Design and Construction
The Ovni 56 is built entirely in aluminium, a material choice that runs through the hull and defines the marque’s approach to rugged voyaging boats. Its keel is a centreboard type realized as a pivoting lifting keel, which lets the boat settle into about 0.80 to 0.90 meter of water dependent on load and then retract for shallow or inland passages anchor. The hull’s proportions are notably generous: a length-to-beam ratio of 3.32 places it among the roomier layouts in its class, and an immersion rate of roughly 445 kg per centimetre describes how heavily it sits as payload accrues. With a ballast ratio of 41 percent, the design carries more concentrated low-weight than 76 percent of comparable sailboats, a figure the data ties directly to a very high ability to resist heeling.
Rig and Handling
The cutter rig gives the Ovni 56 a versatile offshore sail plan, and the listed control lengths show the scale of its running rigging: jib and genoa sheets run about 16.6 metres at 16 mm diameter, the mainsheet stretches to 41.5 metres, and a spinnaker sheet reaches 36.5 metres, all in 16 mm line. Under power the boat may carry an 85 hp engine, from which a calculated maximum of about 7.6 knots is derived. Under sail, the theoretical displacement-hull maximum for its length is 8.9 knots. The capsize screening value comes in at 2.00, a number that would bar the boat from ocean race acceptance, though its displacement-length ratio of 190 still groups it among so-called moderate racers and its sail-area-to-displacement ratio of 21.46 describes a reasonably powered cruiser. The wetted surface of the bottom is about 78 square metres.
Accommodations
Below, the Ovni 56 is laid out with eight berths, a count that suits a family or a crewed passage-making style rather than a minimalist couple’s coastal boat. Fresh water capacity is 600 litres, or about 158 US gallons, which supports extended time away from shore without constant resupply. The beamy hull form implied by the length-to-beam ratio is what gives those berths and tankage their surrounding room, making the interior a practical platform rather than a compromised afterthought.
The Verdict
The Ovni 56 is a distinctly capable aluminium voyager from Philippe Briand’s early-nineties Ovni work, built by SAS Alubat Chantier Naval around a pivoting lifting keel and a beamy, well-ballasted hull. Its cutter rig and substantial tankage suit long-range cruising, while the shallow draft extends its reach into waters closed to fixed-keel boats. The capsize screening value keeps it out of sanctioned ocean racing, but the design reads as a serious, stable cruising platform rather than a racer.
Pros
- Aluminium hull with pivoting lifting centreboard for shallow and inland access
- Roomier than 82 percent of similar designs, with eight berths and 600 litres of water
- Ballast ratio of 41 percent gives very high resistance to heeling
Cons
- Capsize screening value of 2.00 excludes it from ocean race participation
- Moderate-racer displacement-length ratio suggests it is no lightweight sprint canoe