SafeSeaNet LOCODES Guidelines
The identification of a particular location is frequently required in international trade and transport to track the
movement of goods. The names of such locations are often spelt in different ways, and sometimes the same
location is given different names in different languages, which creates confusion and difficulties for data exchange.
The identification, in a unique and unambiguous way, of any place involved in international trade is essential, so
a coding system was developed for this purpose. The coding system is referred to as the “United Nations LOCODE”
(UN/LOCODE), and it is intended to cover ports and other locations for purposes of international trade data
interchange.
http://www.emsa.europa.eu/ssn-main/documents/item/1629-ssn-locodes-guidelines.html