St. Marys Cement II pushed by tug Sea Eagle II are downbound on the lower Saint Clair River which forms the boundary between Michigan and Ontario on September 3, 2006. The St. Marys Cement II was built in 1978 as the Velasco (1978-1981) and later renamed the Canmar Shuttle (1981-1990. The Sea Eagle II was built in 1979 as the Sea Eagle (1979-1981) and later renamed Canmar Sea Eagle (1981-1991). Both are owned by St. Marys Cement Inc (Canada), headquarted in Toronto, Ontario.