SmartPilot Corepacks from RAYMARINE INC.
The central nervous system of every SmartPilot system, Raymarine corepacks are comprised of a course computer,patented fluxgate electronic compass and rudder reference unit. In order to select the right SmartPilot corepack for your vessel you must first determine which autopilot drive unit is right for your steering system. Each corepack contains a SmartPilot course computer in either a standard configuration or a “G” version. T400 Corepacks are now called S3 Corepacks. Fluxgate compass - 3.