Simrad NAC-2 Autopilot Core Pack - NAC-2, Precision-9, RF25N & N2k Starter Kit [000-13335-001]NAC 2 Autopilot Core Pack NAC 2, Precision 9, RF25N & N2k Starter Kit Comprising of the high current NAC 2 autopilot computer, Precision 9 compass and RF 25 rudder feedback unit ideal for smaller vessels, designed to run small hydraulic drives and mechanical drives for vessels up to 10M (33') in length. The NAC 2 Autopilot Computer is the brains behind your autopilot system. NAC 2 contains the control algorithms developed to helm a yacht across a