SEACOR Holdings, Inc. engages in the provision of transportation and logistics solutions through its subsidiaries. It operates through the following segments: Ocean Transportation and Logistics Services; Inland Transportation and Logistics Services; Witt O'Brien's; and Other. The Ocean Transportation and Logistics Services segment owns and operates a fleet of bulk transportation, port and infrastructure, and logistics assets, including U.S. coastwise eligible vessels and vessels trading internationally. The Inland Transportation and Logistics Services segment provides customer supply chain solutions with its domestic river transportation equipment, fleeting services and high-speed multi-modal terminal locations adjacent to and along the U.S. Inland Waterways. The Witt O'Brien's segment offers crisis and emergency management services for both the public and private sectors. The Other segment consists other activities and non-controlling investments in various other businesses. The company was founded by Charles L. Fabrikant in 1989 and is headquartered in Fort Lauderdale, FL.