Detailed sailboat specifications and datasheets since 2015
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Océanis 370 Wing keel

Sailboat specifications

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

Model
Océanis 370
Version
Wing keel
Hull type
Monohull
Category
Offshore cruising sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
Number of hulls built
217
First built hull
1989
Last built hull
1993
Appendages
Keel : wing keel
Helm
Single helm wheel
Rudder
Single spade rudder
Unsinkable
No
Trailerable
No
Former French navigation category
1
Standard public price ex. VAT (indicative only)
N/A

Océanis 370's main dimensions

Overall length
35’ 7”10.85 m
Hull length
34’ 10”10.6 m
Waterline length
31’ 7”9.63 m
Beam (width)
12’ 6”3.8 m
Draft
4’ 1”1.25 m
Light displacement (MLC)
11244 lb5100 kg
Ballast weight
4079 lb1850 kg
Ballast type
Cast iron
French customs tonnage
15.00 Tx

Océanis 370's rig and sails

Upwind sail area
689 ft²64 m²
Mainsail area
291 ft²27 m²
Genoa area
398 ft²37 m²
Rigging type
Sloop Marconi (in-mast furling mainsail) masthead
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
0 °
Spars construction
Aluminum spars
Standing rigging
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.
162
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.
36 %
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.
7.53 knots

Océanis 370's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
27 HP
Fuel type
Diesel
Fuel tank capacity
26.4 gal100 liters

Océanis 370's accommodations and layout

Cockpit
Closing aft cockpit with opening system
Cabin(s) (min./max.)
2 / 3
Berth(s) (min./max.)
4 / 7
Head(s) (min./max.)
1 / 2
Freshwater tank capacity
105.7 gal400 liters
Fridge/ice-box capacity
31.7 gal120 liters
Maximum headroom
6’ 5”1.95 m
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