Nacra Inter 18

Sailboat specifications

The Nacra Inter 18 is a 18’1” (5.52m) double handed sport/beach catamaran designed by Morrelli & Melvin (United States). She was built between 1996 and 2002 by Nacra (United States).

Nacra Inter 18's main features

Model: Nacra Inter 18
Hull type: Catamaran
Category: Double handed sport/beach catamaran
Sailboat builder: Nacra
Sailboat designer: Morrelli & Melvin
Sailboat collection: F18
Country: United States
Construction: GRP (glass reinforced polyester):
Sandwich foam fiberglass vinylester
First built hull: 1996
Last built hull: 2002
Appendages: Centerboard : twin daggerboards
Helm: Single tiller
Rudder: Twin transom hung rudders
Unsinkable: No
Trailerable: Yes
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: C
Standard public price ex. VAT (indicative only): N/A €

Nacra Inter 18's main dimensions

Hull length: 18’ 1”5.52 m
Waterline length: 18’5.5 m
Beam (width): 8’ 6”2.6 m
Light displacement (M_LC): 397 lb180 kg

Nacra Inter 18's rig and sails

Upwind sail area: 228 ft²21.15 m²
Downwind sail area: 409 ft²38 m²
Mainsail area: 183 ft²17 m²
Jib area: 45 ft²4.15 m²
Asymmetric spinnaker area: 226 ft²21 m²
I iFore triangle height (from mast foot to fore stay top attachment): 18’ 10”5.73 m
P iMainsail hoist measurement (from tack to head): 28’8.53 m
Rigging type: Sloop Marconi fractional
Mast configuration: Fore beam stepped mast
Rotating spars: Yes
Number of levels of spreaders: 1
Spreaders angle: Swept-back (diamond)
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire continuous

Nacra Inter 18's performances

Crew: 2
Trapezes: 2 set(s)
PY (Portsmouth Yardstick) rating iPortsmouth Yardstick is an empirical rating system allowing small sailboats (dinghies included), of different sizes and designs, to race each other fairly. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats.: 693
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.: 714 ft²/T66.34 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.: 1283 ft²/T119.2 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.: 31