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Viper 640 International Regatta at Bermuda day 3
© Beau Outteridge
International Class Status for Viper 640, 2017 Events, Rudder Modifications
The high performance Viper 640 keelboat has successfully gained International Status from ISAF. This is a major step forward for the Class, following on from the Viper's selection earlier this year by a large number of Gulf State yacht clubs.