Welland Canal Lock 4 is in St.Catherines in the province of Ontario, Canada.

St. Catherine’s has about 392,000 inhabitants and is the largest city on the Niagara Peninsula. Due to the location between Lake Erie and Lake Ontario on the Niagara Escarpment, St. Catherines has a unique microclimate and is also known as Garden City.
The Welland Canal is the eastern boundary of the city. Here one can visit lock 4, a dual-chamber lock with a lift of 49 ft.
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More InformationIn the time-lapse video you can see how the cement carrier Stephen B. Roman leaves Lock 4 and passes through the vertical-lift bridge – Welland Canal Bridge 5.

The Stephen B. Roman is about 465 ft long and has a beam of 55 ft. She was built in 1965 by Davie Shipbuilding & Repair Ltd. of Lauzon in Quebec and can reach an average speed of 13 knots.
See also : Welland Canal Lock 7
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