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Sailboat specifications and datasheets

Sun Fast 42 lead keel

The Sun Fast 42, here in "lead keel" version, is a 40’10” monohull sailboat designed by Philippe Briand. She was built by Jeanneau (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1996 and 1998 with 25 hulls completed.

The Sun Fast 42 belongs to the Sun Fast range. The Sun Fast 42 is as well listed, on Boat-Specs.com, in version Standard.

Jeanneau Sun Fast 42 Jeanneau Sun Fast 42 sailplanJeanneau Sun Fast 42 layoutJeanneau Sun Fast 42 sailingJeanneau Sun Fast 42 sailingJeanneau Sun Fast 42 accommodations
Sun Fast 42's   Main Features
Model Sun Fast 42
Version Lead keel
Type of hull Monohull
Shipyard
Designer Philippe Briand
Range Sun Fast
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich fiberglass / polyester
First built hull 1996
Last built hull 1998
Number of hulls built 25
Appendages Keel :
Fin with bulb
Helm 1 wheel
Rudder 1 spade rudder
Unsinkable No
Trailerable No
EC certification A
Standard public price (indicative only) N/A
Sun Fast 42's   Main dimensions
Length overall 41’ 8”
Hull length 40’ 10”
Waterline length 35’ 1”
Beam (width) 12’ 10”
Draft 7’ 6”
Light displacement 18739 lbs
Ballast weight 7055 lbs
Ballast type Lead
French customs tonnage 14.33 Tx
Sun Fast 42's   Rig and sails
Upwind sail area 1108 sq.ft
Downwind sail area 1915 sq.ft
Mainsail area 466 sq.ft
Genoa area 642 sq.ft
Symetric spinnaker area 1449 sq.ft
Rigging type Sloop Marconi masthead
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle 8 °
IiFore triangle height (from mast foot to fore stay attachment) 54’ 10”
JiFore triangle base (from mast foot to bottom of forestay) 15’ 5”
PiMainsail hoist measurement (from tack to head) 48’ 2”
EiMainsail foot measurement (from tack to clew) 16’ 8”
Sun Fast 42's   Performances
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.
24.71
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.
42.71
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.
197
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.
38 %
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.
7.94 knots
Sun Fast 42's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 48 HP
Fuel type Diesel
Fuel tank capacity 39.6 gal
Sun Fast 42's   Accommodation
Cabin(s) (min/max) 3 / 4
Berth(s) (min/max) 6 / 8
Head(s) (min/max) 1 / 2
Fresh water tank capacity 92.5 gal
Fridge/ice-box capacity 31.7 gal
Maximum headroom 6’ 8”
Galley headroom 6’ 7”
Head headroom 6’ 1”
Sun Fast 42's   Saloon
Maximum headroom 6’ 2”
Sun Fast 42's   Fore cabin
Maximum headroom 6’ 1”
Berth length 6’ 7”
Berth width 4’ 11”
Sun Fast 42's   Aft cabin
Maximum headroom 6’ 2”
Berth length 6’ 7”
Berth width 4’ 7”

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