Viper 640
6 / 6890 - score 91%
The Viper 640 is a 21.08ft fractional sloop designed by Brian Bennett and built in fiberglass by Rondar Raceboats since 1996.
400 units have been built.
The Viper 640 is an ultralight sailboat which is a very high performer. It is stable / stiff and has a low righting capability if capsized. It is best suited as a racing boat.
This boat has a good score and ranks in the top quarter. It is an excellent choice.
Viper 640 for sale elsewhere on the web:
Main features
| Model | Viper 640 | ||
| Length | 21.08 ft | ||
| Beam | 8.17 ft | ||
| Draft | 1.83 ft | ||
| Country | United Kingdom (Europe) | ||
| Estimated price | $ 0 | ?? |
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Ratios 86%
| Sail area / displ. | 51.22 (74%) | highest | |
| Ballast / displ. | 26.43 % | ||
| Displ. / length | 44.99 (98%) | lowest | |
| Comfort ratio | 3.35 | ||
| Capsize | 3.68 |
Hull 100%
| Hull type | Monohull lifting keel | mono | |
| Construction | Fiberglass | ||
| Waterline length | 19.08 ft | ||
| Maximum draft | 4.83 ft | ||
| Displacement | 700 lbs | ||
| Ballast | 185 lbs | ||
| Hull speed | 5.85 knots |
We help you build your own hydraulic steering system - Lecomble & Schmitt
Rigging
| Rigging | Fractional Sloop | ||
| Sail area (100%) | 252 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 90.26 sq.ft | ||
| Sail area main | 128.10 sq.ft | ||
| I | 21.67 ft | ||
| J | 8.33 ft | ||
| P | 25.62 ft | ||
| E | 10 ft |
Engine
| Nb engines | 1 | ||
| Total power | 0 HP | ||
| Fuel capacity | 0 gals |
Accommodations
| Water capacity | 0 gals | ||
| Headroom | 0 ft | ||
| Nb of cabins | 0 | ||
| Nb of berths | 0 | ||
| Nb heads | 0 |
Builder data
| Builder | Rondar Raceboats | ||
| Designer | Brian Bennett | ||
| First built | 1996 | ||
| Last built | 0 | ?? | |
| Number built | 400 |
Other photos
