Terrestrial

AIS data has become a valuable source of information beyond its original goal, collision avoidance.

Possible uses are:
– ship traffic controling and monitoribng
– fleet tracking for ship owners and logistics companies
– fleet analysis and market assessment for fonds and financial institutions
– scietific analytics for reserahcers

Public and private parties collect the freely available data and distribute it further.

 
terrestrial

Data providers set up networks of passive landbased anetanna’s to collect the data. The stations send out their data in near real time through data networks.

Due to the limited range of VHF transmitters (line of sight, max 200km) extensive networks are needed to provide a significant coverage. Most antenna networks focus on crucial areas like important harbours and bussy shipping lines. Other, less critical regions as well as the open sea stay uncovered.

 

Terrestrial data providers