Alubat Ovni 39 Information, Review, Specs

Make
Alubat
Model
Ovni 39
Builder
Designer
Number Built

Designed by the prolific naval architect Philippe Briand, the Alubat Ovni 39 represents a hallmark in the evolution of French aluminum yacht construction. Built by the Alubat shipyard between 1987 and 1997, this model solidified the "dériveur intégral" (full lifting keel) concept as a viable choice for high-latitude and blue-water exploration. Constructed from AG4 MC aluminum with a hard-chined hull, the Ovni 39 was engineered to be virtually indestructible, capable of withstanding impacts that would compromise a GRP hull while offering the unique ability to beach in shallow estuaries or traverse canal systems with its minimum draft of just 0.70 meters.

Sailing Performance & Handling

The sailing characteristics of the Ovni 39 are defined by its lifting keel and internal ballast system. With a Sail Area/Displacement (SA/Disp) ratio of approximately 20.59, the boat is surprisingly lively in light to moderate airs for a metal cruiser. However, its performance is heavily influenced by its configuration; with the board fully down (drawing 2.20 meters), it tracks well and offers respectable upwind performance, though it will not point as high as a deep-keeled racing yacht.

In heavy weather, the Ovni 39 shines. By partially retracting the centerboard, the skipper can move the center of lateral resistance aft, significantly reducing the risk of "tripping" over the keel in large following seas. This "skidding" ability is a cited safety feature among long-distance voyagers. Reports from experienced owners, including those detailed in technical archives, suggest that the boat feels stiff due to its wide beam and high form stability, though it requires reefing earlier than its lead-ballasted competitors to manage heel and maintain steering authority.

Interior Comfort & Variations

The interior of the Ovni 39 is designed for the practicalities of long-term living at sea. The shipyard typically finished these vessels in light oak or cherry, creating a bright atmosphere that contrasts with the rugged metallic exterior. Headroom is generous, averaging 1.90 meters in the main salon. The layout usually centers around a U-shaped galley to port, which is highly functional in a seaway, and a large dining area that can accommodate a full crew.

Variations of the hull include two-cabin and three-cabin versions. The two-cabin "owner" layout provides a massive aft cabin and additional storage space, which is often preferred for circumnavigation. The Ovni 39 also shares a strong lineage with its sibling, the Ovni 385. While the 385 (and later the 40 and 43) introduced a more modern, wider transom and different stern steps, the 39 is often sought after for its specific balance of volume and traditional Briand lines.

The Alubat Ovni range earned global fame largely through the advocacy of renowned sailor Jimmy Cornell. In his technical reviews and voyage logs at Cornell Sailing, Cornell mentions sailing an Ovni 39 as far north as 80°N in the Svalbard archipelago. He notes the vessel's resilience in ice-strewn waters and its ability to provide a safe, insulated platform in extreme environments, which helped cement the 39's reputation as a "go-anywhere" expedition boat.

Known Issues & Buyer’s Checklist

Prospective buyers must focus their inspections on the unique challenges of aluminum construction and the lifting keel mechanism:

  • Electrolysis & Corrosion: This is the primary concern for any aluminum vessel. A thorough survey should include a "current leakage" test. Inspect areas where stainless steel fittings meet the aluminum deck; if not properly isolated with Tef-Gel or similar compounds, galvanic corrosion is common.
  • Centerboard Pivot & Hydraulics: The keel is often raised via a manual line or a hydraulic pump. The pivot pin and the internal trunk should be checked for wear or marine growth that could jam the board.
  • Hull Insulation: Older Ovnis sometimes suffer from condensation issues if the original insulation has degraded or was not applied consistently behind the cabinetry.
  • Internal Ballast: The ballast is typically lead pigs bedded in resin within the hull. Ensure there are no signs of "lifting" or water ingress between the ballast and the hull plating.

Community & Resources

The Ovni 39 is supported by a dedicated international following. The Ovni Owners Association (UK) provides an English-language technical repository for maintenance of the lifting keel and aluminum care. In France, the Ovni-Club serves as the primary hub for technical discussions and historical data for the entire Alubat range.

The Verdict

Pros:

  • Exceptional Durability: The aluminum hull is ideal for high-latitude sailing and rocky coastlines.
  • Shoal Draft: The 0.7m minimum draft allows access to anchorages and canals closed to other 40-footers.
  • Safety: The ability to beach and the "skidding" effect in heavy seas provide unique safety margins.

Cons:

  • Maintenance Intensive: Requires rigorous attention to electrical systems and zinc anodes to prevent corrosion.
  • Upwind Performance: Lacks the pointing ability of a fixed-keel performance cruiser.
  • Insulation: Older models may require upgrades to manage condensation in cold climates.

Measurements

Construction & Hull

Construction Material
Hull Type
— Sailboat
Keel Type
Ballast
-
Displacement
-
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
-
Waterline Length (LWL)
-
Beam
-
Draft
-
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
-

Calculations

Sail Area / Displacement (SA/D) Ratio
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
Hull Speed
— kn