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The St. Lawrence Seaway Unveils New Figures That Demonstrate Its Resilience, Predictability and Sustainability
- Navigating The Seaway
The Great Lakes/St. Lawrence Seaway was built as a...
- Contact Us
The St. Lawrence Seaway Management Corporation (Canada) Head...
- About Us
The Great Lakes/St. Lawrence Seaway was built as a...
- Commercial Shipping
Comprised of the St. Lawrence River, St. Lawrence Seaway and...
- News & Information
GLS Celebrates 70 th Anniversary with Grand Opening New...
- Pleasure Craft
Tolls. Tolls at Canadian Locks. Tolls apply only to pleasure...
- Seaway Business Applications
Seaway Business Applications. In order to use the...
- Notices
Seaway Notices address issues specific to a given navigation...
- Navigating The Seaway
- Overview
- The economy
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St. Lawrence Seaway, continuous navigable deep waterway project from the Atlantic Ocean to the Great Lakes, undertaken jointly by Canada and the United States and completed in 1959. The St. Lawrence Seaway opened North America’s industrial and agricultural heartlands to deep-draft ocean vessels. It forged the final link in a waterway some 3,766 km ...
The seaway has had a major economic impact on the United States and Canada. A principal reason for its construction was the discovery, in Quebec and Labrador, of vast deposits of iron ore needed by steel mills in the United States. Canada, an importer of American iron ore before the seaway opened, exported ore, the second largest commodity, to the United States thereafter. The largest commodity moved is grain, from farms on Canada’s prairies and in the American Midwest, shipped through the seaway at considerable savings. Major users of the seaway are vessels known as lakers, which are designed to the maximum limits of the seaway locks in order to facilitate two-way trade. A laker can pick up grain in the western Great Lakes, destined for world markets, and return with Canadian iron ore, loaded in the lower St. Lawrence. The third largest seaway commodity is coal, moved chiefly from U.S. mines via the Welland Canal to Canadian steel mills and power plants. Another commodity that is significant—because of its value rather than the amount moved—is imported iron and steel.
Bulk commodities make up about 90 percent of annual cargo tonnage, but vessels of many nations also use the seaway to deliver or pick up general cargoes.
The St. Lawrence Seaway is a waterway that connects the Atlantic Ocean to the Great Lakes, enabling deep-draft vessels to access North America's industrial and agricultural heartlands. Learn about its history, economic impact, and physical features from Britannica's experts.
Definition of seaway noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Learn about the St. Lawrence Seaway, a binational waterway that connects the Great Lakes to the Atlantic Ocean and the world. Discover its engineering feats, its role in trade and transportation, and its impact on the North American economy.
Seaway Map The link to MarineTraffic.com is provided for your convenience. This website is managed by a third party that is not subject to the Official Languages Act. Some content may not be available in French.
The St. Lawrence Seaway is a system of locks, canals, and channels that connects the Atlantic Ocean to the Great Lakes of North America. Learn about its history, specifications, geography, and economic impact.
Seaway Bolt & Specials Corp is a pipe plug supplier and special bolt manufacturer. We specialize in cold forming bolts & pipe plugs with tapered pipe threads.
