The Great Lakes Group consists of The Great Lakes Towing Company and Great Lakes Shipyard. 

The Great Lakes Towing Company operates the largest fleet of US-flagged tugboats on the Great Lakes. The Towing Company has an active tug stationed at the Port of Monroe, with the ability to bring in additional tugboats depending on the requirements of a job. Their modern fleet provides ship assist, cargo transportation and logistics, ice breaking, and emergency assistance of every kind of vessel, barge, and marine structure.

Great Lakes Shipyard is a full-service shipyard for new vessel and barge construction, maintenance and repairs, and custom fabrication in a state-of-the-art facility that includes a 300-ton floating drydock. The Shipyard specializes in every kind of marine construction, fabrication, conversion, refit, and repair for all types of commercial and government vessels, tugs, supply boats, ferries, barges, “truckable” barges, excursion vessels, dinner boats, research vessels, and large yachts, as well as both on-site and off-site topside work.