Grand River Navigation Company

Grand River Navigation Company is the U.S. operating subsidiary of Mainstay Maritime, Inc and began operating in 2000, leasing a barge and purchasing a tug. Since that time, the Company has grown to become the marine transportation provider with the largest fleet operating on the Great Lakes today.

Grand River Navigation operates a fleet of ten self-unloading bulk carriers in the U.S., which includes three articulated tug and barge units. These vessels transport a diverse array of dry bulk commodities including limestone, coal, iron ore, salt, grain and other commodities for more than 50 long-standing customers in the construction, electric utility, integrated steel and food industries.

The bulk of Grand River’s vessels operate in the River Class market segment, where we are the undisputed market leader. River Class vessels, which we define as being less than 650 feet in overall length, can operate in ports that are restricted from receiving larger vessels.