St Lawrence Locks
The lock system built to level the St Lawrence waterway is an engineering marvel. Our ship clears the channel by 3 inches on each side-it was designed to fit these locks. The photos I got are alluring as the ship came through on a very cold, crisp morning with lots of magical myst on the waterway. This is the Iroquois Locks and a major engineering feat: <http://stlawrencepiks.com/seawayhistory/seawayconstruction/iroquois/index.html/>