1937 Owned Standard Oil Co
1962 Owned American Oil Co; renamed AMOCO INDIANA
1986-1987 Converted to self-unloading cement barge at Bayship, Sturgeon Bay, WI; shortened to 420'
1987 Owned Medusa Cement Co; renamed MEDUSA CONQUEST
1999 Renamed SOUTHDOWN CONQUEST
2003 Renamed CEMEX CONQUEST
2005 Renamed ST. MARY'S CONQUEST