An AIS (Automatic Identification System) device is used to track shipping traffic and help prevent collisions on the water. There are two types of AIS devices: transceivers and receivers.
AIS transceivers transmit and receive information. They can broadcast the vessel's own information, including its position, speed, and course, to other AIS-equipped vessels. Transceivers can also receive the same type of information from other vessels within range and display it on the vessel's navigation equipment.
AIS receivers, on the other hand, can only receive AIS information. They cannot transmit. The information that they receive includes the identity, position, speed, and course of nearby vessels. AIS receivers are typically used in non-commercial vessels or by those who are not required to transmit AIS signals.
The main difference between AIS transceivers and receivers is that transceivers can both send and receive information, while receivers can only receive. This means that AIS transceivers are much more useful for avoiding collisions and managing vessel traffic.
