SEACOR Holdings Inc. along with its subsidiaries is in the business of owning, operating, investing in and marketing equipment, in the offshore oil and gas, shipping and logistics industries. The Companys operating segment includes Offshore Marine Services, Inland River Services, Shipping Services, Illinois Corn Processing and Other. The Companys offshore marine service operates vessels servicing offshore oil and gas exploration, development and production facilities. The Companys inland river service owns, operates, invests in and markets river transportation equipment. The Companys shipping service invests in, operates and leases a diversified fleet of United States-flag and foreign-flag marine transportation related assets. The Companys Illinois Corn Processing LLC operates an alcohol manufacturing, storage and distribution facility. The Companys other activities include: Noncontrolling investment, Agricultural commodity trading and logistics, Lending and leasing activities.