1930 Owned The Spanish Mills Co. Ltd., Cutler, ONT.
1940 Burke Towing & Salvage Company Ltd., Midland.
1941 Renamed TUPPER PORTER owned J.P. Porter & Sons Ltd., Montreal.
1944 Toronto Dry Dock Company Ltd.; rebuilt; active until 1948.
1948 Probably abandoned.
1949 Dismantled Toronto.