Furuno's NX-300 paperless Navtex reciever is the most economical way of monitoring navigational warnings , search and rescue information and other data for ships sailing within 200-400 nautical miles of shore . Every incoming  message is identified and new messages are read from the high- contrast 4.5" LCD display , no paper is required . However , you can print out the message via a PC. The NX-300 consists of the compact , waterproof display and an H-Field Loop antenna .