The Dufour 45 is as well listed, on Boat-Specs.com, in version Standard.
|Dufour 45's Main Features|
|Type of hull||Monohull|
|Category||Offshore fast cruising sailboat|
monolithic fiberglass / polyester
sandwich foam / fiberglass / polyester
|First built hull||2008|
|Last built hull||2010|
L-shaped keel (with bulb)
|Rudder||1 spade rudder|
|Cockpit||Open aft cockpit with closing system|
|Standard public price ex. VAT (indicative only)||About
190 000 €(2010)
|Dufour 45's Main dimensions|
|Hull length||44’ 7”|
|Waterline length||39’ 11”|
|Beam (width)||14’ 1”|
|Light displacement||23457 lbs|
|Ballast weight||6834 lbs|
|Dufour 45's Rig and sails|
|Upwind sail area||1216 sq.ft|
|Mainsail area||581 sq.ft|
|Genoa area||635 sq.ft|
|Rigging type||Sloop Marconi 19/20|
|Mast position||Keel stepped mast|
|Spars||Mast and boom in Aluminum|
|Number of levels of spreaders||3|
|Dufour 45'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.
|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.
|Dufour 45's Auxiliary engine|
|Engine type||Inboard engine|
|Fuel tank capacity||66 gal|
|Dufour 45's Accommodation|
|Cabin(s) (min/max)||3 / 4|
|Berth(s) (min/max)||6 / 10|
|Fresh water tank capacity||137.4 gal|
|Maximum headroom||6’ 8”|
|Dufour 45's Saloon|
|Maximum headroom||6’ 5”|
|Saloon table length||4’|
|Saloon table width||3’ 7”|
|Dufour 45's Fore cabin|
|Maximum headroom||6’ 4”|
|Berth length||6’ 7”|
|Berth width||5’ 7”|
|Dufour 45's Aft cabin|
|Maximum headroom||6’ 8”|
|Berth length||6’ 6”|
|Berth width||4’ 4”|