Events are used to identify a significant change of status for a vessel. Technically, events are managed by means of filters (read more), and an event related to a filter occurs every time a vessel comes into and/or falls out of a filter's selection criteria.
Some examples of events (and filters) are:
The occurrence of an event can in result in a (warning) message being sent via a messaging system, e-mail or SMS.
A satisfactory event service will require more complex and "intelligent" filters than the the ones we are presently supporting. There is a constant development going on within this field.