AIS is great, but there are also other means of reporting or collecting vessels’ positions.
You could use the OnCourse/mAIS application on your mobile device (iOS or Android) on board to be reporting the positions of your vessel directly to MarineTraffic.
Any shipping company would benefit by using a proprietary system to be following its fleet. Even if the reporting is not in real-time but only sporadic, a vessel's last known position remains a valuable information. Publishing this information through MarineTraffic would also be possible!
We can collect and process ships’ positions by any automated method and in any format, including (but not limited to):
accessing a web service on our server where the position information is entered
allowing our service to access your data
sending us a file containing a batch of previously recorded data, in text, csv, xls, xml, json or other formats
sending us the NMEA data feed of your boat, which may also include other valuable data, such as wind speed and direction, sea depth, water temperature, etc.