Dufour 45 Standard

Sailboat specifications

The Dufour 45 is a 44’7” (13.6m) fast cruising sailboat designed by Felci Yachts (Italy). She was built between 2008 and 2010 by Dufour (France).

The Dufour 45 is as well listed, on Boat-Specs.com, in Deep draft version (see all the versions compared).

Dufour 45's main features

Model: Dufour 45
Version: Standard
Hull type: Monohull
Category: Offshore fast cruising sailboat
Sailboat builder: Dufour
Sailboat designer: Felci Yachts
Country: France
Construction: GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich foam fiberglass polyester
First built hull: 2008
Last built hull: 2010
Appendages: Keel : L-shaped keel (with bulb)
Helm: Twin helm wheels
Rudder: Single spade rudder
Unsinkable: No
Trailerable: No
EC design category iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions) A: Wind < force 9, Waves < 10m B: Wind < force 8, Waves < 8m C: Wind < force 6, Waves < 4m D: Wind < force 4, Waves < 0,5m: A
Standard public price ex. VAT (indicative only): About
190 000 €
(2010)

Dufour 45's main dimensions

Hull length: 44’ 7”13.6 m
Waterline length: 39’ 11”12.16 m
Beam (width): 14’ 1”4.3 m
Draft: 6’ 5”1.95 m
Light displacement (M_LC): 23964 lb10870 kg
Ballast weight: 7275 lb3300 kg

Dufour 45's rig and sails

Upwind sail area: 1216 ft²113 m²
Mainsail area: 581 ft²54 m²
Genoa area: 635 ft²59 m²
Rigging type: Sloop Marconi 19/20
Mast configuration: Keel stepped mast
Rotating spars: No
Number of levels of spreaders: 3
Spreaders angle: Swept-back
Spars construction: Aluminum spars

Dufour 45'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.: 248 ft²/T23.03 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.: 171
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.: 30 %
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.: 8.46 knots