VIPER 640
Hull
Lifting Keel
Rigging
Fractional Sloop
LOA
21,08 ft i.e. 6,43 m
LWL
19,08 ft i.e. 5,82 m
Sail Area
252 ft² i.e. 23,41 m²
Beam
8,17 ft i.e. 2,49 m
Displacement
700 lb i.e. 318 kg
Ballast
185 lb i.e. 84 kg
Max Draft
4,83 ft i.e. 1,47 m
Construction
Fiberglass
Ballast Type
N/A
Last Built
400
Maker
N/A
Design
Brian Bennett
Blue Water Value Rank (BWVR)
7920
Blue Water Surf Value Rank (BWSVR)
8123
Capsize Comfort Value Rank (CCVR)
8307
Capsize Screening Formula Rank (CSFR)
8292
Comfort Ratio Rank (CRR)
8218
Make
N/A
Type
N/A
Fuel
N/A
Water
N/A
Headroom
N/A
S.A. / Displ.
51,22
Bal. / Displ.
26,43
Displ. / Length
44,99
Hull Speed
5,85 kt
Pounds/Inch Immersion
556,99 pounds/inch
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