Are you planning on making use of the follow-up services (such as Cargo Declaration Import)? Then it is mandatory for certain ports such as Hansweert, Vlissingen and Terneuzen, Den Helder, Ankerplaats Zeeland and Breskens to manually enter the registered CRN in the screen. For the other ports, you can search for the ship using the IMO number or vessel name. After you have done this, it is also possible to copy a previously entered trip.