4-Inch Colour Display Perfect as a standalone solution with bright, 4-inch colour display for easy vessel identification or a fully integrated system. Class-B Approved Approved Class-B automatic identification system. See and Be Seen The AI50 both sends and receives data so that you can see other vessels and they can see you. NMEA 2000® / NMEA 0183® Compatible with both protocols. Fully Waterproof The AI50 is waterproof to IP-67 Standard. AIS Data Logging Log AIS targets to SD card slot.