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Sailboat specifications and datasheets

Dufour 56 Exclusive shoal draft

The Dufour 56 Exclusive, here in "shoal draft" version, is a 53’6” monohull sailboat designed by Umberto Felci. She was built by Dufour (France) and made of sandwich fiberglass / polyester. The production started in 2016 .

The Dufour 56 Exclusive belongs to the Exclusive range. The Dufour 56 Exclusive is as well listed, on Boat-Specs.com, in version Standard.

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Dufour 56 Exclusive's   Main Features
Model Dufour 56 Exclusive
Version Shoal draft
Type of hull Monohull
Category Offshore cruising sailboat
Shipyard
Designer Umberto Felci
Range Exclusive
Construction Hull and deck:
sandwich fiberglass / polyester
First built hull 2016
Last built hull Still in production
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
395 000
(2017)
Dufour 56 Exclusive's   Main dimensions
Length overall 56’ 4”
Hull length 53’ 6”
Waterline length 49’ 10”
Beam (width) 16’ 7”
Draft 7’ 2”
Light displacement 38856 lbs
Ballast weight 10803 lbs
Ballast type Cast iron
Dufour 56 Exclusive's   Rig and sails
Upwind sail area 1525 sq.ft
Mainsail area 782 sq.ft
Genoa area 743 sq.ft
Rigging type Sloop Marconi 9/10
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 67’
JiFore triangle base (from mast foot to bottom of forestay) 20’ 4”
PiMainsail hoist measurement (from tack to head) 65’ 7”
EiMainsail foot measurement (from tack to clew) 20’ 4”
Dufour 56 Exclusive'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.
20.92
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.
143
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.
9.45 knots
Dufour 56 Exclusive's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 110 HP / 150 HP
Fuel type Diesel
Dufour 56 Exclusive's   Accommodation
Fresh water tank capacity 179.6 gal
Water heater capacity 13.2 gal
Fridge/ice-box capacity 51.5 gal
Dufour 56 Exclusive's   Saloon
Berth length 6’ 11”
Dufour 56 Exclusive's   Fore cabin
Berth length 6’ 7”
Berth width 5’ 2”
Dufour 56 Exclusive's   Aft cabin
Berth length 6’ 6”
Berth width 6’ 5”

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