Seaway opens for 66th season March 22, 2024 News, Premium The Algoma Sault transits the lock in St. Catharines, Ont. on Friday, March 22, 2024 to start the 66th seaway navigation season. (St. Lawrence Seaway Management Corporation/Facebook via Newswatch Group) This is content for Cornwall Newswatch Premium subscribers. Subscribe now for as little as $5.99 a month! You'll have access to the latest breaking news and original reporting in Cornwall and the Seaway Valley. Click here to subscribe. Username or E-mail Password Remember Me Forgot Password shippingSt. Lawrence RiverSt. Lawrence Seaway Development CorporationSt. Lawrence Seaway Management CorporationTerence Bowles