Great Lakes Fleet
Great Lakes Fleet, Inc. is a shipping firm headquartered in Duluth, Minnesota that operates a fleet of nine self-unloading bulk carriers on the Great Lakes transporting dry bulk cargo such as iron ore, coal and limestone. History 
Great Lakes Fleet was formed on July 1, 1967, when U.S. Steel consolidated its Great Lakes shipping operations by merging the Pittsburgh Steamship Division and its sister fleet, the Bradley Transportation Company forming the USS Great Lakes Fleet. In 1981, Great Lakes Fleet was spun off into a U.S. Steel-owned subsidiary, Transtar, Inc. Vessels
 SS Arthur M. Anderson - Last Ship to have Contact with the SS Edmund Fitzgerald
 SS Cason J. Callaway
 SS Phillip R. Clarke - First vessel of the 'AAA' Class ore carriers; the Anderson and the Callaway are also of this class. The three are sometimes referred to as the "Triplets" because the three ships are nearly identical in dimensions and appearance
 MV John G. Munson
 MV Roger Blough First "super carrier" upon the lakes, with its keel laid in 1968, predating the larger '1000 Footer' vessels. MV Edwin H. Gott Formerly the most powerful vessel on the Great Lakes, with Enterprise DMRV-16-4 diesel engines, twin propellers, rated at 19,500 bhp (14,500 kW) as built. Repowered in 2011
 MV Edgar B. Speer
 MV Presque Isle
 MV Great Republic

Former Vessels
 MV Calcite II
 MV Myron C. Taylor
 MV George A. Sloan  Sold to Lower Lakes Towing Limited, which renamed her Mississagi for the start of the 2001 season. Scrapped in 2021
 SS Irvin L. Clymer

References 

Great Lakes Shipping Companies
Shipping companies of the United States
Canadian National Railway subsidiaries
U.S. Steel
Companies based in Minnesota
1967 establishments in Minnesota
American companies established in 1967
Transportation in Duluth, Minnesota