how do boats get from great lakes to ocean
Great Lakes Waterway Together with the Saint Lawrence Seaway, the Waterway allows both ocean-going vessels and the ore, grain and coal-bearing lake freighters to travel from the system's saltwater outlet to its far interior. The Waterway has larger locks and deeper drafts than the lower Seaway, limiting large freighters to the four lakes upstream of the Welland Canal and Lake Ontario, and similarly restricting passage beyond the canal by larger ocean vessels. The two waterways are often jointly and simply referred to as the "St. Lawrence Seaway", since the Great Lakes, together with the St. Lawrence River, comprise a single navigable body of freshwater linking the Atlantic Ocean to the continental interior.
Seneca Lake (New York) Numerous canal barges sank during operations and rest on the bottom of the lake. A collection of barges at the southwest end of the lake, near the village of Watkins Glen, is being preserved and made accessible for scuba diving by the Finger Lakes Underwater Preserve Association.