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Sailboat Specifications

Ovni 35

Masthead Sloop · Keel/Cbrd.

Designed by Philippe Briand · Built by Alubat (Fra) · First built 1980

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LOA 36.75 ft  ·  Beam 11.81 ft  ·  Displacement 11,905.00 lb  ·  Sail Area 518.28 ft²  ·  Masthead Sloop  ·  Keel/Cbrd.
About the Ovni 35 Sailboat

Designed by Philippe Briand and built by French yard Alubat from 1980 to 1988, this distinctive 36.75-foot sailboat represents an early example of the innovative swing-keel concept that would become Alubat's signature. The aluminum construction provides exceptional durability and corrosion resistance, making it particularly well-suited for extended cruising and coastal exploration. The Ovni 35's most notable characteristic is its retractable centerboard configuration, which reduces draft significantly when raised, allowing access to shallow anchorages and beaches that remain off-limits to traditional fixed-keel vessels. This versatility makes it an excellent choice for coastal cruising, particularly in areas with varying depths or tidal ranges. With a displacement of 11,905 pounds and generous beam of 11.81 feet, the boat offers good interior volume and stability. The moderate sail area of 518.28 square feet on a masthead sloop rig provides manageable sail handling for cruising couples. A comfort ratio of 22.15 suggests reasonable motion at sea, while the capsize screening value of 2.07 indicates adequate stability for offshore passages. The 30-horsepower engine provides sufficient auxiliary power for maneuvering in tight quarters. This French-built cruiser appeals to sailors seeking adventure cruising capabilities with the flexibility to explore both deep and shallow waters.

Dimensions & Specifications
LOA (Length Overall) 36.75 ft / 11.20 m
LWL (Waterline Length) 28.54 ft / 8.70 m
Beam 11.81 ft / 3.60 m
Max Draft 6.72 ft / 2.05 m
Min Draft 1.80 ft / 0.55 m
Displacement 11,905.00 lb / 5,400 kg
Ballast 4,850.00 lb / 2,200 kg
Sail Area (Reported) 518.28 ft² / 48.15 m²
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Masthead Sloop
Construction Aluminium
Designer Philippe Briand
Builder Alubat (FRA)
First Built 1980
Last Built 1988
Associations Alubat Ovni Club
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Engine & Accommodations
Engine Make Nanni
Engine Type Diesel
Horsepower 30
Fuel Capacity 28 gals / 105 L
Water Capacity 53 gals / 200 L
Frequently Asked Questions

What is the Ovni 35's sail area to displacement ratio?

The Ovni 35 has a Sail Area to Displacement ratio (SA/D) of 15.96. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Ovni 35's comfort ratio?

The Ovni 35 has a Ted Brewer Comfort Ratio of 22.15. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Ovni 35 safe for offshore sailing?

The Ovni 35 has a Capsize Screening Formula value of 2.07. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Ovni 35?

The theoretical hull speed of the Ovni 35 is 7.16 kn knots, calculated from its waterline length.

How much does a Ovni 35 weigh?

The Ovni 35 has a displacement of 11,905.00 lb and a length overall (LOA) of 36.75 ft.

Who designed the Ovni 35?

The Ovni 35 was designed by Philippe Briand, first built in 1980.