Duluth, MN (NNCNOW.com) --- After battling some of the worst lake ice in recent history, the first ships have made their way through the Soo locks.
According to the U.S. Army Corps of Engineers the Cason J. Callaway had the honor of being the first commercial boat through the Soo Locks for the 2014 navigation season.
These photos, marking the passage, were posted on Facebook by Keith Baker. Travelling in a convoy with the John G. Munson and several ice breakers, it took them nine days to cross Lake Superior and reach the locks.
It's been a rough start to this year's shipping season. At the beginning of the Callaway's voyage Ice was four to five feet thick and abundant on Lake Superior. Some reports indicated ice ridges were eight feet high.