China's first domestically-built carrier is launched, 26 April 2017 (Credit Image: Xinhua/SIPA USA/PA Images)

America’s domination of the Pacific Ocean has been a given since the end of the Second World War. Under the protection of the United States’ nuclear umbrella and its Seventh Fleet, countries such as Japan, South Korea, Taiwan, and the Philippines could develop peacefully and without fear of invasion.
China, however, is steadily aiming to undermine the status quo. Its continuing development of what naval experts call a “blue water navy” threatens to disrupt American dominance of the Pacific, and with that the democratic status of nations that have heretofore depended on American naval power.
Maritime trading nations throughout history have depended upon control of the seas for their wealth and power. Ancient Athens, for example, gained its empire and held off Sparta for over 20 years in the Peloponnesian War because of its naval dominance. It finally lost its power, and the war, when Sparta (with Persian money) created its own navy and defeated the Athenians at the battle of Aegospotami. Britain’s empire was also founded upon its naval power, as any school child who has ever learned about the Armada or gazed upon Nelson’s Column in Trafalgar Square knows.
China is no different. Its wealth depends upon trade, and that trade sails upon ships. It also depends upon the importation of oil and raw materials that also sail on ships. The ability to control those shipping lanes in case of conflict, therefore, is essential to any serious Chinese foreign policy.
That, in turn, requires a “blue water navy”. Naval experts classify naval forces according to the types of waters a country’s force can exert power over. A “brown water navy” can operate within a country’s coastal zones while a “green water navy” can exert power over regional seas close to the coast. A “blue water navy” is one that can successfully project power far from a country’s coast, often thousands of miles from its closest port. Only such fleets can contest the control of open seas and far-away shipping lanes.
China has been openly pursuing this capability for decades. It has steadily built up its navy to the point that its submarines and surface fleet can contest control of the waters between it and Taiwan, making American support of the tiny island in the event of conflict with China more hazardous. But only aircraft carriers can control large ocean spaces. That makes China’s pursuit of such boats extremely important.
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