Junior N. Van Noy was a Great Lakes steamer converted as one of ten U.S. U.S. Army Port Repair ships to be operated by the U.S. Army Corps of Engineers in rehabilitating war damaged ports. The other nine ships were Maritime Commission type N3–M–A1 cargo ship hulls built under U.S. Navy supervision and transferred upon completion or after very brief Navy service to the U.S. Army for conversion to port repair ships.