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Sailboat specifications and datasheets

Bénéteau R/C 42 shoal draft

The Bénéteau R/C 42, here in "shoal draft" version, is a 41’11” offshore monohull sailboat designed by German Frers. She was built by Bénéteau (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1981 and 1985.

The Bénéteau R/C 42 has also been marketed as First 42 and is as well listed, on Boat-Specs.com, in version S / Deep draft.

Bénéteau R/C 42 Bénéteau R/C 42 sailplanBénéteau R/C 42 layoutBénéteau R/C 42 sailingBénéteau R/C 42 sailingBénéteau R/C 42 cockpitBénéteau R/C 42 accommodations
Bénéteau R/C 42's   Main Features
Model Bénéteau R/C 42
Version Shoal draft
Type of hull Monohull
Category Offshore cruiser-racer sailboat
Shipyard
Designer German Frers
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 1981
Last built hull 1985
Appendages Keel :
Fin without bulb
Helm 1 wheel
Rudder 1 spade rudder
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
French navigation category 1
Standard public price ex. VAT (indicative only) N/A
Bénéteau R/C 42's   Main dimensions
Length overall 43’ 4”
Hull length 41’ 11”
Waterline length 36’ 2”
Beam (width) 13’ 1”
Waterline beam (width) 11’ 2”
Draft 5’ 7”
Mast height from DWL 57’ 4”
Fore freeboard 4’ 1”
Mid-ship freeboard 3’ 6”
Light displacement 20944 lbs
Maximum displacement 22377 lbs
Ballast weight 7937 lbs
Ballast type Cast iron
French customs tonnage 16.14 Tx
Bénéteau R/C 42's   Rig and sails
Upwind sail area 1057 sq.ft
Downwind sail area 1886 sq.ft
Mainsail area 379 sq.ft
Genoa area 678 sq.ft
Solent area 484 sq.ft
Jib area 353 sq.ft
Stormjib area 154 sq.ft
Symetric spinnaker area 1507 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 52’ 10”
JiFore triangle base (from mast foot to bottom of forestay) 16’ 8”
PiMainsail hoist measurement (from tack to head) 46’ 7”
EiMainsail foot measurement (from tack to clew) 14’ 7”
Bénéteau R/C 42's   Performances
HN (French rating) 25.5
IOR rating 32.7
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.
21.89
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.
39.06
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.
200
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 %
Wetted surface 375 sq.ft
Maximum transverse section 21 sq.ft
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.
8.06 knots
Bénéteau R/C 42's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 50 HP
Fuel type Diesel
Fuel tank capacity 39.6 gal
Bénéteau R/C 42's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 6 / 8
Head(s) (min/max) 1 / 2
Fresh water tank capacity 105.7 gal
Water heater capacity 11.1 gal
Maximum headroom 6’ 4”

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