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Sailboat specifications and datasheets

Dufour 1300 fin keel

The Dufour 1300, here in "fin keel" version, is a 23’10” monohull sailboat designed by Michel Dufour. She was built by Dufour (France) and made of sandwich fiberglass / polyester. This sailboat was produced between 1974 and 1975 with about 60 hulls completed.

The Dufour 1300 belongs to the Quarter Tonner class.

Dufour 1300 Dufour 1300 sailplanDufour 1300 layoutDufour 1300 layout
Dufour 1300's   Main Features
Model Dufour 1300
Version Fin keel
Type of hull Monohull
Shipyard
Designer Michel Dufour
Class Quarter Tonner
Construction Hull and deck:
sandwich fiberglass / polyester
First built hull 1974
Last built hull 1975
Number of hulls built About 60
Appendages Keel :
Fin without bulb
Helm 1 tiller
Rudder 1 rudder on skeg
Unsinkable No
Trailerable Yes
French navigation category 3
Standard public price ex. VAT (indicative only) N/A
Dufour 1300's   Main dimensions
Hull length 23’ 10”
Waterline length 18’
Beam (width) 8’ 8”
Draft 4’ 11”
Light displacement 2866 lbs
Ballast weight 1257 lbs
Ballast type Cast iron
Dufour 1300's   Rig and sails
Upwind sail area 316 sq.ft
Downwind sail area 620 sq.ft
Mainsail area 104 sq.ft
Genoa area 212 sq.ft
Solent area 168 sq.ft
Jib area 125 sq.ft
Symetric spinnaker area 516 sq.ft
Rigging type Sloop Marconi masthead
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle Swept-back
PiMainsail hoist measurement (from tack to head) 24’ 10”
EiMainsail foot measurement (from tack to clew) 7’ 7”
Dufour 1300's   Performances
HN (French rating) 12.0
IOR rating 18.0
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.
24.63
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.
48.34
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.
221
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.
44 %
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.
5.69 knots
Dufour 1300's   Auxiliary engine
Engine type Outboard engine
Engine 8 HP
Fuel type Gas
Dufour 1300's   Accommodation
Berth(s) 2
Maximum headroom 4’ 4”

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