No, a computer is not strictly necessary to send your AIS data to MarineTraffic. A PC is only needed if you want to use specialized software or equipment.

In fact, an AIS receiver that operates independently of a computer and special software can be even more advantageous. It eliminates the need to keep your PC running and allows you to position the receiver closer to the antenna (while still indoors).

You have several alternatives to replace the computer: use an AIS receiver with a built-in Ethernet port, connect your AIS receiver with a serial-to-IP converter, or utilize a Raspberry Pi.