Manual - viperclass Home Technical Viper Manual. Manual. AHPC has a detailed owners manual for the VIPER catamaran. This has been compiled to help you set up and operate your VIPER catamaran safely and easily. It contains details of the boat and its fitted equipment. Please read it carefully and familiarize yourself with it and the boat before rigging and sailing.[PDF] Viper Owners Manual - sailfast Viper Owner's Manual 4 1 Introduction Congratulations on purchasing your new GOODALL VIPER. The VIPER is the next generation of 16 foot racing catamarans and you will soon see why. The speed and performance of the VIPER exceeds that of the bigger catamarans. The VIPER set new standards around the world in what a “little” boat can achieve.