Detailed sailboat specifications and datasheets since 2015
MetricSI (m)
Imperial & Metricboth
ImperialIMP (ft)

Dufour A9000 Deep draft

Sailboat specifications

The Dufour A9000 is a 38’11” (11.85m) cruiser-racer sailboat designed by Valentijn Design (Netherlands) and Michel Dufour (France). She was built between 1979 and 1983 by Dufour (France). The Deep draft version displays a deeper fin allowing a lower center of gravity and extra performance especially upwind.

Dufour A9000's main features

Model
Dufour A9000
Version
Deep draft
Hull type
Monohull
Category
Offshore cruiser-racer sailboat
Sailboat builder
Sailboat designer
Country
France
Construction
Hull and deck: aluminum
First built hull
1979
Last built hull
1983
Appendages
Keel : fin without bulb
Helm
Single helm wheel
Rudder
Single spade rudder
Unsinkable
No
Trailerable
No
Former French navigation category
1
Standard public price ex. VAT (indicative only)
N/A

Dufour A9000's main dimensions

Overall length
40’12.2 m
Hull length
38’ 11”11.85 m
Waterline length
31’ 6”9.6 m
Beam (width)
12’ 1”3.7 m
Draft
6’ 8”2.05 m
Light displacement (MLC)
19842 lb9000 kg
Ballast weight
9259 lb4200 kg
Ballast type
Aluminum keel filled with lead

Dufour A9000's rig and sails

Upwind sail area
1027 ft²95.4 m²
Downwind sail area
1707 ft²158.6 m²
Mainsail area
372 ft²34.6 m²
Genoa area
654 ft²60.8 m²
Jib area
422 ft²39.2 m²
Symmetric spinnaker area
1335 ft²124 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
55’ 5”16.9 m
J
 iFore triangle base (from mast foot to bottom of forestay)
15’ 11”4.85 m
P
 iMainsail hoist measurement (from tack to head)
48’ 2”14.7 m
E
 iMainsail foot measurement (from tack to clew)
15’ 1”4.6 m
Rigging type
Sloop Marconi masthead
Mast configuration
Keel stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
0 °
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire

Dufour A9000's performances

HN (French rating)
 iHN or "Handicap Nationale" is an empirical rating system used in France allowing various monohulls, of different sizes and designs, to race each other fairly. It is particularly suitable for cruiser and cruiser-racer. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats.
22.0
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.
237 ft²/T22.05 m²/T
Downwind 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.
395 ft²/T36.66 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.
288
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.
47 %
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.
7.52 knots

Dufour A9000's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
50 HP
Fuel type
Diesel
Fuel tank capacity
60.8 gal230 liters

Dufour A9000's accommodations and layout

Cockpit
Closed aft cockpit
Berth(s) (min./max.)
8 / 9
Freshwater tank capacity
66 gal250 liters

Dufour A9000's saloon

Maximum headroom
6’ 2”1.9 m

Dufour A9000's fore cabin

Maximum headroom
5’ 7”1.7 m

Dufour A9000's aft cabin

Maximum headroom
6’ 2”1.9 m
Have you spotted incorrect data?  You can report it in the forum or contact the webmaster

Similar sailboats that may interest you:


Sailboats
First built hull
Hull length
Grand Soleil 45 - Frers Deep draft (Cantiere Del Pardo)
1988
44’ 1”13.44 m
Dufour 39 Deep draft (Dufour)
1982
38’ 1”11.6 m
Albin Ballad (Albin Marine)
1971
30’9.14 m
Albin Nimbus 42 Race (Albin Marine)
1981
41’ 4”12.6 m
Swan 411 (Nautor's Swan)
1977
40’ 10”12.44 m
Swan 42 Shoal draft (Nautor's Swan)
1980
42’12.8 m
Swan 371 (Nautor's Swan)
1979
36’ 10”11.23 m
First 435 Deep draft (Bénéteau)
1984
44’13.4 m
First 375 Deep draft (Bénéteau)
1985
37’11.27 m
Grand Soleil 37 - B&C Deep draft (Cantiere Del Pardo)
2005
37’ 1”11.3 m
First 38s5 Deep draft (Bénéteau)
1989
37’ 8”11.5 m
First 38 Deep draft (Bénéteau)
1982
38’ 6”11.75 m
First 405 Deep draft (Bénéteau)
1985
39’ 4”11.99 m
Sun Fast 41 Standard (Jeanneau)
1990
40’ 2”12.25 m
Sun Légende 41 Fin keel (Jeanneau)
1985
40’ 2”12.25 m
Boat-Specs.com uses cookies to improve user experience. By using our website you consent to all cookies in accordance with our Cookie Policy.

Read more