If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats,
then here is a complete review of VIPER 640. Built by Rondar Raceboats and designed by Brian Bennett, the boat
was first built in 1996. It has a hull type of Lifting Keel and LOA is 6.43. Its sail area/displacement
ratio 51.22. Its auxiliary power tank, manufactured by undefined, runs on undefined.
VIPER 640 has retained its value as a result of superior building, a solid reputation, and a devoted owner base.
Read on to find out more about VIPER 640 and decide if it is a fit for your boating needs.
Boat Information
Boat Specifications
LOA:6.43 m / 21.10 ft
Rigging Type:Fractional Sloop
Hull Type:Lifting Keel
S.A. (reported):23.41 m2 / 251.98 ft2
Draft (max):1.47 m / 4.82 ft
Displacement:318 kg / 701.07 lbs
Ballast:84 kg / 185.19 lbs
S.A./Disp.:51.22
Bal./Disp.:26.43
Disp./Len.:44.99
Construction:FG
# Built:400
Designers:Brian Bennett
LWL:5.82 m / 19.09 ft
Sail Boat Calculation
Definitions
Comfort Ratio:3.35
Capsize Screening Formula:3.68
Rig And Sail Specs
Help?
I:6.61 m / 21.69 ft
S.A. Fore:7.81 m / 25.62 ft
E:3.05 m / 10.01 ft
S.A. Fore:8.39 m2 / 90.31 ft2
S.A. Main:11.9 m2 / 128.09 ft2
S.A. Total (100% Fore + Main Triangles)20.29 m2 / 218.40 ft2