Ontario

=== Waterways ===
{{see also|Boat building industry in Ontario}}
The [[Saint Lawrence Seaway]], which extends across most of the southern portion of the province and connects to the Atlantic Ocean, is the primary water transportation route for cargo, particularly [[iron ore]] and grain.<ref>{{Cite web |last=Rodrigue |first=Jean-Paul |date=2018-02-03 |title=B.20 – The St. Lawrence Seaway and Regional Development {{!}} The Geography of Transport Systems |url=https://transportgeography.org/contents/applications/saint-lawrence-seaway-development/ |access-date=2023-10-04 |website=transportgeography.org |archive-date=June 10, 2023 |archive-url=https://web.archive.org/web/20230610001559/https://transportgeography.org/contents/applications/saint-lawrence-seaway-development/ |url-status=live }}</ref> In the past, the Great Lakes and St. Lawrence River were also a major passenger transportation route, but over the past half century passenger travel has been reduced to ferry services and sightseeing cruises.{{citation needed|date=October 2023}} Ontario's three largest ports{{notetag|As of 2011, domestic and international tonnage}} are the [[Hamilton-Oshawa Port Authority|Port of Hamilton]], [[Thunder Bay Port Authority|Port of Thunder Bay]] and the Port of Nanticoke.<ref>{{Cite web |last= |first= |date=2019-02-08 |title=Table 11-4a: Top 20 Canadian Water Ports by Tonnage (Domestic and International) – 2011 |url=https://www144.statcan.gc.ca/nats-stna/tables-tableaux/tbl11-4a/tbl11-4a-CAN-eng.htm |access-date=2023-10-04 |website=[[Statistics Canada]] |archive-date=May 24, 2023 |archive-url=https://web.archive.org/web/20230524041749/https://www144.statcan.gc.ca/nats-stna/tables-tableaux/tbl11-4a/tbl11-4a-CAN-eng.htm |url-status=live }}</ref> Ontario's only saltwater port is located in the town of [[Moosonee]] on [[James Bay]].<ref>{{cite web|url=https://www.ontario.ca/en/about_ontario/004660.html|title=About Ontario: Moosonee|publisher=Queen's Printer for Ontario|access-date=2010-12-22|archive-date=2012-10-18|archive-url=https://web.archive.org/web/20121018002148/http://www.ontario.ca/en/about_ontario/004660.html}}</ref>