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Sailboat specifications and datasheets

Océanis 381 classic

The Océanis 381, here in "classic" version, is a 37’8” offshore monohull sailboat designed by Jean Berret and Olivier Racoupeau. She was built by Bénéteau (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1996 and 2000 with about 300 hulls completed.

The Océanis 381 belongs to the Océanis range. The Océanis 381 is as well listed, on Boat-Specs.com, in version Furling mainsail.

Bénéteau Océanis 381 Bénéteau Océanis 381 sailplanBénéteau Océanis 381 layoutBénéteau Océanis 381 layoutBénéteau Océanis 381 sailingBénéteau Océanis 381 sailingBénéteau Océanis 381 accommodationsBénéteau Océanis 381 accommodationsBénéteau Océanis 381 accommodations
Océanis 381's   Main Features
Model Océanis 381
Version Classic
Type of hull Monohull
Category Offshore cruising sailboat
Shipyard
Designer Jean Berret
Olivier Racoupeau
Range Océanis
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 1996
Last built hull 2000
Number of hulls built About 300
Appendages Keel :
L-shaped keel (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 381's   Main dimensions
Length overall 38’ 6”
Hull length 37’ 8”
Waterline length 32’ 10”
Beam (width) 12’ 11”
Draft 5’ 4”
Light displacement 14991 lbs
Ballast weight 4740 lbs
French customs tonnage 15.30 Tx
Océanis 381's   Rig and sails
Upwind sail area 750 sq.ft
Downwind sail area 1199 sq.ft
Mainsail area 337 sq.ft
Genoa area 413 sq.ft
Symetric spinnaker area 861 sq.ft
Rigging type Sloop Marconi 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 Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 45’ 5”
JiFore triangle base (from mast foot to bottom of forestay) 13’
PiMainsail hoist measurement (from tack to head) 38’ 6”
EiMainsail foot measurement (from tack to clew) 15’ 1”
Océanis 381'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.
19.42
Downwind 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.
31.02
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.
193
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.
32 %
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.
7.68 knots
Océanis 381's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 30 HP / 42 HP
Fuel type Diesel
Fuel tank capacity 39.6 gal
Océanis 381's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 6 / 8
Head(s) (min/max) 1 / 2
Fresh water tank capacity 126.8 gal
Maximum headroom 6’ 7”
Océanis 381's   Saloon
Maximum headroom 6’ 6”
Océanis 381's   Fore cabin
Berth length 6’ 7”
Berth width (head/feet) 5’ 11”
4’ 11”
Océanis 381's   Aft cabin
Berth length 6’ 7”
Berth width 4’ 1”

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