Viper 640

International Class Association
  • Why Viper
    • About Viper 640
    • Design
    • FAQs
    • How it Compares
    • What people are saying
    • Sailing Tips
    • Ratings
  • Boats + Sails
    • Demo Sails
    • How to Buy
    • The Builder
    • Used Boats
    • Sailmakers / Parts Suppliers
    • Tuning Guide
  • Class
    • About the Class
    • Constitution & Bylaws
    • Class Rules
    • Sail Registration
    • Bow Numbers
    • Electronic Devices
    • Join the Class
    • Class Officers
    • Class Newsletter
    • Major Championships
    • Find a Fleet
  • Events
  • Media
    • Video
    • Photos – The Boat
    • Photos – Events
    • News
    • Logos
  • Forum
Close downwind racing in NA's during breeze in Kingston, Ontario
World champ Zeke Horowitz heads downwind
Two four person teams lead at a mark rounding in Bermuda
A very competitive starting line at the Worlds
Brand new Viper640 being lifted off its trailer
50+ Vipers racing downwind at the North Americans in Larchmont, NY
Ramping launching is a cinch with the keel hoist in palce
Spinnaker hoist
Driving upwind in Bermuda
Making the mark in Bermuda
The Viper 640 can easily be towed behind most any vehicle
Pink Storm leading the Viper 640 Class downwind during Bacardi Newport Sailing Week
Class technical chair Dave Nickerson heads downwind in Vermont
Send it!
Find a Fleet Near You

With World Sailing recognition, Vipers are being shipped globally.

Get In Touch

Contact Class Leaders, Find a demo boat or contact the builder for new sales.

Viper 640 Outline Drawing
Check Out The Boat

Easy to get sailing and up to speed, yet all the one design competition you can handle.




© 2025 Viper 640 Class Association. Viper 640 and the Class logo are registered trademarks.