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in reply to Mark Wollschlager

The Massena Locks


The Eisenhower Lock and the Snell Lock are the two American locks located along the Wiley-Dondero Canal in Massena.

Any ship traveling completely between the Atlantic Ocean/Montreal and Lake Ontario has to transit these two locks to navigate past the Moses-Saunders Power Dam and the Long Sault Rapids.

in reply to Mark Wollschlager

Every ship entering the Great Lakes goes through the Welland Canal...


Apparently not. The map clearly shows that the canal is not at the entrance to the Great Lakes, but between Lake Ontario and Lake Erie.

in reply to Mark Wollschlager

The eastern portion of the St. Laurence Seaway is entirely in Canada…
in reply to Mark Wollschlager

  1. Through the lakes, not just to one of them.
  2. The locks at Massena NY must also be traversed for a complete trip in either direction.
in reply to Mark Wollschlager

I wonder: at what point does the Seaway transition from being an international passage (the Gulf of St. Lawrence) to being basically a big river in Canada (the St. Lawrence River). At that point, every ship is within Canada proper.