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Sailboat specifications and datasheets

Nacra Inter 20

The Nacra Inter 20 is a 20’ double handed beach catamaran designed by Gino Morrelli and Pete Melvin. She was built by Nacra (United States) and made of sandwich foam / fiberglass / vinylester. This sailboat was produced between 1998 and 2001.

The Nacra Inter 20 belongs to the Formula 20 class.

Nacra Inter 20 Nacra Inter 20 sailingNacra Inter 20 sailing
Nacra Inter 20's   Main Features
Model Nacra Inter 20
Type of hull Catamaran
Shipyard
Designer Gino Morrelli
Pete Melvin
Class Formula 20
Construction Hulls and deck:
sandwich foam / fiberglass / vinylester
First built hull 1998
Last built hull 2001
Appendages Centerboard :
Twin daggerboards
Helm 1 tiller
Rudder 2 transom hung rudders
Unsinkable No
Trailerable Yes
EC certification C
Standard public price (indicative only) N/A
Nacra Inter 20's   Main dimensions
Hull length 20’
Beam (width) 8’ 6”
Draft 3’ 4”
Draft when appendages up 0’ 6”
Light displacement 419 lbs
Nacra Inter 20's   Rig and sails
Upwind sail area 246 sq.ft
Downwind sail area 463 sq.ft
Mainsail area 194 sq.ft
Jib area 52 sq.ft
Asymetric spinnaker area 269 sq.ft
Rigging type Sloop Marconi fractional
Rotating spars Yes
Mast position Fore beam stepped mast
Spars Mast in Carbon fiber and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle Swept-back (diamond)
IiFore triangle height (from mast foot to fore stay attachment) 20’ 11”
PiMainsail hoist measurement (from tack to head) 29’ 2”
Nacra Inter 20's   Performances
Crew 2
Trapezes 2 set(s)
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.
69.14
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.
130.11

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