AIS Stream works by receiving the aggregated feed of a network of global AIS stations. These AIS stations are typically are located on land and have a signal range of up to 200km. The range of stations can be affected by a variety of factors such as weather and the station's surrounding topography. Due to these physical limitations of AIS as well as number of stations required we do not offer 100% coverage for the entire globe and do not receive AIS messages for vessels multiple hundreds of kilometers off shore.

A map of our AIS stations is available below. Do to the varying range of each station this map does not include each stations coverage.