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Sailboat specifications and datasheets

Dufour 40E Performance

The Dufour 40E Performance is a 39’4” monohull sailboat designed by Umberto Felci. She was built by Dufour (France) and made of monolithic bottom, sandwich sides and deck: PVC / fiberglass / polyester vaccum bagged. This sailboat was produced between 2010 and 2017.
Dufour 40E Performance Dufour 40E Performance sailplanDufour 40E Performance layoutDufour 40E Performance layoutDufour 40E Performance layoutDufour 40E Performance sailingDufour 40E Performance sailingDufour 40E Performance accommodationsDufour 40E Performance accommodationsDufour 40E Performance accommodations
Dufour 40E Performance's   Main Features
Model Dufour 40E Performance
Type of hull Monohull
Category Cruiser-racer sailboat
Shipyard
Designer Umberto Felci
Construction Hull:
monolithic bottom, sandwich sides and deck: PVC / fiberglass / polyester vaccum bagged
Deck:
sandwich Nomex / fiberglass / polyester (injection molding process)
First built hull 2010
Last built hull 2017
Appendages Keel :
L-shaped keel (with bulb)
Helm 2 wheels
Rudder 1 spade rudder
Cockpit Open aft cockpit with closing system
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) About
171 000
(2016)
Dufour 40E Performance's   Main dimensions
Length overall 40’ 6”
Hull length 39’ 4”
Waterline length 35’ 4”
Beam (width) 12’ 10”
Draft 6’ 11”
Mast height from DWL 58’ 7”
Light displacement 18794 lbs
Ballast weight 5260 lbs
Dufour 40E Performance's   Rig and sails
Upwind sail area 950 sq.ft
Downwind sail area 1733 sq.ft
Mainsail area 484 sq.ft
Genoa area 466 sq.ft
Symetric spinnaker area 1249 sq.ft
Rigging type Sloop Marconi 9/10
Rotating spars No
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Standing rigging Dyform discontinuous
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 48’ 1”
JiFore triangle base (from mast foot to bottom of forestay) 13’ 10”
PiMainsail hoist measurement (from tack to head) 47’ 1”
EiMainsail foot measurement (from tack to clew) 17’ 11”
Dufour 40E Performance'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.
21.16
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.
38.58
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.
194
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.
28 %
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.
7.96 knots
Dufour 40E Performance's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 40 HP
Fuel type Diesel
Fuel tank capacity 52.8 gal
Dufour 40E Performance's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 6 / 8
Head(s) (min/max) 1 / 2
Fresh water tank capacity 100.4 gal
Maximum headroom 6’ 5”
Dufour 40E Performance's   Saloon
Maximum headroom 6’ 2”
Dufour 40E Performance's   Fore cabin
Berth length 6’ 7”
Berth width 4’ 7”
Dufour 40E Performance's   Aft cabin
Berth length 6’ 7”
Berth width 4’ 5”

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