Ports are complex combinations of interlocking elements including natural features,
infrastructure and superstructure linked through transport connections to other ports and
to distribution centres in the hinterland (Juhel 2001). The management of natural
resources, infrastructure and superstructure may all be in different hands (de Langen
2004, de Langen and Visser 2005), as well as serving independent logistics businesses
who use port facilities (Compés López and Poole 1998).