Soo Locks, Sault Ste. Marie, Michigan
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There are four navigational locks in the American side.
The first lock was constructed in 1855. The Poe Lock
is the largest lock in the St. Lawrence Seaway and is the
only one which can handle the super freighters which are
more than 1,000 feet (308 meters) long and 105 feet
(32 meters) wide. Locks raise and lower lakers and ocean-going
vessels 21 feet (6.5 meters) between Lake Superior (the higher
end) and Lake Huron (the lower end).
Lake Superior Travel Guide |
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This is one of the locks and a big ship. The left (right) side is Lake Superior (Huron). |
Both ends of this empty lock are closed, and water level is low. The background is the International Bridge connecting the two Sault Ste. Marie cities in US and Canada. | |
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| Water is being pumped in | Do you see the difference? | The gate opens | This boat sails into Lake Superior |