Helen H. tug serves multiple purposes for Duluth-Superior Harbor

In this region tugboats do more than assist ships through the harbor. At the start and end of each shipping season you find the Helen H. in the Duluth-Superior Harbor breaking ice. Mike Ojard, owner of Hertiage Marine, describes the technique to breaking ice while freeing up the Arthur M. Anderson from CN dock 6 in Duluth on Friday, March 29, 2019. (Samantha Erkkila / serkkila@duluthnews.com)