Freighters in the Great Lakes often encounter surface ice in the winter but sometimes run into ice that is too hard or thick to break through. A U.S. Coast Guard icebreaking ship has been working ...

Above: Satellite view of the Great Lakes on a recent clear day (December 22, 2019), showing less than 2% overall ice cover, about normal for this point in the winter, mainly in Green Bay and ...

Great Lakes freighters typically are able to navigate surface ice in the winter, but occasionally encounter ice that’s too hard or thick to break through, he said. The Manitoulin wasn’t ...