Sailboat specifications and datasheets

Océanis 400 shoal draft

The Océanis 400, here in "shoal draft" version, is a 39’10” offshore monohull sailboat designed by Jean Marie Finot and Pascal Conq. She was built by Bénéteau (France) and made of GRP (glass reinforced polyester). This sailboat was produced between 1991 and 1997 with 474 hulls completed.

The Océanis 400 belongs to the Océanis range. The Océanis 400 is as well listed, on, in version Deep draft.

Bénéteau Océanis 400 Bénéteau Océanis 400 sailplanBénéteau Océanis 400 layoutBénéteau Océanis 400 layoutBénéteau Océanis 400 layoutBénéteau Océanis 400 sailingBénéteau Océanis 400 sailingBénéteau Océanis 400 cockpitBénéteau Océanis 400 accommodationsBénéteau Océanis 400 accommodationsBénéteau Océanis 400 accommodationsBénéteau Océanis 400 accommodations
Océanis 400's   Main Features
Model Océanis 400
Version Shoal draft
Type of hull Monohull
Category Cruising sailboat
Designer Jean Marie Finot
Pascal Conq
Range Océanis
Construction GRP (glass reinforced polyester)
First built hull 1991
Last built hull 1997
Number of hulls built 474
Appendages Keel :
L-shaped keel (with bulb)
Helm 1 wheel
Rudder 1 spade rudder
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
French navigation category 1
Standard public price ex. VAT (indicative only) N/A
Océanis 400's   Main dimensions
Hull length 39’ 10”
Waterline length 34’ 11”
Beam (width) 12’ 10”
Draft 4’ 8”
Mast height from DWL 53’
Light displacement 16001 lbs
Ballast weight 5600 lbs
Ballast type Cast iron
Océanis 400's   Rig and sails
Upwind sail area 883 sq.ft
Mainsail area 377 sq.ft
Genoa area 506 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 discontinuous
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 48’ 2”
JiFore triangle base (from mast foot to bottom of forestay) 13’ 6”
PiMainsail hoist measurement (from tack to head) 42’ 4”
EiMainsail foot measurement (from tack to clew) 15’ 8”
Océanis 400'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.
35 %
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.
7.92 knots
Océanis 400's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 50 HP
Fuel type Diesel
Fuel tank capacity 39.6 gal
Océanis 400's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 4 / 8
Head(s) 2
Fresh water tank capacity 140 gal
Maximum headroom 6’ 5”

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