Directly to a port.............from one county to another...........beneath the entire nation...........

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Saint Lawrence Seaway

Body of water

The Saint Lawrence Seaway is a system of locks, canals and channels in Canada and the United States that permit ocean-going vessels to travel from the Atlantic Ocean to the Great Lakes of North America, ... Wikipedia

Length: 1.9536 million′ 0″

Maximum height above sea level: 570 ft (170 m)

Maximum boat length: 740 ft 0 in (225.6 m)

Maximum boat beam: 78 ft 0 in (23.8 m)

Date completed: 1959

Did you know: The St Lawrence Seaway (Great Lakes Waterway) is the system of locks, canals and channels linking the Great Lakes and the St Lawrence River with the Atlantic Ocean. thecanadianencyclopedia.ca