Detailed sailboat specifications and datasheets since 2015
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Sun Fast 42 Standard

Sailboat specifications

The Sun Fast 42 is a 40’10” (12.45m) cruiser-racer sailboat designed by Philippe Briand (France). She was built between 1996 and 1998 by Jeanneau (France) with 25 hulls completed.

The Sun Fast 42 is as well listed, on Boat-Specs.com, in Lead keel version (see all the versions compared).

Sun Fast 42's main features

Model
Sun Fast 42
Version
Standard
Hull type
Monohull
Category
Offshore cruiser-racer sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich fiberglass polyester
Number of hulls built
25
First built hull
1996
Last built hull
1998
Appendages
Keel : L-shaped keel (with bulb)
Helm
Single helm wheel
Rudder
Single spade rudder
Unsinkable
No
Trailerable
No
EC design category
 iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions)

A: Wind < force 9, Waves < 10m
B: Wind < force 8, Waves < 8m
C: Wind < force 6, Waves < 4m
D: Wind < force 4, Waves < 0,5m
A
Standard public price ex. VAT (indicative only)
N/A

Sun Fast 42's main dimensions

Overall length
41’ 8”12.7 m
Hull length
40’ 10”12.45 m
Waterline length
35’ 1”10.69 m
Beam (width)
12’ 10”3.91 m
Draft
7’ 6”2.3 m
Light displacement (MLC)
18960 lb8600 kg
Ballast weight
7275 lb3300 kg
Ballast type
Cast iron
French customs tonnage
14.33 Tx

Sun Fast 42's rig and sails

Upwind sail area
1108 ft²102.9 m²
Downwind sail area
1915 ft²177.9 m²
Mainsail area
466 ft²43.3 m²
Genoa area
642 ft²59.6 m²
Symmetric spinnaker area
1449 ft²134.6 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
54’ 10”16.7 m
J
 iFore triangle base (from mast foot to bottom of forestay)
15’ 5”4.68 m
P
 iMainsail hoist measurement (from tack to head)
48’ 2”14.7 m
E
 iMainsail foot measurement (from tack to clew)
16’ 8”5.1 m
Rigging type
Sloop Marconi masthead
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
8 °
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire

Sun Fast 42's performances

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.
264 ft²/T24.51 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.
456 ft²/T42.38 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.
199
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.
38 %
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.
7.94 knots

Sun Fast 42's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
48 HP
Fuel type
Diesel
Fuel tank capacity
39.6 gal150 liters

Sun Fast 42's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s) (min./max.)
3 / 4
Berth(s) (min./max.)
6 / 8
Head(s) (min./max.)
1 / 2
Freshwater tank capacity
92.5 gal350 liters
Fridge/ice-box capacity
31.7 gal120 liters
Maximum headroom
6’ 8”2.05 m
Galley headroom
6’ 7”2 m
Head headroom
6’ 1”1.85 m

Sun Fast 42's saloon

Maximum headroom
6’ 2”1.9 m

Sun Fast 42's fore cabin

Maximum headroom
6’ 1”1.85 m
Berth length
6’ 7”2 m
Berth width
4’ 11”1.5 m

Sun Fast 42's aft cabin

Maximum headroom
6’ 2”1.9 m
Berth length
6’ 7”2 m
Berth width
4’ 7”1.4 m
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