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Sailboat specifications and datasheets

Swan 42 shoal draft

The Swan 42, here in "shoal draft" version, is a 42’ monohull sailboat designed by Ron Holland. She was built by Nautor's Swan (Finland) and made of GRP (glass reinforced polyester). This sailboat was produced between 1980 and 1985 with 38 hulls completed.

The Swan 42 is as well listed, on Boat-Specs.com, in version Standard.

Nautor's Swan Swan 42 Nautor's Swan Swan 42 sailplanNautor's Swan Swan 42 layoutNautor's Swan Swan 42 layout
Swan 42's   Main Features
Model Swan 42
Version Shoal draft
Type of hull Monohull
Category Offshore cruiser-racer sailboat
Shipyard
Designer Ron Holland
Construction GRP (glass reinforced polyester)
First built hull 1980
Last built hull 1985
Number of hulls built 38
Appendages Keel :
Fin without bulb
Helm 1 wheel
Rudder 1 spade rudder
Cockpit Twin cockpit (central and closed aft)
Unsinkable No
Trailerable No
Standard public price ex. VAT (indicative only) N/A
Swan 42's   Main dimensions
Hull length 42’
Waterline length 33’ 11”
Beam (width) 13’
Draft 5’ 11”
Light displacement 20944 lbs
Ballast weight 9039 lbs
Ballast type Lead
Swan 42's   Rig and sails
Upwind sail area 1029 sq.ft
Downwind sail area 1990 sq.ft
Mainsail area 343 sq.ft
Genoa area 686 sq.ft
Symetric spinnaker area 1647 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle 0 °
IiFore triangle height (from mast foot to fore stay attachment) 54’ 11”
JiFore triangle base (from mast foot to bottom of forestay) 16’ 8”
PiMainsail hoist measurement (from tack to head) 48’ 10”
EiMainsail foot measurement (from tack to clew) 14’ 1”
Swan 42's   Performances
IOR rating 32.0
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.
21.31
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.
41.22
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.
244
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.
7.80 knots
Swan 42's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 40 HP
Fuel type Diesel
Fuel tank capacity 42.3 gal
Swan 42's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 7 / 9
Head(s) 1
Fresh water tank capacity 79.3 gal

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