FORT LAUDERDALE, FL -- (Marketwire) -- 09/11/08 -- SEACOR Holdings Inc. (NYSE: CKH) today announced that its Board of Directors has increased its authorization for repurchases of SEACOR's common stock and its 2.875% convertible senior debentures due 2024 by $117.7 million for a total authorized expenditure of up to $150 million for the purchase of such securities. In addition, SEACOR may purchase, separate from such authorization, any or all of its 7.2% senior notes due 2009, its 5 7/8% senior notes due 2012, and the 9 1/2% senior notes due 2013 of Seabulk International, Inc., a wholly-owned subsidiary. The repurchase of securities may be conducted from time to time through open market purchases, privately negotiated transactions or otherwise depending on market conditions.

SEACOR is a global provider of marine support and transportation service, primarily to the energy and chemical industries. SEACOR and its subsidiaries provide customers with a full suite of marine-related services including offshore services, U.S. coastwise shipping, inland river services, aviation services, environmental services, and offshore and harbor towing services. SEACOR is focused on providing highly responsive local service, combined with the highest safety standards, innovative technology, modern efficient equipment, and dedicated, professional employees.

This release includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements concerning management's expectations, strategic objectives, business prospects, anticipated economic performance and financial condition and other similar matters involve known and unknown risks, uncertainties and other important factors that could cause the actual results, performance or achievements of results to differ materially from any future results, performance or achievements discussed or implied by such forward-looking statements. Such risks, uncertainties and other important factors include, among others: the conditions in the global financial markets and international economic conditions including, interest rate fluctuations, availability of credit, inflation rates, change in laws, trade barriers, commodity prices and currency exchange fluctuations, the cyclical nature of the oil and gas industry, loss of U.S.