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Finn Flyer 31
Designer: Eivind Still  ·  Builder: Polar Yacht  ·  First built: 1980
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About the Finn Flyer 31

Despite limited documentation in modern boat databases, the Finn Flyer 31 represents an intriguing chapter in sailboat design that merits attention from discerning sailors researching performance-oriented cruising vessels. This 31-foot sailboat appears to have been crafted during an era when builders prioritized sailing characteristics over pure accommodation volume. The Finn Flyer designation suggests Scandinavian design influences, which typically emphasize seaworthiness, clean lines, andrespectable performance across various wind conditions. Given the 31-foot length, this boat likely strikes a compelling balance between coastal cruising comfort and racing potential, making it suitable for weekend adventures and club racing scenarios. Without extensive specification sheets to reference, the Finn Flyer 31's appeal lies in its apparent focus on sailing quality rather than maximum interior space. This philosophy resonates with sailors who prioritize boat handling and performance over elaborate cabin amenities. The relative scarcity of detailed information actually adds to its mystique among boat enthusiasts who appreciate discovering lesser-known gems in the used boat market. For sailors seeking a distinctive cruiser-racer with probable Scandinavian design sensibilities, the Finn Flyer 31 warrants serious investigation despite its enigmatic documentation status.

Core Dimensions
LOA (Length Overall) 30.84 ft / 9.40 m
LWL (Waterline Length) 24.80 ft / 7.56 m
Beam 10.50 ft / 3.20 m
Max Draft 5.80 ft / 1.77 m
Displacement 7,260.00 lb / 3,293 kg
Ballast 2,425.00 lb / 1,100 kg
Sail Area (Reported) 413.00 ft² / 38.37 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Eivind Still
Builder Polar Yacht
First Built 1980
Last Built 1990
Owner Reviews

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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
162
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
17.68
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
18.4
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
2.17
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. 6.67
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
2.64
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. 930.44
Rig Dimensions
I (Foretriangle Height) 33.5
J (Foretriangle Base) 10.3
P (Mainsail Luff) 37.0
E (Mainsail Foot) 13.0
SA Fore 172.53
SA Main 240.5
How It Compares

vs. Dehler 31, Ericson 31 Independence, Farr 30 Mumm 30, Hallberg Rassy 312, Noelex 30

This boat Similar boats
Dimensions
LOA
Finn Flyer 31 ★
30.8 ft
Dehler 31
30.8 ft
Ericson 31 Independence
30.9 ft
Farr 30 Mumm 30
30.9 ft
Hallberg Rassy 312
30.9 ft
Noelex 30
30.9 ft
LWL
Finn Flyer 31 ★
24.8 ft
Dehler 31
24.3 ft
Ericson 31 Independence
23.9 ft
Farr 30 Mumm 30
27.6 ft
Hallberg Rassy 312
25.3 ft
Noelex 30
26.8 ft
Beam
Finn Flyer 31 ★
10.5 ft
Dehler 31
10.2 ft
Ericson 31 Independence
10.4 ft
Farr 30 Mumm 30
10.1 ft
Hallberg Rassy 312
10.1 ft
Noelex 30
9.4 ft
Displacement
Finn Flyer 31 ★
7 lbs
Dehler 31
7 lbs
Ericson 31 Independence
11 lbs
Farr 30 Mumm 30
4 lbs
Hallberg Rassy 312
10 lbs
Noelex 30
4 lbs
Ballast
Finn Flyer 31 ★
2 lbs
Dehler 31
2 lbs
Ericson 31 Independence
4 lbs
Farr 30 Mumm 30
1 lbs
Hallberg Rassy 312
4 lbs
Noelex 30
1 lbs
Sail Area
Finn Flyer 31 ★
413 sq ft
Dehler 31
443 sq ft
Ericson 31 Independence
Farr 30 Mumm 30
504 sq ft
Hallberg Rassy 312
484 sq ft
Noelex 30
410 sq ft
Performance
PHRF Rating (lower = faster)
Finn Flyer 31 ★
162 s/nm
Dehler 31
162 s/nm
Ericson 31 Independence
Farr 30 Mumm 30
Hallberg Rassy 312
Noelex 30
119 s/nm
SA / Displacement (higher = more powerful)
Finn Flyer 31 ★
17.7
Dehler 31
19.3
Ericson 31 Independence
Farr 30 Mumm 30
29.4
Hallberg Rassy 312
15.9
Noelex 30
25.6
Ballast / Disp (higher = stiffer)
Finn Flyer 31 ★
Dehler 31
Ericson 31 Independence
39.5 %
Farr 30 Mumm 30
43.8 %
Hallberg Rassy 312
Noelex 30
31.4 %
Comfort Ratio (higher = more comfortable offshore)
Finn Flyer 31 ★
18.4
Dehler 31
18.9
Ericson 31 Independence
Farr 30 Mumm 30
11.3
Hallberg Rassy 312
28.5
Noelex 30
11.5
Capsize Screening (lower = safer)
Finn Flyer 31 ★
2.17
Dehler 31
2.12
Ericson 31 Independence
Farr 30 Mumm 30
2.44
Hallberg Rassy 312
1.83
Noelex 30
2.34
Displacement / Length (lower = lighter)
Finn Flyer 31 ★
Dehler 31
Ericson 31 Independence
371
Farr 30 Mumm 30
96
Hallberg Rassy 312
Noelex 30
95
Hull Speed
Finn Flyer 31 ★
6.7 kts
Dehler 31
6.6 kts
Ericson 31 Independence
Farr 30 Mumm 30
7.0 kts
Hallberg Rassy 312
6.7 kts
Noelex 30
6.9 kts
Speed Number (higher = faster)
Finn Flyer 31 ★
2.6
Dehler 31
2.7
Ericson 31 Independence
Farr 30 Mumm 30
6.2
Hallberg Rassy 312
1.6
Noelex 30
5.7
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