This is a shot of the crane/cargo ship DC Everest entering the Canadian Soo Locks at Sault Ste. Marie in the summer of 1975. This appears to have been taken from the park located on Canal St. on North St. Mary’s island.
According to boatnerd.com, DC Everest was built in 1953 and primarily carried wood (pulp) products between Marathon, Ontario and Green Bay, Wisconsin. Later it was renamed to Condarrell.