Interlake Steamship's PAUL R. TREGURTHA carried the most cargo through the Soo Locks last season. The 1,013.5-foot-long TREGURTHA moved 3,004,957 net tons of cargo through the locks connecting Lake Superior to the rest of the system. All but three cargos were low-sulfur coal loaded at Superior Midwest Energy Terminal.
The top seasonal total has declined like water levels. In 1999, Oglebay Norton's OGLEBAY NORTON reigned with 3,139,769 n.t. In 1998, the TREGURTHA took the Soo crown with 3,219,646 n.t.