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Océanis 320 Fin keel is a Cruising sailboat built by Bénéteau and designed by Philippe Briand. Her first hull was built in 1987 with an overall lengh of 9.6 m or 31.6 ft long and a Deck stepped mast mast configuration.

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BENETEAU OCEANIS 320 FIN KEEL Sailboat Specifications​


Overall Length (LOA) m / ft9.6 m / 31.6 ft
Designer(s)Philippe Briand
VersionFin keel
categoryCruising sailboat
Hull TypeMonohull
Number of Hulls Built359
First Hull Built1987
Last Hull Built1992
AppendagesKeel fin without bulb
HelmSingle tiller
RudderSingle spade rudder
CockpitClosed aft cockpit
Ballast TypeCast iron
Rigging TypeSloop Marconi masthead
Mast LayoutDeck stepped mast
Number of Cabin(s)2
Number of Head(s)1
Freshwater Tank Capacity lt/gal150 L / 39.6 gal
Ballast Ratio30.01


Overall Length (LOA) 9.6 m / 31.6 ft
Hull Length9.25 m / 30.4 ft
Waterline Length (LWL)8.44 m / 27.8 ft
Beam (width)3.26 m / 10.8 ft
Draft1.4 m / 4.7 ft
Light Displacement (MLC) 4000 kg / 8818 lb
Maximum Displacement4000 kg / 8818 lb
Ballast Weight1200 kg / 2646 lb


Critical Hull Speed7.05 knots
Capsize Screening Formula (CSF)2.08
Comfort Ratio20.37
Displacement-Length Ratio (DLR)188
Ballast Ratio30.01
Sail Area to Displacement20.23
Upwind Sail Area to Displacement20.04 m²/T / 216 ft²/T
Downwind Sail Area to Displacement35.32 m²/T / 380 ft²/T

Above Deck

Mast LayoutDeck stepped mast
Mast Height from DWL13.7 m / 44.11 ft
Rotating SparsNo
Number of Levels of Spreaders1
Spreaders Angle0 °
Spars ConstructionAluminum spars
Standing Rigging1x19 strand wire continuous
Reported Sail Area49.98 m² / 538.00 ft²
Upwind Sail Area50.5 m² / 544 ft²
Downwind Sail Area89 m² / 958 ft²
Mainsail Area18.5 m² / 199 ft²
Genoa Area32 m² / 344 ft²

Engine Room

Engine(s)1 inboard engine
Engine(s) Power18 HP
Fuel typeDiesel
Fuel Tank Capacity50 L / 13.2 gal

Below Deck

Fridge Capacity75 L / 19.8 gal
Maximum Headroom6.4 ft * 1.92 m
Head Headroom5.10 ft * 1.78 m
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