River barges transiting a lock.
Pulling a boat through locks GIF
Tandem crane collapse while lifting bridge section on barge - videos
Frank, I reckon that's about 10x speed...it's a LOT of water...first time it's a bit eerie, because it is so quiet, after a few (or a dozen or two) it gets boring, go figure... The ship lift at Three Gorges Dam in China is a REAL eye opener, like floating into a rectangular steel pool and then lowering on huge chains and sprockets to the river below...
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