Network your Humminbird systems fordigital data wherever you need it onboardShare GPS position, waypoints, routes and follow your current track between two Humminbird fishing systems in real time. Mark a waypoint at the console and it's instantly available on the second unit. No matter where you are onboard you'll have critical fishing and navigation information. Plus, daisy chain InterLink with other Humminbird system modules and you'll have network that lets you share digital data around the boat. Energy Efficiency