Commercial Shipping

Comprised of the St. Lawrence River, St. Lawrence Seaway and the Great Lakes, Hwy H2O is a 3,700-kilometer (2,300 mile) marine highway that runs between Canada and the United States. Hwy H2O flows directly into our commercial, industrial and agricultural heartland, home to some 100 million people, roughly one quarter of the Canada/U.S. combined population.

Seaway eBusiness Log-in or Register

Transiting the Seaway

Regulations and Laws

Seaway Security

Seaway Handbook

Schedule of Tolls

Schedule of Wharfage & Storage Charges

Incentive Programs


Seaway Opening and Closing Information


Vessel Transit Information