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Sailboat Specifications for VIPER 640

Rigging and Sails

Rig Type
Fractional Sloop
Listed Sail Area
252sq.ft.
23.41sq.m.

PHRF Rating

High
111
Low
96
Average
99
Source
US Sailing
More Details
Rig Dimensions

Performance Calculations

Maximum Hull Speed
5.85 kts.
Capsize Screening Formula
3.64
Sail Area/Displacement (SA/D)
49.96
(High-Performance Racer)
Displacement/Length (D/L)
46.6
(Light Displacement)
Motion Comfort Ratio
3.24

Note: The performance calculations are theoretical numbers which are calculated off the specifications of the vessel and should be used for educational purposes only. For actual performance statistics contact the manufacturer of the vessel.

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