SS Canadian Constructor was a 7,178 GRT refrigerated ship built in 1922 by Halifax Shipyards Ltd in Nova Scotia. The ship had 12 corrugated furnaces with a combined grate area of heating her four 180 lbf/in2 single-ended boilers, which had a combined heating surface of . The boilers fed a 705 NHP triple expansion steam engine that was built by Tidewater Shipbuilders Ltd of Three Rivers, Quebec. Her hull had a 13 ton fore peak tank and a 128 ton aft peak tank. The ship's first manager was Canadian National Steamships, which set up a one-ship company, Canadian Constructor Ltd, to own her.