The Océanis 370
is a 34’10” (10.6m) cruising sailboat designed by Philippe Briand
(France). She was built between 1989 and 1993 by Bénéteau
(France) with 217 hulls completed. The Wing keel
version is offered with a short keel fitted with large winglets. This configuration provides an interesting draft / low center of gravity / upwind performance trade-off.
The Océanis 370
is as well listed, on Boat-Specs.com, in Fin keel
version (see all the versions compared
Océanis 370's main features
Offshore cruising sailboat
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
Number of hulls built
First built hull
Last built hull
Keel : wing keel
Single helm wheel
Single spade rudder
Former French navigation category
Standard public price ex. VAT (indicative only)
Océanis 370's main dimensions
35’ 7”10.85 m
34’ 10”10.6 m
31’ 7”9.63 m
12’ 6”3.8 m
4’ 1”1.25 m
Light displacement (MLC)
11244 lb5100 kg
4079 lb1850 kg
French customs tonnage
Océanis 370's rig and sails
Upwind sail area
689 ft²64 m²
291 ft²27 m²
398 ft²37 m²
Sloop Marconi (in-mast furling mainsail) masthead
Deck stepped mast
Number of levels of spreaders
1x19 strand wire
Océanis 370's performances
Upwind sail area to displacement iThe 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 25 it indicates a fast sailboat.
233 ft²/T21.6 m²/T
Displacement-length ratio (DLR) iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The 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 ratio iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.
The higher the ballast ratio is, the greater is the stability.
Critical hull speed iAs 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.
Océanis 370's auxiliary engine
1 inboard engine
Fuel tank capacity
26.4 gal100 liters
Océanis 370's accommodations and layout
Closing aft cockpit with opening system
2 / 3
4 / 7
1 / 2
Freshwater tank capacity
105.7 gal400 liters
31.7 gal120 liters
6’ 5”1.95 m
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