Displacement
340kg
749lbs
Ballast
Lead keel bulb 100kg
220lbs
Draft with keel up
33cm
1' 10"
Draft with keel down - fully bolted for sailing
1.37m
4' 6"
Sail Area Main & Jib
23.44 sq. m
252 sq. ft
Sail Area Spinnaker
39.54 sq. m
425 sq. ft
Ideal Weight
Approx 250kg
550lbs
Why choose the Viper 640?
“It’s a perfect balance of dinghy and keelboat”
If you are looking for the perfect compromise between the performance of a dinghy and the stability of a keelboat, the Viper 640 sportsboat is the answer. The Viper enables you to sail as part of a dinghy fleet or enjoy keelboat racing, with a Portsmouth Yardstick number and an IRC rating. This flexibility makes the Viper a clear winner.
