The Thurø 33 represents a pivotal chapter in the history of Walsteds Baadeværft, serving as the yard’s foray into high-quality fiberglass production while maintaining the artisanal standards of Danish cabinetry. Designed by the yard’s founder, Aage Walsted, in the early 1970s, the yacht was conceived as a robust, sea-kindly cruiser capable of handling the demanding conditions of the Baltic Sea and beyond. Unlike the mass-produced GRP (glass-reinforced plastic) vessels of its era, the Thurø 33 was built with a philosophy of "longevity over speed," resulting in a hull that is significantly over-engineered by modern standards. According to the historical archives of Walsteds Baadeværft, the yard’s transition into GRP construction did not signal a departure from their roots; rather, it allowed them to combine a low-maintenance hull with the exquisite teak and mahogany joinery that defined their wooden racing yachts and custom builds.
Thurø 33 Information, Review, Specs

- Make
- Thurø
- Model
- 33
- Builder
- Walsteds
- Designer
- Niels & Peter Roos
- Number Built
- 22
- Production Year(s)
- 1975 - 1987
Sailing Performance & Handling
On the water, the Thurø 33 is characterized by its semi-long keel and substantial displacement-to-length ratio, which provide exceptional directional stability and a soft motion in a seaway. It is not a light-air flyer, but rather a "powerful" sailer that finds its stride when the breeze freshens. The hull's deep V-sections forward reduce slamming into head seas, a trait often praised in Scandinavian designs of this vintage.
Under sail, the boat exhibits a high degree of stiffness, thanks to a healthy ballast ratio that allows it to carry full canvas longer than many of its contemporaries. Owners often report that the helm remains balanced even when pressed, a testament to Aage Walsted’s eye for naval architecture. While the semi-long keel makes backing under power in tight marinas a maneuver that requires practice and a bit of "prop walk" intuition, the trade-off is a boat that can be steered with a light touch on long offshore passages. Technical assessments from the era suggest the boat was designed to be a "gentleman’s cruiser," prioritizing predictable handling and comfort over raw windward velocity.
Interior Comfort & Variations
The interior of the Thurø 33 is where the Walsteds pedigree is most evident. Every hull was finished with the same level of care as the yard’s one-off wooden commissions. The layout typically features a classic offshore arrangement: a functional U-shaped or L-shaped galley to port, a proper navigation station to starboard, and a cozy saloon with settee berths that double as excellent sea berths.
The use of solid mahogany and high-grade marine plywood with thick veneers is standard throughout. Because Walsteds operated as a semi-custom yard, minor variations exist between hulls; some owners opted for a traditional pilot berth, while others preferred additional cabinetry for long-range storage. Headroom is generous for a 33-footer of this vintage, typically clearing 6 feet (1.85m) in the main cabin. The forward V-berth and the heads compartment are separated from the main saloon by a solid bulkhead, providing a level of privacy often lacking in smaller coastal cruisers. While no direct "stretched" siblings exist, the Thurø 33 is often considered the spiritual successor to the yard’s smaller wooden designs, applying the same interior ergonomics to a more durable GRP platform.
Known Issues & Buyer’s Checklist
Prospective buyers of a Thurø 33 should focus on the specific aging characteristics of high-quality Scandinavian builds from the 1970s and 80s:
- Teak Deck Longevity: Many Thurø 33s were delivered with thick teak decks bedded in resin or screwed into the sub-deck. After four decades, the bungs and seams may require a full re-caulking or, in worse cases, the deck may have reached the end of its service life.
- Engine Replacement: The original Volvo Penta or Bukh engines are often nearing the end of their reliable lifespan if they haven't been replaced. Check the engine beds and the accessibility of the stern gland.
- Chainplate Inspection: Given the boat's capability for blue-water cruising, the stainless steel chainplates should be inspected for crevice corrosion, particularly where they pass through the deck.
- Rudder Bearings: The semi-skeg hung rudder is robust, but the bearings can develop play over time. If there is a noticeable "clunk" in the tiller or wheel when waves hit the stern, the bushings likely need replacement.
Community & Resources
The Thurø 33 benefits from the prestige of the Walsteds brand. While there is no large-scale international class association, the yacht is a frequent participant in "Classic Yacht" rallies in Denmark and Germany. Technical support and original design insights can often be sourced directly through Walsteds Baadeværft, which remains an active and highly respected yard in Thurø, Svendborg. Owners often find commonality with the "Great Dane 28" and "Hallas-Møller" communities, as these boats share the same Danish design ethos and build quality.
The Verdict
The Thurø 33 is a "forever boat" for the sailor who values craftsmanship and seaworthiness over modern interior volume and flat-out speed. It is a vessel built to a standard, not a price point.
Pros:
- Exquisite interior joinery that far surpasses modern production yachts.
- Exceptional sea-kindliness and heavy-weather performance.
- High resale value due to the prestigious Walsteds reputation.
- Robust GRP layup that is largely resistant to structural fatigue.
Cons:
- Maintenance of the extensive exterior teak can be time-consuming and expensive.
- The semi-long keel makes tight-quarters maneuvering under power challenging.
- Interior volume is lower than modern "wide-stern" cruisers of the same length.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Skeg-Hung
- Ballast
- 4960 lbs
- Displacement
- 10914 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 32.97 ft
- Waterline Length (LWL)
- 27.07 ft
- Beam
- 10.01 ft
- Draft
- 5.81 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 37.07 ft
- E (Main Foot)
- 10.66 ft
- I (Foretriangle Height)
- 40.75 ft
- J (Foretriangle Base)
- 13.45 ft
- Forestay Length (est)
- 42.91 ft
- Sail Area
- 603 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 19.61
- Ballast / Displacement Ratio
- 45.45
- Displacement / Length Ratio (D/L) Ratio
- 245.62
- Comfort Ratio
- 27.2
- Capsize Screening Formula
- 1.81
- Hull Speed
- 6.97 kn