A cargo ship bound for Chicago ran aground on the St. Lawrence Seaway on Sunday morning near Prescott, Ontario, across from Ogdensburg.
John L. Cottreau, a spokesman with the Transportation Safety Board of Canada, said the ship, M.V. Sedna Desgagne, was stranded at around 8 a.m. Mr. Cottreau said there were no injuries. He did not know how many were on board or where the vessel originated.
While the mishap slowed traffic, other boats have been able to continue along the seaway.
The vessel was carrying pig iron, or unprocessed steel.
The transportation board has sent a team of three investigators to find out what caused the mishap, described as a hard-to-ground incident.
The Canadian board is an independent agency that investigates marine, pipeline, railway and aviation transportation occurrences. It is not the boards function to assign fault or determine civil or criminal liability.