A newly installed fish finder, for example, would in essence announce, "I have depth readings, boat speed and water temperature data to share." The chart plotter and radar would respond, "We can use that information." The GPS may then speak up and say to the fish finder, "I have position, heading and off-course data available." These options and more are offered to you whenever a new device is connected to the network. And you can then decide what information you want displayed. This means you now have more relevant information available in more locations. Also with NMEA 2000, every navigation station display can operate as a master control station.