The aventure takes
A semi-custom sailing yacht, designed for bluewater cruising
The OVNI 650 is the flagship of the range: a 21-metre LOA sailing yacht, designed by Mortain & Mavrikios in collaboration with CBA, and built at the Alubat shipyard in Les Sables-d’Olonne.
This model reflects our approach to yacht building. At the request of design offices or in response to tenders, we work on distinctive projects that remain true to the spirit of the range, without becoming a fully bespoke one-off designed for a single owner. Owners with a specific sailing programme can therefore benefit from solutions already proven on our other models.
From hull design to the choice of interior arrangements, every stage is developed in collaboration with the architect and our teams. The yacht is currently under construction, so some of the information below will be added and updated as the project progresses.
Technical Specifications of the ovni 650
Modern hull, flat bottom, twin rudders and a 1 000 kg lifting keel: this large sailing yacht combines the freedom of a lifting keel with the spaciousness of a yacht designed for long-distance cruising. With the keel raised, draught is reduced to 1,05 m; lowered, it extends to 3,90 m, providing better windward performance.
21 m
5,90 m
Keel down : 3,90 m Keel up : 1,05 m
225 m²
33 000 kg
Why the OVNI 650?
Anchorages off-limits to larger boats
On a yacht of this size, a fixed keel usually means staying clear of shallow waters. The OVNI 650 changes that: its lifting keel gives you the freedom to choose your anchorage rather than being limited by it.
A draught reduced to 1.05 m
With the keel raised, the yacht can access estuaries, sheltered coves and lagoons that a fixed-keel yacht of the same length could not reach. It can also safely take the ground on suitable seabeds, for the duration of a tide.
Stability designed for ocean passages
20 mm plate flat bottom, semi-heavy construction and twin rudders combine to provide safe, balanced handling, even as the miles build up offshore.
A programme tailored to your plans
Interior layout, equipment, autonomy and propulsion : every option is defined according to the intended sailing programme, from coastal cruising along the European coast to a high-latitude circumnavigation.
Why choose Alubat ?
People, expertise, craftsmanship and fifty years of history behind every yacht.
- Fifty years of expertise: more than 1,800 yachts built in Les Sables-d’Olonne, now sailing the world’s seas.
- Long-term support: spare parts, after-sales service, refits and renovations, all provided by our teams.
- A value that stands the test of time: when properly maintained, an OVNI remains sought after and retains strong resale value year after year.
The OVNI range
From the OVNI 370 to the OVNI 650, all our lifting-keel yachts share the same DNA, with each model designed for a specific sailing programme. For a fast, ocean-going fixed-keel yacht, also discover the CIGALE 15 QR.
The largest lifting-keel yacht with a deck saloon and twin engines.
The bluewater lifting-keel yacht, designed for life on board.
The 16-metre lifting-keel yacht with an integrated deck saloon.
A more specific question, something you’d like to clarify? Get in touch and we’ll be happy to help.
Take the helm
Explore the OVNI 650 plans, then tell us about your project: our team will support you from defining your sailing programme through to launch.