SEACOR Announces Increase in Securities
Repurchase Authority

FORT LAUDERDALE, FL - (Marketwire - February 22, 2010)

SEACOR Holdings Inc. (NYSE: CKH) today announced that its Board of Directors has increased its authorization for repurchases of SEACOR's common stock by $147.8 million for a total authorized expenditure of up to $250 million for the purchase of such securities. In addition, SEACOR may purchase, separate from such authorization, any or all of its 5.875% senior notes due 2012 and its 7.375% senior notes due 2019. 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 equipment and services primarily supporting the offshore oil and gas and marine transportation industries. SEACOR offers customers a diversified suite of services including offshore marine, marine transportation, inland river, aviation, environmental, commodity trading and logistics and offshore and harbor towing. SEACOR is focused on providing highly responsive local service combined with the highest safety standards, innovative technology, modern, efficient equipment and dedicated professional employees.

SEACOR Holdings