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waterway
A waterway is any navigable body of water. A shipping route consists of one or several waterways. Waterways can include rivers, lakes, seas, oceans, and canals. In order for a waterway to be navigable, it must meet several criteria:
* The waterway must be deep enough to allow the draft depth of the vessels using it;
* The waterway must be wide enough to allow passage for the beam width of the vessels using it;
* The waterway must be free of barriers to navigation such as waterfalls and rapids, or have a way around them (such as canal locks, boat lifts,etc.);
* The current of the waterway must be mild enough to allow vessels to make headway.
Vessels using waterways vary from small animal-drawn barges to immense ocean tankers and ocean liners, such as cruise ships.
==See also==
* Air draft
*Blueway
*Great Lakes Waterway
* Inland waterways of the United States
*International waters
*List of countries by waterways length
*List of waterways
*Navigability
*NoorderSoft Waterways Database
*Saint Lawrence Seaway
*Salish Sea
*Strait of Magellan
*World Rivers Day
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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