Sailboat specifications and datasheets

Océanis 370 fin keel

The Océanis 370, here in "fin keel" version, is a 34’10” offshore monohull sailboat designed by Philippe Briand. She was built by Bénéteau (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1989 and 1993 with 217 hulls completed.

The Océanis 370 belongs to the Océanis range. The Océanis 370 is as well listed, on, in version Wing keel.

Bénéteau Océanis 370 Bénéteau Océanis 370 sailplanBénéteau Océanis 370 layoutBénéteau Océanis 370 sailingBénéteau Océanis 370 sailingBénéteau Océanis 370 sailingBénéteau Océanis 370 accommodations
Océanis 370's   Main Features
Model Océanis 370
Version Fin keel
Type of hull Monohull
Category Offshore cruising sailboat
Designer Philippe Briand
Range Océanis
Construction Hull:
monolithic fiberglass / polyester
sandwich balsa / fiberglass / polyester
First built hull 1989
Last built hull 1993
Number of hulls built 217
Appendages Keel :
Fin with bulb
Helm 1 wheel
Rudder 1 spade rudder
Cockpit Open aft cockpit with closing system
Unsinkable No
Trailerable No
French navigation category 1
Standard public price ex. VAT (indicative only) N/A
Océanis 370's   Main dimensions
Length overall 35’ 7”
Hull length 34’ 10”
Waterline length 31’ 7”
Beam (width) 12’ 6”
Draft 5’ 1”
Light displacement 11244 lbs
Ballast weight 4079 lbs
Ballast type Cast iron
French customs tonnage 15.00 Tx
Océanis 370's   Rig and sails
Upwind sail area 689 sq.ft
Mainsail area 291 sq.ft
Genoa area 398 sq.ft
Rigging type Sloop Marconi (in-mast furling mainsail) masthead
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle 0 °
Océanis 370's   Performances
Upwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
36 %
Hull speediAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
7.53 knots
Océanis 370's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 27 HP
Fuel type Diesel
Fuel tank capacity 26.4 gal
Océanis 370's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 4 / 7
Head(s) (min/max) 1 / 2
Fresh water tank capacity 105.7 gal
Fridge/ice-box capacity 31.7 gal
Maximum headroom 6’ 5”

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