The marine transportations are carried out on a cabotage and import-export basis. Thus the GREEN Cell system serves both deepsea merchant marine traffic and coastal cabotage. Cabotage rights remain rare in passenger aviation. The European Union allows limited cabotage for road transport. Other routes connected local Chinese cabotage vessels on the Chinese coasts and upper Yangtze. Originally a shipping term, cabotage now covers aviation, railways and road transport. European sailing had been primarily close to land cabotage, guided by portolan charts. Originally a shipping term, cabotage now also covers aviation, railways, and road transport. Cabotage is not granted under most open skies agreements. European cabotage brought wood, coal, Northern Europe wheat, and Mediterranean wine and oil. Such services are currently considered to constitute cabotage and are not permitted. The term "cabotage" is borrowed from French. For the history of cabotage in UK law, see Navigation Acts. In 2005, the United Kingdom and New Zealand concluded an agreement granting unlimited cabotage rights. The ports, although poorly equipped, enabled some degree of cabotage.