The Viper 640 is an American trailerable sailboat, that was designed by for racing and first built in 1996. The Viper 640 is an accepted World Sailing class boat and the official one-design boat of the Gulf Yachting Association for its .
The Viper 640 is an American trailerable sailboat, that was designed by for racing and first built in 1996. The Viper 640 is an accepted World Sailing class boat and the official one-design boat of the Gulf Yachting Association for its . (en)
The Viper 640 is an American trailerable sailboat, that was designed by for racing and first built in 1996. The Viper 640 is an accepted World Sailing class boat and the official one-design boat of the Gulf Yachting Association for its . (en)