The ETAP 39s, introduced in 1998 as the flagship of the Belgian shipyard’s fleet, remains one of the most technologically distinctive production cruisers of its era. Designed by J&J Design, the 39s was engineered around the "ship-in-ship" philosophy that defined the brand: a double-skinned GRP hull with the void between the inner and outer layers injected with closed-cell polyurethane foam. This construction provides approximately 100 cubic feet of buoyancy, rendering the vessel officially unsinkable even if both hulls are breached. Beyond the safety aspect, this foam core acts as exceptional thermal and acoustic insulation, effectively eliminating the condensation issues common in single-skin fiberglass yachts.
ETAP 39S Information, Review, Specs

- Make
- ETAP
- Model
- 39S
- Builder
- Etap Yachting
- Designer
- J&J Design/Etap Yachting
- Number Built
- Production Year(s)
- 1998 - 2005
Sailing Performance & Handling
The ETAP 39s is a moderate-displacement cruiser with a Displacement/Length (D/L) ratio of approximately 184, indicating a hull that is light enough for agility but heavy enough for offshore stability. It features a 7/8 fractional sloop rig with swept-back spreaders, which simplifies shorthanded sailing by reducing the size of the headsail. Under sail, the boat has been described as a "delight" by Cruising World, noting that its balanced spade rudder provides a light, responsive feel and maintains tracking without a tendency to round up in gusts.
A unique feature found on many 39s models is the EVS (Etap Vertical Steering) system. Rather than a traditional wheel or horizontal tiller, the EVS is a vertical "joystick" tiller mounted on a pedestal. This system offers the direct mechanical feedback of a tiller while occupying less cockpit space than a large wheel. For those seeking traditional handling, the 39s was also available with a standard steering wheel. The boat was offered with two lead keel options: a deep fin draft of 6'6" (1.97m) or a shoal draft tandem keel of 4'11" (1.50m), the latter utilizing a winged bulb to maintain lift while allowing access to shallower cruising grounds.
Interior Comfort & Variations
The interior of the 39s is characterized by its bright, airy feel, largely due to the light beech or mahogany veneers and the lack of visible raw fiberglass. The layout was offered in two primary configurations:
- Two-Cabin Version: This "owner’s" layout features a large master cabin forward and a single double guest cabin to starboard. The primary advantage of this version is the inclusion of a separate shower stall in the aft head and a cavernous lazarette for gear storage.
- Three-Cabin Version: This layout adds a second double cabin to port, making the boat capable of sleeping eight people when including the saloon. However, Sailing Magazine notes that this configuration sacrifices virtually all cockpit lazarette storage and the dedicated shower stall.
Both versions share a linear galley along the port side, which provides ample counter space but can be challenging to use securely while heeled in a seaway. The saloon is dominated by a U-shaped settee to starboard with a central island seat, though reviewers have noted that seating six for dinner is a tight fit.
Popular Mentions & Media
The ETAP 39s gained significant international recognition shortly after its launch, notably being featured as a contender in the Cruising World Boat of the Year awards. It was also selected by Blue Water Sailing Magazine for its 2002 "Annual Gallery of Blue Water Boats," where testers reported positive behavior during a 400-mile sea trial in conditions ranging from calm to "furious."
Known Issues & Buyer’s Checklist
While the ETAP 39s is built to high standards, the unique construction introduces specific areas for survey:
- Moisture in the Void: Although the polyurethane foam is 95% closed-cell, water can occasionally migrate between the hulls if through-hull fittings or deck hardware were not properly re-bedded. A moisture meter is essential during a survey to ensure the core is dry.
- Engine Access: The linear galley and cabin configurations result in relatively tight engine access. Prospective buyers should check the service history of the Volvo Penta sail-drive, as the seal requires replacement every seven years.
- Rudder Shaft Corrosion: Some Etap models from this era utilized aluminum rudder shafts. In environments where copper-based bottom paint was used near the shaft, galvanic corrosion can occur. The shaft should be inspected for pitting at the entry point to the hull.
- Deck Layout Hazards: The cabin-top ports open outward onto the side decks, which can be a tripping hazard when moving forward. Additionally, the extruded aluminum toe rail and angled stanchions require careful foot placement.
Community & Resources
Owners of the 39s are supported by the Etap Owners Association (often referred to as the Etap Club), which remains a vital resource for technical drawings and manuals that are otherwise difficult to obtain since the shipyard ceased production.
The Verdict
The ETAP 39s is a sophisticated European cruiser that prioritizes safety and insulation without sacrificing sailing pleasure.
Pros:
- Unsinkable Safety: Provides immense peace of mind for offshore passages.
- Excellent Insulation: Quiet and condensation-free interior in all climates.
- Handling: Well-balanced under sail with a light touch on the helm.
- Build Quality: High-grade finishes and robust deck hardware.
Cons:
- Storage Trade-offs: The three-cabin version lacks sufficient external storage for long-term cruising.
- Technical Complexity: The double-hull design can make DIY repairs to through-hulls or wiring more difficult.
- Linear Galley: Less secure for cooking during heavy weather compared to U-shaped designs.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Bulb
- Rudder
- 1x Spade
- Ballast
- 4960 lbs (Lead)
- Displacement
- 14991 lbs
- Water Capacity
- 92 gal
- Fuel Capacity
- 37 gal
Dimensions
- Length Overall (LOA)
- 38.98 ft
- Waterline Length (LWL)
- 33.46 ft
- Beam
- 12.63 ft
- Draft
- 6.4 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- 46.67 ft
- E (Main Foot)
- 16.58 ft
- I (Foretriangle Height)
- 43.33 ft
- J (Foretriangle Base)
- 12.08 ft
- Forestay Length (est)
- 44.98 ft
- Sail Area
- 649 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 17.08
- Ballast / Displacement Ratio
- 33.09
- Displacement / Length Ratio (D/L) Ratio
- 178.65
- Comfort Ratio
- 22.52
- Capsize Screening Formula
- 2.05
- Hull Speed
- 7.75 kn