Ovni 345 Information, Review, Specs

Make
Ovni
Model
345
Builder
Alubat
Designer
Michel Joubert
Number Built
Production Year(s)
1987 - 2006

The Ovni 345 is a quintessential example of Alubat’s commitment to the "go-anywhere" blue-water philosophy. Designed by the prolific duo Alain Mortain and Yannis Mavrikios, this 10.45-meter aluminum cruiser was introduced in the late 1990s as a replacement for the older Ovni 32 and 36 models, bridging the gap with a more modern hull shape and improved interior ergonomics. Constructed from 5083 H111 aluminum, the 345 is a fully integrated lifting keel (dériveur intégral) yacht, meaning the keel retracts entirely into the hull, allowing for a minimum draft of just 0.58 meters. This capability permits the vessel to enter shallow lagoons and dry out on its reinforced hull plate, a hallmark of the Les Sables d’Olonne shipyard.

Sailing Performance & Handling

The sailing characteristics of the Ovni 345 are defined by its moderate displacement and hard-chined hull. With a displacement-to-length ratio that leans toward the heavier side of cruiser-racers, the boat is not a light-air flyer, but it excels when the breeze freshens. According to technical assessments by Yachting Monthly, which has extensively reviewed the 345’s larger siblings in the same design family, the hard chines provide significant form stability, allowing the boat to "lock in" once a certain degree of heel is reached.

Under sail, the 345 is remarkably sea-kindly. The ability to lift the keel partially or fully while off the wind is a distinct tactical advantage; by raising the board on a run or a broad reach, the sailor reduces drag and eliminates the "tripping" sensation in heavy following seas, allowing the hull to slide down wave faces predictably. However, like most lifting-keel designs without a weighted bulb, the 345 lacks the ultimate pointing ability of a deep-finned performance yacht. It tracks well but requires active sail trimming to maintain speed through a tack. The steering is typically via a tiller—preferred by purists for its direct feedback—though wheel steering was a common factory option for the export market.

Interior Comfort & Variations

The interior of the Ovni 345 is dominated by the necessary but functional presence of the centerboard trunk, which is cleverly integrated into the salon table. Despite this structural requirement, Mortain & Mavrikios maximized the 3.60-meter beam to create a space that feels larger than its 34-foot designation. Most 345s feature a two-cabin layout: a large "V" berth forward and a substantial transverse double cabin aft to port, with a large head and a dedicated wet locker to starboard.

Alubat offered several wood finishes, moving away from the darker mahogany of earlier decades toward lighter light oak or American cherry, which helps brighten an interior that can otherwise feel enclosed due to the robust aluminum portlights. The galley is linear and positioned to port, providing good bracing for the cook while underway. A significant sibling variant to note is the Ovni 365, which eventually evolved from the 345’s success; while built on a slightly longer waterline, the 365 shares much of the 345’s internal DNA, specifically the arrangement of the nav station and the utilization of the space under the cockpit sole.

While the Ovni 345 hasn't been the sole star of a major motion picture, it is a staple of the "Longue Route" community and is frequently cited in French maritime literature as the ideal size for a couple cruising the Atlantic. The model gained recognition through high-latitude expeditions where its aluminum hull offered protection against "growlers" (small icebergs) that would easily puncture a GRP hull. It is a frequent subject of technical study in blue-water cruising guides, such as those published by Jimmy Cornell, who has long championed the Alubat shipyard for its rugged, lifting-keel utility in remote regions like the Northwest Passage and Patagonia.

Known Issues & Buyer’s Checklist

Prospective buyers must focus their surveys on the specific challenges inherent to aluminum construction and the lifting keel mechanism.

  • Galvanic Corrosion: This is the primary concern for any aluminum vessel. A thorough "hull potential" test is required to ensure the sacrificial anodes have been maintained and that there is no stray current leakage from the DC or AC systems. Look for "bubbling" paint, which often indicates localized pitting.
  • Centerboard Mechanism: The board is raised and lowered via a manual or hydraulic line system. The pivot pin and the nylon spacers (bushings) are wear items. If the board "clanks" while at anchor, the spacers likely need replacement, a task that requires hauling the boat.
  • Teak Deck Integrity: Many Ovni 345s were fitted with optional teak side decks. These are often glued rather than screwed to the aluminum, but if screws were used, they represent potential leak points and sites for crevice corrosion.
  • Window Seals: The heavy-duty Goiot hatches and portlights used during this era are prone to seal degradation. Given the 345’s age, checking for water ingress around the salon windows is essential, as aluminum frames can trap moisture against the interior woodwork.

Community & Resources

The Ovni 345 benefits from one of the most dedicated owner networks in the world. The Ovni Guide, a technical repository maintained by owners, serves as an unofficial "shop manual" for the 345, offering specific advice on replacing keel lines and insulating the hull for cold-weather sailing. Additionally, the Ovni Owners Association provides a robust forum for sharing modification ideas and organizing rallies, ensuring that technical knowledge for this specific model remains accessible decades after production ceased.

The Verdict

The Ovni 345 is a specialized tool designed for the sailor who views the world as a series of shallow inlets and rugged coastlines rather than a series of marinas. It sacrifices some upwind performance for the peace of mind provided by an armored hull and the versatility of a 0.58m draft.

Pros:

  • Ultimate Versatility: The ability to dry out upright on a beach is a game-changer for cruisers.
  • Rugged Construction: The aluminum hull is exceptionally impact-resistant and requires no gelcoat maintenance.
  • Safety: Built with watertight bulkheads and a robust stability profile for offshore work.

Cons:

  • Electrical Sensitivity: Requires rigorous monitoring of the electrical system to prevent hull corrosion.
  • Upwind Performance: The lack of a deep, weighted keel limits pointing ability compared to GRP cruisers.
  • Interior Obstruction: The centerboard trunk divides the salon, which may feel restrictive to some.

Measurements

Construction & Hull

Construction Material
Aluminum
Hull Type
Monohull Sailboat
Keel Type
Centerboard
Rudder
1x —
Ballast
5732 lbs
Displacement
11023 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

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

Rig & Sails

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

Calculations

Sail Area / Displacement (SA/D) Ratio
22.93
Ballast / Displacement Ratio
52
Displacement / Length Ratio (D/L) Ratio
191.1
Comfort Ratio
20.44
Capsize Screening Formula
2.12
Hull Speed
7.28 kn