In this respect, Portbase adheres to the rules as they are already being applied by the ferry operators:
- In the case of accompanied transport: the registration number of the towing unit (without hyphens, enter NL-AB-99 as NLAB99).
- For trailers (unaccompanied): the trailer number as specified on the trailer.
- For other vehicles: the chassis number (VIN number).
If you are uncertain as to how you should enter the equipment number in a specific case, please contact the ferry operator.