VIPER 640 Detailed Review

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
# Built:400
Designers:Brian Bennett
LWL:5.82 m / 19.09 ft

Sail Boat Calculation

Comfort Ratio:3.35
Capsize Screening Formula:3.68

Rig And Sail Specs

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


Builders:Rondar Raceboats
Designers:Brian Bennett


Who designed the VIPER 640?

VIPER 640 was designed by Brian Bennett.

Who builds VIPER 640?

VIPER 640 is built by Rondar Raceboats.

When was VIPER 640 first built?

VIPER 640 was first built in 1996.

How long is VIPER 640?

VIPER 640 is 5.82 m in length.

What is mast height on VIPER 640?

VIPER 640 has a mast height of 7.81 m.

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