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Sailboat specifications and datasheets

Lacoste 42

The Lacoste 42 is a 41’1” offshore monohull sailboat designed by Olin Stephens. She was built by Dufour (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1985 and 1992.

The Lacoste 42 has also been marketed as Dufour 42.

Dufour Lacoste 42 Dufour Lacoste 42 sailplanDufour Lacoste 42 layoutDufour Lacoste 42 layoutDufour Lacoste 42 sailingDufour Lacoste 42 sailing
Lacoste 42's   Main Features
Model Lacoste 42
Type of hull Monohull
Shipyard
Designer Olin Stephens
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 1985
Last built hull 1992
Appendages Keel :
Fin without bulb
Helm 1 wheel
Rudder 1 spade rudder
Unsinkable No
Trailerable No
French navigation category 1
Standard public price (indicative only) N/A
Lacoste 42's   Main dimensions
Length overall 42’ 2”
Hull length 41’ 1”
Waterline length 35’ 10”
Beam (width) 13’
Draft 7’ 6”
Mast height from DWL 56’ 10”
Light displacement 16535 lbs
Ballast weight 7121 lbs
Ballast type Lead
Lacoste 42's   Rig and sails
Upwind sail area 969 sq.ft
Downwind sail area 1911 sq.ft
Mainsail area 382 sq.ft
Genoa area 587 sq.ft
Symetric spinnaker area 1528 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 3
Spreaders angle 0 °
IiFore triangle height (from mast foot to fore stay attachment) 52’ 6”
JiFore triangle base (from mast foot to bottom of forestay) 29’ 6”
PiMainsail hoist measurement (from tack to head) 46’ 1”
EiMainsail foot measurement (from tack to clew) 14’ 4”
Lacoste 42's   Performances
HN (French rating) 24.0
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.
23.49
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.
46.33
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.
164
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.
43 %
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.
8.01 knots
Lacoste 42's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 43 HP
Fuel type Diesel
Fuel tank capacity 42.3 gal
Lacoste 42's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 6 / 10
Head(s) 3
Fresh water tank capacity 105.7 gal
Maximum headroom 6’ 5”

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