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Overview: Ships are a vital element in the modern world. They still carry some 95 per cent of trade. In 1994 there were more than 80 000 ships each with a gross tonnage of 100 or more, representing a gross tonnage of over450 million in totals. Although aircraft have displaced the transatlantic liners, ships still carry large numbers of people on pleasure cruises and on the multiplicity of ferries operating in all areas of the globe. Ships, and other marine structures, are needed to exploit the riches of the deep. Although one of the oldest forms of transport, ships, their equipment and their function, are subject to constant evolution. Changes are driven by changing patterns of world trade, by social pressures, by technological improvements in materials, construction techniques and control systems, and by pressure of economics. As an example, technology now provides the ability to build much larger, faster, ships and these are adopted to gain the economic advantages those features can confer.
Genre: Non-Fiction > Educational
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