1943 Launch as PILOT KNOB; owned U.S. Maritime Commission
1943 Owned Bethlehem Steel Co; renamed STEELTON
1966 Owned Interlake Steamship Co (Pickands, Mather & Co); converted to self-unloader at American Shipbuilding Co, Toledo, OH; renamed FRANK PURNELL
1969 Owned Columbia Transportation Co (Oglebay, Norton & Co)
1974 Renamed ROBERT C. NORTON
1995 Scrapped