International vehicle registration code registration plate. When the distinguishing sign is incorporated in the registration plate, it must also appear on the front registration plate of the vehicle. The requirement to display a separate distinguishing sign is not necessary within the European Economic Area, for vehicles with license plates in the common EU format which satisfy the requirements of the Vienna Convention, and so are also valid in non-EU countries signatory to the convention. Separate signs are also not needed for Canada, Mexico and the United States, where the province, state or district of registration is usually embossed or surface-printed on the vehicle registration
Ship registration been done since business on the seas has been important. Originally meant to control ships carrying cargo in European seaborne countries, it was used to make sure ships were being built in the local country, with crews predominantly of the local country. Since then, ship registration has been used to document ships for ownership. Documentation provides definite evidence of nationality for international purposes and provides financing opportunities with the availability of preferred mortgages on documented vessels. Vessels that operate internationally or cross international borders are required to be registered. Some jurisdictions also require vessels that only operate in territorial waters