The Port of Auckland faces frequent questions about the wisdom of having a port located in the city centre. A study is being carried out this year in hopes of reaching a definitive answer on the question of port location. (Photo: Ports of Auckland Limited)

Air cargo volumes are expected to remain flat through most of 2016, but airports like Singapore's Changi are "cautiously optimistic" that air cargo volumes will recover by the end of the year. (Photo: Changi Airport Group)

Cargolux, Cathay Pacific and Emirates have steadily built up scheduled freighter operations through Columbus, prompting the airport to build a new, 9,300 sq metre terminal, which is due for completion halfway through the coming year. (Photo: Columbus Regional Airport Authority)

Cranes are offloaded at the Port of Long Beach for the Middle Harbor project, which is scheduled to go live in the first quarter of 2016. (Photo: Port of Long Beach)