Downbound / Upbound

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Downbound - A direction a vessel is moving while in the Great Lakes region, headed towards the Atlantic Ocean. The St. Lawrence Seaway Development Corporation uses term for eastward movements of cargo.[1] The U.S. Coast Guard uses the term for vessels following the current.[2] Upbound describes a vessel moving in the opposite direction.[1][2] An "upbound" vessel is heading away from the Atlantic Ocean.


  1. ^ a b "Great Lakes/St. Lawrence Seaway System: An overview of North America's most dynamic waterway" (PDF). Saint Lawrence Seaway Development Corporation. 2001. p. 3. Retrieved 2011-02-21.
  2. ^ a b "Navigational Rules: International - Inland" (PDF). U.S. Coast Guard. 1977. p. 21. Retrieved 2011-02-21.