EXHIBIT 99.1
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[SEACOR Holdings Inc. Logo]                                        PRESS RELEASE


          SEACOR ANNOUNCES INCREASE IN SECURITIES REPURCHASE AUTHORITY


Fort Lauderdale, Florida
December 3, 2007


FOR IMMEDIATE RELEASE -- SEACOR Holdings Inc. (NYSE:CKH) announced today 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
$115.5 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, helicopter
services, environmental services, and offshore and harbor towing services.
SEACOR is uniquely 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 cyclical nature of the oil and gas industry, activity in foreign
countries and changes in foreign political, military and economic conditions,
the dependence of Offshore Marine Services, Marine Transportation Services and
Aviation Services on several customers, industry fleet capacity, consolidation
of our customer base, the ongoing need to replace aging vessels, restrictions
imposed by the Shipping Acts and Aviation Acts on the amount of foreign
ownership of the Company's Common Stock, increased competition if the Jones Act
is repealed, safety record requirements related to Offshore Marine Services and
Aviation Services, changes in foreign and domestic oil and gas exploration and
production activity, operational risks of Offshore Marine Services, Marine
Transportation Services, Harbor and Offshore Towing Services and


Aviation Services, effects of adverse weather conditions and seasonality on
Aviation Services, decreased demand for Marine Transportation Services and
Harbor and Offshore Towing Services due to construction of additional refined
petroleum product, natural gas or crude oil pipelines or due to decreased demand
for refined petroleum products, crude oil or chemical products or a change in
existing methods of delivery, future phase-out of our single-hull tankers,
dependence of spill response revenue on the number and size of spills and upon
continuing government regulation in this area and our ability to comply with
such regulation and other governmental regulation, changes in NRC's OSRO








classification, liability in connection with providing spill response services,
effects of adverse weather and river conditions and seasonality on Inland River
Services, the level of grain export volume, the effect of fuel prices on barge
towing costs, variability in freight rates for inland river barges, the effect
of international economic and political factors in Inland River Service's
operations, adequacy of insurance coverage, compliance with government
regulation, including environmental laws and regulations, currency exchange
fluctuations, the attraction and retention of qualified personnel by the Company
and various other matters, many of which are beyond the Company's control and
other factors. In addition, these statements constitute our cautionary
statements under the Private Securities Litigation Reform Act of 1995. You
should understand that it is not possible to predict or identify all such
factors. Consequently, you should not consider the following to be a complete
discussion of all potential risks or uncertainties. The words "estimate,"
"project," "intend," "believe," "plan" and similar expressions are intended to
identify forward-looking statements. Forward-looking statements speak only as of
the date of the document in which they are made. We disclaim any obligation or
undertaking to provide any updates or revisions to any forward-looking statement
to reflect any change in our expectations or any change in events, conditions or
circumstances on which the forward-looking statement is based. The
forward-looking statements in this release should be evaluated together with the
many uncertainties that affect our businesses, particularly those mentioned
under "Forward-Looking Statements" in Item 7 of our Form 10-K and SEACOR's
periodic reporting on Form 10-Q and Form 8-K (if any), which we incorporate by
reference.


For additional information, contact Timothy McKeand, Vice President, at (954)
627-6380 or visit SEACOR's website at www.seacorholdings.com.





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