Maritime geography is a collection of terms used by naval military units to loosely define three maritime regions: brown water , green water , and blue water .
11-515: Greenwater or green water may refer to: Green water , a maritime region Greenwater, California Greenwater, Washington Green water footprint , the component of water footprint originating from rain Green water algae, type of freshwater aquarium algae infestation [REDACTED] Topics referred to by the same term This disambiguation page lists articles about distinct geographical locations with
22-450: A specialty law enforcement portion of a larger police organization, who patrol in water craft. Their patrol areas may include coastal tidal waters, rivers , estuaries , harbors , lakes , canals or a combination of these. Water police are usually responsible for ensuring the safety of water users, enforcing laws relating to water traffic, preventing crime on vessels, banks and shores, providing search and rescue services (either as
33-412: A few hundred miles from shore. It is the most important maritime arena, including most coastal traffic and territorial waters, in which are found the great majority of a nation's maritime police , customs, environmental, and economic concerns. A green-water navy is capable of defense of its nation in depth and is a significant offensive force within its territory. The blue water environment extends from
44-548: The US Naval War College includes bays in his definition of brown water, and in the past US military commentators have extended brown water out to 100 nautical miles (190 km) from shore. During the Cold War , green water denoted those areas of ocean in which naval forces might encounter land-based aircraft and brown water, land-based artillery. The development of long-range bombers with antiship missiles turned most of
55-538: The United States the various Federal, State or Local authorities may work together to promote or achieve similar enforcement or rescue outcomes. In the United States, some states have combined the duties of water police with those of conservation officers or state police . Equipment used ranges from personal water craft and inflatable boats to large seagoing craft, but most police vessels are small to medium, fast motorboats . In some areas these vessels incorporate
66-629: The development of ships designed to operate in such waters - the Zumwalt class destroyer and the littoral combat ships . Rubel has proposed redefining green water as those areas of ocean which are too dangerous for high-value units, requiring offensive power to be dispersed into smaller vessels such as submarines that can use stealth and other characteristics to survive. Under his scheme brown water would be zones in which ocean-going units could not operate at all, including rivers, minefields, straits and other choke points. The brown water environment starts from
77-470: The main provider or as an initial response unit before more specialized units arrive), and allowing land-based police to reach locations not easily accessible. They may also be responsible for coastal security , environmental law enforcement, immigration and smuggling interdiction, and diving operations (although many police organizations have separate units to handle this). Their operations may coordinate with other agencies with similar assets such as in
88-459: The oceans to "green" and the term all but disappeared. After the Cold War, US amphibious taskforces were sometimes referred to as the green-water navy, in contrast to the blue-water carrier battlegroups. This distinction disappeared as increasing threats in coastal waters forced the amphibious ships further offshore, delivering assaults by helicopter and tiltrotor from over the horizon. This prompted
99-668: The outer edge of the green-water zone to the deep ocean of the world. A blue-water navy can project its nation's power throughout the world. The blue water policy was a long-standing political philosophy in Britain in the 18th century, which sought to advance British power through use of the Royal Navy , although the term "blue water" did not appear until 1834. Water police Water police , also called bay constables , coastal police , harbor patrols , marine/maritime police/patrol , nautical patrols , port police , or river police are
110-767: The same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Greenwater&oldid=1242794221 " Category : Place name disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Green water The elements of maritime geography are loosely defined and their meanings have changed throughout history. The USA's 2010 Naval Operations Concept defines blue water as "the open ocean", green water as "coastal waters, ports and harbors", and brown water as "navigable rivers and their estuaries". Robert Rubel of
121-467: The shoreline through to the end of the continental shelf . A brown-water navy focuses on littoral operations and primarily takes a defensive role. "Brown water" or "brown ocean" is also used by meteorologists to refer to intertidal wetlands where the border between the ocean and dry land is not clear-cut. The green water environment extends from the outer edge of the brown-water layer past any continental shelves, archipelagos and islands ; perhaps
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