Ovni 39 Information, Review, Specs

Sailing Performance & Handling

The Ovni 39 is defined by its lifting keel mechanism, which allows the draft to vary from a shallow 0.80 meters (approx. 2.6 feet) to 2.10 meters (approx. 6.9 feet). Under sail, the boat behaves like a classic heavy-displacement cruiser. With a displacement of approximately 7,500kg to 8,000kg, it possesses significant momentum, which helps it punch through a chop but requires a decent breeze to get moving. Because it lacks a weighted bulb keel—relying instead on internal ballast—it does not have the same "snap" back to vertical as a deep-finned lead-keeled yacht. Instead, it exhibits a more gradual heel, stiffening significantly once the hard chine bites into the water.

According to technical reviews from the era by Voiles et Voiliers, the Briand hull is surprisingly well-balanced, tracking straight even when over-canvassed. The twin-rudder configuration (found on some later Alubat models but often a single, very deep lifting rudder on the 39) ensures control when the boat is heeled. When the centerboard is raised, the boat can be steered downwind with remarkable ease in heavy seas, as the lack of a deep keel reduces the risk of tripping over the underwater profile in large rollers.

Interior Comfort & Variations

The interior of the Ovni 39 is a testament to Alubat's carpentry skills, usually finished in light oak or ash to offset the industrial nature of the aluminum hull. The layout was typically offered in two- or three-cabin configurations. The two-cabin version is often preferred by long-term cruisers, as it provides a massive cockpit locker and a more spacious heads compartment.

The saloon is characterized by a central table that cleverly conceals the centerboard trunk. Because the trunk must be large enough to house the lifting keel, it dictates the flow of the cabin, yet Briand’s design manages to make it a functional part of the galley and seating area. Headroom is generous, often exceeding 6'2", which was a significant selling point for the model. The sibling Ovni 43, built during the same period, offers nearly identical aesthetics but provides additional volume in the aft sections for larger stowage or a second aft head.

Popular Mentions & Media

While the Ovni 43 and 435 gained global fame through Jimmy Cornell’s Aventura voyages, the Ovni 39 occupies a respected space in the French sailing community as a more manageable, "owner-operator" sized version of those legendary expedition yachts. It is frequently featured in French sailing periodicals as a benchmark for used aluminum cruisers. The model is also a staple in the logs of high-latitude sailors who document their journeys through the Northwest Passage or Patagonia, where the ability to beach the boat for hull inspections or to escape ice is a critical safety feature.

Known Issues & Buyer’s Checklist

Purchasing a used aluminum vessel like the Ovni 39 requires a specialized survey focusing on metal-specific concerns rather than fiberglass osmosis.

1. Galvanic Corrosion: This is the primary "gotcha." Prospective buyers must inspect the hull for signs of pitting, particularly near the waterline or around through-hull fittings. If a previous owner installed non-compatible bronze fittings instead of plastic or high-grade stainless steel, the surrounding aluminum may be compromised.
2. Lifting Keel Mechanism: The pivot pin and the hydraulic or manual lifting tackle are wear items. It is essential to check for "clunking" sounds when sailing, which indicates wear in the pin or the nylon spacers that prevent the board from rattling in the trunk.
3. Insulation & "Blooming": Older Ovnis used various insulation materials. If the insulation has failed or was not applied properly, condensation can form between the hull and the wooden cabinetry, leading to "aluminum bloom" (a white powdery oxidation). This is often hidden behind furniture and requires a borescope to inspect thoroughly.
4. The Hull-to-Deck Joint: While Alubat eventually moved toward fully welded joints, some older models utilized a combination of mechanical fastening and welding. Ensure there are no leaks at this junction, as salt water trapped between the deck and hull can cause crevice corrosion.

Community & Resources

Owners of the Ovni 39 are supported by a highly active and technically proficient community. The Ovni Club is the premier international resource, providing a massive repository of technical drawings, modification guides, and advice on managing aluminum hulls. This community is essential for sourcing parts for the lifting keel system and for advice on modernizing the electrical systems to prevent stray current leakage.

The Verdict

The Ovni 39 remains one of the most sought-after mid-sized aluminum cruisers on the secondary market for those planning "thin water" or high-latitude expeditions.

Pros:

• Unrivaled Versatility: The ability to dry out on a tide or enter shallow lagoons that are off-limits to other cruisers.
• Robust Construction: The 5083 aluminum hull provides peace of mind in waters where containers or ice might be present.
• Philippe Briand Design: A balanced, seaworthy hull that handles heavy weather with composure.

Cons:

• Maintenance Intensive: Requires strict vigilance regarding the electrical system and sacrificial anodes to prevent corrosion.
• Sailing Ratios: Not a performance boat; the weight and windage of the chined hull make it sluggish in light airs below 8 knots.
• Market Premium: Due to their longevity and reputation, they hold their value significantly higher than similar-aged fiberglass boats.