SEACOR Holdings Inc. is engaged in owning, operating, investing in and marketing equipment, primarily in the offshore oil and gas, shipping and logistics industries. The Company's segments include Offshore Marine Services, Inland River Services, Shipping Services and Illinois Corn Processing. The Offshore Marine Services segment operates a fleet of support vessels primarily servicing offshore oil and gas exploration, development and production facilities around the world. Inland River Services segment operates river transportation equipment used for moving agricultural and industrial commodities and petroleum and chemical products. Shipping Services segment operates a fleet of United States flag marine transportation related assets. Illinois Corn Processing segment produces alcohol used in the food, beverage, industrial and petrochemical end-markets. It offers emergency and crisis services, lending and leasing activities, and noncontrolling investments in various other businesses.