1. AIS targets were nanmed with their MMSI ID, better named by ship/boat's own name for easy to be identified.
2. AIS targets icon is a big boat photo, too complicated, should simple as same one on the oruxmapsea version, because too many AIS targets would be closely shown on small range sea area.
3. AIS data include own accurate GPS data and other nearby ships' data including speed/course/location/ship name/mmsi id etc. If Oruxmaps can analyze own GPS data to fix own position, the extra GPS device will not be needed. Also effectively aviod to drift fo speed/position from external GPS position.
Wait for your furthor information. Thanks and best regard!