|Dufour 28 Mezzo's Main Features|
|Model||Dufour 28 Mezzo|
|Type of hull||Monohull|
|Construction||Hull and deck:
monolithic fiberglass / polyester
|First built hull||1983|
|Last built hull||1988|
|Number of hulls built||140|
Fin without bulb
|Rudder||1 spade rudder|
|Cockpit||Closed aft cockpit|
|French navigation category||2|
|Standard public price ex. VAT (indicative only)||N/A|
|Dufour 28 Mezzo's Main dimensions|
|Hull length||28’ 8”|
|Waterline length||23’ 7”|
|Beam (width)||10’ 5”|
|Mast height from DWL||40’ 6”|
|Light displacement||5997 lbs|
|Ballast weight||2028 lbs|
|Ballast type||Cast iron|
|French customs tonnage||6.80 Tx|
|Dufour 28 Mezzo's Rig and sails|
|Upwind sail area||471 sq.ft|
|Mainsail area||166 sq.ft|
|Genoa area||306 sq.ft|
|Jib area||194 sq.ft|
|Rigging type||Sloop Marconi masthead|
|Mast position||Deck stepped mast|
|Spars||Mast and boom in Aluminum|
|Standing rigging||1x19 strand wire continuous|
|Number of levels of spreaders||1|
|Spreaders angle||0 °|
|IiFore triangle height (from mast foot to fore stay attachment)||34’ 7”|
|JiFore triangle base (from mast foot to bottom of forestay)||11’ 6”|
|PiMainsail hoist measurement (from tack to head)||29’ 6”|
|EiMainsail foot measurement (from tack to clew)||10’|
|Dufour 28 Mezzo's Performances|
|HN (French rating)||15.0|
|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.
|Wetted surface||179 sq.ft|
|Righting moment @ 1°iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after a rotational displacement. Its value corresponds to the torque needed to heel the boat for this angle.
Higher the righting moment is for an angle, greater is the stability at this angle.
|Maximum transverse section||10 sq.ft|
|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 28 Mezzo's Auxiliary engine|
|Engine type||Inboard engine|
|Engine (min/max)||9 HP / 18 HP|
|Fuel tank capacity||13.2 gal|
|Dufour 28 Mezzo's Accommodation|
|Fresh water tank capacity||26.4 gal|
|Fridge/ice-box capacity||18.5 gal|
|Head headroom||5’ 5”|
|Dufour 28 Mezzo's Saloon|
|Maximum headroom||5’ 8”|
|Saloon table length||4’ 8”|
|Saloon table width (min/max)||2’ / 3’ 1”|
|Berth length||6’ 4”|
|Berth width||1’ 8”|
|Dufour 28 Mezzo's Fore cabin|
|Maximum headroom||4’ 7”|
|Dufour 28 Mezzo's Aft cabin|
|Maximum headroom||5’ 5”|
|Berth length||6’ 2”|
|Berth width (head/feet)||4’ 4”