A Nacra 6.0 NA carries around 265 ft^2 sail upwind and a 350-500 ft spinnakers of the wind. The boat weighs around 430 lbs with spinnaker equipment is 8.5 ft wide and has a 31.5 ft tall mast.
With a min weight crew you have 755 lbs total weight
At present, we don't have any 18ht boats to compare it to in the US, however in my experiance a nacra 6.0 and an A-cat are about the same speed around the buoy's (both non spinnaker)
Having sailed against a very well sailed model, the Marstrom M 20 is much faster then a Nacra 6.0 under all the conditions I have seen.
The CFR 20 is faster upwind/downwind, but not reaching.
Why don't you compare and contrast the sail area to displacement sail carying power to displacement and the wetted surface (estimate) to sail area. Of these two boats. Acording to Bethweite SP? these are the more relavent indicators of a boats speed potential.
Eric
