Online Live Ship AIS Monitor is a ship monitoring system that is available for free on Android. Developed by GemiTrafik.com, this application is aimed at amateur seafarers and sea enthusiasts. The system is based on AIS (Automatic Identification System) and covers all seas.

The AIS signals used in this system are collected by amateur AIS receiver stations from all over the world. These signals are then sent to the main servers, where they are processed and presented on a map for users to view. The coverage of the AIS system varies widely depending on the environmental conditions and location in which the receiving station is located, the antenna height, and the quality of the electronic equipment.

The AIS receiver stations that collect information from the sea and the vessels are all internally connected systems that transmit all AIS data they collect in their territories to the main servers from the internet. This information is processed here and shaped to be seen on Google maps, and it is published via web sites again. However, it is not appropriate to use this system for navigational purposes.

Overall, Online Live Ship AIS Monitor is a useful tool for those interested in tracking ships for non-navigational purposes. It provides real-time information about ships and their locations, and the interface is easy to use.