The Chamber of Marine Commerce said grain exports out of the Great Lakes are up for the year,which has "accelerated a rebound in shipping on the St Lawrence Seaway."

Total Seaway year-to-date shipments through the end of September reached 21.2 million tonnes, the Chamber said, which is 5% lower than last year.

But US grain has totaled 1.4 million tonnes, up more than 5% over the 2015 season’s already robust performance.