Blue-water navy

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A blue-water navy is a maritime force capable of operating globally, essentially across the deep waters of open oceans.^[1] While definitions of what actually constitutes such a force vary, there is a requirement for the ability to exercise sea control at long range.

The term "blue-water navy" is a maritime geographical term in contrast with "brown-water navy" (littoral waters and near to shore) and "green-water navy" (near to shore and open oceans).

The Defense Counterintelligence and Security Agency of the United States has defined the blue-water navy as "a maritime force capable of sustained operation across the deep waters of open oceans. A blue-water navy allows a country to project power far from the home country and usually includes one or more aircraft carriers. Smaller blue-water navies are able to dispatch fewer vessels abroad for shorter periods of time."^[2]