Computer software and hardware in the field of marine electronic devices for operating with marine fishfinders, sonar, ultrasonic detectors, chartplotters, and GPS data; marine electronic multifunction displays; electronic display apparatus for displaying information received from fishfinders, sonar, ultrasonic detectors, chartplotters, and GPS data; computer software for processing and displaying digital images and data from fishfinders, sonar, ultrasonic detectors, chartplotters, and GPS data.;