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Sailboat specifications and datasheets

Dufour 2800 deep draft

The Dufour 2800, here in "deep draft" version, is a 27’ monohull sailboat designed by Michel Dufour. She was built by Dufour (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1977 and 1983 with about 1500 hulls completed.
Dufour 2800 Dufour 2800 sailplanDufour 2800 layoutDufour 2800 sailingDufour 2800 accommodations
Dufour 2800's   Main Features
Model Dufour 2800
Version Deep draft
Type of hull Monohull
Shipyard
Designer Michel Dufour
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 1977
Last built hull 1983
Number of hulls built About 1500
Appendages Keel :
Fin without bulb
Helm 1 tiller
Rudder 1 spade rudder
Unsinkable No
Trailerable No
French navigation category 2
Standard public price (indicative only) N/A
Dufour 2800's   Main dimensions
Length overall 27’ 8”
Hull length 27’
Waterline length 23’ 6”
Beam (width) 9’ 4”
Waterline beam (width) 8’ 1”
Draft 5’
Mast height from DWL 37’ 5”
Fore freeboard 3’ 8”
Mid-ship freeboard 3’ 2”
Light displacement 5842 lbs
Maximum displacement 7253 lbs
Ballast weight 1984 lbs
Ballast type Cast iron
French customs tonnage 7.11 Tx
Dufour 2800's   Rig and sails
Upwind sail area 436 sq.ft
Downwind sail area 737 sq.ft
Mainsail area 156 sq.ft
Genoa area 280 sq.ft
Jib area 184 sq.ft
Stormjib area 43 sq.ft
Symetric spinnaker area 581 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) 32’ 10”
JiFore triangle base (from mast foot to bottom of forestay) 10’ 11”
PiMainsail hoist measurement (from tack to head) 28’ 1”
EiMainsail foot measurement (from tack to clew) 9’ 6”
Dufour 2800's   Performances
IOR rating 20.4
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.
35.76
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.
205
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.
34 %
Wetted surface 167 sq.ft
Maximum transverse section 13 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.
6.49 knots
Dufour 2800's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 8 HP / 16 HP
Fuel type Diesel
Fuel tank capacity 10.6 gal
Dufour 2800's   Accommodation
Cabin(s) 1
Berth(s) 5
Head(s) 1
Fresh water tank capacity 34.3 gal
Chart table 2’ 10” x 2’ 1”
Maximum headroom 6’
Head headroom 5’ 10”
Dufour 2800's   Saloon
Maximum headroom 5’ 11”
Saloon table length 3’ 1”
Saloon table width 3’
Saloon width 9’ 2”
Berth length 6’ 4”
Berth width (head/elbows/knees/feet) 1’ 11”
Dufour 2800's   Fore cabin
Maximum headroom 5’ 7”
Berth length 6’ 7”
Berth width (head/elbows/knees/feet) 6’ 7”
4’ 8”
2’ 8”
0’ 10”
Dufour 2800's   Aft cabin
Berth length 6’
Berth width (head/elbows/knees/feet) 2’

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