Design and Construction
Alubat built the Ovni 36 with an aluminum hull and aluminum deck built by Alubat (FRA), and the yard's approach uses aluminum for both rather than a composite deck on a metal hull. The lifting keel drops vertically, giving a raised draft around 1.8 feet and a lowered maximum of 6.73 feet, which lets the boat enter shallow anchorages that a fixed-keel 36-foot cruiser could not. At 12,346 pounds displacement with 5,071 pounds of lead ballast, the 41 percent ballast ratio and 214 displacement-length ratio place her in moderate-weight territory; the 3.08 length-to-beam ratio and 419 square feet of wetted surface describe a hull with a 7.28-knot theoretical hull speed.
Rig and Handling
The cutter rig carries 775 square feet of sail area at 100 percent, producing a sail-area-to-displacement ratio of 23.29 that marks her a very high performer. She is very stable and stiff, best suited as a fast cruiser, yet she carries a low righting capability if capsized and a capsize ratio of 2.13 — figures a buyer should weigh against her offshore aspirations. The estimated sheet lengths run 37.9 feet for jib and genoa with 94.7 feet for the mainsheet, all sized around 14 mm diameter, which tells you something about cockpit geometry and winch loads on a boat of this size.
Accommodations
Below, the Ovni 36 sleeps six across two cabins plus the saloon, with a single head and 6.23 feet of headroom. The 85-gallon water capacity and 48-gallon fuel tank were originally small, and the manufacturer notes a short water supply range — constraints that shape any extended cruising plan and explain why so many survivors carry added tanks or frequent replenishments.
Known Issues
The shortfalls are mostly about provisioning rather than structure. The original fuel capacity of 48 gallons was small from the start, and the 85-gallon water tank yields a short supply range before replenishment. The low righting capability if capsized is an inherent design trait tied to the lifting-keel configuration and modest capsize ratio, not a defect to be repaired but a behavior to respect in heavy weather.
Refits and Ownership
With only seventy-five built and production ending in 2005, the Ovni 36 sits in a small cohort of aluminum cruisers. Owners living with the original tankage typically address the short water and fuel ranges through added capacity or disciplined cruising patterns. The aluminum hull and deck demand the usual alloy vigilance.
The Verdict
The Ovni 36 is a specialized aluminum lifting-keel cruiser for sailors who value shallow-water access and stiff, quick passage-making over volume and self-sufficiency. Briand's late-eighties design remains a coherent fast-cruiser proposition, provided the buyer plans around modest original tankage and the keel's righting limitations.
Pros
- Aluminum hull and deck with vertically lifting keel for 1.8-foot raised draft
- Stiff, high-performing cutter rig with 23.29 sail-area-to-displacement ratio
- Modest 39-foot length with 6.73-foot lowered draft and 75-unit rarity
Cons
- Originally small 48-gallon fuel and 85-gallon water capacity with short range
- Low righting capability if capsized and 2.13 capsize ratio
- Only two cabins and one head for six berths
