This issue contains an article on Trends in Australian International Sea Trade. It examines Australia's maritime trade 1994–1995 to 2004–2005, including commodity exports and imports, trade regions and port activity.

The feature article in this issue examines regional aviation in Australia–a topic first explored in Avline in October 2003.

This issue contains two articles, one on the role of the new Maritime Security Identification Card system and the other on Australian International Shipping.

Previous issues of Avline have examined Australian domestic and regional aviation.

In addition to the usual content on wharf side indicators of productivity, Waterline 41 contains a feature article on a a set of new indicators of productivity improvements focusing on the interface between port terminals and the trucks and trains

It highlights the variation in aircraft and passenger traffic during this period and discusses how the operational profile has changed through the introduction of discount flights and more direct services to regional centres.

This edition of Waterline includes an article on the Maritime Crew visa which started on 1 July 2007.

The feature article examines the operational changes in terms of passenger traffic and aircraft movements at Australia's five major airports (Sydney, Melbourne, Brisbane, Adelaide and Perth) over the decade 1997–2006.

The feature article examines the aviation industry's contribution to greenhouse gas emissions and the steps being taken both domestically and internationally to quantify the problem and to reduce aviation emissions.

Waterline reports on trends in container handling productivity on the waterfront in Australia as well as the cost of importing and exporting containers.