The ETAP 34s represents a pinnacle of the Belgian builder’s "s" series, balancing the brand’s legendary safety record with the sophisticated design work of French naval architects Mortain & Mavrikios. Introduced in the late 1990s, the 34s was marketed as a high-quality family cruiser that prioritized thermal insulation and structural security without sacrificing the sailing sensations expected of a modern performance-oriented hull. Its most distinctive feature remains the double-skinned hull construction, which utilizes a closed-cell polyurethane foam core between two fiberglass layers. This design provides the buoyancy necessary to remain afloat even if the hull is compromised—a claim certified by the International Marine Certification Institute (IMCI)—while also providing exceptional acoustic and thermal insulation that eliminates the condensation common in single-hull vessels.
ETAP 34S Information, Review, Specs

- Make
- ETAP
- Model
- 34S
- Builder
- Etap Yachting
- Designer
- Mortain & Mavrikios
- Number Built
- 85
- Production Year(s)
- 1997 - 2006
Sailing Performance & Handling
The ETAP 34s is widely regarded for its balanced and forgiving nature, characterized by a moderate displacement-to-length ratio that allows it to handle offshore conditions with more composure than its lighter mass-production counterparts. Under sail, the boat is known for its stiffness, a result of the integrated hull-grid system and well-proportioned ballast. According to editorial reviews by Yachting Monthly, the 34s exhibits a light touch on the helm and tracks remarkably well, even when pressed in gusty conditions.
A significant technical highlight is the optional "Tandem Keel." This design consists of two shallow foils connected by a longitudinal bulb, providing the lift and stability of a deep-draft fin while maintaining a shallow draft (typically around 1.3 meters). This makes the 34s particularly well-suited for coastal cruising in areas with significant tidal ranges or shallow estuaries. Furthermore, the 34s often features the Etap Vertical Steering (EVS) system—a unique vertical tiller/joystick arrangement that provides the direct feedback of a traditional tiller with the ergonomic comfort and space-saving benefits of a steering wheel.
Interior Comfort & Variations
The interior of the ETAP 34s is defined by its bright, airy atmosphere, largely due to the use of light-colored woods like beech or oak and the reflective properties of the white gel-coated interior hull skin. Unlike many yachts of its era that used dark mahoganies, the 34s feels modern and spacious. The double-hull construction provides a "thermos" effect; owners frequently report that the cabin stays significantly warmer in winter and cooler in summer compared to traditional builds, with the added benefit of nearly zero interior sweat.
The standard layout features a classic two-cabin configuration. The forward V-berth offers ample length, while the aft cabin is remarkably wide for a 34-foot boat, tucked beneath the cockpit sole. The salon features two straight settees flanking a central folding table, doubling as sea berths during offshore passages. The galley is L-shaped and positioned to port, featuring deep sinks and sufficient refrigeration for extended cruising. Unlike some of its larger siblings, like the Etap 37s which offered multiple head or cabin configurations, the 34s was primarily focused on maximizing the living volume for a cruising couple or small family, though some variations in upholstery and cabinetry finish were offered over the production run.
Known Issues & Buyer’s Checklist
While the ETAP 34s is built to a high standard, the very features that make it unique require specific scrutiny during a pre-purchase survey:
- Foam Core Integrity: The polyurethane foam between the hulls is closed-cell, meaning it should not "wick" water. However, if the boat has had poorly installed through-hull fittings or significant collision damage that wasn't professionally repaired, water can migrate between the skins. Surveyors should use moisture meters and percussion testing across the hull and deck.
- EVS Steering Linkage: If the boat is equipped with the EVS system rather than a standard tiller or wheel, the mechanical linkages and bearings should be inspected for play. While robust, the system requires specialized parts if it becomes stiff or sloppy.
- Saildrive Diaphragm: Most ETAP 34s models were fitted with Volvo Penta or Yanmar engines using saildrives. The rubber seal (diaphragm) has a manufacturer-recommended replacement interval (usually 7-10 years); buyers should verify the age of this seal to avoid a costly "engine-out" maintenance task immediately after purchase.
- Window and Portlight Seals: The panoramic windows are a signature design element but can be prone to leaking if the original sealant has degraded. Look for evidence of water tracking down the interior hull liner.
Community & Resources
The ETAP 34s is supported by a remarkably active and technically proficient owner base, reflecting the brand’s "cult" following in Northern Europe and the United Kingdom. The most prominent group is the Etap Owners Association, which maintains a repository of technical manuals, wiring diagrams, and specific maintenance guides for the "s" range. In Germany and the Benelux region, the Etap Club provides a platform for owners to share modifications and organize rallies, emphasizing the boat's identity as a safe, long-distance family cruiser.
The Verdict
The ETAP 34s is an "engineer’s boat," designed for the sailor who prioritizes structural safety and build quality over the low entry price of high-volume production yachts. It remains a top choice for those sailing in colder climates or shallow waters where its insulation and tandem keel options shine.
Pros:
- Unsinkable Construction: Provides unparalleled peace of mind for offshore or night sailing.
- Thermal/Acoustic Insulation: Extremely quiet down below with no condensation issues.
- High Resale Value: Etaps historically hold their value better than many contemporary builders.
- Tandem Keel Option: Exceptional performance-to-draft ratio for shallow cruising grounds.
Cons:
- Complex Repairs: Major hull damage can be more difficult and expensive to repair than single-skin fiberglass.
- Limited Storage: The volume occupied by the buoyancy foam slightly reduces the available locker space compared to non-unsinkable 34-footers.
- Unique Steering: The EVS system has a learning curve for those accustomed to traditional wheels or tillers.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x —
- Ballast
- 3200 lbs (Iron)
- Displacement
- 10000 lbs
- Water Capacity
- 45 gal
- Fuel Capacity
- 24 gal
Dimensions
- Length Overall (LOA)
- 34.87 ft
- Waterline Length (LWL)
- 29.76 ft
- Beam
- 11.55 ft
- Draft
- 6.07 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 680 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 23.44
- Ballast / Displacement Ratio
- 32
- Displacement / Length Ratio (D/L) Ratio
- 169.38
- Comfort Ratio
- 18.98
- Capsize Screening Formula
- 2.14
- Hull Speed
- 7.31 kn