EXHIBIT (21)-1- COMPANIES OWNED BY UNIMAR COMPANY The following is a list of companies owned, directly and indirectly, by Unimar Company, together with their respective jurisdictions of incorporation. In each case, all of the outstanding voting securities of each company listed are owned by the company indicated by indentation as its parent, except as otherwise noted. State of Incorporation Unimar Company (a General Partnership under The Texas Uniform Partnership Act) ENSTAR Corporation. Delaware VICO 7.5, Inc. Delaware Virginia Indonesia Company Delaware Virginia Services, Inc. Delaware Virginia Services, Ltd. Delaware ENSTAR Indonesia, Inc. Delaware Virginia International Company Delaware ENSTAR Petroleum Ltd. Canada