Anyone departing the UK by land, sea or air will have their trip recorded and stored on a database for a decade.
Passengers leaving every international sea port, station or airport will have to supply detailed personal information as well as their travel plans. So-called "booze crusiers" who cross the Channel for a couple of hours to stock up on wine, beer and cigarettes will be subject to the rules.
In addition, weekend sailors and sea fishermen will be caught by the system if they plan to travel to another country - or face the possibility of criminal prosecution.