The Garmin Reactor™ 40 Steer-by-Wire Corepack for Viking® VIPER™ with GHC™ 50 Autopilot Instrument (010-02794-05) delivers premium automated course control engineered specifically for vessels utilizing the Viking Independent Programmable Electro-hydraulic Rudder (VIPER™) steering system. By interfacing directly with the VIPER™ network via a dedicated software gateway, the corepack provides precise, responsive helm control over the vessel’s CAN bus without requiring third-party hydraulic pumps. The system centers on a solid-state 9-axis Attitude and Heading Reference System (AHRS) that continuously adapts to water conditions, minimizing heading error and compensating for pitch, roll, and yaw even in heavy seas. System setup and monitoring are managed through the included GHC™ 50 helm instrument—a crisp, 5-inch glass touchscreen display with custom marine color profiles. Featuring full NMEA 2000® connectivity, the corepack seamlessly integrates with compatible Garmin chartplotters to unlock advanced navigation tools, including step turns, route following, and Auto Guidance features, providing sportfishers and yachtsmen with reliable, hands-free steering performance.