Story posted: Tuesday, 16. March 2010 by Frederic Sune

The Peterborough lift lock is a boat lift located on the Otonabee River in the city of Peterborough, Ontario, Canada and is Lock 21 on the Trent-Severn Waterway. The dual lifts are the highest hydraulic boat lifts in the world, rising 19.8 m (65 ft). No external power is needed, the lift lock functions by gravity alone using a counterweight system.

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