Marine instrument displays and processors to support the same; marine electronic apparatus, namely, electronic instrument and data display screens and processors to support the same; marine electronic multifunction display screens and processors to support the same; marine instrument displays featuring displays for autopilot functionality, nautical charts, navigational radar, sonar information, chartplotters, fishfinder systems, audio volume, radio communication information, marine global positioning system devices, speed, water depth, wind speed, and automatic identification systems (AIS) and processors to support the same.