Albin ★
Dehler 31
18.9
Etap 32I
21.9
Pearson 31 2
24.5
Capsize Screening (lower = safer)
Delta 31 Albin ★
Dehler 31
2.12
Etap 32I
2.10
Pearson 31 2
1.98
Displacement / Length (lower = lighter)
Delta 31 Albin ★
247
Dehler 31
Etap 32I
240
Pearson 31 2
271
Hull Speed
Delta 31 Albin ★
Dehler 31
6.6 kts
Etap 32I
6.9 kts
Pearson 31 2
6.8 kts
Speed Number (higher = faster)
Delta 31 Albin ★
Dehler 31
2.7
Etap 32I
2.2
Pearson 31 2
2.0
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