Designed by the prolific Swedish naval architect Einar Ohlson in 1964, the Ohlson 41 represents a pivotal transition in the evolution of offshore racing and cruising yachts. Originally conceived as a long-keel design, it was quickly refined into a modern fin-keel and skeg-hung rudder configuration, serving as the technical "blueprint" for a family of legendary blue-water vessels including the Ohlson 38, 44, and 45. While the Ohlson 38 saw widespread production, the 41 remained an exclusive, largely custom-to-order vessel with only approximately five hulls ever delivered. These yachts were constructed to exceptionally high standards by renowned yards such as Paul Molich in Denmark and Frans Maas in the Netherlands, using a variety of materials including edge-glued single planking, Corten steel, and GRP. The Ohlson 41 remains a rare prize among classic yacht collectors, celebrated for its blend of traditional Scandinavian aesthetics and the racing pedigree that defined the Ohlson Brothers’ Olympic legacy.
Ohlson 41 Information, Review, Specs

- Make
- Ohlson
- Model
- 41
- Builder
- —
- Designer
- Einar Ohlson
- Number Built
- 3
- Production Year(s)
- 1965 - ??
Sailing Performance & Handling
The Ohlson 41 is a thoroughbred offshore performer characterized by its high ballast-to-displacement ratio (estimated at 43%) and a remarkably slim hull profile. With a Length-to-Beam (L/B) ratio of approximately 3.71, the boat is significantly narrower than modern cruising designs, a trait that allows it to pierce through chop with minimal loss of momentum. Historical design notes from Ohlson Yachts indicate that the design thrived in heavy weather, maintaining control on reaching legs where its contemporaries often struggled.
Under sail, the 41 is known for being beautifully balanced and responsive, particularly when beating to windward in a moderate to fresh breeze. The transition from the original long-keel design to a "longish" fin keel and skeg-mounted rudder was a breakthrough for the era, providing a high degree of maneuverability without sacrificing the tracking stability required for long-distance passage-making. While its displacement is heavy by modern standards, the generous sail area allows it to perform respectably in lighter winds, though its true home is in the open ocean where its high Motion Comfort Ratio (exceeding 39) ensures a stable, sea-kindly platform.
Interior Comfort & Variations
Because the Ohlson 41 was built to order, the interior configurations vary significantly between hulls. Some units were finished in Sweden with traditional teak or mahogany joinery, while others were built with fiberglass cabin trunks for a more utilitarian, low-maintenance aesthetic. Noted yacht designer Alan Gurney was commissioned to redesign the interior for at least one notable hull, emphasizing a layout that prioritized blue-water safety.
Most variations offer six to eight berths, often featuring a dedicated forward-facing navigation station and a U-shaped galley designed for use at sea. The cabinetry is typically characterized by deep fiddles and robust handholds, reflecting the boat's offshore intentions. Due to the narrow beam, the interior feels more intimate than contemporary 40-footers, but this is offset by the exceptional quality of the materials and the sense of security provided by the heavy hull and solid bulkheads.
Popular Mentions & Media
The Ohlson 41 established its reputation on the international racing circuit, most notably participating in the prestigious Bermuda Race. One steel-hulled variant reportedly won its class in the Southern Ocean Racing Conference (SORC), a testament to the design's durability and speed. The yacht "Gyre," built by Paul Molich, is frequently cited in archival records as an example of the model's endurance, having hosted decades of offshore voyages. Additionally, the hull "Phoenix" (formerly known as Thursday's Child) completed multiple Atlantic crossings, further solidifying the 41's legacy as a capable transoceanic cruiser.
Known Issues & Buyer’s Checklist
Prospective buyers must approach the Ohlson 41 with an understanding of its age and the specific construction material of the individual hull.
- Material-Specific Corrosion: For steel hulls built by Frans Maas, a thorough ultrasonic hull thickness test is mandatory to identify internal corrosion, particularly in the bilges and around the tankage.
- Deck Core Integrity: On GRP versions, while Tyler-built hulls are generally robust, the deck and coachroof can suffer from moisture ingress if hardware has not been properly re-bedded over the decades.
- Rudder & Skeg Attachment: The early integration of the skeg-hung rudder requires a close inspection of the mounting points for stress cracks or play in the bushings.
- Engine Obsolescence: Many were originally fitted with Westerbeke 4-107 diesel engines. If the original powerplant remains, buyers should budget for a repower or verify the availability of parts for this legacy equipment.
- Standing Rigging: Given its racing history, inspect the mast step and chainplates for signs of fatigue or elongation from high-tension loads.
Community & Resources
The primary hub for technical data and historical preservation is The Ohlson Project (TOP), an organization dedicated to the legacy of Einar and Carl-Eric Ohlson. This group maintains original drawings, correspondence from the designers, and a registry of the few surviving hulls. Owners and enthusiasts often collaborate here to share restoration techniques and verify the provenance of individual vessels.
The Verdict
The Ohlson 41 is a connoisseur’s yacht, offering a rare blend of mid-century racing elegance and ocean-proven safety. While it lacks the interior volume of a modern cruiser, it compensates with an unparalleled motion at sea and a pedigree that commands respect in any harbor.
Pros:
- Exceptional heavy-weather stability and comfort.
- Timeless aesthetic with high-quality custom craftsmanship.
- Proven blue-water racing pedigree and transoceanic capability.
- Extremely rare, offering high pride of ownership.
Cons:
- Narrow beam results in less interior living space compared to modern designs.
- Maintenance intensive, especially for steel or wooden variants.
- Replacement parts and technical documentation can be difficult to source.
Measurements
Construction & Hull
- Construction Material
- Fiberglass/Wood Composite
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Skeg-Hung
- Ballast
- 8500 lbs
- Displacement
- 20000 lbs
- Water Capacity
- 100 gal
- Fuel Capacity
- 40 gal
Dimensions
- Length Overall (LOA)
- 40.75 ft
- Waterline Length (LWL)
- 28.58 ft
- Beam
- 11 ft
- Draft
- 6.08 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 42.5 ft
- E (Main Foot)
- 16.4 ft
- I (Foretriangle Height)
- 49 ft
- J (Foretriangle Base)
- 15.9 ft
- Forestay Length (est)
- 51.52 ft
- Sail Area
- 738 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 16.02
- Ballast / Displacement Ratio
- 42.5
- Displacement / Length Ratio (D/L) Ratio
- 382.47
- Comfort Ratio
- 39.34
- Capsize Screening Formula
- 1.62
- Hull Speed
- 7.16 kn