The Finn Flyer 31 represents a pivotal era in Nordic yacht design, emerging from the drafting board of the renowned naval architect Eivind Still during the height of the IOR (International Offshore Rule) influence. Launched in the early 1980s and produced into the early 1990s, the model was conceived as a high-performance cruiser that could compete effectively in the Half-Ton class while providing the amenities required for family coastal cruising. Built in Finland, the vessel reflects the region’s heritage of robust construction and meticulous joinery, a tradition maintained today by Finn Flyer Marina. The 31 was the successor to the earlier Finn Flyer 27 and preceded the more modern 32 and 34-foot variants, serving as the backbone of the brand's reputation for speed and sea-kindliness in the Baltic and beyond.
Finn Flyer 31 Information, Review, Specs

- Make
- Finn Flyer
- Model
- 31
- Builder
- Finn Flyer Marina AB. (FI)
- Designer
- Eivind Still
- Number Built
- Production Year(s)
- 1980 - 1990
Sailing Performance & Handling
The Finn Flyer 31 is defined by its pedigree as an offshore racer-cruiser. With a fractional rig and a high-aspect ratio sail plan, the boat is optimized for upwind performance, a hallmark of Eivind Still’s design philosophy. The hull features the moderate displacement and relatively narrow beam characteristic of 1980s Finnish designs, allowing it to slice through a short chop with minimal slamming. Owners often report that the boat feels exceptionally "stiff" due to a generous ballast ratio, often exceeding 40%, which translates to a high degree of stability even when the wind increases.
Under sail, the 31 exhibits a sensitive helm that provides immediate feedback, making it an engaging platform for sailors who enjoy fine-tuning trim. While the IOR-influenced hull shape—featuring a slight bustle in the aft sections—can become lively when running deep downwind in heavy seas, the deep fin keel and large rudder provide sufficient tracking for controlled reaches. According to historical technical summaries from Finnish marine publications like Vene Magazine, the 31 was noted for its ability to outperform much larger yachts in light-to-moderate air, thanks to its relatively low wetted surface area and efficient sail plan.
Interior Comfort & Variations
Inside, the Finn Flyer 31 showcases the high-standard cabinetry and ergonomic layout expected of a premium Scandinavian builder. The interior is typically finished in warm khaya mahogany or teak, with a focus on functional offshore utility. The standard layout includes a forward V-berth, a central salon with twin settees that double as sea berths, and a compact but efficient L-shaped galley to port. A dedicated navigation station is situated to starboard, adjacent to the head compartment.
A notable variant of the 31 is the "Club" or "Performance" version, which often featured a simplified interior to save weight for racing, whereas the cruising-oriented models prioritized additional storage and more elaborate headlining. The sibling models, particularly the Finn Flyer 27 and the later Finn Flyer 32 CR, utilized similar interior motifs, but the 31 was the first in the range to offer genuine standing headroom (approximately 1.85m) for the average adult, making it a viable long-term cruiser rather than just a weekend racer. The use of high-quality textiles and integrated handrails reflects a design intended for actual use at sea rather than just aesthetics at the dock.
Popular Mentions & Media
The Finn Flyer 31 gained significant regional fame in Northern Europe during the 1980s as a competitive force in the Half-Ton Cup and various Baltic regattas. It is frequently cited in Finnish sailing literature as one of the definitive "performance cruisers" of its decade. While it lacks the global Hollywood footprint of larger production brands, it remains a "cult classic" among Nordic sailors, often appearing in regional documentary segments about the evolution of Finnish boat building and the legacy of Eivind Still.
Known Issues & Buyer’s Checklist
Prospective buyers of a Finn Flyer 31 should focus on several age-related and design-specific areas during survey:
- Deck Core Integrity: Like many boats of this era, the 31 utilizes a balsa-cored sandwich construction for the deck. It is vital to check for delamination or moisture ingress, particularly around the chainplates, stanchion bases, and the mast step.
- Keel Attachment: Given its history as a racer, some hulls may have experienced groundings. Inspect the fiberglass around the aft and forward ends of the keel sump for stress cracks or "S-glass" repairs.
- Saildrive Diaphragm: Most units were originally equipped with Volvo Penta or Yanmar engines featuring saildrives. The rubber sealing diaphragm has a recommended replacement interval (usually 7 years); if the service history is unclear, this should be a priority replacement.
- Rigging Fatigue: The fractional rig puts significant tension on the backstay and forestay. Inspect the mast tangs and the internal reinforcement of the hull where the chainplates are anchored to the bulkheads.
- Rudder Bearings: The large spade rudder is prone to developing play in the bearings over decades of use. Check for "slop" in the helm while the boat is hauled out.
Community & Resources
The primary hub for technical information and community interaction is the Finn Flyer Marina AB, which continues to provide support for legacy models. Additionally, the Finnish "Still-veneet" (Still Boats) community and the H-Boat associations often overlap with Finn Flyer owners due to the shared designer. Technical drawings and historical brochures are occasionally archived by the Åland Islands maritime heritage groups, reflecting the boat's importance to the local maritime history of Mariehamn.
The Verdict
The Finn Flyer 31 remains a premier choice for the sailor who prioritizes performance and build quality over sheer interior volume. It is a "sailor's boat" that rewards active trimming and provides a sense of security in demanding conditions.
Pros:
- Exceptional upwind performance and pointing ability.
- Superior Finnish construction with high-quality interior joinery.
- Balanced handling and high stability for its size class.
- Classic, timeless aesthetic that has aged better than many of its contemporaries.
Cons:
- Interior volume is lower than modern 31-foot "caravan-style" cruisers.
- Aging balsa-cored decks require careful inspection for moisture.
- The IOR-influenced stern can be restless when running in a following sea.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Spade
- Ballast
- 2425 lbs
- Displacement
- 7260 lbs
- Water Capacity
- 132 gal
- Fuel Capacity
- 106 gal
Dimensions
- Length Overall (LOA)
- 30.84 ft
- Waterline Length (LWL)
- 24.8 ft
- Beam
- 10.5 ft
- Draft
- 5.8 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- 37 ft
- E (Main Foot)
- 13 ft
- I (Foretriangle Height)
- 33.5 ft
- J (Foretriangle Base)
- 10.3 ft
- Forestay Length (est)
- 35.05 ft
- Sail Area
- 413 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 17.62
- Ballast / Displacement Ratio
- 33.4
- Displacement / Length Ratio (D/L) Ratio
- 212.49
- Comfort Ratio
- 18.4
- Capsize Screening Formula
- 2.17
- Hull Speed
- 6.67 kn