Mainstay operates a fleet of 23 U.S.-flagged vessels, including 16 self-unloading bulk carriers and 2 tug-barge units, with safety as our top priority. In addition, Mainstay manages 5 specialty carriers, including 1 self-propelled vessel and 4 tug-barge units. Over the course of each season, our fleet travels more than 337,000 miles across the Great Lakes and employs over 825 people.
Mainstay is a market leader in the Class I and River Class vessel segment and is the only carrier able to offer significant scale and vessel diversity on the Great Lakes. The Company’s vessels operate under the U.S. Jones Act—which reserves domestic waterborne commerce to vessels that are U.S. owned, built and crewed.
We take pride in our world class safety record, exemplary maritime and technical expertise, and the unmatched efficiency and flexibility of our operations. Boat watchers travel miles to view the ships in operation, since many of the vessels have a unique history within the Great Lakes maritime industry.
CLASS I
Class One vessels are exclusively 1000' long and have a 105' beam, the largest on the Lakes. These assets carry the largest loads for our customers.
CLASS II
Class Two vessels within our fleet range from 815' to 680' and have a beam of 78'. They have carrying capacity between 24k and 35k tons depending on the vessel. These assets excel at efficient moves over longer distances.
CLASS III
Class Three vessels within our fleet range from 730' to 630' and have a beam of 68' to 70'. They have a carrying capacity between 18k to 30k tons depending on the vessel. These assets can go in tight waterways and are highly navigable.
SPECIALTY
Our fleet of assets allows for safe and efficient movement of liquid and specialty cargos across the entirety of the Great Lakes.
