Canadian National 4-8-4 No. 6155 takes on water, in a photo of unknown origin and location. The dual-service U-2-c class developed 56,785 pounds of tractive effort and weighed 383,000 pounds. They had 25½x30-inch cylinders, 73-inch drivers, and 250 p.s.i. of boiler pressure. Their grate area measured 84 square feet; with 4220 square feet of evaporative heating surface, they had a superheating surface of 1760 square feet.